(function() {
  define('orchard/base',[],function() {
    var Base;
    return Base = (function() {
      function Base() {}

      Base.include = function(mixinClass) {
        var key, value, _ref;
        _ref = mixinClass.prototype;
        for (key in _ref) {
          value = _ref[key];
          this.prototype[key] = value;
        }
        if (mixinClass.included != null) {
          return mixinClass.included.apply(this);
        }
      };

      return Base;

    })();
  });

}).call(this);

(function() {
  var __slice = [].slice;

  define('orchard/event',[],function() {
    /*
    	Port of MicroEvent in Coffeescript with some naming modifications
    	and a new 'once' method.
    	 
    	Original project:
    	https://github.com/jeromeetienne/microevent.js
    */

    var MicroEvent;
    return MicroEvent = (function() {
      function MicroEvent() {}

      MicroEvent.prototype._init = function() {
        return this._listn || (this._listn = {});
      };

      MicroEvent.prototype._create = function(e) {
        return this._init()[e] || (this._init()[e] = []);
      };

      MicroEvent.prototype.on = function(event, callback) {
        return (this._create(event)).push(callback);
      };

      MicroEvent.prototype.off = function(event, callback) {
        var listeners;
        if (event == null) {
          return this._listn = {};
        } else if (callback == null) {
          this._init();
          return delete this._listn[event];
        } else {
          if ((listeners = this._init()[event]) != null) {
            return listeners.splice(listeners.indexOf(callback), 1);
          }
        }
      };

      MicroEvent.prototype.once = function(e, f) {
        var t,
          _this = this;
        return this.on(e, (t = function() {
          return (_this.off(e, t)) && f.apply(_this, arguments);
        }));
      };

      MicroEvent.prototype.trigger = function() {
        var args, e, l, t, _i, _len;
        e = arguments[0], args = 2 <= arguments.length ? __slice.call(arguments, 1) : [];
        if ((t = this._init()[e]) != null) {
          for (_i = 0, _len = t.length; _i < _len; _i++) {
            l = t[_i];
            l.call.apply(l, [this].concat(__slice.call(args)));
          }
        }
        return 0;
      };

      return MicroEvent;

    })();
  });

}).call(this);

(function() {
  var __slice = [].slice;

  define('orchard/debug',[],function() {
    var debug;
    return debug = function() {
      var args;
      args = 1 <= arguments.length ? __slice.call(arguments, 0) : [];
      if ((typeof window !== "undefined" && window !== null ? window.location.hostname : void 0) === "localhost") {
        return console.debug.apply(console, args);
      }
    };
  });

}).call(this);

(function() {
  define('orchard/document/text',["orchard/debug"], function(debug) {
    var DocumentText;
    return DocumentText = (function() {
      function DocumentText() {}

      DocumentText.included = function() {
        return this.shareJsUpdateHandlers.push("handleTextUpdate");
      };

      DocumentText.prototype.getValue = function() {
        var lines;
        lines = this.doc.at().get().lines.map(function(line) {
          return line.text;
        });
        return lines.join("\n");
      };

      DocumentText.prototype.getLineLength = function(lineNo) {
        return this.doc.at(["lines", lineNo, "text"]).get().length;
      };

      DocumentText.prototype.getText = function(lineNo, position, length) {
        var text;
        text = this.doc.at(["lines", lineNo, "text"]).get();
        if (position != null) {
          if (length != null) {
            return text.slice(position, position + length);
          } else {
            return text.slice(position);
          }
        } else {
          return text;
        }
      };

      DocumentText.prototype.getLine = function(lineNo) {
        if (lineNo > (this.getLineCount() - 1)) {
          debug("doc", "line does not exist");
          return "";
        }
        return this.doc.at(["lines", lineNo, "text"]).get();
      };

      DocumentText.prototype.getLines = function() {
        var line, _i, _len, _ref, _results;
        _ref = this.doc.at(["lines"]).get();
        _results = [];
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          line = _ref[_i];
          _results.push(line.text);
        }
        return _results;
      };

      DocumentText.prototype.getLineCount = function(lineNo) {
        return this.doc.at(["lines"]).get().length;
      };

      DocumentText.prototype.applyChange = function(change) {
        var applyDeletes, applyInserts, i, lastInserted, nlines, text, _i, _len, _ref, _results,
          _this = this;
        debug("doc", "applying change", change);
        applyDeletes = function() {
          var beginningOfLine, deleteStartPosition, deletedTextLength, firstLine, i, isFirstLine, isLastLine, lastLine, lineNo, nextLine, _i, _results;
          firstLine = change.from.line;
          lastLine = change.to.line;
          nextLine = firstLine + 1;
          _results = [];
          for (lineNo = _i = firstLine; firstLine <= lastLine ? _i <= lastLine : _i >= lastLine; lineNo = firstLine <= lastLine ? ++_i : --_i) {
            i = lineNo - firstLine;
            deleteStartPosition = change.from.ch;
            deletedTextLength = change.deleted[i].length;
            beginningOfLine = 0;
            isFirstLine = lineNo === firstLine;
            isLastLine = lineNo === lastLine;
            if (isFirstLine) {
              if (deletedTextLength !== 0) {
                _results.push(_this.deleteText(firstLine, deleteStartPosition, deletedTextLength));
              } else {
                _results.push(void 0);
              }
            } else if (isLastLine) {
              if (deletedTextLength !== 0) {
                _this.deleteText(nextLine, beginningOfLine, deletedTextLength);
              }
              _results.push(_this.concatLineWithNext(firstLine));
            } else {
              _results.push(_this.deleteLine(nextLine));
            }
          }
          return _results;
        };
        applyInserts = function() {
          var beginningOfLine, firstLine, firstLineEndLength, firstLineEndPosition, firstLineEndText, i, insertStartPosition, insertedText, isFirstLine, isLastLine, lastLine, nextLine, _i, _len, _ref, _results;
          firstLine = change.from.line;
          lastLine = firstLine + change.inserted.length - 1;
          _ref = change.inserted;
          _results = [];
          for (i = _i = 0, _len = _ref.length; _i < _len; i = ++_i) {
            insertedText = _ref[i];
            nextLine = firstLine + i;
            insertStartPosition = change.from.ch;
            beginningOfLine = 0;
            isFirstLine = i === 0;
            isLastLine = i === change.inserted.length - 1;
            if (isFirstLine) {
              if (insertedText.length !== 0) {
                _results.push(_this.insertText(firstLine, insertStartPosition, insertedText));
              } else {
                _results.push(void 0);
              }
            } else if (isLastLine) {
              firstLineEndPosition = change.from.ch + change.inserted[0].length;
              firstLineEndLength = _this.getLineLength(firstLine) - firstLineEndPosition;
              firstLineEndText = _this.getText(firstLine, firstLineEndPosition, firstLineEndLength);
              if (firstLineEndLength !== 0) {
                _this.deleteText(firstLine, firstLineEndPosition, firstLineEndLength);
              }
              _results.push(_this.insertLine(lastLine, insertedText + firstLineEndText));
            } else {
              _results.push(_this.insertLine(nextLine, insertedText));
            }
          }
          return _results;
        };
        lastInserted = change.inserted[change.inserted.length - 1];
        if (change.from.ch === 0 && change.to.ch === 0 && lastInserted === "") {
          nlines = change.to.line - change.from.line;
          debug("doc", "whole lines replace", change, nlines);
          if (nlines > 0) {
            this.deleteLines(change.from.line, nlines);
          }
          _ref = change.inserted.slice(0, -1);
          _results = [];
          for (i = _i = 0, _len = _ref.length; _i < _len; i = ++_i) {
            text = _ref[i];
            _results.push(this.insertLine(change.from.line + i, text));
          }
          return _results;
        } else {
          applyDeletes();
          return applyInserts();
        }
      };

      DocumentText.prototype.deleteText = function(lineNo, from, length, callback) {
        var line, removedText, text;
        if (callback == null) {
          callback = function(error) {};
        }
        if (length > 0) {
          debug("doc", "deleting text", {
            line: lineNo,
            ch: from,
            length: length
          });
          line = this.doc.at(["lines", lineNo]);
          text = line.at(["text"]);
          removedText = text.get().slice(from, from + length);
          return text.del(from, length, function(error) {
            return callback(error, removedText);
          });
        }
      };

      DocumentText.prototype.deleteLines = function(from, number) {
        var lineNo, to, _i, _ref, _results;
        debug("doc", "deleting lines", {
          from: from,
          number: number
        });
        if (number === 0) {
          return;
        }
        to = from + number;
        _results = [];
        for (lineNo = _i = _ref = to - 1; _ref <= from ? _i <= from : _i >= from; lineNo = _ref <= from ? ++_i : --_i) {
          _results.push(this.deleteLine(lineNo));
        }
        return _results;
      };

      DocumentText.prototype.deleteLine = function(lineNo, callback) {
        var line;
        if (callback == null) {
          callback = function(error) {};
        }
        debug("doc", "deleting line", {
          line: lineNo
        });
        line = this.doc.at(["lines", lineNo]);
        return line.remove(callback);
      };

      DocumentText.prototype.concatLineWithNext = function(lineNo, callback) {
        var endOfFirstLine, firstLine, firstText, secondLine, secondText;
        if (callback == null) {
          callback = function(error) {};
        }
        debug("doc", "concatting line", {
          line: lineNo
        });
        firstLine = this.doc.at(["lines", lineNo]);
        firstText = firstLine.at(["text"]);
        secondLine = this.doc.at(["lines", lineNo + 1]);
        secondText = secondLine.at(["text"]);
        endOfFirstLine = firstText.get().length;
        return firstText.insert(endOfFirstLine, secondText.get(), function(error) {
          if (error != null) {
            return callback(error);
          }
          return secondLine.remove(callback);
        });
      };

      DocumentText.prototype.insertText = function(lineNo, position, rawText, callback) {
        var line, text;
        if (callback == null) {
          callback = function(error) {};
        }
        if (rawText.length > 0) {
          debug("doc", "inserting text", {
            line: lineNo,
            text: rawText,
            ch: position
          });
          line = this.doc.at(["lines", lineNo]);
          text = line.at(["text"]);
          return text.insert(position, rawText, callback);
        }
      };

      DocumentText.prototype.insertLine = function(lineNo, text, callback) {
        var lines;
        if (callback == null) {
          callback = function(error) {};
        }
        debug("doc", "inserting line", {
          line: lineNo,
          text: text
        });
        lines = this.doc.at(["lines"]);
        return lines.insert(lineNo, {
          text: text,
          annotations: []
        }, callback);
      };

      DocumentText.prototype.handleTextUpdate = function(path, op) {
        var annotation, ch, change, deletedText, insertedText, isLineDeletion, isLineInsertion, isLineModification, isTextDeletion, isTextInsertion, isTextModification, line, _i, _j, _len, _len1, _lines, _ref, _ref1, _text;
        isTextModification = path.length === 4 && path[0] === "lines" && path[2] === "text";
        isLineModification = path.length === 2 && path[0] === "lines";
        isTextInsertion = op.si != null;
        isTextDeletion = op.sd != null;
        isLineInsertion = op.li != null;
        isLineDeletion = op.ld != null;
        if (isTextModification) {
          _lines = path[0], line = path[1], _text = path[2], ch = path[3];
          if (isTextInsertion) {
            insertedText = op.si;
            change = {
              inserted: [insertedText],
              deleted: [],
              from: {
                line: line,
                ch: ch
              },
              to: {
                line: line,
                ch: ch
              }
            };
            this.trigger("text:insert", {
              line: line,
              ch: ch,
              text: insertedText
            });
            this.trigger("change", change);
            return true;
          } else if (isTextDeletion) {
            deletedText = op.sd;
            change = {
              inserted: [],
              deleted: [deletedText],
              from: {
                line: line,
                ch: ch
              },
              to: {
                line: line,
                ch: ch + deletedText.length
              }
            };
            this.trigger("text:remove", {
              line: line,
              ch: ch,
              text: deletedText
            });
            this.trigger("change", change);
            return true;
          } else {
            throw new Error("Unknown op");
          }
        } else if (isLineModification) {
          _lines = path[0], line = path[1];
          if (isLineDeletion) {
            change = {
              inserted: [],
              deleted: [op.ld.text, ""],
              from: {
                line: line,
                ch: 0
              },
              to: {
                line: line + 1,
                ch: 0
              }
            };
            this.trigger("line:remove", {
              line: line,
              text: op.ld.text
            });
            this.trigger("change", change);
            _ref = op.ld.annotations || [];
            for (_i = 0, _len = _ref.length; _i < _len; _i++) {
              annotation = _ref[_i];
              this.trigger("annotation:remove", annotation, line);
            }
            return true;
          } else if (isLineInsertion) {
            change = {
              inserted: [op.li.text, ""],
              deleted: [],
              from: {
                line: line,
                ch: 0
              },
              to: {
                line: line,
                ch: 0
              }
            };
            this.trigger("line:insert", {
              line: line,
              text: op.li.text
            });
            this.trigger("change", change);
            _ref1 = op.li.annotations || [];
            for (_j = 0, _len1 = _ref1.length; _j < _len1; _j++) {
              annotation = _ref1[_j];
              this.trigger("annotation:new", annotation, line);
            }
            return true;
          } else {
            throw new Error("Unknown op");
          }
        } else {
          return false;
        }
      };

      return DocumentText;

    })();
  });

}).call(this);

(function() {
  define('orchard/document/raw',["orchard/debug"], function(debug) {
    var DocumentRaw;
    return DocumentRaw = (function() {
      function DocumentRaw() {}

      DocumentRaw.prototype.getRawRange = function(from, to) {
        var annotation, lastLine, lines, truncatedAnnotations, _i, _j, _len, _len1, _ref, _ref1;
        if (from.line > to.line) {
          return [];
        }
        lines = this.doc.at(["lines"]).get().slice(from.line, to.line + 1);
        if (lines.length === 0) {
          return [];
        }
        lastLine = lines[lines.length - 1];
        truncatedAnnotations = [];
        _ref = lastLine.annotations;
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          annotation = _ref[_i];
          if ((annotation.to != null) && annotation.to <= to.ch) {
            truncatedAnnotations.push(annotation);
          }
        }
        lines[lines.length - 1] = {
          text: lastLine.text.slice(0, to.ch),
          annotations: truncatedAnnotations
        };
        truncatedAnnotations = [];
        _ref1 = lines[0].annotations;
        for (_j = 0, _len1 = _ref1.length; _j < _len1; _j++) {
          annotation = _ref1[_j];
          if ((annotation.from != null) && annotation.from >= from.ch) {
            annotation.from -= from.ch;
            annotation.to -= from.ch;
            truncatedAnnotations.push(annotation);
          }
        }
        lines[0] = {
          text: lines[0].text.slice(from.ch),
          annotations: truncatedAnnotations
        };
        return lines;
      };

      DocumentRaw.prototype.insertRawRange = function(position, lines) {
        var _this = this;
        if (lines.length === 0) {
          return;
        }
        if (lines.length === 1) {
          return this.insertRawText(position, lines[0]);
        } else {
          return this.asSingleOp(function() {
            var i, line, _i, _len, _ref, _results;
            _this.splitLine(position.line, position.ch);
            _this.insertRawText({
              line: position.line,
              ch: position.ch
            }, lines[0]);
            _this.insertRawText({
              line: position.line + 1,
              ch: 0
            }, lines[lines.length - 1]);
            _ref = lines.slice(1, -1);
            _results = [];
            for (i = _i = 0, _len = _ref.length; _i < _len; i = ++_i) {
              line = _ref[i];
              _results.push(_this.insertRawLine(position.line + i + 1, line));
            }
            return _results;
          });
        }
      };

      DocumentRaw.prototype.insertRawLine = function(lineNo, line) {
        var lines;
        if (line == null) {
          line = {
            text: "",
            annotations: []
          };
        }
        lines = this.doc.at(["lines"]);
        return lines.insert(lineNo, line);
      };

      DocumentRaw.prototype.insertRawText = function(position, data) {
        var annotations, line, text;
        if (position == null) {
          position = {
            line: 0,
            ch: 0
          };
        }
        if (data == null) {
          data = {
            text: "",
            annotations: []
          };
        }
        line = this.doc.at(["lines", position.line]);
        text = line.at(["text"]);
        annotations = line.at(["annotations"]);
        return this.asSingleOp(function() {
          var annotation, i, _i, _j, _len, _len1, _ref, _ref1, _results;
          text.insert(position.ch, data.text);
          _ref = annotations.get();
          for (i = _i = 0, _len = _ref.length; _i < _len; i = ++_i) {
            annotation = _ref[i];
            if ((annotation.from != null) && (annotation.to != null) && annotation.from >= position.ch) {
              annotations.at([i, "from"]).add(data.text.length);
              annotations.at([i, "to"]).add(data.text.length);
            }
          }
          _ref1 = data.annotations;
          _results = [];
          for (_j = 0, _len1 = _ref1.length; _j < _len1; _j++) {
            annotation = _ref1[_j];
            annotation.from = annotation.from + position.ch;
            annotation.to = annotation.to + position.ch;
            _results.push(annotations.insert(annotations.get().length, annotation));
          }
          return _results;
        });
      };

      DocumentRaw.prototype.splitLine = function(lineNo, position) {
        var annotation, currentAnnotations, currentLine, i, newLine, removeAnnotationIndices, _i, _len, _ref,
          _this = this;
        currentLine = this.doc.at(["lines", lineNo]);
        newLine = {
          text: currentLine.get().text.slice(position),
          annotations: []
        };
        currentAnnotations = currentLine.at(["annotations"]);
        removeAnnotationIndices = [];
        _ref = currentAnnotations.get();
        for (i = _i = 0, _len = _ref.length; _i < _len; i = ++_i) {
          annotation = _ref[i];
          if ((annotation.from != null) && (annotation.to != null) && annotation.from >= position) {
            annotation.from -= position;
            annotation.to -= position;
            newLine.annotations.push(annotation);
            removeAnnotationIndices.push(i);
          }
        }
        return this.asSingleOp(function() {
          var _j, _len1, _ref1;
          currentLine.at(["text"]).del(position, newLine.text.length);
          _ref1 = removeAnnotationIndices.reverse();
          for (_j = 0, _len1 = _ref1.length; _j < _len1; _j++) {
            i = _ref1[_j];
            currentAnnotations.at([i]).remove();
          }
          return _this.insertRawLine(lineNo + 1, newLine);
        });
      };

      DocumentRaw.prototype.getRawSnapshot = function() {
        return this.doc.at(["lines"]).get();
      };

      return DocumentRaw;

    })();
  });

}).call(this);

(function() {
  define('orchard/document/annotations',["orchard/debug"], function(debug) {
    var DocumentAnnotations;
    return DocumentAnnotations = (function() {
      function DocumentAnnotations() {}

      DocumentAnnotations.included = function() {
        return this.shareJsUpdateHandlers.push("handleAnnotationUpdate");
      };

      DocumentAnnotations.prototype.handleAnnotationUpdate = function(path, op) {
        var annotation, annotationIndex, isAnnotationDeletion, isAnnotationInsert, isSubdoc, lineNo, _annotations, _lines;
        isAnnotationInsert = path.length === 4 && path[0] === "lines" && path[2] === "annotations" && (op.li != null);
        isAnnotationDeletion = path.length === 4 && path[0] === "lines" && path[2] === "annotations" && (op.ld != null);
        isSubdoc = path.length >= 7 && path[0] === "lines" && path[2] === "annotations" && path[4] === "data" && path[6] === "lines";
        debug("subdoc", isSubdoc);
        if (isAnnotationInsert) {
          _lines = path[0], lineNo = path[1], _annotations = path[2], annotationIndex = path[3];
          annotation = op.li;
          this.trigger("annotation:new", annotation, lineNo);
          return true;
        } else if (isAnnotationDeletion) {
          _lines = path[0], lineNo = path[1], _annotations = path[2], annotationIndex = path[3];
          annotation = op.ld;
          this.trigger("annotation:remove", annotation, lineNo);
          return true;
        } else if (isSubdoc) {
          return true;
        } else {
          return false;
        }
      };

      DocumentAnnotations.prototype.getAnnotations = function() {
        var annotation, annotations, line, lineNo, _i, _j, _len, _len1, _ref, _ref1;
        annotations = [];
        _ref = this.doc.at(["lines"]).get() || [];
        for (lineNo = _i = 0, _len = _ref.length; _i < _len; lineNo = ++_i) {
          line = _ref[lineNo];
          _ref1 = line.annotations || [];
          for (_j = 0, _len1 = _ref1.length; _j < _len1; _j++) {
            annotation = _ref1[_j];
            annotations.push([annotation, lineNo]);
          }
        }
        return annotations;
      };

      DocumentAnnotations.prototype.getAnnotationsOnLine = function(lineNo) {
        return this.doc.at(["lines", lineNo, "annotations"]).get();
      };

      DocumentAnnotations.prototype.findAnnotation = function(annotationId) {
        var annotation, annotationIndex, annotationsLength, lineNo, rawAnnotation, _i, _j, _ref, _ref1;
        for (lineNo = _i = 0, _ref = this.getLineCount() - 1; 0 <= _ref ? _i <= _ref : _i >= _ref; lineNo = 0 <= _ref ? ++_i : --_i) {
          annotationsLength = this.doc.at(["lines", lineNo, "annotations"]).get().length;
          for (annotationIndex = _j = 0, _ref1 = annotationsLength - 1; 0 <= _ref1 ? _j <= _ref1 : _j >= _ref1; annotationIndex = 0 <= _ref1 ? ++_j : --_j) {
            annotation = this.doc.at(["lines", lineNo, "annotations", annotationIndex]);
            rawAnnotation = annotation.get();
            if ((rawAnnotation != null) && rawAnnotation.id === annotationId) {
              return [annotation, lineNo];
            }
          }
        }
        return [null, null];
      };

      DocumentAnnotations.prototype._createAnnotationId = function() {
        return "xxxxxxxx".replace(/x/g, function() {
          return (Math.random() * 36 | 0).toString(36);
        });
      };

      DocumentAnnotations.prototype.recreateAnnotationIds = function(lines) {
        var annotation, line, _i, _len, _results;
        _results = [];
        for (_i = 0, _len = lines.length; _i < _len; _i++) {
          line = lines[_i];
          _results.push((function() {
            var _j, _len1, _ref, _results1;
            _ref = line.annotations;
            _results1 = [];
            for (_j = 0, _len1 = _ref.length; _j < _len1; _j++) {
              annotation = _ref[_j];
              _results1.push(annotation.id = this._createAnnotationId());
            }
            return _results1;
          }).call(this));
        }
        return _results;
      };

      return DocumentAnnotations;

    })();
  });

}).call(this);

(function() {
  define('orchard/document/line-annotations',["orchard/debug"], function(debug) {
    var DocumentLineAnnotations;
    return DocumentLineAnnotations = (function() {
      function DocumentLineAnnotations() {}

      DocumentLineAnnotations.prototype.addLineAnnotation = function(lineNo, className, annotationId) {
        var annotations;
        if (annotationId == null) {
          annotationId = this._createAnnotationId();
        }
        debug("doc", "adding line annotation new", {
          line: lineNo,
          "class": className,
          id: annotationId
        });
        annotations = this.doc.at(["lines", lineNo, "annotations"]);
        annotations.push({
          type: "line",
          "class": className,
          id: annotationId
        });
        return annotationId;
      };

      DocumentLineAnnotations.prototype.removeLineAnnotation = function(annotationId) {
        var annotation, lineNo, _ref;
        debug("doc", "removing line annotation", {
          id: annotationId
        });
        _ref = this.findAnnotation(annotationId), annotation = _ref[0], lineNo = _ref[1];
        return annotation.remove();
      };

      DocumentLineAnnotations.prototype.getLineAnnotationsOnLine = function(lineNo) {
        var annotation, annotations, _i, _len, _ref;
        debug("doc", "getting annotations on line", {
          line: lineNo
        });
        if (lineNo > (this.getLineCount() - 1)) {
          debug("doc", "line does not exist");
          return [];
        }
        annotations = [];
        _ref = this.doc.at(["lines", lineNo, "annotations"]).get() || [];
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          annotation = _ref[_i];
          if (annotation.type === "line") {
            annotations.push(annotation);
          }
        }
        return annotations;
      };

      return DocumentLineAnnotations;

    })();
  });

}).call(this);

(function() {
  var __slice = [].slice;

  define('orchard/document/widgets',["orchard/debug"], function(debug) {
    var DocumentWidgets;
    return DocumentWidgets = (function() {
      function DocumentWidgets() {}

      DocumentWidgets.included = function() {
        return this.shareJsUpdateHandlers.push("handleWidgetDataUpdate");
      };

      DocumentWidgets.prototype.handleWidgetDataUpdate = function(path, op) {
        var annotation, annotationIndex, isWidgetDataUpdate, lineNo, _annotations, _lines;
        isWidgetDataUpdate = path.length > 5 && path[0] === "lines" && path[2] === "annotations" && path[4] === "data";
        if (isWidgetDataUpdate) {
          _lines = path[0], lineNo = path[1], _annotations = path[2], annotationIndex = path[3];
          annotation = this.doc.at(["lines", lineNo, "annotations", annotationIndex]).get();
          this.trigger("annotation:update", annotation, lineNo);
          return true;
        } else {
          return false;
        }
      };

      DocumentWidgets.prototype.addWidget = function(lineNo, className, data, annotationId) {
        var annotations;
        if (annotationId == null) {
          annotationId = this._createAnnotationId();
        }
        debug("doc", "adding widget", {
          line: lineNo,
          "class": className,
          id: annotationId
        });
        annotations = this.doc.at(["lines", lineNo, "annotations"]);
        annotations.push({
          type: "widget",
          "class": className,
          id: annotationId,
          data: data
        });
        return annotationId;
      };

      DocumentWidgets.prototype.removeWidget = function(annotationId) {
        var annotation, lineNo, _ref;
        debug("doc", "removing widget", {
          id: annotationId
        });
        _ref = this.findAnnotation(annotationId), annotation = _ref[0], lineNo = _ref[1];
        if (annotation == null) {
          return;
        }
        return annotation.remove();
      };

      DocumentWidgets.prototype.getWidgetDataSubdoc = function(annotationId, path) {
        var annotation, lineNo, subdoc, _ref,
          _this = this;
        _ref = this.findAnnotation(annotationId), annotation = _ref[0], lineNo = _ref[1];
        if (annotation == null) {
          return;
        }
        subdoc = annotation.at(["data"]).at(path);
        subdoc._getCurrentPath = function() {
          return _this.getWidgetDataSubdocPath(annotationId, path);
        };
        return subdoc;
      };

      DocumentWidgets.prototype.getWidgetDataSubdocPath = function(annotationId, path) {
        var annotation, lineNo, _ref;
        _ref = this.findAnnotation(annotationId), annotation = _ref[0], lineNo = _ref[1];
        if (annotation == null) {
          return;
        }
        return annotation.path.concat(["data"].concat(__slice.call(path)));
      };

      DocumentWidgets.prototype.getWidgetLineNo = function(annotationId) {
        var annotation, lineNo, _ref;
        _ref = this.findAnnotation(annotationId), annotation = _ref[0], lineNo = _ref[1];
        return lineNo;
      };

      DocumentWidgets.prototype.setWidgetAttribute = function(annotationId, attribute, value) {
        var annotation, lineNo, _ref;
        _ref = this.findAnnotation(annotationId), annotation = _ref[0], lineNo = _ref[1];
        if (annotation == null) {
          return;
        }
        return annotation.at(["data", attribute]).set(value);
      };

      return DocumentWidgets;

    })();
  });

}).call(this);

(function() {
  define('orchard/document/inline-widgets',["orchard/debug"], function(debug) {
    var DocumentInlineWidgets;
    return DocumentInlineWidgets = (function() {
      function DocumentInlineWidgets() {}

      DocumentInlineWidgets.prototype.addInlineWidget = function(lineNo, from, to, className, data, annotationId) {
        var annotations;
        if (annotationId == null) {
          annotationId = this._createAnnotationId();
        }
        annotations = this.doc.at(["lines", lineNo, "annotations"]);
        annotations.push({
          type: "inline-widget",
          "class": className,
          id: annotationId,
          data: data,
          from: from,
          to: to
        });
        return annotationId;
      };

      DocumentInlineWidgets.prototype.moveInlineWidget = function(annotationId, from, to) {
        var annotation, fromDelta, lineNo, rawAnnotation, toDelta, _ref;
        _ref = this.findAnnotation(annotationId), annotation = _ref[0], lineNo = _ref[1];
        rawAnnotation = annotation.get();
        fromDelta = from - rawAnnotation.from;
        toDelta = to - rawAnnotation.to;
        if (fromDelta !== 0) {
          annotation.at(["from"]).add(fromDelta);
        }
        if (toDelta !== 0) {
          return annotation.at(["to"]).add(toDelta);
        }
      };

      DocumentInlineWidgets.prototype.removeInlineWidget = function(annotationId) {
        var annotation, lineNo, _ref;
        debug("doc", "removing inline widget", {
          id: annotationId
        });
        _ref = this.findAnnotation(annotationId), annotation = _ref[0], lineNo = _ref[1];
        return annotation.remove();
      };

      DocumentInlineWidgets.prototype.getInlineWidgetsOnLine = function(lineNo) {
        var annotation, widgets, _i, _len, _ref;
        debug("doc", "getting inline widgets on line", {
          line: lineNo
        });
        if (lineNo > (this.getLineCount() - 1)) {
          debug("doc", "line does not exist");
          return [];
        }
        widgets = [];
        _ref = this.doc.at(["lines", lineNo, "annotations"]).get() || [];
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          annotation = _ref[_i];
          if (annotation.type === "inline-widget") {
            widgets.push(annotation);
          }
        }
        return widgets;
      };

      DocumentInlineWidgets.prototype.getInlineWidgetPosition = function(annotationId) {
        var annotation, lineNo, _ref;
        _ref = this.findAnnotation(annotationId), annotation = _ref[0], lineNo = _ref[1];
        return annotation.get().from;
      };

      return DocumentInlineWidgets;

    })();
  });

}).call(this);

(function() {
  var __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
    __slice = [].slice;

  define('orchard/document',["orchard/base", "orchard/event", "orchard/document/text", "orchard/document/raw", "orchard/document/annotations", "orchard/document/line-annotations", "orchard/document/widgets", "orchard/document/inline-widgets", "orchard/debug"], function(Base, Event, DocumentText, DocumentRaw, DocumentAnnotations, DocumentLineAnnotations, DocumentWidgets, DocumentInlineWidgets, debug) {
    var Document;
    return Document = (function(_super) {
      __extends(Document, _super);

      Document.include(Event);

      Document.shareJsUpdateHandlers = [];

      Document.include(DocumentText);

      Document.include(DocumentRaw);

      Document.include(DocumentAnnotations);

      Document.include(DocumentLineAnnotations);

      Document.include(DocumentWidgets);

      Document.include(DocumentInlineWidgets);

      function Document(subdoc) {
        if (subdoc != null) {
          this.doc = subdoc;
        }
        this.shareJsUpdateHandlers = Document.shareJsUpdateHandlers;
      }

      Document.prototype.detach = function() {};

      Document.prototype.initialize = function(callback) {
        var init,
          _this = this;
        if (callback == null) {
          callback = function(error) {};
        }
        init = function(error, doc) {
          _this.doc = doc;
          if (error != null) {
            return callback(error);
          }
          _this._initializeDynamicPath();
          if (_this.doc.at().get() == null) {
            _this.doc.at().set({});
          }
          if ((_this.doc.at(["lines"]).get() == null) || _this.doc.at(["lines"]).get().length === 0) {
            _this.doc.at(["lines"]).set([
              {
                text: "",
                annotations: []
              }
            ]);
          }
          _this.bindToDocEvents();
          return callback();
        };
        if (this.doc == null) {
          return sharejs.open("test", "json", init);
        } else {
          return init(null, this.doc);
        }
      };

      Document.prototype.bindToDocEvents = function() {
        var submitOp,
          _this = this;
        this.doc.at().on("child op", function(path, op) {
          var i, part, _i, _len, _ref;
          if (_this.doc._getCurrentPath != null) {
            _this.doc.path = _this.doc._getCurrentPath();
          }
          if (_this.doc.path != null) {
            _ref = _this.doc.path;
            for (i = _i = 0, _len = _ref.length; _i < _len; i = ++_i) {
              part = _ref[i];
              if (part !== op.p[i]) {
                return;
              }
            }
          }
          _this.trigger("op:remote", op);
          return _this.triggerChangeEvents(path, op);
        });
        submitOp = this.doc.submitOp;
        return this.doc.submitOp = function(op) {
          var atomOp, _i, _len;
          _this.trigger("op:local", op);
          if (_this._triggerChangeEvents) {
            for (_i = 0, _len = op.length; _i < _len; _i++) {
              atomOp = op[_i];
              _this.triggerChangeEvents(atomOp.p, atomOp);
            }
          }
          return submitOp.apply(_this.doc, arguments);
        };
      };

      Document.prototype.triggeringEvents = function(operation) {
        if (operation == null) {
          operation = function() {};
        }
        this._triggerChangeEvents = true;
        operation();
        return delete this._triggerChangeEvents;
      };

      Document.prototype.triggerChangeEvents = function(path, op) {
        var handled, handler, _i, _len, _ref, _ref1;
        debug("child op", path, op);
        handled = false;
        _ref = this.shareJsUpdateHandlers;
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          handler = _ref[_i];
          handled = (_ref1 = this[handler]) != null ? _ref1.call(this, path, op) : void 0;
          if (handled) {
            break;
          }
        }
        if (!handled) {
          throw new Error("Unknown path");
        }
        return true;
      };

      Document.prototype.topLevelDoc = function() {
        var doc;
        if (this.doc.doc != null) {
          return doc = this.doc.doc;
        } else {
          return doc = this.doc;
        }
      };

      Document.prototype.applyRawOp = function(op) {
        return this.doc.submitOp(op);
      };

      Document.prototype.revertRawOp = function(op) {
        return this.applyRawOp(sharejs.types.json.invert(op));
      };

      Document.prototype.startBufferingOps = function() {
        var doc,
          _this = this;
        doc = this.topLevelDoc();
        doc._bufferedOpsStack || (doc._bufferedOpsStack = 0);
        if (doc._bufferedOpsStack === 0) {
          doc._submitOp = doc.submitOp;
          doc._bufferedOps = [];
          doc.submitOp = function(op, callback) {
            if (callback == null) {
              callback = function(error) {};
            }
            doc.snapshot = doc.type.apply(doc.snapshot, op);
            doc._bufferedOps = doc._bufferedOps.concat(op);
            return callback();
          };
        }
        return doc._bufferedOpsStack++;
      };

      Document.prototype.submitBufferedOps = function(callback) {
        var doc,
          _this = this;
        if (callback == null) {
          callback = function(error) {};
        }
        doc = this.topLevelDoc();
        doc._bufferedOpsStack--;
        if (doc._bufferedOpsStack === 0) {
          doc.submitOp = doc._submitOp;
          doc.type._apply = doc.type.apply;
          doc.type.apply = function() {
            return doc.snapshot;
          };
          if (doc._bufferedOps.length > 0) {
            doc.submitOp(doc._bufferedOps, callback);
          }
          return doc.type.apply = doc.type._apply;
        }
      };

      Document.prototype.asSingleOp = function(operation) {
        if (operation == null) {
          operation = function() {};
        }
        this.startBufferingOps();
        operation();
        return this.submitBufferedOps();
      };

      Document.prototype._initializeDynamicPath = function() {
        if ((this.doc.path != null) && (this.doc._getCurrentPath != null)) {
          this.doc._at = this.doc.at;
          return this.doc.at = function() {
            var args;
            args = 1 <= arguments.length ? __slice.call(arguments, 0) : [];
            this.path = this._getCurrentPath();
            return this._at.apply(this, args);
          };
        }
      };

      return Document;

    })(Base);
  });

}).call(this);

(function() {
  define('orchard/codemirror/line-annotations',["orchard/debug"], function(debug) {
    var CodeMirrorLineAnnotations;
    return CodeMirrorLineAnnotations = (function() {
      function CodeMirrorLineAnnotations() {}

      CodeMirrorLineAnnotations.prototype.addLineAnnotation = function(line, className, annotationId) {
        var handle;
        debug("codemirror", "add line annotation", {
          line: line,
          "class": className,
          id: annotationId
        });
        handle = this.codemirror.getLineHandle(line);
        handle.annotationIds || (handle.annotationIds = []);
        handle.classes || (handle.classes = []);
        handle.annotationIds.push(annotationId);
        handle.classes.push(className);
        return this.codemirror.addLineClass(handle, "text", "oe-" + className);
      };

      CodeMirrorLineAnnotations.prototype.updateLineAnnotation = function(annotationId, newLineNo) {
        var annotation, hasChanged, lineHandle, oldLineNo, _ref;
        _ref = this._findLineHandleWithAnnotationId(annotationId), lineHandle = _ref[0], oldLineNo = _ref[1];
        if (lineHandle == null) {
          return;
        }
        hasChanged = oldLineNo !== newLineNo;
        debug("codemirror", "updating line annotation", {
          id: annotationId,
          oldLine: oldLineNo,
          newLine: newLineNo,
          changed: hasChanged
        });
        if (!hasChanged) {
          return;
        }
        annotation = this._removeLineAnnotationFromLineHandle(lineHandle, oldLineNo, annotationId);
        return this.addLineAnnotation(newLineNo, annotation["class"], annotationId);
      };

      CodeMirrorLineAnnotations.prototype.removeLineAnnotation = function(annotationId) {
        var annotation, lineHandle, lineNo, _ref;
        debug("codemirror", "removing line annotation", annotationId);
        _ref = this._findLineHandleWithAnnotationId(annotationId), lineHandle = _ref[0], lineNo = _ref[1];
        if (lineHandle == null) {
          return;
        }
        annotation = this._removeLineAnnotationFromLineHandle(lineHandle, lineNo, annotationId);
        return annotation;
      };

      CodeMirrorLineAnnotations.prototype.getLineAnnotationsOnLine = function(line) {
        var annotationId, annotations, i, _i, _len, _ref;
        if (typeof line === "number") {
          line = this.codemirror.getLineHandle(line);
        }
        annotations = [];
        _ref = line.annotationIds || [];
        for (i = _i = 0, _len = _ref.length; _i < _len; i = ++_i) {
          annotationId = _ref[i];
          annotations.push({
            id: annotationId,
            type: "line",
            line: this.codemirror.getLineNumber(line),
            "class": line.classes[i]
          });
        }
        return annotations;
      };

      CodeMirrorLineAnnotations.prototype.getAllLineAnnotations = function() {
        var annotations, line, lineNo;
        lineNo = 0;
        annotations = [];
        while ((line = this.codemirror.getLineHandle(lineNo))) {
          annotations = annotations.concat(this.getLineAnnotationsOnLine(line));
          lineNo++;
        }
        return annotations;
      };

      CodeMirrorLineAnnotations.prototype.getLineHandle = function(lineNo) {
        return this.codemirror.getLineHandle(lineNo);
      };

      CodeMirrorLineAnnotations.prototype.getLineNumber = function(lineHandle) {
        return this.codemirror.getLineNumber(lineHandle);
      };

      CodeMirrorLineAnnotations.prototype._findLineHandleWithAnnotationId = function(annotationId) {
        var line, lineNo;
        lineNo = 0;
        while ((line = this.codemirror.getLineHandle(lineNo))) {
          if ((line.annotationIds != null) && line.annotationIds.indexOf(annotationId) > -1) {
            return [line, lineNo];
          }
          lineNo++;
        }
        return [null, null];
      };

      CodeMirrorLineAnnotations.prototype._removeLineAnnotationFromLineHandle = function(lineHandle, lineNo, annotationId) {
        var className, index;
        debug("codemirror", "removing annotation from line handle", {
          handle: lineHandle,
          line: lineNo,
          id: annotationId
        });
        if (lineHandle.annotationIds == null) {
          return;
        }
        if (lineHandle.classes == null) {
          return;
        }
        index = lineHandle.annotationIds.indexOf(annotationId);
        if (!(index > -1)) {
          return;
        }
        className = lineHandle.classes[index];
        lineHandle.annotationIds.splice(index, 1);
        lineHandle.classes.splice(index, 1);
        this.codemirror.removeLineClass(lineHandle, "text", "oe-" + className);
        return {
          type: "line",
          id: annotationId,
          "class": className,
          line: lineNo
        };
      };

      return CodeMirrorLineAnnotations;

    })();
  });

}).call(this);

(function() {
  define('orchard/codemirror/visual-markers',["orchard/debug"], function(debug) {
    var CodeMirrorVisualMarkers;
    return CodeMirrorVisualMarkers = (function() {
      function CodeMirrorVisualMarkers() {}

      CodeMirrorVisualMarkers.prototype.addVisualMarker = function(from, to, className, options) {
        if (options == null) {
          options = {};
        }
        options.className = "oe-" + className;
        options.visual = true;
        return this.codemirror.markText(from, to, options);
      };

      CodeMirrorVisualMarkers.prototype.getVisualMarkersOnLine = function(lineNo) {
        var marker, visualMarkers, _i, _len, _ref;
        visualMarkers = [];
        _ref = this.getMarkersOnLine(lineNo);
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          marker = _ref[_i];
          if (marker.visual) {
            visualMarkers.push(marker);
          }
        }
        return visualMarkers;
      };

      return CodeMirrorVisualMarkers;

    })();
  });

}).call(this);

(function() {
  define('orchard/codemirror/widgets',["orchard/debug"], function(debug) {
    var CodeMirrorWidgets;
    return CodeMirrorWidgets = (function() {
      function CodeMirrorWidgets() {}

      CodeMirrorWidgets.prototype.addWidget = function(lineNo, element, annotationId) {
        var lineHandle, onChange, widget,
          _this = this;
        widget = this.codemirror.addLineWidget(lineNo, element);
        widget.annotationId = annotationId;
        this.codemirror.addLineClass(lineNo, "text", "oe-widget-line");
        lineHandle = widget.line;
        onChange = function() {
          if (lineHandle.parent == null) {
            debug("codemirror", "widget removed", widget);
            _this.trigger("annotation:remove", {
              type: "widget",
              id: widget.annotationId
            });
            return _this.codemirror.off("change", onChange);
          }
        };
        return this.codemirror.on("change", onChange);
      };

      CodeMirrorWidgets.prototype.removeWidget = function(annotationId) {
        var lineNo, widget, _ref;
        debug("codemirror", "removing widget", annotationId);
        _ref = this._findLineWidgetWithAnnotationId(annotationId), widget = _ref[0], lineNo = _ref[1];
        if (widget == null) {
          return;
        }
        widget.clear();
        this.codemirror.removeLineClass(widget.line, "text", "oe-widget-line");
        return this.trigger("annotation:remove", {
          type: "widget",
          id: annotationId
        });
      };

      CodeMirrorWidgets.prototype.markWidgetElementAsChanged = function(annotationId) {
        var lineNo, widget, _ref;
        debug("codemirror", "marking widget element as changed", annotationId);
        _ref = this._findLineWidgetWithAnnotationId(annotationId), widget = _ref[0], lineNo = _ref[1];
        debug("codemirror", widget);
        if (widget == null) {
          return;
        }
        return widget.changed();
      };

      CodeMirrorWidgets.prototype._findLineWidgetWithAnnotationId = function(annotationId) {
        var line, lineNo, widget, _i, _len, _ref;
        debug("codemirror", "WARNING FULL DOCUMENT SCAN OF LINE WIDGETS");
        lineNo = 0;
        while ((line = this.codemirror.getLineHandle(lineNo))) {
          _ref = line.widgets || [];
          for (_i = 0, _len = _ref.length; _i < _len; _i++) {
            widget = _ref[_i];
            if (widget.annotationId === annotationId) {
              return [widget, lineNo];
            }
          }
          lineNo++;
        }
        return [null, null];
      };

      return CodeMirrorWidgets;

    })();
  });

}).call(this);

(function() {
  define('orchard/codemirror/inline-widgets',["orchard/debug"], function(debug) {
    var CodeMirrorInlineWidgets;
    return CodeMirrorInlineWidgets = (function() {
      function CodeMirrorInlineWidgets() {}

      CodeMirrorInlineWidgets.prototype.addInlineWidget = function(lineNo, from, to, element, annotationId) {
        var options;
        options = {
          inlineWidget: true,
          replacedWith: element,
          annotationId: annotationId
        };
        debug("codemirror", "adding inline widget", options, lineNo, from, to);
        return this.codemirror.markText({
          line: lineNo,
          ch: from
        }, {
          line: lineNo,
          ch: to
        }, options);
      };

      CodeMirrorInlineWidgets.prototype.removeInlineWidget = function(annotationId) {
        var widget;
        widget = this._findInlineWidgetWithAnnotationId(annotationId);
        return widget != null ? widget.clear() : void 0;
      };

      CodeMirrorInlineWidgets.prototype.getInlineWidgetsOnLine = function(line) {
        var markedSpan, marker, pos, widgets, _i, _len, _ref, _ref1;
        if (typeof line === "number") {
          line = this.codemirror.getLineHandle(line);
        }
        widgets = [];
        _ref = line.markedSpans || [];
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          markedSpan = _ref[_i];
          if ((markedSpan.marker != null) && (((_ref1 = markedSpan.marker) != null ? _ref1.inlineWidget : void 0) != null)) {
            marker = markedSpan.marker;
            pos = marker.find();
            widgets.push({
              id: marker.annotationId,
              type: "inline-widget",
              line: this.codemirror.getLineNumber(line),
              from: pos != null ? pos.from : void 0,
              to: pos != null ? pos.to : void 0
            });
          }
        }
        return widgets;
      };

      CodeMirrorInlineWidgets.prototype.markInlineWidgetElementAsChanged = function(annotationId) {
        var widget;
        debug("codemirror", "marking inline widget element as changed", annotationId);
        widget = this._findInlineWidgetWithAnnotationId(annotationId);
        debug("codemirror", widget);
        if (widget == null) {
          return;
        }
        return widget.changed();
      };

      CodeMirrorInlineWidgets.prototype._findInlineWidgetWithAnnotationId = function(annotationId) {
        var marker, _i, _len, _ref;
        debug("codemirror", "WARNING FULL DOCUMENT SCAN OF INLINE WIDGETS");
        _ref = this.codemirror.getAllMarks();
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          marker = _ref[_i];
          if (marker.annotationId === annotationId) {
            return marker;
          }
        }
        return null;
      };

      return CodeMirrorInlineWidgets;

    })();
  });

}).call(this);

(function() {
  var __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };

  define('orchard/codemirror',["orchard/base", "orchard/event", "orchard/codemirror/line-annotations", "orchard/codemirror/visual-markers", "orchard/codemirror/widgets", "orchard/codemirror/inline-widgets", "orchard/debug"], function(Base, Event, CodeMirrorLineAnnotations, CodeMirrorVisualMarkers, CodeMirrorWidgets, CodeMirrorInlineWidgets, debug) {
    var CodeMirrorInterface;
    return CodeMirrorInterface = (function(_super) {
      __extends(CodeMirrorInterface, _super);

      CodeMirrorInterface.include(Event);

      CodeMirrorInterface.include(CodeMirrorLineAnnotations);

      CodeMirrorInterface.include(CodeMirrorVisualMarkers);

      CodeMirrorInterface.include(CodeMirrorWidgets);

      CodeMirrorInterface.include(CodeMirrorInlineWidgets);

      function CodeMirrorInterface(element, options) {
        var placeholder, _base;
        this.options = options != null ? options : {};
        (_base = this.options).readonly || (_base.readonly = false);
        placeholder = $(element).data("placeholder");
        this.codemirror = CodeMirror(element, {
          lineNumbers: false,
          lineWrapping: true,
          mode: "latex",
          readOnly: this.options.readonly,
          placeholder: placeholder
        });
        this.bindToEvents();
      }

      CodeMirrorInterface.prototype.detach = function() {};

      CodeMirrorInterface.prototype.setValue = function(value) {
        return this.codemirror.setValue(value);
      };

      CodeMirrorInterface.prototype.bindToEvents = function() {
        var _this = this;
        this.codemirror.on("change", function(cm, change) {
          return _this.onCodeMirrorChange(change);
        });
        this.codemirror.on("beforeSelectionChange", function(cm, selection) {
          return _this.onBeforeSelectionChange(selection);
        });
        this.codemirror.on("hitSide", function(cm, direction) {
          return _this.onHitSide(direction);
        });
        this.codemirror.on("focus", function() {
          return _this.trigger("focus");
        });
        this.codemirror.on("blur", function() {
          return _this.trigger("blur");
        });
        this.codemirror.on("keydown", function() {
          return _this.trigger("keydown");
        });
        this.codemirror.on("keyup", function() {
          return _this.trigger("keyup");
        });
        this.codemirror.on("copy", function() {
          return _this.trigger("copy");
        });
        this.codemirror.on("paste", function(e) {
          return _this.trigger("paste", e);
        });
        this.codemirror.undo = function() {
          return setTimeout(function() {
            return _this.trigger("undo");
          }, 0);
        };
        return this.codemirror.redo = function() {
          return setTimeout(function() {
            return _this.trigger("redo");
          }, 0);
        };
      };

      CodeMirrorInterface.prototype.onCodeMirrorChange = function(cmChange) {
        if (!(cmChange.origin === "setValue")) {
          this.trigger("change", {
            inserted: cmChange.text,
            deleted: cmChange.removed,
            from: {
              line: cmChange.from.line,
              ch: cmChange.from.ch
            },
            to: {
              line: cmChange.to.line,
              ch: cmChange.to.ch
            }
          });
        }
        if (cmChange.next != null) {
          return this.onCodeMirrorChange(cmChange.next);
        }
      };

      CodeMirrorInterface.prototype.onBeforeSelectionChange = function(selection) {
        this.selection = this._formatSelection(selection);
        return this.trigger("selection:change", this.selection);
      };

      CodeMirrorInterface.prototype.onHitSide = function(direction) {
        return this.trigger("selection:hitSide", direction);
      };

      CodeMirrorInterface.prototype.getSelection = function() {
        return this.selection;
      };

      CodeMirrorInterface.prototype.getSelectedText = function() {
        return this.codemirror.getSelection();
      };

      CodeMirrorInterface.prototype.replaceSelection = function(text, collapse) {
        return this.codemirror.replaceSelection(text, collapse);
      };

      CodeMirrorInterface.prototype.setCursor = function(position) {
        return this.codemirror.setCursor(position);
      };

      CodeMirrorInterface.prototype.focus = function() {
        return this.codemirror.focus();
      };

      CodeMirrorInterface.prototype.getMarkersOnLine = function(line) {
        var handle, markedSpan, markedSpans, markers, _i, _len;
        markers = [];
        handle = this.codemirror.getLineHandle(line);
        if (handle != null) {
          markedSpans = handle.markedSpans || [];
        } else {
          markedSpans = [];
        }
        for (_i = 0, _len = markedSpans.length; _i < _len; _i++) {
          markedSpan = markedSpans[_i];
          markers.push(markedSpan.marker);
        }
        return markers;
      };

      CodeMirrorInterface.prototype.getStylesOnLine = function(line) {
        var from, name, styleInfo, styles, to;
        styleInfo = this.codemirror.getLineStyles(line);
        from = styleInfo.shift() - 1;
        styles = [];
        while (styleInfo.length > 0) {
          to = styleInfo.shift();
          name = styleInfo.shift();
          styles.push({
            "class": name,
            to: to,
            from: from
          });
          from = to;
        }
        return styles;
      };

      CodeMirrorInterface.prototype.getRange = function(from, to) {
        return this.codemirror.getRange(from, to);
      };

      CodeMirrorInterface.prototype.replaceRange = function(string, from, to) {
        return this.codemirror.replaceRange(string, from, to);
      };

      CodeMirrorInterface.prototype._formatSelection = function(selection) {
        var from, to, wrongOrder, _ref;
        from = {
          line: selection.head.line,
          ch: selection.head.ch
        };
        to = {
          line: selection.anchor.line,
          ch: selection.anchor.ch
        };
        wrongOrder = false;
        if (to.line < from.line) {
          wrongOrder = true;
        } else if (to.line === from.line && to.ch < from.ch) {
          wrongOrder = true;
        }
        if (wrongOrder) {
          _ref = [from, to], to = _ref[0], from = _ref[1];
        }
        return {
          from: from,
          to: to
        };
      };

      CodeMirrorInterface.prototype.insertText = function(line, ch, text) {
        var pos;
        debug("INSERTING TEXT", line, ch, text);
        pos = {
          line: line,
          ch: ch
        };
        return this.codemirror.replaceRange(text, pos, pos);
      };

      CodeMirrorInterface.prototype.deleteText = function(line, ch, length) {
        debug("DELETING TEXT", line, ch, length);
        return this.codemirror.replaceRange("", {
          line: line,
          ch: ch
        }, {
          line: line,
          ch: ch + length
        });
      };

      CodeMirrorInterface.prototype.deleteLine = function(lineNo, text) {
        var isLastLine;
        debug("DELETING LINE", lineNo, text);
        isLastLine = lineNo === this.codemirror.lineCount() - 1;
        if (isLastLine) {
          return this.codemirror.replaceRange("", {
            line: lineNo - 1,
            ch: this.codemirror.getLine(lineNo - 1).length
          }, {
            line: lineNo,
            ch: text.length
          });
        } else {
          return this.codemirror.replaceRange("", {
            line: lineNo,
            ch: 0
          }, {
            line: lineNo + 1,
            ch: 0
          });
        }
      };

      CodeMirrorInterface.prototype.insertLine = function(lineNo, text) {
        var isLastLine;
        debug("INSERTING LINE", lineNo, text);
        isLastLine = lineNo === this.codemirror.lineCount();
        if (isLastLine) {
          return this.codemirror.replaceRange("\n" + text, {
            line: lineNo - 1,
            ch: this.codemirror.getLine(lineNo - 1).length
          }, {
            line: lineNo,
            ch: 0
          });
        } else {
          return this.codemirror.replaceRange(text + "\n", {
            line: lineNo,
            ch: 0
          }, {
            line: lineNo,
            ch: 0
          });
        }
      };

      CodeMirrorInterface.prototype.refresh = function() {
        return this.codemirror.refresh();
      };

      CodeMirrorInterface.prototype.addBookmark = function(position, element) {
        return this.codemirror.setBookmark(position, element);
      };

      return CodeMirrorInterface;

    })(Base);
  });

}).call(this);

(function() {
  var __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };

  define('orchard/latex-visualisation',["orchard/debug"], function(debug) {
    var LatexVisualisation, Marker, MathMarker;
    Marker = (function() {
      function Marker() {}

      Marker.prototype.getPosition = function() {
        var _ref;
        return (_ref = this.marker) != null ? _ref.find() : void 0;
      };

      Marker.prototype.clear = function() {
        if (this.marker != null) {
          this.marker.clear();
          return delete this.marker;
        }
      };

      return Marker;

    })();
    MathMarker = (function(_super) {
      __extends(MathMarker, _super);

      function MathMarker(editor, from, to, value) {
        this.editor = editor;
        this.value = value;
        this._createRenderedMarker(from, to, value);
      }

      MathMarker.prototype.setValue = function(value) {
        var oldValue;
        oldValue = this.value;
        this.value = value;
        if (oldValue !== this.value) {
          return this.renderIfNotSelected({
            forceRender: true
          });
        }
      };

      MathMarker.prototype.onCursorEnter = function() {
        var pos;
        debug("inline math", "cursor entered", this);
        pos = this.getPosition();
        if (pos == null) {
          throw new Error("Unknown position");
        }
        return this._createSourceMarker(pos.from, pos.to, this.value);
      };

      MathMarker.prototype.renderIfNotSelected = function(options) {
        var pos;
        if (options == null) {
          options = {
            forceRender: false
          };
        }
        if ((this.display !== "rendered" || options.forceRender) && !this._isSelected()) {
          pos = this.getPosition();
          return this._createRenderedMarker(pos.from, pos.to, this.value);
        }
      };

      MathMarker.prototype._isSelected = function() {
        var isBeforeOrEqual, pos, selection;
        selection = this.editor.getSelection();
        pos = this.getPosition();
        isBeforeOrEqual = function(from, to) {
          if (from.line < to.line) {
            return true;
          } else if (from.line === to.line && from.ch <= to.ch) {
            return true;
          } else {
            return false;
          }
        };
        if (isBeforeOrEqual(pos.from, selection.from) && isBeforeOrEqual(selection.to, pos.to)) {
          return true;
        } else {
          return false;
        }
      };

      MathMarker.prototype._createRenderedMarker = function(from, to, value) {
        var mathJaxEl,
          _this = this;
        this.clear();
        this.display = "rendered";
        mathJaxEl = document.createElement("span");
        $(mathJaxEl).text(value);
        $(mathJaxEl).click(function() {
          return _this.onCursorEnter();
        });
        this.marker = this.editor.addVisualMarker(from, to, "math", {
          replacedWith: mathJaxEl,
          handler: this
        });
        this.marker.on("beforeCursorEnter", function() {
          return _this.onCursorEnter();
        });
        MathJax.Hub.Queue([
          "Typeset", MathJax.Hub, mathJaxEl, function() {
            return _this.marker.changed();
          }
        ]);
        return this.marker;
      };

      MathMarker.prototype._createSourceMarker = function(from, to, value) {
        this.clear();
        this.display = "source";
        this.marker = this.editor.addVisualMarker(from, to, "math", {
          handler: this
        });
        return this.marker;
      };

      return MathMarker;

    })(Marker);
    return LatexVisualisation = (function() {
      function LatexVisualisation(editor) {
        var line, _i, _ref,
          _this = this;
        this.editor = editor;
        for (line = _i = 0, _ref = this.editor.getLineCount() - 1; 0 <= _ref ? _i <= _ref : _i >= _ref; line = 0 <= _ref ? ++_i : --_i) {
          this.processLine(line);
        }
        this.editor.on("change", function(change) {
          return _this.onChange(change);
        });
        this.editor.on("selection:change", function(selection) {
          return _this.onSelectionChange(selection);
        });
      }

      LatexVisualisation.prototype.onChange = function(change) {
        var line, _i, _ref, _ref1, _results;
        _results = [];
        for (line = _i = _ref = change.from.line, _ref1 = change.to.line; _ref <= _ref1 ? _i <= _ref1 : _i >= _ref1; line = _ref <= _ref1 ? ++_i : --_i) {
          _results.push(this.processLine(line));
        }
        return _results;
      };

      LatexVisualisation.prototype.onSelectionChange = function(selection) {
        if (this._oldSelection != null) {
          this._renderUnselectedMarkers(this._oldSelection);
        }
        this._renderUnselectedMarkers(selection);
        return this._oldSelection = selection;
      };

      LatexVisualisation.prototype._renderUnselectedMarkers = function(selection) {
        var line, marker, _i, _ref, _ref1, _results;
        _results = [];
        for (line = _i = _ref = selection.from.line, _ref1 = selection.to.line; _ref <= _ref1 ? _i <= _ref1 : _i >= _ref1; line = _ref <= _ref1 ? ++_i : --_i) {
          _results.push((function() {
            var _j, _len, _ref2, _results1;
            _ref2 = this._getMarkersOnLine(line);
            _results1 = [];
            for (_j = 0, _len = _ref2.length; _j < _len; _j++) {
              marker = _ref2[_j];
              if (marker.renderIfNotSelected != null) {
                _results1.push(marker.renderIfNotSelected());
              } else {
                _results1.push(void 0);
              }
            }
            return _results1;
          }).call(this));
        }
        return _results;
      };

      LatexVisualisation.prototype.processLine = function(lineNo) {
        var lineText, m, markers, remainingMarker, style, styles, update, updates, _fn, _i, _j, _k, _len, _len1, _len2, _results,
          _this = this;
        if (this.editor.codemirror == null) {
          return;
        }
        lineText = this.editor.getLineText(lineNo);
        if ((m = lineText.match(/(^\$|[^\\]\$)/g))) {
          if (m.length % 2 !== 0) {
            return;
          }
        }
        styles = this.editor.codemirror.getStylesOnLine(lineNo);
        markers = this._getMarkersOnLine(lineNo);
        updates = [];
        _fn = function(style) {
          var hasMarker, i, marker, pos, value, _j, _len1;
          if (style["class"] !== "math") {
            return;
          }
          value = _this.editor.getRange({
            line: lineNo,
            ch: style.from
          }, {
            line: lineNo,
            ch: style.to
          });
          hasMarker = false;
          for (i = _j = 0, _len1 = markers.length; _j < _len1; i = ++_j) {
            marker = markers[i];
            pos = marker.getPosition();
            if ((pos != null) && pos.from.ch === style.from && pos.to.ch === style.to) {
              markers.splice(i, 1);
              hasMarker = true;
              updates.push(function() {
                if (marker.setValue != null) {
                  marker.setValue(value);
                }
                if (marker.renderIfNotSelected != null) {
                  return marker.renderIfNotSelected();
                }
              });
              break;
            }
          }
          if (!hasMarker) {
            return updates.push(function() {
              return new MathMarker(_this.editor, {
                line: lineNo,
                ch: style.from
              }, {
                line: lineNo,
                ch: style.to
              }, value);
            });
          }
        };
        for (_i = 0, _len = styles.length; _i < _len; _i++) {
          style = styles[_i];
          _fn(style);
        }
        for (_j = 0, _len1 = markers.length; _j < _len1; _j++) {
          remainingMarker = markers[_j];
          remainingMarker.clear();
        }
        _results = [];
        for (_k = 0, _len2 = updates.length; _k < _len2; _k++) {
          update = updates[_k];
          _results.push(update());
        }
        return _results;
      };

      LatexVisualisation.prototype._getMarkersOnLine = function(line) {
        var marker, markers, _i, _len, _ref;
        markers = [];
        _ref = this.editor.getVisualMarkersOnLine(line);
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          marker = _ref[_i];
          if ((marker.handler != null) && (marker.handler instanceof MathMarker)) {
            markers.push(marker.handler);
          }
        }
        return markers;
      };

      return LatexVisualisation;

    })();
  });

}).call(this);

(function() {
  var __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
    __slice = [].slice;

  define('orchard/orchard/widgets',["orchard/base", "orchard/debug"], function(Base, debug) {
    var OrchardEditorWidgets;
    return OrchardEditorWidgets = (function(_super) {
      __extends(OrchardEditorWidgets, _super);

      OrchardEditorWidgets.WIDGET_TYPES = {};

      function OrchardEditorWidgets(editor) {
        var _this = this;
        this.editor = editor;
        this.editor.on("selection:change", function(newSelection, oldSelection) {
          return _this.onSelectionChange(newSelection, oldSelection);
        });
        this.editor.on("codemirror:annotation:remove", function(annotation) {
          return _this.onRemoveCodeMirrorAnnotation(annotation);
        });
        this.editor.on("document:annotation:new", function(annotation, lineNo) {
          return _this.onNewDocumentAnnotation(annotation, lineNo);
        });
        this.editor.on("document:annotation:sync", function(annotation, lineNo) {
          return _this.onSyncDocumentAnnotation(annotation, lineNo);
        });
        this.editor.on("document:annotation:remove", function(annotation, lineNo) {
          return _this.onRemoveDocumentAnnotation(annotation, lineNo);
        });
        this.editor.on("document:annotation:update", function(annotation, lineNo) {
          return _this.onUpdateDocumentAnnotation(annotation, lineNo);
        });
        this.editor.addWidget = function() {
          var args;
          args = 1 <= arguments.length ? __slice.call(arguments, 0) : [];
          return _this.addWidget.apply(_this, args);
        };
      }

      OrchardEditorWidgets.prototype.onSelectionChange = function(newSelection, oldSelection) {
        var enteredWidget;
        enteredWidget = false;
        if (oldSelection != null) {
          enteredWidget = this._checkIfEnteringWidget(newSelection, oldSelection);
        }
        if (!enteredWidget) {
          return this.deselectWidgets();
        }
      };

      OrchardEditorWidgets.prototype.onRemoveCodeMirrorAnnotation = function(annotation) {
        if (annotation.type === "widget") {
          this.editor.document.removeWidget(annotation.id);
          return this.clearWidget(annotation.id);
        }
      };

      OrchardEditorWidgets.prototype.onNewDocumentAnnotation = function(annotation, lineNo) {
        if (annotation.type === "widget") {
          return this._initializeWidget(annotation.id, lineNo, annotation["class"], annotation.data);
        }
      };

      OrchardEditorWidgets.prototype.onSyncDocumentAnnotation = function(annotation, lineNo) {
        return this.onNewDocumentAnnotation(annotation, lineNo);
      };

      OrchardEditorWidgets.prototype.onRemoveDocumentAnnotation = function(annotation) {
        var _ref;
        if (annotation.type === "widget") {
          return (_ref = this.editor.codemirror) != null ? _ref.removeWidget(annotation.id) : void 0;
        }
      };

      OrchardEditorWidgets.prototype.onUpdateDocumentAnnotation = function(annotation) {
        var widget;
        if (annotation.type === "widget") {
          widget = this.getWidget(annotation.id);
          if (widget == null) {
            return;
          }
          return widget.setAttributes(annotation.data);
        }
      };

      OrchardEditorWidgets.prototype.addWidget = function(lineNo, className, data) {
        var annotationId;
        if (this.editor.options.readonly) {
          return;
        }
        annotationId = this.editor.document.addWidget(lineNo, className, data);
        return this._initializeWidget(annotationId, lineNo, className, data);
      };

      OrchardEditorWidgets.prototype._initializeWidget = function(annotationId, lineNo, className, data) {
        var widget, widgetClass, _ref,
          _this = this;
        debug("editor", "initializing widget", {
          id: annotationId,
          "class": className,
          data: data
        });
        widgetClass = OrchardEditorWidgets.WIDGET_TYPES[className];
        if (widgetClass == null) {
          return;
        }
        widget = new widgetClass(this.editor, annotationId, data);
        widget.on("cursorLeave", function(direction) {
          var enteredWidget, ingoingDirection, offset, _i, _len, _ref;
          if (direction === "top") {
            offset = -1;
            ingoingDirection = "bottom";
          } else {
            offset = 1;
            ingoingDirection = "top";
          }
          lineNo = _this.getWidgetLineNo(annotationId) + offset;
          enteredWidget = false;
          _ref = _this.getWidgetsOnLine(lineNo);
          for (_i = 0, _len = _ref.length; _i < _len; _i++) {
            widget = _ref[_i];
            widget.trigger("cursorEnter", ingoingDirection);
            enteredWidget = true;
          }
          if (!enteredWidget) {
            _this.editor.focus();
            return _this.editor.setCursor({
              line: lineNo,
              ch: 0
            });
          }
        });
        this._handlers || (this._handlers = {});
        this._handlers[annotationId] = widget;
        if ((_ref = this.editor.codemirror) != null) {
          _ref.addWidget(lineNo, widget.el, annotationId);
        }
        widget.trigger("dom:insert");
        this.editor.trigger("widget:new", widget);
        this.editor.refreshDocumentNumbering();
        return widget;
      };

      OrchardEditorWidgets.prototype.clearWidget = function(annotationId) {
        var widget;
        widget = this._handlers[annotationId];
        if (widget == null) {
          return;
        }
        delete this._handlers[annotationId];
        return widget.destroy();
      };

      OrchardEditorWidgets.prototype.markWidgetElementAsChanged = function(annotationId) {
        var _ref;
        return (_ref = this.editor.codemirror) != null ? _ref.markWidgetElementAsChanged(annotationId) : void 0;
      };

      OrchardEditorWidgets.prototype.getWidgetDataSubdoc = function(annotationId, path) {
        return this.editor.document.getWidgetDataSubdoc(annotationId, path);
      };

      OrchardEditorWidgets.prototype.getWidgetLineNo = function(annotationId) {
        return this.editor.document.getWidgetLineNo(annotationId);
      };

      OrchardEditorWidgets.prototype.getWidgetsOnLine = function(lineNo) {
        var annotation, annotations, widget, widgets, _i, _len, _ref, _ref1, _ref2;
        widgets = [];
        _ref = annotations = this.editor.document.getAnnotationsOnLine(lineNo);
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          annotation = _ref[_i];
          debug("widget", annotation, (_ref1 = this._handlers) != null ? _ref1[annotation.id] : void 0);
          if (widget = (_ref2 = this._handlers) != null ? _ref2[annotation.id] : void 0) {
            widgets.push(widget);
          }
        }
        return widgets;
      };

      OrchardEditorWidgets.prototype.getWidget = function(annotationId) {
        return this._handlers[annotationId];
      };

      OrchardEditorWidgets.prototype.getWidgets = function() {
        var annotationId, handler;
        return (function() {
          var _ref, _results;
          _ref = this._handlers;
          _results = [];
          for (annotationId in _ref) {
            handler = _ref[annotationId];
            _results.push(handler);
          }
          return _results;
        }).call(this);
      };

      OrchardEditorWidgets.prototype.getWidgetsOrderedByLine = function() {
        var annotationId, handler, handlers;
        handlers = (function() {
          var _ref, _results;
          _ref = this._handlers;
          _results = [];
          for (annotationId in _ref) {
            handler = _ref[annotationId];
            _results.push(handler);
          }
          return _results;
        }).call(this);
        return handlers.sort(function(a, b) {
          a = a.getLineNumber();
          b = b.getLineNumber();
          if (a > b) {
            return 1;
          } else if (a < b) {
            return -1;
          } else {
            return 0;
          }
        });
      };

      OrchardEditorWidgets.prototype._checkIfEnteringWidget = function(newSelection, oldSelection) {
        var direction, enteredFirstLine, enteredWidget, haveSkippedLineAbove, haveSkippedLineBelow, nextLine, prevLine, widget, widgets, _i, _len;
        if (!this.editor.keydown) {
          return;
        }
        haveSkippedLineBelow = newSelection.from.line - oldSelection.to.line > 1;
        haveSkippedLineAbove = oldSelection.from.line - newSelection.to.line > 1;
        enteredFirstLine = newSelection.from.line === 0;
        if (haveSkippedLineBelow) {
          nextLine = oldSelection.to.line + 1;
          widgets = this.getWidgetsOnLine(nextLine);
          direction = "top";
        } else if (haveSkippedLineAbove) {
          prevLine = oldSelection.from.line - 1;
          widgets = this.getWidgetsOnLine(prevLine);
          direction = "bottom";
        } else if (enteredFirstLine) {
          widgets = this.getWidgetsOnLine(0);
          direction = "bottom";
        } else {
          widgets = [];
        }
        enteredWidget = false;
        for (_i = 0, _len = widgets.length; _i < _len; _i++) {
          widget = widgets[_i];
          widget.trigger("cursorEnter", direction);
          enteredWidget = true;
        }
        return enteredWidget;
      };

      OrchardEditorWidgets.prototype.deselectWidgets = function() {
        var annotationId, widget, _ref, _results;
        _ref = this._handlers;
        _results = [];
        for (annotationId in _ref) {
          widget = _ref[annotationId];
          _results.push(widget.deselect());
        }
        return _results;
      };

      return OrchardEditorWidgets;

    })(Base);
  });

}).call(this);

(function() {
  var __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
    __slice = [].slice;

  define('orchard/orchard/line-annotations',["orchard/base", "orchard/event", "orchard/debug"], function(Base, Events, debug) {
    var ChapterLineAnnotation, HeaderLineAnnotation, LineAnnotation, OrchardEditorLineAnnotations, SectionLineAnnotation, SubsectionLineAnnotation, _ref, _ref1, _ref2;
    LineAnnotation = (function(_super) {
      __extends(LineAnnotation, _super);

      LineAnnotation.include(Events);

      function LineAnnotation(editor, annotationId, lineHandle) {
        this.editor = editor;
        this.annotationId = annotationId;
        this.lineHandle = lineHandle;
      }

      LineAnnotation.prototype.destroy = function() {};

      LineAnnotation.prototype.getLineNumber = function() {
        var _ref;
        return (_ref = this.editor.codemirror) != null ? _ref.getLineNumber(this.lineHandle) : void 0;
      };

      return LineAnnotation;

    })(Base);
    HeaderLineAnnotation = (function(_super) {
      __extends(HeaderLineAnnotation, _super);

      function HeaderLineAnnotation(editor, annotationId, lineHandle) {
        var _ref,
          _this = this;
        this.editor = editor;
        this.annotationId = annotationId;
        this.lineHandle = lineHandle;
        HeaderLineAnnotation.__super__.constructor.call(this, this.editor, this.annotationId, this.lineHandle);
        if (typeof document !== "undefined" && document !== null) {
          this.numberEl = document.createElement("span");
          this.numberEl.innerText = "?. ";
          this.numberEl.className = "oe-non-editable";
          this.numberEl.onclick = function() {
            return _this.onNumberClick();
          };
        }
        this.bookmark = (_ref = this.editor.codemirror) != null ? _ref.addBookmark({
          line: this.getLineNumber(),
          ch: 0
        }, this.numberEl) : void 0;
        this.on("codemirror:sync", function() {
          return _this.refresh();
        });
      }

      HeaderLineAnnotation.prototype.refresh = function() {
        var _ref, _ref1;
        if ((_ref = this.bookmark) != null) {
          _ref.clear();
        }
        return this.bookmark = (_ref1 = this.editor.codemirror) != null ? _ref1.addBookmark({
          line: this.getLineNumber(),
          ch: 0
        }, this.numberEl) : void 0;
      };

      HeaderLineAnnotation.prototype.onNumberClick = function() {
        this.editor.setCursor({
          line: this.getLineNumber(),
          ch: 0
        });
        return this.editor.focus();
      };

      HeaderLineAnnotation.prototype.destroy = function() {
        var _ref, _ref1;
        HeaderLineAnnotation.__super__.destroy.apply(this, arguments);
        if ((_ref = this.bookmark) != null) {
          _ref.clear();
        }
        return (_ref1 = this.numberEl) != null ? _ref1.remove() : void 0;
      };

      HeaderLineAnnotation.prototype.convertToTex = function(text) {
        return "\\" + this["class"] + "{" + text + "}";
      };

      HeaderLineAnnotation.prototype.updateDocumentNumbering = function(currentNumbering) {
        this.currentNumbering = currentNumbering;
      };

      return HeaderLineAnnotation;

    })(LineAnnotation);
    ChapterLineAnnotation = (function(_super) {
      __extends(ChapterLineAnnotation, _super);

      function ChapterLineAnnotation() {
        _ref = ChapterLineAnnotation.__super__.constructor.apply(this, arguments);
        return _ref;
      }

      ChapterLineAnnotation.prototype["class"] = "chapter";

      ChapterLineAnnotation.prototype.updateDocumentNumbering = function(currentNumbering) {
        ChapterLineAnnotation.__super__.updateDocumentNumbering.apply(this, arguments);
        currentNumbering.chapter++;
        currentNumbering.section = 0;
        currentNumbering.subsection = 0;
        currentNumbering.equation = 0;
        currentNumbering.figure = 0;
        this.numericLabel = "" + currentNumbering.chapter;
        this.label = "Chapter " + this.numericLabel;
        this.numberEl.innerText = "" + currentNumbering.chapter + ". ";
        return currentNumbering;
      };

      return ChapterLineAnnotation;

    })(HeaderLineAnnotation);
    SectionLineAnnotation = (function(_super) {
      __extends(SectionLineAnnotation, _super);

      function SectionLineAnnotation() {
        _ref1 = SectionLineAnnotation.__super__.constructor.apply(this, arguments);
        return _ref1;
      }

      SectionLineAnnotation.prototype["class"] = "section";

      SectionLineAnnotation.prototype.updateDocumentNumbering = function(currentNumbering) {
        SectionLineAnnotation.__super__.updateDocumentNumbering.apply(this, arguments);
        currentNumbering.section++;
        currentNumbering.subsection = 0;
        this.numericLabel = "" + currentNumbering.chapter + "." + currentNumbering.section;
        this.label = "Section " + this.numericLabel;
        this.numberEl.innerText = "" + currentNumbering.chapter + "." + currentNumbering.section + ". ";
        return currentNumbering;
      };

      return SectionLineAnnotation;

    })(HeaderLineAnnotation);
    SubsectionLineAnnotation = (function(_super) {
      __extends(SubsectionLineAnnotation, _super);

      function SubsectionLineAnnotation() {
        _ref2 = SubsectionLineAnnotation.__super__.constructor.apply(this, arguments);
        return _ref2;
      }

      SubsectionLineAnnotation.prototype["class"] = "subsection";

      SubsectionLineAnnotation.prototype.updateDocumentNumbering = function(currentNumbering) {
        SubsectionLineAnnotation.__super__.updateDocumentNumbering.apply(this, arguments);
        currentNumbering.subsection++;
        this.numericLabel = "" + currentNumbering.chapter + "." + currentNumbering.section + "." + currentNumbering.subsection;
        this.label = "Subsection " + this.numericLabel;
        this.numberEl.innerText = "" + currentNumbering.chapter + "." + currentNumbering.section + "." + currentNumbering.subsection + ". ";
        return currentNumbering;
      };

      return SubsectionLineAnnotation;

    })(HeaderLineAnnotation);
    return OrchardEditorLineAnnotations = (function(_super) {
      __extends(OrchardEditorLineAnnotations, _super);

      function OrchardEditorLineAnnotations(editor) {
        var _this = this;
        this.editor = editor;
        this._handlers = {};
        this.editor.on("document:annotation:new", function(annotation, lineNo) {
          return _this._onNewDocumentAnnotation(annotation, lineNo);
        });
        this.editor.on("document:annotation:sync", function(annotation, lineNo) {
          return _this._onSyncDocumentAnnotation(annotation, lineNo);
        });
        this.editor.on("document:annotation:remove", function(annotation, lineNo) {
          return _this._onRemoveDocumentAnnotation(annotation, lineNo);
        });
        this.editor.on("document:lines:change", function(lineNo) {
          return _this._onDocumentLinesChange(lineNo);
        });
        this.editor.on("codemirror:line:annotations:change", function(lineNo) {
          return _this._onCodeMirrorLineAnnotationsChange(lineNo);
        });
        this.editor.on("codemirror:lines:change", function(lineNo) {
          return _this._onCodeMirrorLinesChange(lineNo);
        });
        this.editor.on("selection:change", function(newSelection, oldSelection) {
          return _this._onSelectionChange(newSelection, oldSelection);
        });
        this.editor.addLineAnnotation = function() {
          var args;
          args = 1 <= arguments.length ? __slice.call(arguments, 0) : [];
          return _this.addLineAnnotation.apply(_this, args);
        };
        this.editor.removeLineAnnotation = function() {
          var args;
          args = 1 <= arguments.length ? __slice.call(arguments, 0) : [];
          return _this.removeLineAnnotation.apply(_this, args);
        };
        this.editor.getLineAnnotationsOnLine = function() {
          var args;
          args = 1 <= arguments.length ? __slice.call(arguments, 0) : [];
          return _this.getLineAnnotationsOnLine.apply(_this, args);
        };
      }

      OrchardEditorLineAnnotations.prototype.addLineAnnotation = function(line, className) {
        var annotationId, _ref3;
        if (this.editor.options.readonly) {
          return;
        }
        annotationId = this.editor.document.addLineAnnotation(line, className);
        this._initializeLineAnnotationHandler(annotationId, line, className);
        return (_ref3 = this.editor.codemirror) != null ? _ref3.addLineAnnotation(line, className, annotationId) : void 0;
      };

      OrchardEditorLineAnnotations.prototype.removeLineAnnotation = function(annotationId) {
        var _ref3;
        if (this.editor.options.readonly) {
          return;
        }
        this.editor.document.removeLineAnnotation(annotationId);
        this._destroyLineAnnotationHandler(annotationId);
        return (_ref3 = this.editor.codemirror) != null ? _ref3.removeLineAnnotation(annotationId) : void 0;
      };

      OrchardEditorLineAnnotations.prototype.getAllLineAnnotations = function() {
        var annotationId, handler, _ref3, _results;
        _ref3 = this._handlers;
        _results = [];
        for (annotationId in _ref3) {
          handler = _ref3[annotationId];
          _results.push(handler);
        }
        return _results;
      };

      OrchardEditorLineAnnotations.prototype.getLineAnnotationsOnLine = function(line) {
        var annotation, annotations, _i, _len, _ref3;
        annotations = [];
        _ref3 = this.editor.document.getLineAnnotationsOnLine(line);
        for (_i = 0, _len = _ref3.length; _i < _len; _i++) {
          annotation = _ref3[_i];
          if (this._handlers[annotation.id] != null) {
            annotations.push(this._handlers[annotation.id]);
          }
        }
        return annotations;
      };

      OrchardEditorLineAnnotations.prototype.getLineAnnotationsOrderedByLine = function() {
        var annotationId, handler, handlers;
        handlers = (function() {
          var _ref3, _results;
          _ref3 = this._handlers;
          _results = [];
          for (annotationId in _ref3) {
            handler = _ref3[annotationId];
            _results.push(handler);
          }
          return _results;
        }).call(this);
        return handlers.sort(function(a, b) {
          a = a.getLineNumber();
          b = b.getLineNumber();
          if (a > b) {
            return 1;
          } else if (a < b) {
            return -1;
          } else {
            return 0;
          }
        });
      };

      OrchardEditorLineAnnotations.prototype._onNewDocumentAnnotation = function(annotation, lineNo) {
        var _ref3;
        if (annotation.type === "line") {
          this._initializeLineAnnotationHandler(annotation.id, lineNo, annotation["class"]);
          return (_ref3 = this.editor.codemirror) != null ? _ref3.addLineAnnotation(lineNo, annotation["class"], annotation.id) : void 0;
        }
      };

      OrchardEditorLineAnnotations.prototype._onSyncDocumentAnnotation = function(annotation, lineNo) {
        return this._onNewDocumentAnnotation(annotation, lineNo);
      };

      OrchardEditorLineAnnotations.prototype._onRemoveDocumentAnnotation = function(annotation) {
        var _ref3;
        if (annotation.type === "line") {
          this._destroyLineAnnotationHandler(annotation.id);
          return (_ref3 = this.editor.codemirror) != null ? _ref3.removeLineAnnotation(annotation.id) : void 0;
        }
      };

      OrchardEditorLineAnnotations.prototype._onCodeMirrorLineAnnotationsChange = function(lineNo) {
        var annotation, documentAnnotationIds, documentAnnotations, editorAnnotation, editorAnnotations, handler, i, remainingAnnotationId, _i, _j, _len, _len1, _results;
        editorAnnotations = this.editor.codemirror.getLineAnnotationsOnLine(lineNo);
        documentAnnotations = this.editor.document.getLineAnnotationsOnLine(lineNo);
        documentAnnotationIds = (function() {
          var _i, _len, _results;
          _results = [];
          for (_i = 0, _len = documentAnnotations.length; _i < _len; _i++) {
            annotation = documentAnnotations[_i];
            _results.push(annotation.id);
          }
          return _results;
        })();
        debug("editor", "syncing codemirror annotations to doc", editorAnnotations, documentAnnotations, lineNo);
        for (_i = 0, _len = editorAnnotations.length; _i < _len; _i++) {
          editorAnnotation = editorAnnotations[_i];
          if ((i = documentAnnotationIds.indexOf(editorAnnotation.id)) > -1) {
            documentAnnotationIds.splice(i, 1);
          } else {
            this.editor.document.addLineAnnotation(lineNo, editorAnnotation["class"], editorAnnotation.id);
          }
          handler = this._getLineAnnotationHandler(editorAnnotation.id);
          if (handler != null) {
            handler.trigger("codemirror:sync", lineNo);
          }
        }
        debug("editor", "removing remaining document ids", documentAnnotationIds);
        _results = [];
        for (_j = 0, _len1 = documentAnnotationIds.length; _j < _len1; _j++) {
          remainingAnnotationId = documentAnnotationIds[_j];
          _results.push(this.editor.document.removeLineAnnotation(remainingAnnotationId));
        }
        return _results;
      };

      OrchardEditorLineAnnotations.prototype._onCodeMirrorLinesChange = function() {
        var annotationId, handler, _ref3, _results;
        debug("WARNING", "FULL LINE HANDLER SCAN");
        _ref3 = this._handlers;
        _results = [];
        for (annotationId in _ref3) {
          handler = _ref3[annotationId];
          if (handler.getLineNumber() == null) {
            _results.push(this._destroyLineAnnotationHandler(annotationId));
          } else {
            _results.push(void 0);
          }
        }
        return _results;
      };

      OrchardEditorLineAnnotations.prototype._onDocumentLinesChange = function() {
        var annotationId, handler, _ref3, _results;
        debug("WARNING", "FULL LINE HANDLER SCAN");
        _ref3 = this._handlers;
        _results = [];
        for (annotationId in _ref3) {
          handler = _ref3[annotationId];
          _results.push(handler.refresh());
        }
        return _results;
      };

      OrchardEditorLineAnnotations.prototype._onSelectionChange = function(newSelection, oldSelection) {
        var headingType, lineNo, m, match, text, value;
        if ((oldSelection != null) && newSelection.from.line !== oldSelection.from.line) {
          lineNo = oldSelection.from.line;
          text = this.editor.getLineText(lineNo);
          if ((m = text.match(/^\\(chapter|section|subsection)\{(.*?)\}$/))) {
            match = m[0];
            headingType = m[1];
            value = m[2];
            this.editor.replaceRange(value, {
              line: lineNo,
              ch: 0
            }, {
              line: lineNo,
              ch: match.length
            });
            return this.addLineAnnotation(lineNo, headingType);
          }
        }
      };

      OrchardEditorLineAnnotations.prototype._initializeLineAnnotationHandler = function(annotationId, lineNo, className) {
        var HandlerClass, lineHandle, _ref3;
        lineHandle = (_ref3 = this.editor.codemirror) != null ? _ref3.getLineHandle(lineNo) : void 0;
        HandlerClass = {
          "chapter": ChapterLineAnnotation,
          "section": SectionLineAnnotation,
          "subsection": SubsectionLineAnnotation
        }[className];
        if (HandlerClass == null) {
          throw new Error("Unknown line annotation class: " + className);
        }
        this._handlers[annotationId] = new HandlerClass(this.editor, annotationId, lineHandle);
        return this.editor.refreshDocumentNumbering();
      };

      OrchardEditorLineAnnotations.prototype._destroyLineAnnotationHandler = function(annotationId) {
        var _ref3;
        debug("codemirror", "destroying line handle", annotationId);
        if ((_ref3 = this._handlers[annotationId]) != null) {
          _ref3.destroy();
        }
        delete this._handlers[annotationId];
        return this.editor.refreshDocumentNumbering();
      };

      OrchardEditorLineAnnotations.prototype._getLineAnnotationHandler = function(annotationId) {
        return this._handlers[annotationId];
      };

      return OrchardEditorLineAnnotations;

    })(Base);
  });

}).call(this);

(function() {
  var __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
    __slice = [].slice;

  define('orchard/orchard/inline-widgets',["orchard/base", "orchard/debug"], function(Base, debug) {
    var OrchardEditorInlineWidgets;
    return OrchardEditorInlineWidgets = (function(_super) {
      __extends(OrchardEditorInlineWidgets, _super);

      OrchardEditorInlineWidgets.INLINE_WIDGET_TYPES = {};

      function OrchardEditorInlineWidgets(editor) {
        var _this = this;
        this.editor = editor;
        this.editor.on("document:annotation:new", function(annotation, lineNo) {
          return _this._onNewDocumentAnnotation(annotation, lineNo);
        });
        this.editor.on("document:annotation:sync", function(annotation, lineNo) {
          return _this._onSyncDocumentAnnotation(annotation, lineNo);
        });
        this.editor.on("document:annotation:remove", function(annotation, lineNo) {
          return _this._onRemoveDocumentAnnotation(annotation, lineNo);
        });
        this.editor.on("document:annotation:update", function(annotation, lineNo) {
          return _this._onUpdateDocumentAnnotation(annotation, lineNo);
        });
        this.editor.on("codemirror:line:annotations:change", function(lineNo) {
          return _this._onCodeMirrorInlineWidgetsChange(lineNo);
        });
        this.editor.addInlineWidget = function() {
          var args;
          args = 1 <= arguments.length ? __slice.call(arguments, 0) : [];
          return _this.addInlineWidget.apply(_this, args);
        };
      }

      OrchardEditorInlineWidgets.prototype.addInlineWidget = function(lineNo, at, className, data) {
        var annotationId, from, to;
        if (this.editor.options.readonly) {
          return;
        }
        from = at;
        to = at + 1;
        this.editor.startOperation();
        this.editor.insertText(lineNo, at, "?");
        annotationId = this.editor.document.addInlineWidget(lineNo, from, to, className, data);
        this._initializeInlineWidget(annotationId, lineNo, from, to, className, data);
        return this.editor.endOperation();
      };

      OrchardEditorInlineWidgets.prototype.markInlineWidgetElementAsChanged = function(annotationId) {
        var _ref;
        return (_ref = this.editor.codemirror) != null ? _ref.markInlineWidgetElementAsChanged(annotationId) : void 0;
      };

      OrchardEditorInlineWidgets.prototype.getInlineWidgetPosition = function(annotationId) {
        return this.editor.document.getInlineWidgetPosition(annotationId);
      };

      OrchardEditorInlineWidgets.prototype.getInlineWidgetsOnLine = function(lineNo) {
        var annotation, widget, widgets, _i, _len, _ref, _ref1;
        widgets = [];
        _ref = this.editor.document.getInlineWidgetsOnLine(lineNo);
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          annotation = _ref[_i];
          if (widget = (_ref1 = this._handlers) != null ? _ref1[annotation.id] : void 0) {
            widgets.push(widget);
          }
        }
        return widgets;
      };

      OrchardEditorInlineWidgets.prototype.getInlineWidget = function(annotationId) {
        return this._handlers[annotationId];
      };

      OrchardEditorInlineWidgets.prototype._initializeInlineWidget = function(annotationId, lineNo, from, to, className, data) {
        var WidgetClass, widget, _ref;
        debug("editor", "initializing inline widget", {
          id: annotationId,
          "class": className,
          data: data
        });
        WidgetClass = OrchardEditorInlineWidgets.INLINE_WIDGET_TYPES[className];
        widget = new WidgetClass(this.editor, annotationId, data);
        this._handlers || (this._handlers = {});
        this._handlers[annotationId] = widget;
        if ((_ref = this.editor.codemirror) != null) {
          _ref.addInlineWidget(lineNo, from, to, widget.el, annotationId);
        }
        widget.trigger("dom:insert");
        this.editor.trigger("inlineWidget:new", widget);
        return widget;
      };

      OrchardEditorInlineWidgets.prototype._destroyInlineWidgetHandler = function(annotationId) {
        var _ref;
        if ((_ref = this._handlers[annotationId]) != null) {
          if (typeof _ref.destroy === "function") {
            _ref.destroy();
          }
        }
        return delete this._handlers[annotationId];
      };

      OrchardEditorInlineWidgets.prototype._onNewDocumentAnnotation = function(annotation, lineNo) {
        if (annotation.type === "inline-widget") {
          return this._initializeInlineWidget(annotation.id, lineNo, annotation.from, annotation.to, annotation["class"], annotation.data);
        }
      };

      OrchardEditorInlineWidgets.prototype._onSyncDocumentAnnotation = function(annotation, lineNo) {
        return this._onNewDocumentAnnotation(annotation, lineNo);
      };

      OrchardEditorInlineWidgets.prototype._onRemoveDocumentAnnotation = function(annotation, lineNo) {
        var _ref;
        if (annotation.type === "inline-widget") {
          this._destroyInlineWidgetHandler(annotation.id);
          return (_ref = this.editor.codemirror) != null ? _ref.removeInlineWidget(annotation.id) : void 0;
        }
      };

      OrchardEditorInlineWidgets.prototype._onUpdateDocumentAnnotation = function(annotation) {
        var widget;
        if (annotation.type === "inline-widget") {
          widget = this.getInlineWidget(annotation.id);
          if (widget == null) {
            return;
          }
          return widget.setAttributes(annotation.data);
        }
      };

      OrchardEditorInlineWidgets.prototype._onCodeMirrorInlineWidgetsChange = function(lineNo) {
        var annotation, documentWidgetIds, documentWidgets, editorWidget, editorWidgets, i, remainingWidgetId, _i, _j, _len, _len1, _results;
        editorWidgets = this.editor.codemirror.getInlineWidgetsOnLine(lineNo);
        documentWidgets = this.editor.document.getInlineWidgetsOnLine(lineNo);
        documentWidgetIds = (function() {
          var _i, _len, _results;
          _results = [];
          for (_i = 0, _len = documentWidgets.length; _i < _len; _i++) {
            annotation = documentWidgets[_i];
            _results.push(annotation.id);
          }
          return _results;
        })();
        debug("editor", "syncing codemirror inline widgets to doc", editorWidgets, documentWidgets, lineNo);
        for (_i = 0, _len = editorWidgets.length; _i < _len; _i++) {
          editorWidget = editorWidgets[_i];
          if ((i = documentWidgetIds.indexOf(editorWidget.id)) > -1) {
            this.editor.document.moveInlineWidget(documentWidgetIds[i], editorWidget.from.ch, editorWidget.to.ch);
            documentWidgetIds.splice(i, 1);
          }
        }
        debug("editor", "removing remaining document ids", documentWidgetIds);
        _results = [];
        for (_j = 0, _len1 = documentWidgetIds.length; _j < _len1; _j++) {
          remainingWidgetId = documentWidgetIds[_j];
          this._destroyInlineWidgetHandler(remainingWidgetId);
          _results.push(this.editor.document.removeInlineWidget(remainingWidgetId));
        }
        return _results;
      };

      return OrchardEditorInlineWidgets;

    })(Base);
  });

}).call(this);

(function() {
  var __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };

  define('orchard/undo',["orchard/base", "orchard/debug"], function(Base, debug) {
    var OrchardUndoManager;
    return OrchardUndoManager = (function(_super) {
      __extends(OrchardUndoManager, _super);

      function OrchardUndoManager(editor) {
        this.editor = editor;
        this._bindToEditorEvents();
        this.undoStack = [];
        this.redoStack = [];
      }

      OrchardUndoManager.prototype._bindToEditorEvents = function() {
        var _this = this;
        this.editor.on("undo", function() {
          return _this.undo();
        });
        this.editor.on("redo", function() {
          return _this.redo();
        });
        this.editor.document.on("op:local", function(op) {
          return _this._onChange(op);
        });
        return this.editor.document.on("op:remote", function(op) {
          return _this._onChange(op);
        });
      };

      OrchardUndoManager.prototype.undo = function() {
        var op,
          _this = this;
        op = this.undoStack.pop();
        if (op == null) {
          return;
        }
        this.redoStack.push(op);
        this.ignoreNextOp = true;
        return this.editor.document.triggeringEvents(function() {
          return _this.editor.revertRawOp(op);
        });
      };

      OrchardUndoManager.prototype.redo = function() {
        var op,
          _this = this;
        op = this.redoStack.pop();
        if (op == null) {
          return;
        }
        this.undoStack.push(op);
        this.ignoreNextOp = true;
        return this.editor.document.triggeringEvents(function() {
          return _this.editor.applyRawOp(op);
        });
      };

      OrchardUndoManager.prototype._onChange = function(op) {
        if (this.ignoreNextOp) {
          return delete this.ignoreNextOp;
        } else {
          this.undoStack.push(op);
          return this.redoStack = [];
        }
      };

      return OrchardUndoManager;

    })(Base);
  });

}).call(this);

(function() {
  var __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };

  define('orchard/copyandpaste',["orchard/base", "orchard/debug"], function(Base, debug) {
    var OrchardCopyAndPasteManager;
    return OrchardCopyAndPasteManager = (function(_super) {
      __extends(OrchardCopyAndPasteManager, _super);

      function OrchardCopyAndPasteManager(editor) {
        this.editor = editor;
        this._bindToEvents();
      }

      OrchardCopyAndPasteManager.prototype._bindToEvents = function() {};

      OrchardCopyAndPasteManager.prototype.copy = function() {
        var content, selection;
        selection = this.editor.getSelection();
        if (selection != null) {
          content = this.editor.document.getRawRange(selection.from, selection.to);
          return $.localStorage("orchard.clipboard", JSON.stringify(content));
        }
      };

      OrchardCopyAndPasteManager.prototype.paste = function(e) {
        var content, selection,
          _this = this;
        content = $.localStorage("orchard.clipboard");
        if (content == null) {
          return;
        }
        e.preventDefault();
        content = JSON.parse(content);
        selection = this.editor.getSelection();
        if (selection == null) {
          return;
        }
        return this.editor.document.triggeringEvents(function() {
          _this.editor.document.recreateAnnotationIds(content);
          return _this.editor.document.insertRawRange(selection.from, content);
        });
      };

      return OrchardCopyAndPasteManager;

    })(Base);
  });

}).call(this);

(function() {
  var __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };

  define('orchard/widgets/widget',["orchard/base", "orchard/event", "orchard/debug"], function(Base, Events, debug) {
    var Widget;
    return Widget = (function(_super) {
      __extends(Widget, _super);

      Widget.include(Events);

      function Widget(editor, annotationId, data) {
        var _this = this;
        this.editor = editor;
        this.annotationId = annotationId;
        this.data = data;
        if (typeof document !== "undefined" && document !== null) {
          this.el = document.createElement("div");
          this.el.setAttribute("class", "oe-widget");
          this.el.innerHTML = this.template;
          this.el.onclick = function() {
            var _ref;
            if ((_ref = _this.editor.widgets) != null) {
              _ref.deselectWidgets();
            }
            return _this.select();
          };
          this._bindToSelectionEvents();
        }
        this._setDefaults();
        this._createDataBindings();
      }

      Widget.prototype.destroy = function() {
        var _ref;
        this.off();
        return (_ref = this.el) != null ? _ref.remove() : void 0;
      };

      Widget.prototype.getLineNumber = function() {
        return this.editor.widgets.getWidgetLineNo(this.annotationId);
      };

      Widget.prototype.setAttributes = function(attributes) {
        var key, oldAttributes, value, _ref, _results;
        oldAttributes = this.data;
        this.data = attributes;
        _ref = this.data;
        for (key in _ref) {
          value = _ref[key];
          if (oldAttributes[key] !== this.data[key]) {
            this.trigger("" + key + ":update", this.data[key], oldAttributes[key]);
          }
          delete oldAttributes[key];
        }
        _results = [];
        for (key in oldAttributes) {
          value = oldAttributes[key];
          _results.push(this.trigger("" + key + ":update", null, oldAttributes[key]));
        }
        return _results;
      };

      Widget.prototype.getAttribute = function(attribute) {
        return this.data[attribute];
      };

      Widget.prototype.setAttribute = function(attribute, value) {
        var oldValue;
        oldValue = this.data[attribute];
        this.data[attribute] = value;
        this.trigger("" + attribute + ":update", value, oldValue);
        return this.editor.document.setWidgetAttribute(this.annotationId, attribute, value);
      };

      Widget.prototype.select = function() {
        var _ref;
        if (this.selected) {
          return;
        }
        if ((_ref = this.editor.widgets) != null) {
          _ref.deselectWidgets();
        }
        this.trigger("selected");
        this.selected = true;
        return this.markAsChanged();
      };

      Widget.prototype.deselect = function() {
        if (!this.selected) {
          return;
        }
        if (this.selected) {
          this.trigger("deselected");
        }
        return this.selected = false;
      };

      Widget.prototype.markAsChanged = function() {
        return this.editor.widgets.markWidgetElementAsChanged(this.annotationId);
      };

      Widget.prototype._setDefaults = function() {
        var attribute, currentValue, value, _ref, _results;
        _ref = this.defaults || {};
        _results = [];
        for (attribute in _ref) {
          value = _ref[attribute];
          currentValue = this.getAttribute(attribute);
          if (currentValue == null) {
            _results.push(this.setAttribute(attribute, value));
          } else {
            _results.push(void 0);
          }
        }
        return _results;
      };

      Widget.prototype._createDataBindings = function() {
        var $boundEl, $el, attribute, boundEl, match, _, _i, _j, _len, _len1, _ref, _ref1, _ref2, _results;
        if (this.el != null) {
          $el = $(this.el);
          _ref = $el.find("[data-oe-binding]");
          for (_i = 0, _len = _ref.length; _i < _len; _i++) {
            boundEl = _ref[_i];
            $boundEl = $(boundEl);
            attribute = $boundEl.data("oe-binding");
            if ($boundEl.prop("tagName") === "SELECT") {
              this._bindToSelectEl($boundEl, attribute);
            } else if ($boundEl.data("oe-richtext") != null) {
              this._createEditorEl($boundEl[0], attribute);
            }
          }
          return this.markAsChanged();
        } else {
          _ref1 = this.template.match(/data-oe-binding=('|")(.*?)('|") data-oe-richtext/g);
          _results = [];
          for (_j = 0, _len1 = _ref1.length; _j < _len1; _j++) {
            match = _ref1[_j];
            _ref2 = match.match(/data-oe-binding=('|")(.*?)('|")/), match = _ref2[0], _ = _ref2[1], attribute = _ref2[2];
            _results.push(this._createEditorEl(null, attribute));
          }
          return _results;
        }
      };

      Widget.prototype._bindToSelectEl = function($el, attribute) {
        var updateDom,
          _this = this;
        if (this.editor.options.readonly) {
          $el.attr("disabled", "disabled");
        }
        $el.selectpicker({
          showContent: true
        });
        $el.on("change", function() {
          var value;
          value = $el.val();
          return _this.setAttribute(attribute, value);
        });
        this.on("" + attribute + ":update", updateDom = function() {
          $el.val(_this.getAttribute(attribute));
          return $el.selectpicker("refresh");
        });
        return updateDom();
      };

      Widget.prototype._createEditorEl = function(el, attribute) {
        var OrchardEditor, editor,
          _this = this;
        OrchardEditor = require("orchard/orchard");
        this["" + attribute + "Editor"] = editor = new OrchardEditor(el, this.editor.widgets.getWidgetDataSubdoc(this.annotationId, [attribute]), {
          simple: true
        }, this.editor);
        this.editors || (this.editors = []);
        this.editors.push(editor);
        setTimeout(function() {
          editor.refresh();
          return _this.markAsChanged();
        }, 0);
        editor.on("selection:hitSide", function(direction) {
          return _this._moveCursorToNextEditor(editor, direction);
        });
        return editor.on("change", function() {
          return _this.markAsChanged();
        });
      };

      Widget.prototype._bindToSelectionEvents = function() {
        var _this = this;
        $(this.displayEl).on("click", function() {
          return _this.trigger("cursorEnter");
        });
        this.on("cursorEnter", function(direction) {
          _this._moveCursorToFirstEditor(direction);
          return _this.select();
        });
        return this.on("cursorLeave", function(direction) {
          _this._moveCursorToFirstEditor(direction);
          return _this.deselect();
        });
      };

      Widget.prototype._moveCursorToNextEditor = function(editor, direction) {
        var index;
        index = this.editors.indexOf(editor);
        if (index < 0) {
          return this.trigger("cursorLeave", direction);
        } else if (direction === "top") {
          if (index === 0) {
            return this.trigger("cursorLeave", direction);
          } else {
            return this.editors[index - 1].focus();
          }
        } else if (direction === "bottom") {
          if (index === this.editors.length - 1) {
            return this.trigger("cursorLeave", direction);
          } else {
            return this.editors[index + 1].focus();
          }
        }
      };

      Widget.prototype._moveCursorToFirstEditor = function(direction) {
        var _ref, _ref1;
        this.editors || (this.editors = []);
        if (direction === "top") {
          return (_ref = this.editors[0]) != null ? _ref.focus() : void 0;
        } else if (direction === "bottom") {
          return (_ref1 = this.editors[this.editors.length - 1]) != null ? _ref1.focus() : void 0;
        }
      };

      return Widget;

    })(Base);
  });

}).call(this);

(function() {
  var __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };

  define('orchard/widgets/figure',["orchard/orchard/widgets", "orchard/widgets/widget", "orchard/debug"], function(OrchardEditorWidgets, Widget, debug) {
    var FigureWidget;
    FigureWidget = (function(_super) {
      var w;

      __extends(FigureWidget, _super);

      FigureWidget.prototype.defaults = {
        width: "60",
        caption: {
          lines: [
            {
              text: "Caption",
              annotations: []
            }
          ]
        }
      };

      FigureWidget.prototype.template = "<figure class=\"oe-figure\">\n	<div class=\"oe-figure-image-wrapper\">\n		<img class=\"oe-figure-image\" src=\"http://www.sharelatex.com/img/logo/lion-128.png\" style=\"width: 100%; height: 100%;\"></img>\n		<div class=\"oe-figure-image-placeholder\" style=\"width: 100%; height: 100%;\"></div>\n	</div>\n	<figcaption class=\"oe-figure-caption\">\n		<div class=\"oe-figure-caption-text\" data-oe-binding=\"caption\" data-oe-richtext=\"true\" data-placeholder=\"Caption\"></div>\n	</figcaption>\n	<div class=\"oe-figure-toolbar\">\n		<select class=\"oe-figure-width-selector show-tick\"\n			data-container=\"body\"\n			data-oe-binding=\"width\">\n			" + ((function() {
        var _i, _len, _ref, _results;
        _ref = [20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100];
        _results = [];
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          w = _ref[_i];
          _results.push("<option value='" + w + "' title='Width: " + w + "%'>						" + w + "%					</option>");
        }
        return _results;
      })()) + "\n		</select>\n	</div>\n</figure>";

      function FigureWidget(editor, annotationId, data) {
        var _ref, _ref1, _ref2, _ref3, _ref4,
          _this = this;
        this.editor = editor;
        this.annotationId = annotationId;
        this.data = data;
        FigureWidget.__super__.constructor.call(this, this.editor, this.annotationId, this.data);
        this.figureEl = (_ref = this.el) != null ? _ref.getElementsByClassName("oe-figure")[0] : void 0;
        this.imgEl = (_ref1 = this.el) != null ? _ref1.getElementsByClassName("oe-figure-image")[0] : void 0;
        this.imgWrapperEl = (_ref2 = this.el) != null ? _ref2.getElementsByClassName("oe-figure-image-wrapper")[0] : void 0;
        this.placeholderEl = (_ref3 = this.el) != null ? _ref3.getElementsByClassName("oe-figure-image-placeholder")[0] : void 0;
        this.captionEl = (_ref4 = this.el) != null ? _ref4.getElementsByClassName("oe-figure-caption-text")[0] : void 0;
        this.on("imageId:update", function() {
          return _this.loadImage();
        });
        this.on("image:load", function() {
          return _this.refreshImageSize();
        });
        this.on("image:clear", function() {
          return _this.refreshImageSize();
        });
        this.on("width:update", function() {
          return _this.refreshImageSize();
        });
        this.createFigureLabel();
        this.on("dom:insert", function() {
          return _this.loadImage();
        });
      }

      FigureWidget.prototype.destroy = function() {
        FigureWidget.__super__.destroy.apply(this, arguments);
        return this.editor.refreshDocumentNumbering();
      };

      FigureWidget.prototype.updateDocumentNumbering = function(currentNumbering) {
        this.currentNumbering = currentNumbering;
        this.currentNumbering.figure++;
        this.numericLabel = "" + this.currentNumbering.chapter + "." + this.currentNumbering.figure;
        this.label = "Figure " + this.numericLabel;
        this.refreshFigureLabel();
        return this.currentNumbering;
      };

      FigureWidget.prototype.refreshImageSize = function() {
        var imageWidth, width;
        width = parseInt(this.getAttribute("width"), 10) / 100;
        if ((this.el != null) && (this.aspectRatio != null)) {
          imageWidth = this.figureWidth() * width;
          if (this._resizableInited) {
            this._destroyResizable();
          }
          $(this.imgWrapperEl).width(imageWidth);
          $(this.imgWrapperEl).height(imageWidth / this.aspectRatio);
          this._initResizable();
        }
        return this.markAsChanged();
      };

      FigureWidget.prototype.createFigureLabel = function() {
        var _ref,
          _this = this;
        if (typeof document !== "undefined" && document !== null) {
          this.figureLabel = document.createElement("span");
          this.figureLabel.className = "oe-figure-number oe-non-editable";
          this.refreshFigureLabel();
          this._labelBookmark = (_ref = this.captionEditor.codemirror) != null ? _ref.addBookmark({
            line: 0,
            ch: 0
          }, this.figureLabel) : void 0;
          return this.captionEditor.on("change", function() {
            var _ref1, _ref2;
            if ((_ref1 = _this._labelBookmark) != null) {
              _ref1.clear();
            }
            return _this._labelBookmark = (_ref2 = _this.captionEditor.codemirror) != null ? _ref2.addBookmark({
              line: 0,
              ch: 0
            }, _this.figureLabel) : void 0;
          });
        }
      };

      FigureWidget.prototype.refreshFigureLabel = function() {
        var _ref;
        return (_ref = this.figureLabel) != null ? _ref.innerHTML = this.label + "&nbsp;" : void 0;
      };

      FigureWidget.prototype.loadImage = function() {
        var OrchardEditor, imageId, _ref, _ref1, _ref2,
          _this = this;
        imageId = this.getAttribute("imageId");
        debug("figure", "loading image", imageId);
        if (imageId != null) {
          OrchardEditor = require("orchard/orchard");
          return OrchardEditor.convertImageIdToUrl(imageId, function(error, url) {
            var _ref, _ref1, _ref2, _ref3;
            if ((_ref = _this.imgEl) != null) {
              _ref.onload = function() {
                debug("figure", "image loaded", url);
                _this.aspectRatio = _this.imgEl.width / _this.imgEl.height;
                return _this.trigger("image:load");
              };
            }
            if ((_ref1 = _this.imgEl) != null) {
              _ref1.setAttribute("src", url);
            }
            if ((_ref2 = _this.imgEl) != null) {
              _ref2.style.display = "";
            }
            return (_ref3 = _this.placeholderEl) != null ? _ref3.style.display = "none" : void 0;
          });
        } else {
          debug("figure", "no image found");
          if ((_ref = this.imgEl) != null) {
            _ref.setAttribute("src", "");
          }
          if ((_ref1 = this.imgEl) != null) {
            _ref1.style.display = "none";
          }
          if ((_ref2 = this.placeholderEl) != null) {
            _ref2.style.display = "";
          }
          this.aspectRatio = 1.6;
          return this.trigger("image:clear");
        }
      };

      FigureWidget.prototype.convertToTex = function(options, callback) {
        var width,
          _this = this;
        if (options == null) {
          options = {};
        }
        if (callback == null) {
          callback = function(error, tex) {};
        }
        options.convertImageIdToFilePath || (options.convertImageIdToFilePath = function(imageId, callback) {
          if (callback == null) {
            callback = function(error, path) {};
          }
          return callback(null, "images/" + imageId + ".png");
        });
        width = parseInt(this.getAttribute("width") || "60", 10) / 100;
        return options.convertImageIdToFilePath(this.getAttribute("imageId"), function(error, path) {
          if (error != null) {
            return callback(error);
          }
          return callback(null, "\\begin{figure}\n	\\centering\n	\\includegraphics[width=" + width + "\\textwidth]{" + path + "}\n	\\caption{" + (_this.captionEditor.getValue()) + "}\n	\\label{" + _this.annotationId + "}\n\\end{figure}");
        });
      };

      FigureWidget.prototype._destroyResizable = function() {
        this._resizableInited = false;
        return $(this.imgWrapperEl).resizable("destroy");
      };

      FigureWidget.prototype._initResizable = function() {
        var fivePercentGrid, fullWidth,
          _this = this;
        fullWidth = $(this.figureEl).innerWidth();
        fivePercentGrid = fullWidth / 20;
        $(this.imgWrapperEl).resizable({
          aspectRatio: this.aspectRatio,
          grid: [fivePercentGrid, fivePercentGrid / this.aspectRatio],
          minWidth: 4 * fivePercentGrid,
          maxWidth: fullWidth,
          minHeight: 4 * fivePercentGrid / this.aspectRatio,
          stop: function() {
            var ratio, width;
            ratio = $(_this.imgWrapperEl).outerWidth() / _this.figureWidth();
            width = _this._roundToNearestFivePercent(ratio).toString();
            return _this.setAttribute("width", width);
          }
        });
        return this._resizableInited = true;
      };

      FigureWidget.prototype._roundToNearestFivePercent = function(float) {
        return Math.round(float / 0.05) * 5;
      };

      FigureWidget.prototype.figureWidth = function() {
        return $(this.figureEl).innerWidth();
      };

      return FigureWidget;

    })(Widget);
    OrchardEditorWidgets.WIDGET_TYPES["figure"] = FigureWidget;
    return FigureWidget;
  });

}).call(this);

(function() {
  var __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };

  define('orchard/ui',["orchard/base", "orchard/event", "orchard/widgets/figure", "orchard/debug"], function(Base, Events, FigureWidget, debug) {
    var HEADING_CLASSES, OrchardUI;
    HEADING_CLASSES = ["chapter", "section", "subsection"];
    OrchardUI = (function(_super) {
      __extends(OrchardUI, _super);

      OrchardUI.include(Events);

      function OrchardUI(editor) {
        this.bindToEditor(editor);
      }

      OrchardUI.prototype.bindToEditor = function(editor) {
        var widget, _i, _len, _ref, _ref1, _results,
          _this = this;
        if (this.editor != null) {
          this.editor.off("selection:change", this._onSelectionChange);
          this.editor.off("widget:new", this._onNewWidget);
        }
        this.editor = editor;
        this._onSelectionChange = function(selection) {
          return _this.onSelectionChange(selection);
        };
        this.editor.on("selection:change", this._onSelectionChange);
        this._onNewWidget = function(widget) {
          return _this.onNewWidget(widget);
        };
        this.editor.on("widget:new", this._onNewWidget);
        _ref1 = ((_ref = this.editor.widgets) != null ? _ref.getWidgets() : void 0) || [];
        _results = [];
        for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
          widget = _ref1[_i];
          _results.push(this.onNewWidget(widget));
        }
        return _results;
      };

      OrchardUI.prototype.onSelectionChange = function(selection) {
        var annotation, annotations, className, line, _i, _len;
        line = selection.from.line;
        if (line === selection.to.line) {
          annotations = this.editor.getLineAnnotationsOnLine(line);
          className = null;
          for (_i = 0, _len = annotations.length; _i < _len; _i++) {
            annotation = annotations[_i];
            if (HEADING_CLASSES.indexOf(annotation["class"]) > -1) {
              className = annotation["class"];
              break;
            }
          }
          debug("toolbar", "selection line class", className);
          if (className != null) {
            return $("#line-class").val(className);
          } else {
            return $("#line-class").val("paragraph");
          }
        } else {
          return debug("toolbar", "multi selection... don't know what to do yet!");
        }
      };

      OrchardUI.prototype.onLineClassChange = function(className) {
        var annotation, annotations, line, selection, _i, _len;
        if (this.editor.options.readonly) {
          return;
        }
        selection = this.editor.getSelection();
        line = selection.from.line;
        if (line === selection.to.line) {
          annotations = this.editor.getLineAnnotationsOnLine(line);
          for (_i = 0, _len = annotations.length; _i < _len; _i++) {
            annotation = annotations[_i];
            if (HEADING_CLASSES.indexOf(annotation["class"]) > -1) {
              this.editor.removeLineAnnotation(annotation.annotationId);
            }
          }
          debug("toolbar", "setting line class", className);
          if (className !== "paragraph") {
            return this.editor.addLineAnnotation(line, className);
          }
        } else {
          return debug("toolbar", "multi selection... don't know what to do yet!");
        }
      };

      OrchardUI.prototype.insertMath = function() {
        var selection, selectionPosition;
        if (this.editor.options.readonly) {
          return;
        }
        selectionPosition = this.editor.getSelection();
        selection = this.editor.getSelectedText();
        this.editor.replaceSelection("\\( " + selection + " \\)");
        this.editor.setCursor({
          line: selectionPosition.from.line,
          ch: selectionPosition.from.ch + 3
        });
        return this.editor.focus();
      };

      OrchardUI.prototype.insertWidget = function(type) {
        var selectionPosition;
        if (this.editor.options.readonly) {
          return;
        }
        selectionPosition = this.editor.getSelection();
        this.editor.startOperation();
        this.editor.replaceSelection("\n\n", "end");
        this.editor.addWidget(selectionPosition.from.line + 1, type, {});
        this.editor.endOperation();
        return this.editor.setCursor({
          line: selectionPosition.from.line + 2,
          ch: 0
        });
      };

      OrchardUI.prototype.insertCitation = function() {
        var selectionPosition;
        if (this.editor.options.readonly) {
          return;
        }
        selectionPosition = this.editor.getSelection();
        return this.editor.addInlineWidget(selectionPosition.from.line, selectionPosition.from.ch, "citation", {});
      };

      OrchardUI.prototype.insertReference = function() {
        var selectionPosition;
        if (this.editor.options.readonly) {
          return;
        }
        selectionPosition = this.editor.getSelection();
        return this.editor.addInlineWidget(selectionPosition.from.line, selectionPosition.from.ch, "reference", {});
      };

      OrchardUI.prototype.onNewWidget = function(widget) {
        this.trigger("widget:new", widget);
        widget.on("selected", function() {
          return $(widget.el).addClass("oe-widget-selected");
        });
        return widget.on("deselected", function() {
          return $(widget.el).removeClass("oe-widget-selected");
        });
      };

      return OrchardUI;

    })(Base);
    return OrchardUI;
  });

}).call(this);

(function() {
  var __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };

  define('orchard/inline-widgets/inline-widget',["orchard/base", "orchard/event", "orchard/debug"], function(Base, Events, debug) {
    var InlineWidget, _ref;
    return InlineWidget = (function(_super) {
      __extends(InlineWidget, _super);

      function InlineWidget() {
        _ref = InlineWidget.__super__.constructor.apply(this, arguments);
        return _ref;
      }

      InlineWidget.include(Events);

      InlineWidget.prototype.getAttribute = function(attribute) {
        return this.data[attribute];
      };

      InlineWidget.prototype.setAttribute = function(attribute, value) {
        var oldValue;
        oldValue = this.data[attribute];
        this.data[attribute] = value;
        this.trigger("" + attribute + ":update", value, oldValue);
        return this.editor.document.setWidgetAttribute(this.annotationId, attribute, value);
      };

      InlineWidget.prototype.setAttributes = function(attributes) {
        var key, oldAttributes, value, _ref1, _results;
        oldAttributes = this.data;
        this.data = attributes;
        _ref1 = this.data;
        for (key in _ref1) {
          value = _ref1[key];
          if (oldAttributes[key] !== this.data[key]) {
            this.trigger("" + key + ":update", this.data[key], oldAttributes[key]);
          }
          delete oldAttributes[key];
        }
        _results = [];
        for (key in oldAttributes) {
          value = oldAttributes[key];
          _results.push(this.trigger("" + key + ":update", null, oldAttributes[key]));
        }
        return _results;
      };

      InlineWidget.prototype.markAsChanged = function() {
        return this.editor.inlineWidgets.markInlineWidgetElementAsChanged(this.annotationId);
      };

      InlineWidget.prototype.refreshSelectEl = function() {
        if (this.selectEl == null) {
          return;
        }
        $(this.selectEl).selectpicker("refresh");
        $(this.el).find(".caret").hide();
        $(this.el).find(".filter-option").css({
          position: "static"
        });
        $(this.el).find(".dropdown-toggle").css({
          width: "auto"
        });
        return $(this.el).find(".bootstrap-select").css({
          width: "auto"
        });
      };

      return InlineWidget;

    })(Base);
  });

}).call(this);

(function() {
  var __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };

  define('orchard/inline-widgets/dropdown-widget',["orchard/inline-widgets/inline-widget", "orchard/debug"], function(InlineWidget, debug) {
    var DropdownWidget;
    return DropdownWidget = (function(_super) {
      __extends(DropdownWidget, _super);

      DropdownWidget.prototype.className = "";

      function DropdownWidget(editor, annotationId, data) {
        var _ref,
          _this = this;
        this.editor = editor;
        this.annotationId = annotationId;
        this.data = data;
        this.el = typeof document !== "undefined" && document !== null ? document.createElement("span") : void 0;
        if (this.el != null) {
          this.el.innerHTML = this.template;
          this.el.setAttribute("class", this.className);
          this.selectEl = (_ref = this.el) != null ? _ref.getElementsByTagName("select")[0] : void 0;
          if (this.editor.options.readonly) {
            this.selectEl.setAttribute("disabled", "disabled");
          }
          $(this.selectEl).selectpicker({
            showContent: false
          });
          this._bindToSelect();
        }
        this._bindToEditor();
        this.on("dom:insert", function() {
          return _this._onDomInsert();
        });
      }

      DropdownWidget.prototype.destory = function() {
        return this._unbindFromEditor();
      };

      DropdownWidget.prototype._onDomInsert = function() {
        return this._refresh();
      };

      DropdownWidget.prototype._refresh = function() {
        var bibliography, child, citationId, option, options, reference, references, _i, _j, _len, _len1, _ref;
        if (this.el == null) {
          return;
        }
        while (child = this.selectEl.children[0]) {
          child.remove();
        }
        references = [];
        _ref = this.editor.bibliographies || [];
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          bibliography = _ref[_i];
          references = references.concat(bibliography.getReferencesAsArray());
        }
        debug("BIBLIOGRAPHIES", references);
        citationId = this.getAttribute("citationId");
        option = $("<option/>");
        option.attr("value", "");
        option.attr("title", "?");
        option.text("None");
        $(this.selectEl).append(option);
        options = [];
        for (_j = 0, _len1 = references.length; _j < _len1; _j++) {
          reference = references[_j];
          option = $("<option/>");
          option.attr("value", reference.key);
          option.attr("data-content", reference.html);
          option.attr("title", "(" + reference.AUTHOR + ", " + reference.YEAR + ")");
          if (citationId === reference.key) {
            option.attr("selected", "true");
          }
          $(this.selectEl).append(option);
        }
        this.refreshSelectEl();
        return this.markAsChanged();
      };

      return DropdownWidget;

    })(InlineWidget);
  });

}).call(this);

(function() {
  var __bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
    __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };

  define('orchard/widgets/block-math',["orchard/orchard/widgets", "orchard/widgets/widget", "orchard/debug"], function(OrchardEditorWidgets, Widget, debug) {
    var BlockMathWidget;
    BlockMathWidget = (function(_super) {
      __extends(BlockMathWidget, _super);

      BlockMathWidget.prototype.defaults = {
        numbering: "on"
      };

      BlockMathWidget.prototype.template = "<div class=\"oe-block-math\">\n	<div class=\"oe-block-math-editor-wrapper\">\n		<div class=\"oe-block-math-toolbar\">\n			<select class=\"oe-block-math-numbering-select selectpicker show-tick\" \n				data-container=\"body\"\n				data-oe-binding=\"numbering\">\n					<option value=\"on\" title=\"Numbering: On\">On</option>\n					<option value=\"off\" title=\"Numbering: Off\">Off</options>\n			</select>\n		</div>\n		<div class=\"oe-block-math-editor\" data-oe-binding=\"math\" data-oe-richtext=\"true\" data-placeholder=\"E = mc^2\"></div>\n	</div>\n	<div class=\"oe-block-math-display\">RenderedView</div>\n</div>";

      function BlockMathWidget(editor, annotationId, data) {
        var _ref, _ref1,
          _this = this;
        this.editor = editor;
        this.annotationId = annotationId;
        this.data = data;
        this._runMathJax = __bind(this._runMathJax, this);
        BlockMathWidget.__super__.constructor.call(this, this.editor, this.annotationId, this.data);
        if (this.el != null) {
          this.editorEl = (_ref = this.el) != null ? _ref.getElementsByClassName("oe-block-math-editor-wrapper")[0] : void 0;
          this.displayEl = (_ref1 = this.el) != null ? _ref1.getElementsByClassName("oe-block-math-display")[0] : void 0;
          this.bindToSelectEvents();
          this.bindToRemoteChanges();
          this.switchToRenderedView();
          this.on("numbering:update", function() {
            return _this._renderMathJax();
          });
        }
      }

      BlockMathWidget.prototype.destroy = function() {
        BlockMathWidget.__super__.destroy.apply(this, arguments);
        return this.editor.refreshDocumentNumbering();
      };

      BlockMathWidget.prototype.bindToSelectEvents = function() {
        var _this = this;
        this.on("selected", function() {
          return _this.switchToEditorView();
        });
        return this.on("deselected", function() {
          return _this.switchToRenderedView();
        });
      };

      BlockMathWidget.prototype.bindToRemoteChanges = function() {
        var _this = this;
        return this.mathEditor.document.on("op:remote", function() {
          return _this._renderMathJax();
        });
      };

      BlockMathWidget.prototype.updateDocumentNumbering = function(currentNumbering) {
        this.currentNumbering = {
          chapter: currentNumbering.chapter,
          section: currentNumbering.section,
          subsection: currentNumbering.subsection,
          equation: currentNumbering.equation + 1
        };
        this._updateLabels(this.currentNumbering);
        this.numericLabel = "" + this.currentNumbering.chapter + "." + this.currentNumbering.equation;
        this.label = "Equation " + this.numericLabel;
        if (this.labelIds != null) {
          currentNumbering.equation += this.labelIds.length;
        }
        return currentNumbering;
      };

      BlockMathWidget.prototype.convertToTex = function(options, callback) {
        if (callback == null) {
          callback = function(error, tex) {};
        }
        return callback(null, this._getAsTex());
      };

      BlockMathWidget.prototype.switchToEditorView = function() {
        $(this.displayEl).hide();
        $(this.editorEl).show();
        this.mathEditor.refresh();
        return this.markAsChanged();
      };

      BlockMathWidget.prototype.switchToRenderedView = function() {
        $(this.displayEl).show();
        $(this.editorEl).hide();
        this._renderMathJax();
        return this.markAsChanged();
      };

      BlockMathWidget.prototype._renderMathJax = function() {
        var _ref;
        if ((_ref = this.displayEl) != null) {
          _ref.innerText = "\\[" + (this._getAsTex()) + "\\]";
        }
        return typeof MathJax !== "undefined" && MathJax !== null ? MathJax.Hub.Queue(["_runMathJax", this]) : void 0;
      };

      BlockMathWidget.prototype._getAsTex = function() {
        var numbered, value;
        numbered = this.getAttribute("numbering") === "on";
        value = this.mathEditor.getValue();
        if ((value == null) || value === "") {
          value = "E = mc^2";
        }
        return "\\begin{align" + (numbered ? "" : "*") + "}\n" + value + "\n\\end{align" + (numbered ? "" : "*") + "}";
      };

      BlockMathWidget.prototype._runMathJax = function() {
        var oldLabelIds,
          _this = this;
        oldLabelIds = this.labelIds;
        this.labelIds = [];
        if (typeof MathJax !== "undefined" && MathJax !== null) {
          MathJax.InputJax.TeX.config.equationNumbers.formatNumber = function(n) {
            _this.labelIds.push(n);
            return n;
          };
        }
        return typeof MathJax !== "undefined" && MathJax !== null ? MathJax.Hub.Typeset(this.displayEl, function() {
          _this.markAsChanged();
          if ((oldLabelIds != null) && oldLabelIds.length !== _this.labelIds.length) {
            return _this.editor.refreshDocumentNumbering();
          } else if (_this.currentNumbering != null) {
            return _this._updateLabels(_this.currentNumbering);
          }
        }) : void 0;
      };

      BlockMathWidget.prototype._updateLabels = function(numbering) {
        var el, i, labelId, _i, _len, _ref, _ref1, _ref2, _ref3, _ref4, _ref5, _results;
        _ref = this.labelIds || [];
        _results = [];
        for (i = _i = 0, _len = _ref.length; _i < _len; i = ++_i) {
          labelId = _ref[i];
          el = typeof document !== "undefined" && document !== null ? document.getElementById("mjx-eqn-" + labelId) : void 0;
          if (el != null) {
            el.innerText = " (" + numbering.chapter + "." + (numbering.equation + i) + ")";
            _results.push((_ref1 = el.parentElement) != null ? (_ref2 = _ref1.parentElement) != null ? (_ref3 = _ref2.parentElement) != null ? (_ref4 = _ref3.parentElement) != null ? (_ref5 = _ref4.style) != null ? _ref5.width = el.offsetWidth + "px" : void 0 : void 0 : void 0 : void 0 : void 0);
          } else {
            _results.push(void 0);
          }
        }
        return _results;
      };

      return BlockMathWidget;

    })(Widget);
    OrchardEditorWidgets.WIDGET_TYPES["math"] = BlockMathWidget;
    return BlockMathWidget;
  });

}).call(this);

(function() {
  var __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };

  define('orchard/inline-widgets/reference',["orchard/inline-widgets/dropdown-widget", "orchard/orchard/inline-widgets", "orchard/widgets/figure", "orchard/widgets/block-math", "orchard/event", "orchard/debug"], function(DropdownWidget, OrchardEditorInlineWidgets, FigureWidget, BlockMathWidget, Events, debug) {
    var ReferenceInlineWidget, _ref;
    ReferenceInlineWidget = (function(_super) {
      __extends(ReferenceInlineWidget, _super);

      function ReferenceInlineWidget() {
        _ref = ReferenceInlineWidget.__super__.constructor.apply(this, arguments);
        return _ref;
      }

      ReferenceInlineWidget.prototype.template = "<select class=\"oe-reference-select oe-inline-select show-tick\" data-container=\"body\"></select>";

      ReferenceInlineWidget.prototype.className = "oe-reference";

      ReferenceInlineWidget.prototype.convertToTex = function(callback) {
        if (callback == null) {
          callback = function(error, tex) {};
        }
        return callback(null, "\\ref{" + (this.getAttribute("referencedAnnotationId")) + "}");
      };

      ReferenceInlineWidget.prototype._bindToEditor = function() {
        var _this = this;
        this._onLineNumberingRefreshHandler = function() {
          return _this._onLineNumberingRefresh();
        };
        return this.editor.on("lineNumbering:refresh", this._onLineNumberingRefreshHandler);
      };

      ReferenceInlineWidget.prototype._unbindFromEditor = function() {
        return this.editor.off("lineNumbering:refresh", this._onLineNumberingRefreshHandler);
      };

      ReferenceInlineWidget.prototype._bindToSelect = function() {
        var _ref1,
          _this = this;
        if ((_ref1 = this.selectEl) != null) {
          _ref1.onchange = function() {
            var annotationId;
            annotationId = _this.selectEl.options[_this.selectEl.selectedIndex].getAttribute("value");
            _this.setAttribute("referencedAnnotationId", annotationId);
            return _this._refresh();
          };
        }
        return this.on("referencedAnnotationId:update", function() {
          return _this._refresh();
        });
      };

      ReferenceInlineWidget.prototype._onLineNumberingRefresh = function() {
        return this._refresh();
      };

      ReferenceInlineWidget.prototype._refresh = function() {
        var child, createGroup, equations, figures, handler, option, options, referencedAnnotationId, sections, selectedHandler, _i, _len, _ref1,
          _this = this;
        if (this.el == null) {
          return;
        }
        options = [];
        while (child = this.selectEl.children[0]) {
          child.remove();
        }
        referencedAnnotationId = this.getAttribute("referencedAnnotationId");
        selectedHandler = null;
        option = $("<option/>");
        option.attr("value", "");
        option.attr("title", "?");
        option.text("None");
        $(this.selectEl).append(option);
        sections = [];
        figures = [];
        equations = [];
        _ref1 = this.editor.numberedHandlers || [];
        for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
          handler = _ref1[_i];
          if (handler.label != null) {
            option = $("<option/>");
            option.attr("value", handler.annotationId);
            option.attr("title", handler.numericLabel);
            option.text(handler.label);
            if (referencedAnnotationId === handler.annotationId) {
              selectedHandler = handler;
              option.attr("selected", "true");
            }
            if (handler instanceof FigureWidget) {
              figures.push(option);
            } else if (handler instanceof BlockMathWidget) {
              equations.push(option);
            } else {
              sections.push(option);
            }
          }
        }
        createGroup = function(label, options) {
          var optgroup, _j, _len1;
          if (options.length === 0) {
            return;
          }
          optgroup = $("<optgroup/>");
          optgroup.attr("label", label);
          for (_j = 0, _len1 = options.length; _j < _len1; _j++) {
            option = options[_j];
            optgroup.append(option);
          }
          return $(_this.selectEl).append(optgroup);
        };
        createGroup("Sections", sections);
        createGroup("Figures", figures);
        createGroup("Equations", equations);
        if (selectedHandler == null) {
          this.selectEl.selectedIndex = 0;
        }
        return this.refreshSelectEl();
      };

      return ReferenceInlineWidget;

    })(DropdownWidget);
    OrchardEditorInlineWidgets.INLINE_WIDGET_TYPES["reference"] = ReferenceInlineWidget;
    return ReferenceInlineWidget;
  });

}).call(this);

(function() {
  var __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };

  define('orchard/inline-widgets/citation',["orchard/inline-widgets/dropdown-widget", "orchard/orchard/inline-widgets", "orchard/debug"], function(DropdownWidget, OrchardEditorInlineWidgets, debug) {
    var CitationInlineWidget, _ref;
    CitationInlineWidget = (function(_super) {
      __extends(CitationInlineWidget, _super);

      function CitationInlineWidget() {
        _ref = CitationInlineWidget.__super__.constructor.apply(this, arguments);
        return _ref;
      }

      CitationInlineWidget.prototype.template = "<select class=\"oe-citation-select selectpicker show-tick oe-inline-select\" data-container=\"body\"></select>";

      CitationInlineWidget.prototype.className = "oe-citation";

      CitationInlineWidget.prototype.convertToTex = function(callback) {
        if (callback == null) {
          callback = function(error, tex) {};
        }
        return callback(null, "\\cite{" + (this.getAttribute("citationId")) + "}");
      };

      CitationInlineWidget.prototype._bindToEditor = function() {
        var _this = this;
        this._onBibliographyRefreshHandler = function() {
          return _this._onBibliographyRefresh();
        };
        return this.editor.on("bibliographies:update", this._onBibliographyRefreshHandler);
      };

      CitationInlineWidget.prototype._unbindFromEditor = function() {
        return this.editor.off("bibliographies:update", this._onBibliographyRefreshHandler);
      };

      CitationInlineWidget.prototype._bindToSelect = function() {
        var _ref1,
          _this = this;
        if ((_ref1 = this.selectEl) != null) {
          _ref1.onchange = function() {
            var citationId;
            citationId = _this.selectEl.options[_this.selectEl.selectedIndex].getAttribute("value");
            _this.setAttribute("citationId", citationId);
            return _this._refresh();
          };
        }
        return this.on("citationId:update", function() {
          return _this._refresh();
        });
      };

      CitationInlineWidget.prototype._onBibliographyRefresh = function() {
        return this._refresh();
      };

      CitationInlineWidget.prototype._refresh = function() {
        var bibliography, child, citationId, option, options, reference, references, _i, _j, _len, _len1, _ref1;
        if (this.el == null) {
          return;
        }
        while (child = this.selectEl.children[0]) {
          child.remove();
        }
        references = [];
        _ref1 = this.editor.bibliographies || [];
        for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
          bibliography = _ref1[_i];
          references = references.concat(bibliography.getReferencesAsArray());
        }
        debug("BIBLIOGRAPHIES", references);
        citationId = this.getAttribute("citationId");
        option = $("<option/>");
        option.attr("value", "");
        option.attr("title", "?");
        option.text("None");
        $(this.selectEl).append(option);
        options = [];
        for (_j = 0, _len1 = references.length; _j < _len1; _j++) {
          reference = references[_j];
          option = $("<option/>");
          option.attr("value", reference.key);
          option.attr("data-content", reference.html);
          option.attr("title", "(" + reference.AUTHOR + ", " + reference.YEAR + ")");
          if (citationId === reference.key) {
            option.attr("selected", "true");
          }
          $(this.selectEl).append(option);
        }
        this.refreshSelectEl();
        return this.markAsChanged();
      };

      return CitationInlineWidget;

    })(DropdownWidget);
    OrchardEditorInlineWidgets.INLINE_WIDGET_TYPES["citation"] = CitationInlineWidget;
    return CitationInlineWidget;
  });

}).call(this);

// Issues:
//  no comment handling within strings
//  no string concatenation
//  no variable values yet

// Grammar implemented here:
//  bibtex -> (string | preamble | comment | entry)*;
//  string -> '@STRING' '{' key_equals_value '}';
//  preamble -> '@PREAMBLE' '{' value '}';
//  comment -> '@COMMENT' '{' value '}';
//  entry -> '@' key '{' key ',' key_value_list '}';
//  key_value_list -> key_equals_value (',' key_equals_value)*;
//  key_equals_value -> key '=' value;
//  value -> value_quotes | value_braces | key;
//  value_quotes -> '"' .*? '"'; // not quite
//  value_braces -> '{' .*? '"'; // not quite
function BibtexParser() {
  this.pos = 0;
  this.input = "";
  
  this.entries = {};
  this.strings = {
      JAN: "January",
      FEB: "February",
      MAR: "March",      
      APR: "April",
      MAY: "May",
      JUN: "June",
      JUL: "July",
      AUG: "August",
      SEP: "September",
      OCT: "October",
      NOV: "November",
      DEC: "December"
  };
  this.currentKey = "";
  this.currentEntry = "";
  

  this.setInput = function(t) {
    this.input = t;
  }
  
  this.getEntries = function() {
      return this.entries;
  }

  this.isWhitespace = function(s) {
    return (s == ' ' || s == '\r' || s == '\t' || s == '\n');
  }

  this.match = function(s) {
    this.skipWhitespace();
    if (this.input.substring(this.pos, this.pos+s.length) == s) {
      this.pos += s.length;
    } else {
      throw "Token mismatch, expected " + s + ", found " + this.input.substring(this.pos);
    }
    this.skipWhitespace();
  }

  this.tryMatch = function(s) {
    this.skipWhitespace();
    if (this.input.substring(this.pos, this.pos+s.length) == s) {
      return true;
    } else {
      return false;
    }
    this.skipWhitespace();
  }

  this.EOF = function() {
    return this.pos >= this.input.length
  }

  this.skipWhitespace = function() {
    while (!this.EOF() && this.isWhitespace(this.input[this.pos])) {
      this.pos++;
    }
    if (!this.EOF() && this.input[this.pos] == "%") {
      while(!this.EOF() && this.input[this.pos] != "\n") {
        this.pos++;
      }
      this.skipWhitespace();
    }
  }

  this.value_braces = function() {
    var bracecount = 0;
    this.match("{");
    var start = this.pos;
    while(true) {
      if (this.input[this.pos] == '}' && this.input[this.pos-1] != '\\') {
        if (bracecount > 0) {
          bracecount--;
        } else {
          var end = this.pos;
          this.match("}");
          return this.input.substring(start, end);
        }
      } else if (this.input[this.pos] == '{') {
        bracecount++;
      } else if (this.pos == this.input.length-1) {
        throw "Unterminated value";
      }
      this.pos++;
    }
  }

  this.value_quotes = function() {
    this.match('"');
    var start = this.pos;
    while(true) {
      if (this.input[this.pos] == '"' && this.input[this.pos-1] != '\\') {
          var end = this.pos;
          this.match('"');
          return this.input.substring(start, end);
      } else if (this.pos == this.input.length-1) {
        throw "Unterminated value:" + this.input.substring(start);
      }
      this.pos++;
    }
  }
  
  this.single_value = function() {
    var start = this.pos;
    if (this.tryMatch("{")) {
      return this.value_braces();
    } else if (this.tryMatch('"')) {
      return this.value_quotes();
    } else {
      var k = this.key();
      if (this.strings[k.toUpperCase()]) {
        return this.strings[k];
      } else if (k.match("^[0-9]+$")) {
        return k;
      } else {
        throw "Value expected:" + this.input.substring(start);
      }
    }
  }
  
  this.value = function() {
    var values = [];
    values.push(this.single_value());
    while (this.tryMatch("#")) {
      this.match("#");
      values.push(this.single_value());
    }
    return values.join("");
  }

  this.key = function() {
    var start = this.pos;
    while(true) {
      if (this.pos == this.input.length) {
        throw "Runaway key";
      }
    
      if (this.input[this.pos].match("[a-zA-Z0-9_:\\./-]")) {
        this.pos++
      } else {
        return this.input.substring(start, this.pos).toUpperCase();
      }
    }
  }

  this.key_equals_value = function() {
    var key = this.key();
    if (this.tryMatch("=")) {
      this.match("=");
      var val = this.value();
      return [ key, val ];
    } else {
      throw "... = value expected, equals sign missing:" + this.input.substring(this.pos);
    }
  }

  this.key_value_list = function() {
    var kv = this.key_equals_value();
    this.entries[this.currentEntry][kv[0]] = kv[1];
    while (this.tryMatch(",")) {
      this.match(",");
      // fixes problems with commas at the end of a list
      if (this.tryMatch("}")) {
        break;
      }
      kv = this.key_equals_value();
      this.entries[this.currentEntry][kv[0]] = kv[1];
    }
  }

  this.entry_body = function() {
    this.currentEntry = this.key();
    this.entries[this.currentEntry] = new Object();    
    this.match(",");
    this.key_value_list();
  }

  this.directive = function () {
    this.match("@");
    return "@"+this.key();
  }

  this.string = function () {
    var kv = this.key_equals_value();
    this.strings[kv[0].toUpperCase()] = kv[1];
  }

  this.preamble = function() {
    this.value();
  }

  this.comment = function() {
    this.value(); // this is wrong
  }

  this.entry = function() {
    this.entry_body();
  }

  this.bibtex = function() {
    while(this.tryMatch("@")) {
      var d = this.directive().toUpperCase();
      this.match("{");
      if (d == "@STRING") {
        this.string();
      } else if (d == "@PREAMBLE") {
        this.preamble();
      } else if (d == "@COMMENT") {
        this.comment();
      } else {
        this.entry();
      }
      this.match("}");
    }
  }
}

function BibtexDisplay() {
  this.fixValue = function (value) {
    value = value.replace(/\\glqq\s?/g, "&bdquo;");
    value = value.replace(/\\grqq\s?/g, '&rdquo;');
    value = value.replace(/\\ /g, '&nbsp;');
    value = value.replace(/\\url/g, '');
    value = value.replace(/---/g, '&mdash;');
    value = value.replace(/{\\"a}/g, '&auml;');
    value = value.replace(/\{\\"o\}/g, '&ouml;');
    value = value.replace(/{\\"u}/g, '&uuml;');
    value = value.replace(/{\\"A}/g, '&Auml;');
    value = value.replace(/{\\"O}/g, '&Ouml;');
    value = value.replace(/{\\"U}/g, '&Uuml;');
    value = value.replace(/\\ss/g, '&szlig;');
    value = value.replace(/\{(.*?)\}/g, '$1');
    return value;
  }
  
  this.displayBibtex2 = function(i, o) {
    var b = new BibtexParser();
    b.setInput(i);
    b.bibtex();

    var e = b.getEntries();
    var old = o.find("*");
  
    for (var item in e) {
      var tpl = $(".bibtex_template").clone().removeClass('bibtex_template');
      tpl.addClass("unused");
      
      for (var key in e[item]) {
      
        var fields = tpl.find("." + key.toLowerCase());
        for (var i = 0; i < fields.size(); i++) {
          var f = $(fields[i]);
          f.removeClass("unused");
          var value = this.fixValue(e[item][key]);
          if (f.is("a")) {
            f.attr("href", value);
          } else {
            var currentHTML = f.html() || "";
            if (currentHTML.match("%")) {
              // "complex" template field
              f.html(currentHTML.replace("%", value));
            } else {
              // simple field
              f.html(value);
            }
          }
        }
      }
    
      var emptyFields = tpl.find("span .unused");
      emptyFields.each(function (key,f) {
        if (f.innerHTML.match("%")) {
          f.innerHTML = "";
        }
      });
    
      o.append(tpl);
      tpl.show();
    }
    
    old.remove();
  }


  this.displayBibtex = function(input, output) {
    // parse bibtex input
    var b = new BibtexParser();
    b.setInput(input);
    b.bibtex();
    
    // save old entries to remove them later
    var old = output.find("*");    

    // iterate over bibTeX entries
    var entries = b.getEntries();
    for (var entryKey in entries) {
      var entry = entries[entryKey];
      
      // find template
      var tpl = $(".bibtex_template").clone().removeClass('bibtex_template');
      
      // find all keys in the entry
      var keys = [];
      for (var key in entry) {
        keys.push(key.toUpperCase());
      }
      
      // find all ifs and check them
      var removed = false;
      do {
        // find next if
        var conds = tpl.find(".if");
        if (conds.size() == 0) {
          break;
        }
        
        // check if
        var cond = conds.first();
        cond.removeClass("if");
        var ifTrue = true;
        var classList = cond.attr('class').split(' ');
        $.each( classList, function(index, cls){
          if(keys.indexOf(cls.toUpperCase()) < 0) {
            ifTrue = false;
          }
          cond.removeClass(cls);
        });
        
        // remove false ifs
        if (!ifTrue) {
          cond.remove();
        }
      } while (true);
      
      // fill in remaining fields 
      for (var index in keys) {
        var key = keys[index];
        var value = entry[key] || "";
        tpl.find("span:not(a)." + key.toLowerCase()).html(this.fixValue(value));
        tpl.find("a." + key.toLowerCase()).attr('href', this.fixValue(value));
      }
      
      output.append(tpl);
      tpl.show();
    }
    
    // remove old entries
    old.remove();
  }

}

;
define("vendor/bibtex-parser", function(){});

(function() {
  var __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };

  define('orchard/widgets/bibliography',["orchard/orchard/widgets", "orchard/widgets/widget", "orchard/debug", "vendor/bibtex-parser"], function(OrchardEditorWidgets, Widget, debug) {
    var BibliographyTemplate, BibliographyWidget;
    BibliographyWidget = (function(_super) {
      __extends(BibliographyWidget, _super);

      BibliographyWidget.prototype.template = "<div class=\"oe-bibliography\">\n	<div class=\"oe-bibliography-header oe-non-editable\">Bibliography</div>\n	<div class=\"oe-bibliography-editor\" data-oe-binding=\"bibliography\" data-oe-richtext=\"true\" data-placeholder=\"Copy your bibtex file in here\"></div>\n	<div class=\"oe-bibliography-display\"></div>\n</div>";

      function BibliographyWidget(editor, annotationId, data) {
        var _base, _ref, _ref1;
        this.editor = editor;
        this.annotationId = annotationId;
        this.data = data;
        BibliographyWidget.__super__.constructor.call(this, this.editor, this.annotationId, this.data);
        this.formatter = new BibliographyTemplate();
        if (this.el != null) {
          this.editorEl = (_ref = this.el) != null ? _ref.getElementsByClassName("oe-bibliography-editor")[0] : void 0;
          this.displayEl = (_ref1 = this.el) != null ? _ref1.getElementsByClassName("oe-bibliography-display")[0] : void 0;
          this.bindToSelectionEvents();
          this.bindToEditorEvents();
          this.switchToRenderedView();
        }
        (_base = this.editor).bibliographies || (_base.bibliographies = []);
        this.editor.bibliographies.push(this);
        this.editor.trigger("bibliographies:update");
      }

      BibliographyWidget.prototype.destroy = function() {
        var index, _base;
        BibliographyWidget.__super__.destroy.apply(this, arguments);
        (_base = this.editor).bibliographies || (_base.bibliographies = []);
        if ((index = this.editor.bibliographies.indexOf(this)) > -1) {
          return this.editor.bibliographies.splice(index, 1);
        }
      };

      BibliographyWidget.prototype.bindToEditorEvents = function() {
        var _this = this;
        this.bibliographyEditor.on("change", function() {
          return _this.editor.trigger("bibliographies:update");
        });
        return this.bibliographyEditor.document.on("op:remote", function() {
          _this.renderBibliography();
          return _this.editor.trigger("bibliographies:update");
        });
      };

      BibliographyWidget.prototype.bindToSelectionEvents = function() {
        var _this = this;
        this.on("selected", function() {
          return _this.switchToEditorView();
        });
        return this.on("deselected", function() {
          return _this.switchToRenderedView();
        });
      };

      BibliographyWidget.prototype.getReferences = function() {
        var e, entries, entry, key, parser;
        parser = new BibtexParser();
        parser.setInput(this.bibliographyEditor.getValue());
        try {
          parser.bibtex();
          this.parserError = null;
        } catch (_error) {
          e = _error;
          this.parserError = e.message || e;
        }
        entries = parser.getEntries() || {};
        for (key in entries) {
          entry = entries[key];
          entry.key = key;
          entry.html = this.formatter.formatEntry(entry);
        }
        return entries;
      };

      BibliographyWidget.prototype.getReferencesAsArray = function() {
        var entries, entry, key, _ref;
        entries = [];
        _ref = this.getReferences();
        for (key in _ref) {
          entry = _ref[key];
          entries.push(entry);
        }
        return entries;
      };

      BibliographyWidget.prototype.convertToTex = function(options, callback) {
        if (callback == null) {
          callback = function(error, tex) {};
        }
        return callback(null, "\\begin{filecontents}{bibliography.bib}\n" + (this.bibliographyEditor.getValue()) + "\n\\end{filecontents}\n\n\\bibliographystyle{plain}\n\\bibliography{bibliography}");
      };

      BibliographyWidget.prototype.switchToEditorView = function() {
        var _ref, _ref1;
        if ((_ref = this.displayEl) != null) {
          _ref.setAttribute("style", "display: none");
        }
        if ((_ref1 = this.editorEl) != null) {
          _ref1.setAttribute("style", "");
        }
        return this.markAsChanged();
      };

      BibliographyWidget.prototype.switchToRenderedView = function() {
        var _ref, _ref1;
        if ((_ref = this.displayEl) != null) {
          _ref.setAttribute("style", "");
        }
        if ((_ref1 = this.editorEl) != null) {
          _ref1.setAttribute("style", "display: none");
        }
        this.renderBibliography();
        return this.markAsChanged();
      };

      BibliographyWidget.prototype.renderBibliography = function() {
        var entry, key, output, _ref;
        if (this.displayEl != null) {
          output = "";
          _ref = this.getReferences();
          for (key in _ref) {
            entry = _ref[key];
            output += "<div class=\"oe-bibliography-entry-wrapper\">" + entry.html + "</div>";
          }
          if (output === "") {
            output = "<div class=\"oe-bibliography-no-entries\">Click here to add a bibtex file</div>";
          }
          if (this.parserError != null) {
            output += "<div class=\"oe-bibliography-error\">Parse error: " + this.parserError + "</div>";
          }
          return this.displayEl.innerHTML = output;
        }
      };

      return BibliographyWidget;

    })(Widget);
    BibliographyTemplate = (function() {
      function BibliographyTemplate() {}

      BibliographyTemplate.prototype.formatEntry = function(entry) {
        return "<div class=\"oe-bibliography-entry\">\n	<span class=\"oe-bibliography-year\">" + (this.s(entry.YEAR)) + ",</span>\n	<span class=\"oe-bibliography-author\">" + (this.s(entry.AUTHOR)) + "</span>\n	<span class=\"oe-bibliography-title\">" + (this.s(entry.TITLE)) + "</span>\n</div>";
      };

      BibliographyTemplate.prototype.s = function(value) {
        if (value == null) {
          value = "";
        }
        value = value.replace(/</g, "&lt;");
        value = value.replace(/>/g, "&gt;");
        value = value.replace(/\\glqq\s?/g, "&bdquo;");
        value = value.replace(/\\grqq\s?/g, '&rdquo;');
        value = value.replace(/\\ /g, '&nbsp;');
        value = value.replace(/\\url/g, '');
        value = value.replace(/---/g, '&mdash;');
        value = value.replace(/{\\"a}/g, '&auml;');
        value = value.replace(/\{\\"o\}/g, '&ouml;');
        value = value.replace(/{\\"u}/g, '&uuml;');
        value = value.replace(/{\\"A}/g, '&Auml;');
        value = value.replace(/{\\"O}/g, '&Ouml;');
        value = value.replace(/{\\"U}/g, '&Uuml;');
        value = value.replace(/\\ss/g, '&szlig;');
        value = value.replace(/\{(.*?)\}/g, '$1');
        return value;
      };

      return BibliographyTemplate;

    })();
    OrchardEditorWidgets.WIDGET_TYPES["bibliography"] = BibliographyWidget;
    return BibliographyWidget;
  });

}).call(this);

(function() {
  var __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };

  define('orchard/widgets/title',["orchard/orchard/widgets", "orchard/widgets/widget", "orchard/debug"], function(OrchardEditorWidgets, Widget, debug) {
    var TitleWidget;
    TitleWidget = (function(_super) {
      __extends(TitleWidget, _super);

      TitleWidget.prototype.template = "<div class=\"oe-title\">\n	<div class=\"oe-title-title\" data-oe-binding=\"title\" data-oe-richtext=\"true\" data-placeholder=\"Title\"></div>\n	<div class=\"oe-title-author\" data-oe-binding=\"author\" data-oe-richtext=\"true\" data-placeholder=\"Author(s)\"></div>\n	<div class=\"oe-title-abstract\">\n		<div class=\"oe-title-abstract-label\">Abstract</div>\n		<div class=\"oe-title-abstract-content\" data-oe-binding=\"abstract\" data-oe-richtext=\"true\" data-placeholder=\"A short summary of your article\"></div>\n	</div>\n</div>";

      function TitleWidget(editor, annotationId, data) {
        this.editor = editor;
        this.annotationId = annotationId;
        this.data = data;
        TitleWidget.__super__.constructor.call(this, this.editor, this.annotationId, this.data);
      }

      TitleWidget.prototype.convertToTex = function(options, callback) {
        if (options == null) {
          options = {};
        }
        if (callback == null) {
          callback = function(error, tex) {};
        }
        return callback(null, "\\title{" + (this.titleEditor.getValue()) + "}\n\\author{" + (this.authorEditor.getValue()) + "}\n\n\\maketitle\n\n\\begin{abstract}\n" + (this.abstractEditor.getValue()) + "\n\\end{abstract}");
      };

      return TitleWidget;

    })(Widget);
    OrchardEditorWidgets.WIDGET_TYPES["title"] = TitleWidget;
    return TitleWidget;
  });

}).call(this);

(function() {
  var __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };

  define('orchard/orchard',["orchard/base", "orchard/event", "orchard/document", "orchard/codemirror", "orchard/latex-visualisation", "orchard/orchard/widgets", "orchard/orchard/line-annotations", "orchard/orchard/inline-widgets", "orchard/undo", "orchard/copyandpaste", "orchard/ui", "orchard/debug", "orchard/inline-widgets/reference", "orchard/inline-widgets/citation", "orchard/widgets/figure", "orchard/widgets/block-math", "orchard/widgets/bibliography", "orchard/widgets/title"], function(Base, Event, Document, CodeMirror, LatexVisualisation, OrchardEditorWidgets, OrchardEditorLineAnnotations, OrchardEditorInlineWidgets, OrchardUndoManager, OrchardCopyAndPasteManager, OrchardUI, debug) {
    var OrchardEditor;
    return OrchardEditor = (function(_super) {
      __extends(OrchardEditor, _super);

      OrchardEditor.include(Event);

      OrchardEditor.UI = OrchardUI;

      OrchardEditor.convertImageIdToUrl = function(imageId, callback) {
        if (callback == null) {
          callback = function(error, url) {};
        }
        return callback(null, "http://www.sharelatex.com/img/logo/lion-128.png");
      };

      function OrchardEditor(element, subdoc, options, parent) {
        var _base, _base1, _ref, _ref1,
          _this = this;
        this.options = options != null ? options : {};
        this.parent = parent;
        OrchardEditor.__super__.constructor.apply(this, arguments);
        (_base = this.options).headless || (_base.headless = (_ref = this.parent) != null ? _ref.options.headless : void 0);
        (_base1 = this.options).readonly || (_base1.readonly = (_ref1 = this.parent) != null ? _ref1.options.readonly : void 0);
        if (typeof MathJax !== "undefined" && MathJax !== null) {
          MathJax.Hub.Config({
            "HTML-CSS": {
              availableFonts: ["TeX"]
            },
            TeX: {
              equationNumbers: {
                autoNumber: "AMS"
              },
              useLabelIDs: false
            },
            tex2jax: {
              inlineMath: [['$', '$'], ["\\(", "\\)"]],
              displayMath: [['$$', '$$'], ["\\[", "\\]"]],
              processEscapes: true
            }
          });
        }
        if (element != null) {
          element.innerText = "";
        }
        this.document = new Document(subdoc);
        this.bindToDocumentEvents();
        if (!this.options.headless) {
          this.codemirror = new CodeMirror(element, {
            readonly: this.options.readonly
          });
          this.bindToCodeMirrorEvents();
        }
        this.undoManager = new OrchardUndoManager(this);
        this.copyAndPasteManager = new OrchardCopyAndPasteManager(this);
        this.document.initialize(function(error) {
          if (!_this.options.simple) {
            _this.widgets = new OrchardEditorWidgets(_this);
            _this.inlineWidgets = new OrchardEditorInlineWidgets(_this);
            _this.lineAnnotations = new OrchardEditorLineAnnotations(_this);
          }
          _this.syncDocumentToCodemirror();
          return _this.latex = new LatexVisualisation(_this);
        });
      }

      OrchardEditor.prototype.detach = function() {
        this.document.detach();
        return this.codemirror.detach();
      };

      OrchardEditor.prototype.bindToCodeMirrorEvents = function() {
        var _this = this;
        this.codemirror.on("change", function(change) {
          return _this.onCodeMirrorChange(change);
        });
        this.codemirror.on("annotation:new", function(annotation) {
          return _this.onNewCodeMirrorAnnotation(annotation);
        });
        this.codemirror.on("annotation:remove", function(annotation) {
          return _this.onRemoveCodeMirrorAnnotation(annotation);
        });
        this.codemirror.on("selection:change", function(newSelection) {
          return _this.onCodeMirrorSelectionChange(newSelection);
        });
        this.codemirror.on("selection:hitSide", function(direction) {
          return _this.onCodeMirrorSelectionHitSide(direction);
        });
        this.codemirror.on("focus", function() {
          return _this.trigger("focus");
        });
        this.codemirror.on("blur", function() {
          return _this.trigger("blur");
        });
        this.codemirror.on("keydown", function() {
          return _this.keydown = true;
        });
        this.codemirror.on("keyup", function() {
          return delete _this.keydown;
        });
        this.codemirror.on("undo", function() {
          return _this.trigger("undo");
        });
        this.codemirror.on("redo", function() {
          return _this.trigger("redo");
        });
        this.codemirror.on("copy", function() {
          return _this.trigger("copy");
        });
        return this.codemirror.on("paste", function(e) {
          return _this.trigger("paste", e);
        });
      };

      OrchardEditor.prototype.onCodeMirrorSelectionChange = function(newSelection) {
        this.trigger("selection:change", newSelection, this.oldSelection);
        return this.oldSelection = newSelection;
      };

      OrchardEditor.prototype.onCodeMirrorSelectionHitSide = function(direction) {
        return this.trigger("selection:hitSide", direction);
      };

      OrchardEditor.prototype.onCodeMirrorChange = function(change) {
        if (!this.ignoreCodemirrorChanges) {
          this.startOperation();
          this._triggerCodeMirrorAnnotationChangeEvents(change);
          this.document.applyChange(change);
          this.endOperation();
          return this.trigger("change", change);
        }
      };

      OrchardEditor.prototype.onNewCodeMirrorAnnotation = function(annotation) {
        debug("editor", "on new code mirror annotation", annotation);
        return this.trigger("codemirror:annotation:new", annotation);
      };

      OrchardEditor.prototype.onRemoveCodeMirrorAnnotation = function(annotation) {
        debug("editor", "on remove code mirror annotation", annotation);
        return this.trigger("codemirror:annotation:remove", annotation);
      };

      OrchardEditor.prototype.bindToDocumentEvents = function() {
        var _this = this;
        this.document.on("change", function(change) {
          return _this.onDocumentChange(change);
        });
        this.document.on("line:insert", function(change) {
          return _this.onDocumentLineInsert(change);
        });
        this.document.on("line:remove", function(change) {
          return _this.onDocumentLineRemove(change);
        });
        this.document.on("text:insert", function(change) {
          return _this.onDocumentTextInsert(change);
        });
        this.document.on("text:remove", function(change) {
          return _this.onDocumentTextRemove(change);
        });
        this.document.on("annotation:new", function(annotation, lineNo) {
          return _this.onNewDocumentAnnotation(annotation, lineNo);
        });
        this.document.on("annotation:update", function(annotation, lineNo) {
          return _this.onUpdateDocumentAnnotation(annotation, lineNo);
        });
        return this.document.on("annotation:remove", function(annotation, lineNo) {
          return _this.onRemoveDocumentAnnotation(annotation, lineNo);
        });
      };

      OrchardEditor.prototype.ignoringCodemirrorChanges = function(callback) {
        if (callback == null) {
          callback = function() {};
        }
        this.ignoreCodemirrorChanges = true;
        callback();
        return delete this.ignoreCodemirrorChanges;
      };

      OrchardEditor.prototype.onDocumentChange = function(change) {
        return this.trigger("change", change);
      };

      OrchardEditor.prototype.onDocumentLineInsert = function(change) {
        var _this = this;
        this.ignoringCodemirrorChanges(function() {
          return _this.codemirror.insertLine(change.line, change.text);
        });
        return this.trigger("document:lines:change");
      };

      OrchardEditor.prototype.onDocumentLineRemove = function(change) {
        var _this = this;
        this.ignoringCodemirrorChanges(function() {
          return _this.codemirror.deleteLine(change.line, change.text);
        });
        return this.trigger("document:lines:change");
      };

      OrchardEditor.prototype.onDocumentTextInsert = function(change) {
        var _this = this;
        this.ignoringCodemirrorChanges(function() {
          return _this.codemirror.insertText(change.line, change.ch, change.text);
        });
        return this.trigger("document:line:annotations:change", change.line);
      };

      OrchardEditor.prototype.onDocumentTextRemove = function(change) {
        var _this = this;
        this.ignoringCodemirrorChanges(function() {
          return _this.codemirror.deleteText(change.line, change.ch, change.text.length);
        });
        return this.trigger("document:line:annotations:change", change.line);
      };

      OrchardEditor.prototype.onNewDocumentAnnotation = function(annotation, lineNo) {
        return this.trigger("document:annotation:new", annotation, lineNo);
      };

      OrchardEditor.prototype.onUpdateDocumentAnnotation = function(annotation, lineNo) {
        return this.trigger("document:annotation:update", annotation, lineNo);
      };

      OrchardEditor.prototype.onRemoveDocumentAnnotation = function(annotation, lineNo) {
        return this.trigger("document:annotation:remove", annotation, lineNo);
      };

      OrchardEditor.prototype.applyRawOp = function(op) {
        return this.document.applyRawOp(op);
      };

      OrchardEditor.prototype.revertRawOp = function(op) {
        return this.document.revertRawOp(op);
      };

      OrchardEditor.prototype.getVisualMarkersOnLine = function(line) {
        var _ref;
        return (_ref = this.codemirror) != null ? _ref.getVisualMarkersOnLine(line) : void 0;
      };

      OrchardEditor.prototype.addVisualMarker = function(from, to, className, options) {
        var _ref;
        if (options == null) {
          options = {};
        }
        return (_ref = this.codemirror) != null ? _ref.addVisualMarker(from, to, className, options) : void 0;
      };

      OrchardEditor.prototype.refresh = function() {
        var _ref;
        return (_ref = this.codemirror) != null ? _ref.refresh() : void 0;
      };

      OrchardEditor.prototype.getValue = function() {
        return this.document.getValue();
      };

      OrchardEditor.prototype.getLineText = function(line) {
        return this.document.getLine(line);
      };

      OrchardEditor.prototype.getRange = function(from, to) {
        return this.codemirror.getRange(from, to);
      };

      OrchardEditor.prototype.replaceRange = function(string, from, to) {
        return this.codemirror.replaceRange(string, from, to);
      };

      OrchardEditor.prototype.getSelection = function() {
        return this.codemirror.getSelection();
      };

      OrchardEditor.prototype.getSelectedText = function() {
        return this.codemirror.getSelectedText();
      };

      OrchardEditor.prototype.replaceSelection = function(text, collapse) {
        return this.codemirror.replaceSelection(text);
      };

      OrchardEditor.prototype.setCursor = function(position) {
        return this.codemirror.setCursor(position);
      };

      OrchardEditor.prototype.focus = function() {
        return this.codemirror.focus();
      };

      OrchardEditor.prototype.getLineCount = function() {
        return this.document.getLineCount();
      };

      OrchardEditor.prototype.syncDocumentToCodemirror = function() {
        var annotation, lineNo, _i, _len, _ref, _ref1, _ref2;
        this.startOperation();
        if ((_ref = this.codemirror) != null) {
          _ref.setValue(this.document.getValue());
        }
        _ref1 = this.document.getAnnotations();
        for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
          _ref2 = _ref1[_i], annotation = _ref2[0], lineNo = _ref2[1];
          this.trigger("document:annotation:sync", annotation, lineNo);
        }
        return this.endOperation();
      };

      OrchardEditor.prototype._triggerCodeMirrorAnnotationChangeEvents = function(change) {
        var fromLine, insertedLines, lineNo, toLine, _i;
        fromLine = change.from.line;
        insertedLines = change.inserted.length - 1;
        toLine = fromLine + insertedLines;
        for (lineNo = _i = fromLine; fromLine <= toLine ? _i <= toLine : _i >= toLine; lineNo = fromLine <= toLine ? ++_i : --_i) {
          this.trigger("codemirror:line:annotations:change", lineNo);
        }
        if (change.inserted.length > 1 || change.deleted.length > 1) {
          return this.trigger("codemirror:lines:change");
        }
      };

      OrchardEditor.prototype.startOperation = function() {
        var _this = this;
        this.operationStack || (this.operationStack = 0);
        if (this.operationStack === 0) {
          this.document.startBufferingOps();
          this.currentOperation = {};
          this._refreshDocumentNumbering = this.refreshDocumentNumbering;
          this.refreshDocumentNumbering = function() {
            return _this.currentOperation.refreshDocumentNumbering = true;
          };
        }
        return this.operationStack++;
      };

      OrchardEditor.prototype.endOperation = function() {
        this.operationStack--;
        if (this.operationStack === 0) {
          this.document.submitBufferedOps();
          this.refreshDocumentNumbering = this._refreshDocumentNumbering;
          if (this.currentOperation.refreshDocumentNumbering) {
            return typeof MathJax !== "undefined" && MathJax !== null ? MathJax.Hub.Queue(["refreshDocumentNumbering", this]) : void 0;
          }
        }
      };

      OrchardEditor.prototype.refreshDocumentNumbering = function() {
        var currentLineNo, currentNumbering, duplicateLineNumberingData, handler, lineAnnotations, nextHandler, previousLineNo, widgets,
          _this = this;
        currentNumbering = {
          chapter: 0,
          section: 0,
          subsection: 0,
          equation: 0,
          figure: 0
        };
        debug("WARNING", "FULL DOCUMENT SCAN FOR DOCUMENT NUMBERING");
        duplicateLineNumberingData = function(options) {
          var data, from, i, to, _i, _results;
          from = options.from, to = options.to;
          data = _this.lineNumberingData.pop();
          _results = [];
          for (i = _i = from; from <= to ? _i <= to : _i >= to; i = from <= to ? ++_i : --_i) {
            _results.push(_this.lineNumberingData.push(data));
          }
          return _results;
        };
        this.numberedHandlers = [];
        this.lineNumberingData = [currentNumbering];
        previousLineNo = 0;
        if ((this.lineAnnotations != null) && (this.widgets != null)) {
          lineAnnotations = this.lineAnnotations.getLineAnnotationsOrderedByLine();
          widgets = this.widgets.getWidgetsOrderedByLine();
          nextHandler = function() {
            if (lineAnnotations.length === 0 && widgets.length === 0) {
              return null;
            }
            if (widgets.length === 0) {
              return lineAnnotations.shift();
            } else if (lineAnnotations.length === 0) {
              return widgets.shift();
            } else if (lineAnnotations[0].getLineNumber() < widgets[0].getLineNumber()) {
              return lineAnnotations.shift();
            } else {
              return widgets.shift();
            }
          };
          while ((handler = nextHandler())) {
            if (handler.updateDocumentNumbering != null) {
              currentLineNo = handler.getLineNumber();
              if (currentLineNo > previousLineNo) {
                duplicateLineNumberingData({
                  from: previousLineNo,
                  to: currentLineNo
                });
              }
              previousLineNo = currentLineNo;
              currentNumbering = {
                chapter: currentNumbering.chapter,
                section: currentNumbering.section,
                subsection: currentNumbering.subsection,
                equation: currentNumbering.equation,
                figure: currentNumbering.figure
              };
              currentNumbering = handler.updateDocumentNumbering(currentNumbering);
              this.lineNumberingData[currentLineNo] = currentNumbering;
              this.numberedHandlers.push(handler);
            }
          }
        }
        duplicateLineNumberingData({
          from: previousLineNo,
          to: this.getLineCount() - 1
        });
        this.trigger("lineNumbering:refresh");
        return this.lineNumberingData;
      };

      OrchardEditor.prototype.getNumberingOnLine = function(line) {
        this.lineNumberingData || (this.lineNumberingData = []);
        return this.lineNumberingData[line];
      };

      OrchardEditor.prototype.convertToTex = function(options, callback) {
        var content, jobs, lineNo, runNextJob, text, _fn, _i, _len, _ref,
          _this = this;
        if (callback == null) {
          callback = function(error, tex) {};
        }
        content = "";
        jobs = [];
        _ref = this.document.getLines();
        _fn = function(text, lineNo) {
          var annotation, annotations, widget, _j, _k, _l, _len1, _len2, _len3, _ref1, _ref2, _ref3, _ref4, _ref5, _ref6;
          _ref2 = ((_ref1 = _this.widgets) != null ? _ref1.getWidgetsOnLine(lineNo) : void 0) || [];
          for (_j = 0, _len1 = _ref2.length; _j < _len1; _j++) {
            widget = _ref2[_j];
            if (widget.convertToTex != null) {
              (function(widget) {
                return jobs.push(function(callback) {
                  if (callback == null) {
                    callback = function() {};
                  }
                  return widget.convertToTex(options, function(error, tex) {
                    if (error != null) {
                      return callback(error);
                    }
                    content += tex;
                    return callback();
                  });
                });
              })(widget);
            }
          }
          annotations = [];
          _ref4 = ((_ref3 = _this.inlineWidgets) != null ? _ref3.getInlineWidgetsOnLine(lineNo) : void 0) || [];
          for (_k = 0, _len2 = _ref4.length; _k < _len2; _k++) {
            widget = _ref4[_k];
            if (widget.convertToTex != null) {
              (function(widget) {
                return jobs.push(function(callback) {
                  if (callback == null) {
                    callback = function() {};
                  }
                  return widget.convertToTex(function(error, tex) {
                    if (error != null) {
                      return callback(error);
                    }
                    annotations.push({
                      ch: _this.inlineWidgets.getInlineWidgetPosition(widget.annotationId),
                      text: tex
                    });
                    return callback();
                  });
                });
              })(widget);
            }
          }
          jobs.push(function(callback) {
            var annotation, _l, _len3;
            if (callback == null) {
              callback = function() {};
            }
            annotations = annotations.sort(function(a, b) {
              if (a.ch > b.ch) {
                return -1;
              } else if (a.ch === b.ch) {
                return 0;
              } else {
                return 1;
              }
            });
            for (_l = 0, _len3 = annotations.length; _l < _len3; _l++) {
              annotation = annotations[_l];
              text = text.slice(0, annotation.ch) + annotation.text + text.slice(annotation.ch + 1);
            }
            return callback();
          });
          _ref6 = ((_ref5 = _this.lineAnnotations) != null ? _ref5.getLineAnnotationsOnLine(lineNo) : void 0) || [];
          for (_l = 0, _len3 = _ref6.length; _l < _len3; _l++) {
            annotation = _ref6[_l];
            if (annotation.convertToTex != null) {
              (function(annotation) {
                return jobs.push(function(callback) {
                  if (callback == null) {
                    callback = function() {};
                  }
                  text = annotation.convertToTex(text);
                  return callback();
                });
              })(annotation);
            }
          }
          return jobs.push(function(callback) {
            if (callback == null) {
              callback = function() {};
            }
            content += text + "\n";
            return callback();
          });
        };
        for (lineNo = _i = 0, _len = _ref.length; _i < _len; lineNo = ++_i) {
          text = _ref[lineNo];
          _fn(text, lineNo);
        }
        return (runNextJob = function() {
          var job;
          job = jobs.shift();
          if (job == null) {
            return callback(null, content);
          } else {
            return job(function(error) {
              if (error != null) {
                return callback(error);
              }
              return runNextJob();
            });
          }
        })();
      };

      OrchardEditor.prototype.insertText = function(line, ch, text) {
        this.ignoreCodemirrorChanges = true;
        this.codemirror.insertText(line, ch, text);
        this.document.insertText(line, ch, text);
        return delete this.ignoreCodemirrorChanges;
      };

      return OrchardEditor;

    })(Base);
  });

}).call(this);

// CodeMirror version 3.18
//
// CodeMirror is the only global var we claim
window.CodeMirror = (function() {
  

  // BROWSER SNIFFING

  // Crude, but necessary to handle a number of hard-to-feature-detect
  // bugs and behavior differences.
  var gecko = /gecko\/\d/i.test(navigator.userAgent);
  var ie = /MSIE \d/.test(navigator.userAgent);
  var ie_lt8 = ie && (document.documentMode == null || document.documentMode < 8);
  var ie_lt9 = ie && (document.documentMode == null || document.documentMode < 9);
  var webkit = /WebKit\//.test(navigator.userAgent);
  var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent);
  var chrome = /Chrome\//.test(navigator.userAgent);
  var opera = /Opera\//.test(navigator.userAgent);
  var safari = /Apple Computer/.test(navigator.vendor);
  var khtml = /KHTML\//.test(navigator.userAgent);
  var mac_geLion = /Mac OS X 1\d\D([7-9]|\d\d)\D/.test(navigator.userAgent);
  var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(navigator.userAgent);
  var phantom = /PhantomJS/.test(navigator.userAgent);

  var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent);
  // This is woefully incomplete. Suggestions for alternative methods welcome.
  var mobile = ios || /Android|webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(navigator.userAgent);
  var mac = ios || /Mac/.test(navigator.platform);
  var windows = /win/i.test(navigator.platform);

  var opera_version = opera && navigator.userAgent.match(/Version\/(\d*\.\d*)/);
  if (opera_version) opera_version = Number(opera_version[1]);
  if (opera_version && opera_version >= 15) { opera = false; webkit = true; }
  // Some browsers use the wrong event properties to signal cmd/ctrl on OS X
  var flipCtrlCmd = mac && (qtwebkit || opera && (opera_version == null || opera_version < 12.11));
  var captureMiddleClick = gecko || (ie && !ie_lt9);

  // Optimize some code when these features are not used
  var sawReadOnlySpans = false, sawCollapsedSpans = false;

  // CONSTRUCTOR

  function CodeMirror(place, options) {
    if (!(this instanceof CodeMirror)) return new CodeMirror(place, options);

    this.options = options = options || {};
    // Determine effective options based on given values and defaults.
    for (var opt in defaults) if (!options.hasOwnProperty(opt) && defaults.hasOwnProperty(opt))
      options[opt] = defaults[opt];
    setGuttersForLineNumbers(options);

    var docStart = typeof options.value == "string" ? 0 : options.value.first;
    var display = this.display = makeDisplay(place, docStart);
    display.wrapper.CodeMirror = this;
    updateGutters(this);
    if (options.autofocus && !mobile) focusInput(this);

    this.state = {keyMaps: [],
                  overlays: [],
                  modeGen: 0,
                  overwrite: false, focused: false,
                  suppressEdits: false, pasteIncoming: false,
                  draggingText: false,
                  highlight: new Delayed()};

    themeChanged(this);
    if (options.lineWrapping)
      this.display.wrapper.className += " CodeMirror-wrap";

    var doc = options.value;
    if (typeof doc == "string") doc = new Doc(options.value, options.mode);
    operation(this, attachDoc)(this, doc);

    // Override magic textarea content restore that IE sometimes does
    // on our hidden textarea on reload
    if (ie) setTimeout(bind(resetInput, this, true), 20);

    registerEventHandlers(this);
    // IE throws unspecified error in certain cases, when
    // trying to access activeElement before onload
    var hasFocus; try { hasFocus = (document.activeElement == display.input); } catch(e) { }
    if (hasFocus || (options.autofocus && !mobile)) setTimeout(bind(onFocus, this), 20);
    else onBlur(this);

    operation(this, function() {
      for (var opt in optionHandlers)
        if (optionHandlers.propertyIsEnumerable(opt))
          optionHandlers[opt](this, options[opt], Init);
      for (var i = 0; i < initHooks.length; ++i) initHooks[i](this);
    })();
  }

  // DISPLAY CONSTRUCTOR

  function makeDisplay(place, docStart) {
    var d = {};

    var input = d.input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none; font-size: 4px;");
    if (webkit) input.style.width = "1000px";
    else input.setAttribute("wrap", "off");
    // if border: 0; -- iOS fails to open keyboard (issue #1287)
    if (ios) input.style.border = "1px solid black";
    input.setAttribute("autocorrect", "off"); input.setAttribute("autocapitalize", "off"); input.setAttribute("spellcheck", "false");

    // Wraps and hides input textarea
    d.inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
    // The actual fake scrollbars.
    d.scrollbarH = elt("div", [elt("div", null, null, "height: 1px")], "CodeMirror-hscrollbar");
    d.scrollbarV = elt("div", [elt("div", null, null, "width: 1px")], "CodeMirror-vscrollbar");
    d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler");
    d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler");
    // DIVs containing the selection and the actual code
    d.lineDiv = elt("div", null, "CodeMirror-code");
    d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1");
    // Blinky cursor, and element used to ensure cursor fits at the end of a line
    d.cursor = elt("div", "\u00a0", "CodeMirror-cursor");
    // Secondary cursor, shown when on a 'jump' in bi-directional text
    d.otherCursor = elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor");
    // Used to measure text size
    d.measure = elt("div", null, "CodeMirror-measure");
    // Wraps everything that needs to exist inside the vertically-padded coordinate system
    d.lineSpace = elt("div", [d.measure, d.selectionDiv, d.lineDiv, d.cursor, d.otherCursor],
                         null, "position: relative; outline: none");
    // Moved around its parent to cover visible view
    d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative");
    // Set to the height of the text, causes scrolling
    d.sizer = elt("div", [d.mover], "CodeMirror-sizer");
    // D is needed because behavior of elts with overflow: auto and padding is inconsistent across browsers
    d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerCutOff + "px; width: 1px;");
    // Will contain the gutters, if any
    d.gutters = elt("div", null, "CodeMirror-gutters");
    d.lineGutter = null;
    // Provides scrolling
    d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll");
    d.scroller.setAttribute("tabIndex", "-1");
    // The element in which the editor lives.
    d.wrapper = elt("div", [d.inputDiv, d.scrollbarH, d.scrollbarV,
                            d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror");
    // Work around IE7 z-index bug
    if (ie_lt8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }
    if (place.appendChild) place.appendChild(d.wrapper); else place(d.wrapper);

    // Needed to hide big blue blinking cursor on Mobile Safari
    if (ios) input.style.width = "0px";
    if (!webkit) d.scroller.draggable = true;
    // Needed to handle Tab key in KHTML
    if (khtml) { d.inputDiv.style.height = "1px"; d.inputDiv.style.position = "absolute"; }
    // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).
    else if (ie_lt8) d.scrollbarH.style.minWidth = d.scrollbarV.style.minWidth = "18px";

    // Current visible range (may be bigger than the view window).
    d.viewOffset = d.lastSizeC = 0;
    d.showingFrom = d.showingTo = docStart;

    // Used to only resize the line number gutter when necessary (when
    // the amount of lines crosses a boundary that makes its width change)
    d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null;
    // See readInput and resetInput
    d.prevInput = "";
    // Set to true when a non-horizontal-scrolling widget is added. As
    // an optimization, widget aligning is skipped when d is false.
    d.alignWidgets = false;
    // Flag that indicates whether we currently expect input to appear
    // (after some event like 'keypress' or 'input') and are polling
    // intensively.
    d.pollingFast = false;
    // Self-resetting timeout for the poller
    d.poll = new Delayed();

    d.cachedCharWidth = d.cachedTextHeight = null;
    d.measureLineCache = [];
    d.measureLineCachePos = 0;

    // Tracks when resetInput has punted to just putting a short
    // string instead of the (large) selection.
    d.inaccurateSelection = false;

    // Tracks the maximum line length so that the horizontal scrollbar
    // can be kept static when scrolling.
    d.maxLine = null;
    d.maxLineLength = 0;
    d.maxLineChanged = false;

    // Used for measuring wheel scrolling granularity
    d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null;

    return d;
  }

  // STATE UPDATES

  // Used to get the editor into a consistent state again when options change.

  function loadMode(cm) {
    cm.doc.mode = CodeMirror.getMode(cm.options, cm.doc.modeOption);
    cm.doc.iter(function(line) {
      if (line.stateAfter) line.stateAfter = null;
      if (line.styles) line.styles = null;
    });
    cm.doc.frontier = cm.doc.first;
    startWorker(cm, 100);
    cm.state.modeGen++;
    if (cm.curOp) regChange(cm);
  }

  function wrappingChanged(cm) {
    if (cm.options.lineWrapping) {
      cm.display.wrapper.className += " CodeMirror-wrap";
      cm.display.sizer.style.minWidth = "";
    } else {
      cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-wrap", "");
      computeMaxLength(cm);
    }
    estimateLineHeights(cm);
    regChange(cm);
    clearCaches(cm);
    setTimeout(function(){updateScrollbars(cm);}, 100);
  }

  function estimateHeight(cm) {
    var th = textHeight(cm.display), wrapping = cm.options.lineWrapping;
    var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3);
    return function(line) {
      if (lineIsHidden(cm.doc, line))
        return 0;
      else if (wrapping)
        return (Math.ceil(line.text.length / perLine) || 1) * th;
      else
        return th;
    };
  }

  function estimateLineHeights(cm) {
    var doc = cm.doc, est = estimateHeight(cm);
    doc.iter(function(line) {
      var estHeight = est(line);
      if (estHeight != line.height) updateLineHeight(line, estHeight);
    });
  }

  function keyMapChanged(cm) {
    var map = keyMap[cm.options.keyMap], style = map.style;
    cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-keymap-\S+/g, "") +
      (style ? " cm-keymap-" + style : "");
    cm.state.disableInput = map.disableInput;
  }

  function themeChanged(cm) {
    cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") +
      cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-");
    clearCaches(cm);
  }

  function guttersChanged(cm) {
    updateGutters(cm);
    regChange(cm);
    setTimeout(function(){alignHorizontally(cm);}, 20);
  }

  function updateGutters(cm) {
    var gutters = cm.display.gutters, specs = cm.options.gutters;
    removeChildren(gutters);
    for (var i = 0; i < specs.length; ++i) {
      var gutterClass = specs[i];
      var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass));
      if (gutterClass == "CodeMirror-linenumbers") {
        cm.display.lineGutter = gElt;
        gElt.style.width = (cm.display.lineNumWidth || 1) + "px";
      }
    }
    gutters.style.display = i ? "" : "none";
  }

  function lineLength(doc, line) {
    if (line.height == 0) return 0;
    var len = line.text.length, merged, cur = line;
    while (merged = collapsedSpanAtStart(cur)) {
      var found = merged.find();
      cur = getLine(doc, found.from.line);
      len += found.from.ch - found.to.ch;
    }
    cur = line;
    while (merged = collapsedSpanAtEnd(cur)) {
      var found = merged.find();
      len -= cur.text.length - found.from.ch;
      cur = getLine(doc, found.to.line);
      len += cur.text.length - found.to.ch;
    }
    return len;
  }

  function computeMaxLength(cm) {
    var d = cm.display, doc = cm.doc;
    d.maxLine = getLine(doc, doc.first);
    d.maxLineLength = lineLength(doc, d.maxLine);
    d.maxLineChanged = true;
    doc.iter(function(line) {
      var len = lineLength(doc, line);
      if (len > d.maxLineLength) {
        d.maxLineLength = len;
        d.maxLine = line;
      }
    });
  }

  // Make sure the gutters options contains the element
  // "CodeMirror-linenumbers" when the lineNumbers option is true.
  function setGuttersForLineNumbers(options) {
    var found = indexOf(options.gutters, "CodeMirror-linenumbers");
    if (found == -1 && options.lineNumbers) {
      options.gutters = options.gutters.concat(["CodeMirror-linenumbers"]);
    } else if (found > -1 && !options.lineNumbers) {
      options.gutters = options.gutters.slice(0);
      options.gutters.splice(found, 1);
    }
  }

  // SCROLLBARS

  // Re-synchronize the fake scrollbars with the actual size of the
  // content. Optionally force a scrollTop.
  function updateScrollbars(cm) {
    var d = cm.display, docHeight = cm.doc.height;
    var totalHeight = docHeight + paddingVert(d);
    d.sizer.style.minHeight = d.heightForcer.style.top = totalHeight + "px";
    d.gutters.style.height = Math.max(totalHeight, d.scroller.clientHeight - scrollerCutOff) + "px";
    var scrollHeight = Math.max(totalHeight, d.scroller.scrollHeight);
    var needsH = d.scroller.scrollWidth > (d.scroller.clientWidth + 1);
    var needsV = scrollHeight > (d.scroller.clientHeight + 1);
    if (needsV) {
      d.scrollbarV.style.display = "block";
      d.scrollbarV.style.bottom = needsH ? scrollbarWidth(d.measure) + "px" : "0";
      d.scrollbarV.firstChild.style.height =
        (scrollHeight - d.scroller.clientHeight + d.scrollbarV.clientHeight) + "px";
    } else {
      d.scrollbarV.style.display = "";
      d.scrollbarV.firstChild.style.height = "0";
    }
    if (needsH) {
      d.scrollbarH.style.display = "block";
      d.scrollbarH.style.right = needsV ? scrollbarWidth(d.measure) + "px" : "0";
      d.scrollbarH.firstChild.style.width =
        (d.scroller.scrollWidth - d.scroller.clientWidth + d.scrollbarH.clientWidth) + "px";
    } else {
      d.scrollbarH.style.display = "";
      d.scrollbarH.firstChild.style.width = "0";
    }
    if (needsH && needsV) {
      d.scrollbarFiller.style.display = "block";
      d.scrollbarFiller.style.height = d.scrollbarFiller.style.width = scrollbarWidth(d.measure) + "px";
    } else d.scrollbarFiller.style.display = "";
    if (needsH && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) {
      d.gutterFiller.style.display = "block";
      d.gutterFiller.style.height = scrollbarWidth(d.measure) + "px";
      d.gutterFiller.style.width = d.gutters.offsetWidth + "px";
    } else d.gutterFiller.style.display = "";

    if (mac_geLion && scrollbarWidth(d.measure) === 0)
      d.scrollbarV.style.minWidth = d.scrollbarH.style.minHeight = mac_geMountainLion ? "18px" : "12px";
  }

  function visibleLines(display, doc, viewPort) {
    var top = display.scroller.scrollTop, height = display.wrapper.clientHeight;
    if (typeof viewPort == "number") top = viewPort;
    else if (viewPort) {top = viewPort.top; height = viewPort.bottom - viewPort.top;}
    top = Math.floor(top - paddingTop(display));
    var bottom = Math.ceil(top + height);
    return {from: lineAtHeight(doc, top), to: lineAtHeight(doc, bottom)};
  }

  // LINE NUMBERS

  function alignHorizontally(cm) {
    var display = cm.display;
    if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) return;
    var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft;
    var gutterW = display.gutters.offsetWidth, l = comp + "px";
    for (var n = display.lineDiv.firstChild; n; n = n.nextSibling) if (n.alignable) {
      for (var i = 0, a = n.alignable; i < a.length; ++i) a[i].style.left = l;
    }
    if (cm.options.fixedGutter)
      display.gutters.style.left = (comp + gutterW) + "px";
  }

  function maybeUpdateLineNumberWidth(cm) {
    if (!cm.options.lineNumbers) return false;
    var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display;
    if (last.length != display.lineNumChars) {
      var test = display.measure.appendChild(elt("div", [elt("div", last)],
                                                 "CodeMirror-linenumber CodeMirror-gutter-elt"));
      var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW;
      display.lineGutter.style.width = "";
      display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding);
      display.lineNumWidth = display.lineNumInnerWidth + padding;
      display.lineNumChars = display.lineNumInnerWidth ? last.length : -1;
      display.lineGutter.style.width = display.lineNumWidth + "px";
      return true;
    }
    return false;
  }

  function lineNumberFor(options, i) {
    return String(options.lineNumberFormatter(i + options.firstLineNumber));
  }
  function compensateForHScroll(display) {
    return getRect(display.scroller).left - getRect(display.sizer).left;
  }

  // DISPLAY DRAWING

  function updateDisplay(cm, changes, viewPort, forced) {
    var oldFrom = cm.display.showingFrom, oldTo = cm.display.showingTo, updated;
    var visible = visibleLines(cm.display, cm.doc, viewPort);
    for (var first = true;; first = false) {
      var oldWidth = cm.display.scroller.clientWidth;
      if (!updateDisplayInner(cm, changes, visible, forced)) break;
      updated = true;
      changes = [];
      updateSelection(cm);
      updateScrollbars(cm);
      if (first && cm.options.lineWrapping && oldWidth != cm.display.scroller.clientWidth) {
        forced = true;
        continue;
      }
      forced = false;

      // Clip forced viewport to actual scrollable area
      if (viewPort)
        viewPort = Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight,
                            typeof viewPort == "number" ? viewPort : viewPort.top);
      visible = visibleLines(cm.display, cm.doc, viewPort);
      if (visible.from >= cm.display.showingFrom && visible.to <= cm.display.showingTo)
        break;
    }

    if (updated) {
      signalLater(cm, "update", cm);
      if (cm.display.showingFrom != oldFrom || cm.display.showingTo != oldTo)
        signalLater(cm, "viewportChange", cm, cm.display.showingFrom, cm.display.showingTo);
    }
    return updated;
  }

  // Uses a set of changes plus the current scroll position to
  // determine which DOM updates have to be made, and makes the
  // updates.
  function updateDisplayInner(cm, changes, visible, forced) {
    var display = cm.display, doc = cm.doc;
    if (!display.wrapper.clientWidth) {
      display.showingFrom = display.showingTo = doc.first;
      display.viewOffset = 0;
      return;
    }

    // Bail out if the visible area is already rendered and nothing changed.
    if (!forced && changes.length == 0 &&
        visible.from > display.showingFrom && visible.to < display.showingTo)
      return;

    if (maybeUpdateLineNumberWidth(cm))
      changes = [{from: doc.first, to: doc.first + doc.size}];
    var gutterW = display.sizer.style.marginLeft = display.gutters.offsetWidth + "px";
    display.scrollbarH.style.left = cm.options.fixedGutter ? gutterW : "0";

    // Used to determine which lines need their line numbers updated
    var positionsChangedFrom = Infinity;
    if (cm.options.lineNumbers)
      for (var i = 0; i < changes.length; ++i)
        if (changes[i].diff && changes[i].from < positionsChangedFrom) { positionsChangedFrom = changes[i].from; }

    var end = doc.first + doc.size;
    var from = Math.max(visible.from - cm.options.viewportMargin, doc.first);
    var to = Math.min(end, visible.to + cm.options.viewportMargin);
    if (display.showingFrom < from && from - display.showingFrom < 20) from = Math.max(doc.first, display.showingFrom);
    if (display.showingTo > to && display.showingTo - to < 20) to = Math.min(end, display.showingTo);
    if (sawCollapsedSpans) {
      from = lineNo(visualLine(doc, getLine(doc, from)));
      while (to < end && lineIsHidden(doc, getLine(doc, to))) ++to;
    }

    // Create a range of theoretically intact lines, and punch holes
    // in that using the change info.
    var intact = [{from: Math.max(display.showingFrom, doc.first),
                   to: Math.min(display.showingTo, end)}];
    if (intact[0].from >= intact[0].to) intact = [];
    else intact = computeIntact(intact, changes);
    // When merged lines are present, we might have to reduce the
    // intact ranges because changes in continued fragments of the
    // intact lines do require the lines to be redrawn.
    if (sawCollapsedSpans)
      for (var i = 0; i < intact.length; ++i) {
        var range = intact[i], merged;
        while (merged = collapsedSpanAtEnd(getLine(doc, range.to - 1))) {
          var newTo = merged.find().from.line;
          if (newTo > range.from) range.to = newTo;
          else { intact.splice(i--, 1); break; }
        }
      }

    // Clip off the parts that won't be visible
    var intactLines = 0;
    for (var i = 0; i < intact.length; ++i) {
      var range = intact[i];
      if (range.from < from) range.from = from;
      if (range.to > to) range.to = to;
      if (range.from >= range.to) intact.splice(i--, 1);
      else intactLines += range.to - range.from;
    }
    if (!forced && intactLines == to - from && from == display.showingFrom && to == display.showingTo) {
      updateViewOffset(cm);
      return;
    }
    intact.sort(function(a, b) {return a.from - b.from;});

    // Avoid crashing on IE's "unspecified error" when in iframes
    try {
      var focused = document.activeElement;
    } catch(e) {}
    if (intactLines < (to - from) * .7) display.lineDiv.style.display = "none";
    patchDisplay(cm, from, to, intact, positionsChangedFrom);
    display.lineDiv.style.display = "";
    if (focused && document.activeElement != focused && focused.offsetHeight) focused.focus();

    var different = from != display.showingFrom || to != display.showingTo ||
      display.lastSizeC != display.wrapper.clientHeight;
    // This is just a bogus formula that detects when the editor is
    // resized or the font size changes.
    if (different) {
      display.lastSizeC = display.wrapper.clientHeight;
      startWorker(cm, 400);
    }
    display.showingFrom = from; display.showingTo = to;

    updateHeightsInViewport(cm);
    updateViewOffset(cm);

    return true;
  }

  function updateHeightsInViewport(cm) {
    var display = cm.display;
    var prevBottom = display.lineDiv.offsetTop;
    for (var node = display.lineDiv.firstChild, height; node; node = node.nextSibling) if (node.lineObj) {
      if (ie_lt8) {
        var bot = node.offsetTop + node.offsetHeight;
        height = bot - prevBottom;
        prevBottom = bot;
      } else {
        var box = getRect(node);
        height = box.bottom - box.top;
      }
      var diff = node.lineObj.height - height;
      if (height < 2) height = textHeight(display);
      if (diff > .001 || diff < -.001) {
        updateLineHeight(node.lineObj, height);
        var widgets = node.lineObj.widgets;
        if (widgets) for (var i = 0; i < widgets.length; ++i)
          widgets[i].height = widgets[i].node.offsetHeight;
      }
    }
  }

  function updateViewOffset(cm) {
    var off = cm.display.viewOffset = heightAtLine(cm, getLine(cm.doc, cm.display.showingFrom));
    // Position the mover div to align with the current virtual scroll position
    cm.display.mover.style.top = off + "px";
  }

  function computeIntact(intact, changes) {
    for (var i = 0, l = changes.length || 0; i < l; ++i) {
      var change = changes[i], intact2 = [], diff = change.diff || 0;
      for (var j = 0, l2 = intact.length; j < l2; ++j) {
        var range = intact[j];
        if (change.to <= range.from && change.diff) {
          intact2.push({from: range.from + diff, to: range.to + diff});
        } else if (change.to <= range.from || change.from >= range.to) {
          intact2.push(range);
        } else {
          if (change.from > range.from)
            intact2.push({from: range.from, to: change.from});
          if (change.to < range.to)
            intact2.push({from: change.to + diff, to: range.to + diff});
        }
      }
      intact = intact2;
    }
    return intact;
  }

  function getDimensions(cm) {
    var d = cm.display, left = {}, width = {};
    for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {
      left[cm.options.gutters[i]] = n.offsetLeft;
      width[cm.options.gutters[i]] = n.offsetWidth;
    }
    return {fixedPos: compensateForHScroll(d),
            gutterTotalWidth: d.gutters.offsetWidth,
            gutterLeft: left,
            gutterWidth: width,
            wrapperWidth: d.wrapper.clientWidth};
  }

  function patchDisplay(cm, from, to, intact, updateNumbersFrom) {
    var dims = getDimensions(cm);
    var display = cm.display, lineNumbers = cm.options.lineNumbers;
    if (!intact.length && (!webkit || !cm.display.currentWheelTarget))
      removeChildren(display.lineDiv);
    var container = display.lineDiv, cur = container.firstChild;

    function rm(node) {
      var next = node.nextSibling;
      if (webkit && mac && cm.display.currentWheelTarget == node) {
        node.style.display = "none";
        node.lineObj = null;
      } else {
        node.parentNode.removeChild(node);
      }
      return next;
    }

    var nextIntact = intact.shift(), lineN = from;
    cm.doc.iter(from, to, function(line) {
      if (nextIntact && nextIntact.to == lineN) nextIntact = intact.shift();
      if (lineIsHidden(cm.doc, line)) {
        if (line.height != 0) updateLineHeight(line, 0);
        if (line.widgets && cur && cur.previousSibling) for (var i = 0; i < line.widgets.length; ++i) {
          var w = line.widgets[i];
          if (w.showIfHidden) {
            var prev = cur.previousSibling;
            if (/pre/i.test(prev.nodeName)) {
              var wrap = elt("div", null, null, "position: relative");
              prev.parentNode.replaceChild(wrap, prev);
              wrap.appendChild(prev);
              prev = wrap;
            }
            var wnode = prev.appendChild(elt("div", [w.node], "CodeMirror-linewidget"));
            if (!w.handleMouseEvents) wnode.ignoreEvents = true;
            positionLineWidget(w, wnode, prev, dims);
          }
        }
      } else if (nextIntact && nextIntact.from <= lineN && nextIntact.to > lineN) {
        // This line is intact. Skip to the actual node. Update its
        // line number if needed.
        while (cur.lineObj != line) cur = rm(cur);
        if (lineNumbers && updateNumbersFrom <= lineN && cur.lineNumber)
          setTextContent(cur.lineNumber, lineNumberFor(cm.options, lineN));
        cur = cur.nextSibling;
      } else {
        // For lines with widgets, make an attempt to find and reuse
        // the existing element, so that widgets aren't needlessly
        // removed and re-inserted into the dom
        if (line.widgets) for (var j = 0, search = cur, reuse; search && j < 20; ++j, search = search.nextSibling)
          if (search.lineObj == line && /div/i.test(search.nodeName)) { reuse = search; break; }
        // This line needs to be generated.
        var lineNode = buildLineElement(cm, line, lineN, dims, reuse);
        if (lineNode != reuse) {
          container.insertBefore(lineNode, cur);
        } else {
          while (cur != reuse) cur = rm(cur);
          cur = cur.nextSibling;
        }

        lineNode.lineObj = line;
      }
      ++lineN;
    });
    while (cur) cur = rm(cur);
  }

  function buildLineElement(cm, line, lineNo, dims, reuse) {
    var built = buildLineContent(cm, line), lineElement = built.pre;
    var markers = line.gutterMarkers, display = cm.display, wrap;

    var bgClass = built.bgClass ? built.bgClass + " " + (line.bgClass || "") : line.bgClass;
    if (!cm.options.lineNumbers && !markers && !bgClass && !line.wrapClass && !line.widgets)
      return lineElement;

    // Lines with gutter elements, widgets or a background class need
    // to be wrapped again, and have the extra elements added to the
    // wrapper div

    if (reuse) {
      reuse.alignable = null;
      var isOk = true, widgetsSeen = 0, insertBefore = null;
      for (var n = reuse.firstChild, next; n; n = next) {
        next = n.nextSibling;
        if (!/\bCodeMirror-linewidget\b/.test(n.className)) {
          reuse.removeChild(n);
        } else {
          for (var i = 0; i < line.widgets.length; ++i) {
            var widget = line.widgets[i];
            if (widget.node == n.firstChild) {
              if (!widget.above && !insertBefore) insertBefore = n;
              positionLineWidget(widget, n, reuse, dims);
              ++widgetsSeen;
              break;
            }
          }
          if (i == line.widgets.length) { isOk = false; break; }
        }
      }
      reuse.insertBefore(lineElement, insertBefore);
      if (isOk && widgetsSeen == line.widgets.length) {
        wrap = reuse;
        reuse.className = line.wrapClass || "";
      }
    }
    if (!wrap) {
      wrap = elt("div", null, line.wrapClass, "position: relative");
      wrap.appendChild(lineElement);
    }
    // Kludge to make sure the styled element lies behind the selection (by z-index)
    if (bgClass)
      wrap.insertBefore(elt("div", null, bgClass + " CodeMirror-linebackground"), wrap.firstChild);
    if (cm.options.lineNumbers || markers) {
      var gutterWrap = wrap.insertBefore(elt("div", null, null, "position: absolute; left: " +
                                             (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px"),
                                         wrap.firstChild);
      if (cm.options.fixedGutter) (wrap.alignable || (wrap.alignable = [])).push(gutterWrap);
      if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"]))
        wrap.lineNumber = gutterWrap.appendChild(
          elt("div", lineNumberFor(cm.options, lineNo),
              "CodeMirror-linenumber CodeMirror-gutter-elt",
              "left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: "
              + display.lineNumInnerWidth + "px"));
      if (markers)
        for (var k = 0; k < cm.options.gutters.length; ++k) {
          var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id];
          if (found)
            gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", "left: " +
                                       dims.gutterLeft[id] + "px; width: " + dims.gutterWidth[id] + "px"));
        }
    }
    if (ie_lt8) wrap.style.zIndex = 2;
    if (line.widgets && wrap != reuse) for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
      var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget");
      if (!widget.handleMouseEvents) node.ignoreEvents = true;
      positionLineWidget(widget, node, wrap, dims);
      if (widget.above)
        wrap.insertBefore(node, cm.options.lineNumbers && line.height != 0 ? gutterWrap : lineElement);
      else
        wrap.appendChild(node);
      signalLater(widget, "redraw");
    }
    return wrap;
  }

  function positionLineWidget(widget, node, wrap, dims) {
    if (widget.noHScroll) {
      (wrap.alignable || (wrap.alignable = [])).push(node);
      var width = dims.wrapperWidth;
      node.style.left = dims.fixedPos + "px";
      if (!widget.coverGutter) {
        width -= dims.gutterTotalWidth;
        node.style.paddingLeft = dims.gutterTotalWidth + "px";
      }
      node.style.width = width + "px";
    }
    if (widget.coverGutter) {
      node.style.zIndex = 5;
      node.style.position = "relative";
      if (!widget.noHScroll) node.style.marginLeft = -dims.gutterTotalWidth + "px";
    }
  }

  // SELECTION / CURSOR

  function updateSelection(cm) {
    var display = cm.display;
    var collapsed = posEq(cm.doc.sel.from, cm.doc.sel.to);
    if (collapsed || cm.options.showCursorWhenSelecting)
      updateSelectionCursor(cm);
    else
      display.cursor.style.display = display.otherCursor.style.display = "none";
    if (!collapsed)
      updateSelectionRange(cm);
    else
      display.selectionDiv.style.display = "none";

    // Move the hidden textarea near the cursor to prevent scrolling artifacts
    if (cm.options.moveInputWithCursor) {
      var headPos = cursorCoords(cm, cm.doc.sel.head, "div");
      var wrapOff = getRect(display.wrapper), lineOff = getRect(display.lineDiv);
      display.inputDiv.style.top = Math.max(0, Math.min(display.wrapper.clientHeight - 10,
                                                        headPos.top + lineOff.top - wrapOff.top)) + "px";
      display.inputDiv.style.left = Math.max(0, Math.min(display.wrapper.clientWidth - 10,
                                                         headPos.left + lineOff.left - wrapOff.left)) + "px";
    }
  }

  // No selection, plain cursor
  function updateSelectionCursor(cm) {
    var display = cm.display, pos = cursorCoords(cm, cm.doc.sel.head, "div");
    display.cursor.style.left = pos.left + "px";
    display.cursor.style.top = pos.top + "px";
    display.cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px";
    display.cursor.style.display = "";

    if (pos.other) {
      display.otherCursor.style.display = "";
      display.otherCursor.style.left = pos.other.left + "px";
      display.otherCursor.style.top = pos.other.top + "px";
      display.otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px";
    } else { display.otherCursor.style.display = "none"; }
  }

  // Highlight selection
  function updateSelectionRange(cm) {
    var display = cm.display, doc = cm.doc, sel = cm.doc.sel;
    var fragment = document.createDocumentFragment();
    var clientWidth = display.lineSpace.offsetWidth, pl = paddingLeft(cm.display);

    function add(left, top, width, bottom) {
      if (top < 0) top = 0;
      fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left +
                               "px; top: " + top + "px; width: " + (width == null ? clientWidth - left : width) +
                               "px; height: " + (bottom - top) + "px"));
    }

    function drawForLine(line, fromArg, toArg) {
      var lineObj = getLine(doc, line);
      var lineLen = lineObj.text.length;
      var start, end;
      function coords(ch, bias) {
        return charCoords(cm, Pos(line, ch), "div", lineObj, bias);
      }

      iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) {
        var leftPos = coords(from, "left"), rightPos, left, right;
        if (from == to) {
          rightPos = leftPos;
          left = right = leftPos.left;
        } else {
          rightPos = coords(to - 1, "right");
          if (dir == "rtl") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp; }
          left = leftPos.left;
          right = rightPos.right;
        }
        if (fromArg == null && from == 0) left = pl;
        if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part
          add(left, leftPos.top, null, leftPos.bottom);
          left = pl;
          if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top);
        }
        if (toArg == null && to == lineLen) right = clientWidth;
        if (!start || leftPos.top < start.top || leftPos.top == start.top && leftPos.left < start.left)
          start = leftPos;
        if (!end || rightPos.bottom > end.bottom || rightPos.bottom == end.bottom && rightPos.right > end.right)
          end = rightPos;
        if (left < pl + 1) left = pl;
        add(left, rightPos.top, right - left, rightPos.bottom);
      });
      return {start: start, end: end};
    }

    if (sel.from.line == sel.to.line) {
      drawForLine(sel.from.line, sel.from.ch, sel.to.ch);
    } else {
      var fromLine = getLine(doc, sel.from.line), toLine = getLine(doc, sel.to.line);
      var singleVLine = visualLine(doc, fromLine) == visualLine(doc, toLine);
      var leftEnd = drawForLine(sel.from.line, sel.from.ch, singleVLine ? fromLine.text.length : null).end;
      var rightStart = drawForLine(sel.to.line, singleVLine ? 0 : null, sel.to.ch).start;
      if (singleVLine) {
        if (leftEnd.top < rightStart.top - 2) {
          add(leftEnd.right, leftEnd.top, null, leftEnd.bottom);
          add(pl, rightStart.top, rightStart.left, rightStart.bottom);
        } else {
          add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom);
        }
      }
      if (leftEnd.bottom < rightStart.top)
        add(pl, leftEnd.bottom, null, rightStart.top);
    }

    removeChildrenAndAdd(display.selectionDiv, fragment);
    display.selectionDiv.style.display = "";
  }

  // Cursor-blinking
  function restartBlink(cm) {
    if (!cm.state.focused) return;
    var display = cm.display;
    clearInterval(display.blinker);
    var on = true;
    display.cursor.style.visibility = display.otherCursor.style.visibility = "";
    if (cm.options.cursorBlinkRate > 0)
      display.blinker = setInterval(function() {
        display.cursor.style.visibility = display.otherCursor.style.visibility = (on = !on) ? "" : "hidden";
      }, cm.options.cursorBlinkRate);
  }

  // HIGHLIGHT WORKER

  function startWorker(cm, time) {
    if (cm.doc.mode.startState && cm.doc.frontier < cm.display.showingTo)
      cm.state.highlight.set(time, bind(highlightWorker, cm));
  }

  function highlightWorker(cm) {
    var doc = cm.doc;
    if (doc.frontier < doc.first) doc.frontier = doc.first;
    if (doc.frontier >= cm.display.showingTo) return;
    var end = +new Date + cm.options.workTime;
    var state = copyState(doc.mode, getStateBefore(cm, doc.frontier));
    var changed = [], prevChange;
    doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.showingTo + 500), function(line) {
      if (doc.frontier >= cm.display.showingFrom) { // Visible
        var oldStyles = line.styles;
        line.styles = highlightLine(cm, line, state);
        var ischange = !oldStyles || oldStyles.length != line.styles.length;
        for (var i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i];
        if (ischange) {
          if (prevChange && prevChange.end == doc.frontier) prevChange.end++;
          else changed.push(prevChange = {start: doc.frontier, end: doc.frontier + 1});
        }
        line.stateAfter = copyState(doc.mode, state);
      } else {
        processLine(cm, line, state);
        line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null;
      }
      ++doc.frontier;
      if (+new Date > end) {
        startWorker(cm, cm.options.workDelay);
        return true;
      }
    });
    if (changed.length)
      operation(cm, function() {
        for (var i = 0; i < changed.length; ++i)
          regChange(this, changed[i].start, changed[i].end);
      })();
  }

  // Finds the line to start with when starting a parse. Tries to
  // find a line with a stateAfter, so that it can start with a
  // valid state. If that fails, it returns the line with the
  // smallest indentation, which tends to need the least context to
  // parse correctly.
  function findStartLine(cm, n, precise) {
    var minindent, minline, doc = cm.doc, maxScan = cm.doc.mode.innerMode ? 1000 : 100;
    for (var search = n, lim = n - maxScan; search > lim; --search) {
      if (search <= doc.first) return doc.first;
      var line = getLine(doc, search - 1);
      if (line.stateAfter && (!precise || search <= doc.frontier)) return search;
      var indented = countColumn(line.text, null, cm.options.tabSize);
      if (minline == null || minindent > indented) {
        minline = search - 1;
        minindent = indented;
      }
    }
    return minline;
  }

  function getStateBefore(cm, n, precise) {
    var doc = cm.doc, display = cm.display;
    if (!doc.mode.startState) return true;
    var pos = findStartLine(cm, n, precise), state = pos > doc.first && getLine(doc, pos-1).stateAfter;
    if (!state) state = startState(doc.mode);
    else state = copyState(doc.mode, state);
    doc.iter(pos, n, function(line) {
      processLine(cm, line, state);
      var save = pos == n - 1 || pos % 5 == 0 || pos >= display.showingFrom && pos < display.showingTo;
      line.stateAfter = save ? copyState(doc.mode, state) : null;
      ++pos;
    });
    return state;
  }

  // POSITION MEASUREMENT

  function paddingTop(display) {return display.lineSpace.offsetTop;}
  function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight;}
  function paddingLeft(display) {
    var e = removeChildrenAndAdd(display.measure, elt("pre", null, null, "text-align: left")).appendChild(elt("span", "x"));
    return e.offsetLeft;
  }

  function measureChar(cm, line, ch, data, bias) {
    var dir = -1;
    data = data || measureLine(cm, line);
    if (data.crude) {
      var left = data.left + ch * data.width;
      return {left: left, right: left + data.width, top: data.top, bottom: data.bottom};
    }

    for (var pos = ch;; pos += dir) {
      var r = data[pos];
      if (r) break;
      if (dir < 0 && pos == 0) dir = 1;
    }
    bias = pos > ch ? "left" : pos < ch ? "right" : bias;
    if (bias == "left" && r.leftSide) r = r.leftSide;
    else if (bias == "right" && r.rightSide) r = r.rightSide;
    return {left: pos < ch ? r.right : r.left,
            right: pos > ch ? r.left : r.right,
            top: r.top,
            bottom: r.bottom};
  }

  function findCachedMeasurement(cm, line) {
    var cache = cm.display.measureLineCache;
    for (var i = 0; i < cache.length; ++i) {
      var memo = cache[i];
      if (memo.text == line.text && memo.markedSpans == line.markedSpans &&
          cm.display.scroller.clientWidth == memo.width &&
          memo.classes == line.textClass + "|" + line.wrapClass)
        return memo;
    }
  }

  function clearCachedMeasurement(cm, line) {
    var exists = findCachedMeasurement(cm, line);
    if (exists) exists.text = exists.measure = exists.markedSpans = null;
  }

  function measureLine(cm, line) {
    // First look in the cache
    var cached = findCachedMeasurement(cm, line);
    if (cached) return cached.measure;

    // Failing that, recompute and store result in cache
    var measure = measureLineInner(cm, line);
    var cache = cm.display.measureLineCache;
    var memo = {text: line.text, width: cm.display.scroller.clientWidth,
                markedSpans: line.markedSpans, measure: measure,
                classes: line.textClass + "|" + line.wrapClass};
    if (cache.length == 16) cache[++cm.display.measureLineCachePos % 16] = memo;
    else cache.push(memo);
    return measure;
  }

  function measureLineInner(cm, line) {
    if (!cm.options.lineWrapping && line.text.length >= cm.options.crudeMeasuringFrom)
      return crudelyMeasureLine(cm, line);

    var display = cm.display, measure = emptyArray(line.text.length);
    var pre = buildLineContent(cm, line, measure, true).pre;

    // IE does not cache element positions of inline elements between
    // calls to getBoundingClientRect. This makes the loop below,
    // which gathers the positions of all the characters on the line,
    // do an amount of layout work quadratic to the number of
    // characters. When line wrapping is off, we try to improve things
    // by first subdividing the line into a bunch of inline blocks, so
    // that IE can reuse most of the layout information from caches
    // for those blocks. This does interfere with line wrapping, so it
    // doesn't work when wrapping is on, but in that case the
    // situation is slightly better, since IE does cache line-wrapping
    // information and only recomputes per-line.
    if (ie && !ie_lt8 && !cm.options.lineWrapping && pre.childNodes.length > 100) {
      var fragment = document.createDocumentFragment();
      var chunk = 10, n = pre.childNodes.length;
      for (var i = 0, chunks = Math.ceil(n / chunk); i < chunks; ++i) {
        var wrap = elt("div", null, null, "display: inline-block");
        for (var j = 0; j < chunk && n; ++j) {
          wrap.appendChild(pre.firstChild);
          --n;
        }
        fragment.appendChild(wrap);
      }
      pre.appendChild(fragment);
    }

    removeChildrenAndAdd(display.measure, pre);

    var outer = getRect(display.lineDiv);
    var vranges = [], data = emptyArray(line.text.length), maxBot = pre.offsetHeight;
    // Work around an IE7/8 bug where it will sometimes have randomly
    // replaced our pre with a clone at this point.
    if (ie_lt9 && display.measure.first != pre)
      removeChildrenAndAdd(display.measure, pre);

    function measureRect(rect) {
      var top = rect.top - outer.top, bot = rect.bottom - outer.top;
      if (bot > maxBot) bot = maxBot;
      if (top < 0) top = 0;
      for (var i = vranges.length - 2; i >= 0; i -= 2) {
        var rtop = vranges[i], rbot = vranges[i+1];
        if (rtop > bot || rbot < top) continue;
        if (rtop <= top && rbot >= bot ||
            top <= rtop && bot >= rbot ||
            Math.min(bot, rbot) - Math.max(top, rtop) >= (bot - top) >> 1) {
          vranges[i] = Math.min(top, rtop);
          vranges[i+1] = Math.max(bot, rbot);
          break;
        }
      }
      if (i < 0) { i = vranges.length; vranges.push(top, bot); }
      return {left: rect.left - outer.left,
              right: rect.right - outer.left,
              top: i, bottom: null};
    }
    function finishRect(rect) {
      rect.bottom = vranges[rect.top+1];
      rect.top = vranges[rect.top];
    }

    for (var i = 0, cur; i < measure.length; ++i) if (cur = measure[i]) {
      var node = cur, rect = null;
      // A widget might wrap, needs special care
      if (/\bCodeMirror-widget\b/.test(cur.className) && cur.getClientRects) {
        if (cur.firstChild.nodeType == 1) node = cur.firstChild;
        var rects = node.getClientRects();
        if (rects.length > 1) {
          rect = data[i] = measureRect(rects[0]);
          rect.rightSide = measureRect(rects[rects.length - 1]);
        }
      }
      if (!rect) rect = data[i] = measureRect(getRect(node));
      if (cur.measureRight) rect.right = getRect(cur.measureRight).left;
      if (cur.leftSide) rect.leftSide = measureRect(getRect(cur.leftSide));
    }
    removeChildren(cm.display.measure);
    for (var i = 0, cur; i < data.length; ++i) if (cur = data[i]) {
      finishRect(cur);
      if (cur.leftSide) finishRect(cur.leftSide);
      if (cur.rightSide) finishRect(cur.rightSide);
    }
    return data;
  }

  function crudelyMeasureLine(cm, line) {
    var copy = new Line(line.text.slice(0, 100), null);
    if (line.textClass) copy.textClass = line.textClass;
    var measure = measureLineInner(cm, copy);
    var left = measureChar(cm, copy, 0, measure, "left");
    var right = measureChar(cm, copy, 99, measure, "right");
    return {crude: true, top: left.top, left: left.left, bottom: left.bottom, width: (right.right - left.left) / 100};
  }

  function measureLineWidth(cm, line) {
    var hasBadSpan = false;
    if (line.markedSpans) for (var i = 0; i < line.markedSpans; ++i) {
      var sp = line.markedSpans[i];
      if (sp.collapsed && (sp.to == null || sp.to == line.text.length)) hasBadSpan = true;
    }
    var cached = !hasBadSpan && findCachedMeasurement(cm, line);
    if (cached || line.text.length >= cm.options.crudeMeasuringFrom)
      return measureChar(cm, line, line.text.length, cached && cached.measure, "right").right;

    var pre = buildLineContent(cm, line, null, true).pre;
    var end = pre.appendChild(zeroWidthElement(cm.display.measure));
    removeChildrenAndAdd(cm.display.measure, pre);
    return getRect(end).right - getRect(cm.display.lineDiv).left;
  }

  function clearCaches(cm) {
    cm.display.measureLineCache.length = cm.display.measureLineCachePos = 0;
    cm.display.cachedCharWidth = cm.display.cachedTextHeight = null;
    if (!cm.options.lineWrapping) cm.display.maxLineChanged = true;
    cm.display.lineNumChars = null;
  }

  function pageScrollX() { return window.pageXOffset || (document.documentElement || document.body).scrollLeft; }
  function pageScrollY() { return window.pageYOffset || (document.documentElement || document.body).scrollTop; }

  // Context is one of "line", "div" (display.lineDiv), "local"/null (editor), or "page"
  function intoCoordSystem(cm, lineObj, rect, context) {
    if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) {
      var size = widgetHeight(lineObj.widgets[i]);
      rect.top += size; rect.bottom += size;
    }
    if (context == "line") return rect;
    if (!context) context = "local";
    var yOff = heightAtLine(cm, lineObj);
    if (context == "local") yOff += paddingTop(cm.display);
    else yOff -= cm.display.viewOffset;
    if (context == "page" || context == "window") {
      var lOff = getRect(cm.display.lineSpace);
      yOff += lOff.top + (context == "window" ? 0 : pageScrollY());
      var xOff = lOff.left + (context == "window" ? 0 : pageScrollX());
      rect.left += xOff; rect.right += xOff;
    }
    rect.top += yOff; rect.bottom += yOff;
    return rect;
  }

  // Context may be "window", "page", "div", or "local"/null
  // Result is in "div" coords
  function fromCoordSystem(cm, coords, context) {
    if (context == "div") return coords;
    var left = coords.left, top = coords.top;
    // First move into "page" coordinate system
    if (context == "page") {
      left -= pageScrollX();
      top -= pageScrollY();
    } else if (context == "local" || !context) {
      var localBox = getRect(cm.display.sizer);
      left += localBox.left;
      top += localBox.top;
    }

    var lineSpaceBox = getRect(cm.display.lineSpace);
    return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top};
  }

  function charCoords(cm, pos, context, lineObj, bias) {
    if (!lineObj) lineObj = getLine(cm.doc, pos.line);
    return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, null, bias), context);
  }

  function cursorCoords(cm, pos, context, lineObj, measurement) {
    lineObj = lineObj || getLine(cm.doc, pos.line);
    if (!measurement) measurement = measureLine(cm, lineObj);
    function get(ch, right) {
      var m = measureChar(cm, lineObj, ch, measurement, right ? "right" : "left");
      if (right) m.left = m.right; else m.right = m.left;
      return intoCoordSystem(cm, lineObj, m, context);
    }
    function getBidi(ch, partPos) {
      var part = order[partPos], right = part.level % 2;
      if (ch == bidiLeft(part) && partPos && part.level < order[partPos - 1].level) {
        part = order[--partPos];
        ch = bidiRight(part) - (part.level % 2 ? 0 : 1);
        right = true;
      } else if (ch == bidiRight(part) && partPos < order.length - 1 && part.level < order[partPos + 1].level) {
        part = order[++partPos];
        ch = bidiLeft(part) - part.level % 2;
        right = false;
      }
      if (right && ch == part.to && ch > part.from) return get(ch - 1);
      return get(ch, right);
    }
    var order = getOrder(lineObj), ch = pos.ch;
    if (!order) return get(ch);
    var partPos = getBidiPartAt(order, ch);
    var val = getBidi(ch, partPos);
    if (bidiOther != null) val.other = getBidi(ch, bidiOther);
    return val;
  }

  function PosWithInfo(line, ch, outside, xRel) {
    var pos = new Pos(line, ch);
    pos.xRel = xRel;
    if (outside) pos.outside = true;
    return pos;
  }

  // Coords must be lineSpace-local
  function coordsChar(cm, x, y) {
    var doc = cm.doc;
    y += cm.display.viewOffset;
    if (y < 0) return PosWithInfo(doc.first, 0, true, -1);
    var lineNo = lineAtHeight(doc, y), last = doc.first + doc.size - 1;
    if (lineNo > last)
      return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, true, 1);
    if (x < 0) x = 0;

    for (;;) {
      var lineObj = getLine(doc, lineNo);
      var found = coordsCharInner(cm, lineObj, lineNo, x, y);
      var merged = collapsedSpanAtEnd(lineObj);
      var mergedPos = merged && merged.find();
      if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0))
        lineNo = mergedPos.to.line;
      else
        return found;
    }
  }

  function coordsCharInner(cm, lineObj, lineNo, x, y) {
    var innerOff = y - heightAtLine(cm, lineObj);
    var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth;
    var measurement = measureLine(cm, lineObj);

    function getX(ch) {
      var sp = cursorCoords(cm, Pos(lineNo, ch), "line",
                            lineObj, measurement);
      wrongLine = true;
      if (innerOff > sp.bottom) return sp.left - adjust;
      else if (innerOff < sp.top) return sp.left + adjust;
      else wrongLine = false;
      return sp.left;
    }

    var bidi = getOrder(lineObj), dist = lineObj.text.length;
    var from = lineLeft(lineObj), to = lineRight(lineObj);
    var fromX = getX(from), fromOutside = wrongLine, toX = getX(to), toOutside = wrongLine;

    if (x > toX) return PosWithInfo(lineNo, to, toOutside, 1);
    // Do a binary search between these bounds.
    for (;;) {
      if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) {
        var ch = x < fromX || x - fromX <= toX - x ? from : to;
        var xDiff = x - (ch == from ? fromX : toX);
        while (isExtendingChar.test(lineObj.text.charAt(ch))) ++ch;
        var pos = PosWithInfo(lineNo, ch, ch == from ? fromOutside : toOutside,
                              xDiff < 0 ? -1 : xDiff ? 1 : 0);
        return pos;
      }
      var step = Math.ceil(dist / 2), middle = from + step;
      if (bidi) {
        middle = from;
        for (var i = 0; i < step; ++i) middle = moveVisually(lineObj, middle, 1);
      }
      var middleX = getX(middle);
      if (middleX > x) {to = middle; toX = middleX; if (toOutside = wrongLine) toX += 1000; dist = step;}
      else {from = middle; fromX = middleX; fromOutside = wrongLine; dist -= step;}
    }
  }

  var measureText;
  function textHeight(display) {
    if (display.cachedTextHeight != null) return display.cachedTextHeight;
    if (measureText == null) {
      measureText = elt("pre");
      // Measure a bunch of lines, for browsers that compute
      // fractional heights.
      for (var i = 0; i < 49; ++i) {
        measureText.appendChild(document.createTextNode("x"));
        measureText.appendChild(elt("br"));
      }
      measureText.appendChild(document.createTextNode("x"));
    }
    removeChildrenAndAdd(display.measure, measureText);
    var height = measureText.offsetHeight / 50;
    if (height > 3) display.cachedTextHeight = height;
    removeChildren(display.measure);
    return height || 1;
  }

  function charWidth(display) {
    if (display.cachedCharWidth != null) return display.cachedCharWidth;
    var anchor = elt("span", "x");
    var pre = elt("pre", [anchor]);
    removeChildrenAndAdd(display.measure, pre);
    var width = anchor.offsetWidth;
    if (width > 2) display.cachedCharWidth = width;
    return width || 10;
  }

  // OPERATIONS

  // Operations are used to wrap changes in such a way that each
  // change won't have to update the cursor and display (which would
  // be awkward, slow, and error-prone), but instead updates are
  // batched and then all combined and executed at once.

  var nextOpId = 0;
  function startOperation(cm) {
    cm.curOp = {
      // An array of ranges of lines that have to be updated. See
      // updateDisplay.
      changes: [],
      forceUpdate: false,
      updateInput: null,
      userSelChange: null,
      textChanged: null,
      selectionChanged: false,
      cursorActivity: false,
      updateMaxLine: false,
      updateScrollPos: false,
      id: ++nextOpId
    };
    if (!delayedCallbackDepth++) delayedCallbacks = [];
  }

  function endOperation(cm) {
    var op = cm.curOp, doc = cm.doc, display = cm.display;
    cm.curOp = null;

    if (op.updateMaxLine) computeMaxLength(cm);
    if (display.maxLineChanged && !cm.options.lineWrapping && display.maxLine) {
      var width = measureLineWidth(cm, display.maxLine);
      display.sizer.style.minWidth = Math.max(0, width + 3 + scrollerCutOff) + "px";
      display.maxLineChanged = false;
      var maxScrollLeft = Math.max(0, display.sizer.offsetLeft + display.sizer.offsetWidth - display.scroller.clientWidth);
      if (maxScrollLeft < doc.scrollLeft && !op.updateScrollPos)
        setScrollLeft(cm, Math.min(display.scroller.scrollLeft, maxScrollLeft), true);
    }
    var newScrollPos, updated;
    if (op.updateScrollPos) {
      newScrollPos = op.updateScrollPos;
    } else if (op.selectionChanged && display.scroller.clientHeight) { // don't rescroll if not visible
      var coords = cursorCoords(cm, doc.sel.head);
      newScrollPos = calculateScrollPos(cm, coords.left, coords.top, coords.left, coords.bottom);
    }
    if (op.changes.length || op.forceUpdate || newScrollPos && newScrollPos.scrollTop != null) {
      updated = updateDisplay(cm, op.changes, newScrollPos && newScrollPos.scrollTop, op.forceUpdate);
      if (cm.display.scroller.offsetHeight) cm.doc.scrollTop = cm.display.scroller.scrollTop;
    }
    if (!updated && op.selectionChanged) updateSelection(cm);
    if (op.updateScrollPos) {
      display.scroller.scrollTop = display.scrollbarV.scrollTop = doc.scrollTop = newScrollPos.scrollTop;
      display.scroller.scrollLeft = display.scrollbarH.scrollLeft = doc.scrollLeft = newScrollPos.scrollLeft;
      alignHorizontally(cm);
      if (op.scrollToPos)
        scrollPosIntoView(cm, clipPos(cm.doc, op.scrollToPos), op.scrollToPosMargin);
    } else if (newScrollPos) {
      scrollCursorIntoView(cm);
    }
    if (op.selectionChanged) restartBlink(cm);

    if (cm.state.focused && op.updateInput)
      resetInput(cm, op.userSelChange);

    var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers;
    if (hidden) for (var i = 0; i < hidden.length; ++i)
      if (!hidden[i].lines.length) signal(hidden[i], "hide");
    if (unhidden) for (var i = 0; i < unhidden.length; ++i)
      if (unhidden[i].lines.length) signal(unhidden[i], "unhide");

    var delayed;
    if (!--delayedCallbackDepth) {
      delayed = delayedCallbacks;
      delayedCallbacks = null;
    }
    if (op.textChanged)
      signal(cm, "change", cm, op.textChanged);
    if (op.cursorActivity) signal(cm, "cursorActivity", cm);
    if (delayed) for (var i = 0; i < delayed.length; ++i) delayed[i]();
  }

  // Wraps a function in an operation. Returns the wrapped function.
  function operation(cm1, f) {
    return function() {
      var cm = cm1 || this, withOp = !cm.curOp;
      if (withOp) startOperation(cm);
      try { var result = f.apply(cm, arguments); }
      finally { if (withOp) endOperation(cm); }
      return result;
    };
  }
  function docOperation(f) {
    return function() {
      var withOp = this.cm && !this.cm.curOp, result;
      if (withOp) startOperation(this.cm);
      try { result = f.apply(this, arguments); }
      finally { if (withOp) endOperation(this.cm); }
      return result;
    };
  }
  function runInOp(cm, f) {
    var withOp = !cm.curOp, result;
    if (withOp) startOperation(cm);
    try { result = f(); }
    finally { if (withOp) endOperation(cm); }
    return result;
  }

  function regChange(cm, from, to, lendiff) {
    if (from == null) from = cm.doc.first;
    if (to == null) to = cm.doc.first + cm.doc.size;
    cm.curOp.changes.push({from: from, to: to, diff: lendiff});
  }

  // INPUT HANDLING

  function slowPoll(cm) {
    if (cm.display.pollingFast) return;
    cm.display.poll.set(cm.options.pollInterval, function() {
      readInput(cm);
      if (cm.state.focused) slowPoll(cm);
    });
  }

  function fastPoll(cm) {
    var missed = false;
    cm.display.pollingFast = true;
    function p() {
      var changed = readInput(cm);
      if (!changed && !missed) {missed = true; cm.display.poll.set(60, p);}
      else {cm.display.pollingFast = false; slowPoll(cm);}
    }
    cm.display.poll.set(20, p);
  }

  // prevInput is a hack to work with IME. If we reset the textarea
  // on every change, that breaks IME. So we look for changes
  // compared to the previous content instead. (Modern browsers have
  // events that indicate IME taking place, but these are not widely
  // supported or compatible enough yet to rely on.)
  function readInput(cm) {
    var input = cm.display.input, prevInput = cm.display.prevInput, doc = cm.doc, sel = doc.sel;
    if (!cm.state.focused || hasSelection(input) || isReadOnly(cm) || cm.state.disableInput) return false;
    if (cm.state.pasteIncoming && cm.state.fakedLastChar) {
      input.value = input.value.substring(0, input.value.length - 1);
      cm.state.fakedLastChar = false;
    }
    var text = input.value;
    if (text == prevInput && posEq(sel.from, sel.to)) return false;
    if (ie && !ie_lt9 && cm.display.inputHasSelection === text) {
      resetInput(cm, true);
      return false;
    }
    if (cm.state.ignorePaste) {
      resetInput(cm, true);
      delete cm.state.ignorePaste;
      return false;
    }

    var withOp = !cm.curOp;
    if (withOp) startOperation(cm);
    sel.shift = false;
    var same = 0, l = Math.min(prevInput.length, text.length);
    while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) ++same;
    var from = sel.from, to = sel.to;
    if (same < prevInput.length)
      from = Pos(from.line, from.ch - (prevInput.length - same));
    else if (cm.state.overwrite && posEq(from, to) && !cm.state.pasteIncoming)
      to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + (text.length - same)));

    var updateInput = cm.curOp.updateInput;
    var changeEvent = {from: from, to: to, text: splitLines(text.slice(same)),
                       origin: cm.state.pasteIncoming ? "paste" : "+input"};
    makeChange(cm.doc, changeEvent, "end");
    cm.curOp.updateInput = updateInput;
    signalLater(cm, "inputRead", cm, changeEvent);

    if (text.length > 1000 || text.indexOf("\n") > -1) input.value = cm.display.prevInput = "";
    else cm.display.prevInput = text;
    if (withOp) endOperation(cm);
    cm.state.pasteIncoming = false;
    return true;
  }

  function resetInput(cm, user) {
    var minimal, selected, doc = cm.doc;
    if (!posEq(doc.sel.from, doc.sel.to)) {
      cm.display.prevInput = "";
      minimal = hasCopyEvent &&
        (doc.sel.to.line - doc.sel.from.line > 100 || (selected = cm.getSelection()).length > 1000);
      var content = minimal ? "-" : selected || cm.getSelection();
      cm.display.input.value = content;
      if (cm.state.focused) selectInput(cm.display.input);
      if (ie && !ie_lt9) cm.display.inputHasSelection = content;
    } else if (user) {
      cm.display.prevInput = cm.display.input.value = "";
      if (ie && !ie_lt9) cm.display.inputHasSelection = null;
    }
    cm.display.inaccurateSelection = minimal;
  }

  function focusInput(cm) {
    if (cm.options.readOnly != "nocursor" && (!mobile || document.activeElement != cm.display.input))
      cm.display.input.focus();
  }

  function isReadOnly(cm) {
    return cm.options.readOnly || cm.doc.cantEdit;
  }

  // EVENT HANDLERS

  function registerEventHandlers(cm) {
    var d = cm.display;
    on(d.scroller, "mousedown", operation(cm, onMouseDown));
    if (ie)
      on(d.scroller, "dblclick", operation(cm, function(e) {
        if (signalDOMEvent(cm, e)) return;
        var pos = posFromMouse(cm, e);
        if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) return;
        e_preventDefault(e);
        var word = findWordAt(getLine(cm.doc, pos.line).text, pos);
        extendSelection(cm.doc, word.from, word.to);
      }));
    else
      on(d.scroller, "dblclick", function(e) { signalDOMEvent(cm, e) || e_preventDefault(e); });
    on(d.lineSpace, "selectstart", function(e) {
      if (!eventInWidget(d, e)) e_preventDefault(e);
    });
    // Gecko browsers fire contextmenu *after* opening the menu, at
    // which point we can't mess with it anymore. Context menu is
    // handled in onMouseDown for Gecko.
    if (!captureMiddleClick) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);});

    on(d.scroller, "scroll", function() {
      if (d.scroller.clientHeight) {
        setScrollTop(cm, d.scroller.scrollTop);
        setScrollLeft(cm, d.scroller.scrollLeft, true);
        signal(cm, "scroll", cm);
      }
    });
    on(d.scrollbarV, "scroll", function() {
      if (d.scroller.clientHeight) setScrollTop(cm, d.scrollbarV.scrollTop);
    });
    on(d.scrollbarH, "scroll", function() {
      if (d.scroller.clientHeight) setScrollLeft(cm, d.scrollbarH.scrollLeft);
    });

    on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);});
    on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);});

    function reFocus() { if (cm.state.focused) setTimeout(bind(focusInput, cm), 0); }
    on(d.scrollbarH, "mousedown", reFocus);
    on(d.scrollbarV, "mousedown", reFocus);
    // Prevent wrapper from ever scrolling
    on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });

    var resizeTimer;
    function onResize() {
      if (resizeTimer == null) resizeTimer = setTimeout(function() {
        resizeTimer = null;
        // Might be a text scaling operation, clear size caches.
        d.cachedCharWidth = d.cachedTextHeight = knownScrollbarWidth = null;
        clearCaches(cm);
        runInOp(cm, bind(regChange, cm));
      }, 100);
    }
    on(window, "resize", onResize);
    // Above handler holds on to the editor and its data structures.
    // Here we poll to unregister it when the editor is no longer in
    // the document, so that it can be garbage-collected.
    function unregister() {
      for (var p = d.wrapper.parentNode; p && p != document.body; p = p.parentNode) {}
      if (p) setTimeout(unregister, 5000);
      else off(window, "resize", onResize);
    }
    setTimeout(unregister, 5000);

    on(d.input, "keyup", operation(cm, function(e) {
      if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;
      if (e.keyCode == 16) cm.doc.sel.shift = false;
    }));
    on(d.input, "input", function() {
      if (ie && !ie_lt9 && cm.display.inputHasSelection) cm.display.inputHasSelection = null;
      fastPoll(cm);
    });
    on(d.input, "keydown", operation(cm, onKeyDown));
    on(d.input, "keypress", operation(cm, onKeyPress));
    on(d.input, "focus", bind(onFocus, cm));
    on(d.input, "blur", bind(onBlur, cm));

    function drag_(e) {
      if (signalDOMEvent(cm, e) || cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))) return;
      e_stop(e);
    }
    if (cm.options.dragDrop) {
      on(d.scroller, "dragstart", function(e){onDragStart(cm, e);});
      on(d.scroller, "dragenter", drag_);
      on(d.scroller, "dragover", drag_);
      on(d.scroller, "drop", operation(cm, onDrop));
    }
    on(d.scroller, "paste", function(e) {
      if (eventInWidget(d, e)) return;
      focusInput(cm);
      fastPoll(cm);
    });
    on(d.input, "paste", function() {
      var e = {
        preventDefault: function() {
          e._preventDefault = true;
        }
      }
      signal(cm, "paste", e);
      if (e._preventDefault)
        cm.state.ignorePaste = true;
        return;
      // Workaround for webkit bug https://bugs.webkit.org/show_bug.cgi?id=90206
      // Add a char to the end of textarea before paste occur so that
      // selection doesn't span to the end of textarea.
      if (webkit && !cm.state.fakedLastChar && !(new Date - cm.state.lastMiddleDown < 200)) {
        var start = d.input.selectionStart, end = d.input.selectionEnd;
        d.input.value += "$";
        d.input.selectionStart = start;
        d.input.selectionEnd = end;
        cm.state.fakedLastChar = true;
      }
      cm.state.pasteIncoming = true;
      fastPoll(cm);
    });

    function prepareCopy() {
      signal(cm, "copy");
      if (d.inaccurateSelection) {
        d.prevInput = "";
        d.inaccurateSelection = false;
        d.input.value = cm.getSelection();
        selectInput(d.input);
      }
    }
    on(d.input, "cut", prepareCopy);
    on(d.input, "copy", prepareCopy);

    // Needed to handle Tab key in KHTML
    if (khtml) on(d.sizer, "mouseup", function() {
        if (document.activeElement == d.input) d.input.blur();
        focusInput(cm);
    });
  }

  function eventInWidget(display, e) {
    for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {
      if (!n || n.ignoreEvents || n.parentNode == display.sizer && n != display.mover) return true;
    }
  }

  function posFromMouse(cm, e, liberal) {
    var display = cm.display;
    if (!liberal) {
      var target = e_target(e);
      if (target == display.scrollbarH || target == display.scrollbarH.firstChild ||
          target == display.scrollbarV || target == display.scrollbarV.firstChild ||
          target == display.scrollbarFiller || target == display.gutterFiller) return null;
    }
    var x, y, space = getRect(display.lineSpace);
    // Fails unpredictably on IE[67] when mouse is dragged around quickly.
    try { x = e.clientX; y = e.clientY; } catch (e) { return null; }
    return coordsChar(cm, x - space.left, y - space.top);
  }

  var lastClick, lastDoubleClick;
  function onMouseDown(e) {
    if (signalDOMEvent(this, e)) return;
    var cm = this, display = cm.display, doc = cm.doc, sel = doc.sel;
    sel.shift = e.shiftKey;

    if (eventInWidget(display, e)) {
      if (!webkit) {
        display.scroller.draggable = false;
        setTimeout(function(){display.scroller.draggable = true;}, 100);
      }
      return;
    }
    if (clickInGutter(cm, e)) return;
    var start = posFromMouse(cm, e);

    switch (e_button(e)) {
    case 3:
      if (captureMiddleClick) onContextMenu.call(cm, cm, e);
      return;
    case 2:
      if (webkit) cm.state.lastMiddleDown = +new Date;
      if (start) extendSelection(cm.doc, start);
      setTimeout(bind(focusInput, cm), 20);
      e_preventDefault(e);
      return;
    }
    // For button 1, if it was clicked inside the editor
    // (posFromMouse returning non-null), we have to adjust the
    // selection.
    if (!start) {if (e_target(e) == display.scroller) e_preventDefault(e); return;}

    if (!cm.state.focused) onFocus(cm);

    var now = +new Date, type = "single";
    if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) {
      type = "triple";
      e_preventDefault(e);
      setTimeout(bind(focusInput, cm), 20);
      selectLine(cm, start.line);
    } else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) {
      type = "double";
      lastDoubleClick = {time: now, pos: start};
      e_preventDefault(e);
      var word = findWordAt(getLine(doc, start.line).text, start);
      extendSelection(cm.doc, word.from, word.to);
    } else { lastClick = {time: now, pos: start}; }

    var last = start;
    if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) && !posEq(sel.from, sel.to) &&
        !posLess(start, sel.from) && !posLess(sel.to, start) && type == "single") {
      var dragEnd = operation(cm, function(e2) {
        if (webkit) display.scroller.draggable = false;
        cm.state.draggingText = false;
        off(document, "mouseup", dragEnd);
        off(display.scroller, "drop", dragEnd);
        if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) {
          e_preventDefault(e2);
          extendSelection(cm.doc, start);
          focusInput(cm);
        }
      });
      // Let the drag handler handle this.
      if (webkit) display.scroller.draggable = true;
      cm.state.draggingText = dragEnd;
      // IE's approach to draggable
      if (display.scroller.dragDrop) display.scroller.dragDrop();
      on(document, "mouseup", dragEnd);
      on(display.scroller, "drop", dragEnd);
      return;
    }
    e_preventDefault(e);
    if (type == "single") extendSelection(cm.doc, clipPos(doc, start));

    var startstart = sel.from, startend = sel.to, lastPos = start;

    function doSelect(cur) {
      if (posEq(lastPos, cur)) return;
      lastPos = cur;

      if (type == "single") {
        extendSelection(cm.doc, clipPos(doc, start), cur);
        return;
      }

      startstart = clipPos(doc, startstart);
      startend = clipPos(doc, startend);
      if (type == "double") {
        var word = findWordAt(getLine(doc, cur.line).text, cur);
        if (posLess(cur, startstart)) extendSelection(cm.doc, word.from, startend);
        else extendSelection(cm.doc, startstart, word.to);
      } else if (type == "triple") {
        if (posLess(cur, startstart)) extendSelection(cm.doc, startend, clipPos(doc, Pos(cur.line, 0)));
        else extendSelection(cm.doc, startstart, clipPos(doc, Pos(cur.line + 1, 0)));
      }
    }

    var editorSize = getRect(display.wrapper);
    // Used to ensure timeout re-tries don't fire when another extend
    // happened in the meantime (clearTimeout isn't reliable -- at
    // least on Chrome, the timeouts still happen even when cleared,
    // if the clear happens after their scheduled firing time).
    var counter = 0;

    function extend(e) {
      var curCount = ++counter;
      var cur = posFromMouse(cm, e, true);
      if (!cur) return;
      if (!posEq(cur, last)) {
        if (!cm.state.focused) onFocus(cm);
        last = cur;
        doSelect(cur);
        var visible = visibleLines(display, doc);
        if (cur.line >= visible.to || cur.line < visible.from)
          setTimeout(operation(cm, function(){if (counter == curCount) extend(e);}), 150);
      } else {
        var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0;
        if (outside) setTimeout(operation(cm, function() {
          if (counter != curCount) return;
          display.scroller.scrollTop += outside;
          extend(e);
        }), 50);
      }
    }

    function done(e) {
      counter = Infinity;
      e_preventDefault(e);
      focusInput(cm);
      off(document, "mousemove", move);
      off(document, "mouseup", up);
    }

    var move = operation(cm, function(e) {
      if (!ie && !e_button(e)) done(e);
      else extend(e);
    });
    var up = operation(cm, done);
    on(document, "mousemove", move);
    on(document, "mouseup", up);
  }

  function gutterEvent(cm, e, type, prevent, signalfn) {
    try { var mX = e.clientX, mY = e.clientY; }
    catch(e) { return false; }
    if (mX >= Math.floor(getRect(cm.display.gutters).right)) return false;
    if (prevent) e_preventDefault(e);

    var display = cm.display;
    var lineBox = getRect(display.lineDiv);

    if (mY > lineBox.bottom || !hasHandler(cm, type)) return e_defaultPrevented(e);
    mY -= lineBox.top - display.viewOffset;

    for (var i = 0; i < cm.options.gutters.length; ++i) {
      var g = display.gutters.childNodes[i];
      if (g && getRect(g).right >= mX) {
        var line = lineAtHeight(cm.doc, mY);
        var gutter = cm.options.gutters[i];
        signalfn(cm, type, cm, line, gutter, e);
        return e_defaultPrevented(e);
      }
    }
  }

  function contextMenuInGutter(cm, e) {
    if (!hasHandler(cm, "gutterContextMenu")) return false;
    return gutterEvent(cm, e, "gutterContextMenu", false, signal);
  }

  function clickInGutter(cm, e) {
    return gutterEvent(cm, e, "gutterClick", true, signalLater);
  }

  // Kludge to work around strange IE behavior where it'll sometimes
  // re-fire a series of drag-related events right after the drop (#1551)
  var lastDrop = 0;

  function onDrop(e) {
    var cm = this;
    if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e) || (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))))
      return;
    e_preventDefault(e);
    if (ie) lastDrop = +new Date;
    var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files;
    if (!pos || isReadOnly(cm)) return;
    if (files && files.length && window.FileReader && window.File) {
      var n = files.length, text = Array(n), read = 0;
      var loadFile = function(file, i) {
        var reader = new FileReader;
        reader.onload = function() {
          text[i] = reader.result;
          if (++read == n) {
            pos = clipPos(cm.doc, pos);
            makeChange(cm.doc, {from: pos, to: pos, text: splitLines(text.join("\n")), origin: "paste"}, "around");
          }
        };
        reader.readAsText(file);
      };
      for (var i = 0; i < n; ++i) loadFile(files[i], i);
    } else {
      // Don't do a replace if the drop happened inside of the selected text.
      if (cm.state.draggingText && !(posLess(pos, cm.doc.sel.from) || posLess(cm.doc.sel.to, pos))) {
        cm.state.draggingText(e);
        // Ensure the editor is re-focused
        setTimeout(bind(focusInput, cm), 20);
        return;
      }
      try {
        var text = e.dataTransfer.getData("Text");
        if (text) {
          var curFrom = cm.doc.sel.from, curTo = cm.doc.sel.to;
          setSelection(cm.doc, pos, pos);
          if (cm.state.draggingText) replaceRange(cm.doc, "", curFrom, curTo, "paste");
          cm.replaceSelection(text, null, "paste");
          focusInput(cm);
          onFocus(cm);
        }
      }
      catch(e){}
    }
  }

  function onDragStart(cm, e) {
    if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return; }
    if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) return;

    var txt = cm.getSelection();
    e.dataTransfer.setData("Text", txt);

    // Use dummy image instead of default browsers image.
    // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there.
    if (e.dataTransfer.setDragImage && !safari) {
      var img = elt("img", null, null, "position: fixed; left: 0; top: 0;");
      img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
      if (opera) {
        img.width = img.height = 1;
        cm.display.wrapper.appendChild(img);
        // Force a relayout, or Opera won't use our image for some obscure reason
        img._top = img.offsetTop;
      }
      e.dataTransfer.setDragImage(img, 0, 0);
      if (opera) img.parentNode.removeChild(img);
    }
  }

  function setScrollTop(cm, val) {
    if (Math.abs(cm.doc.scrollTop - val) < 2) return;
    cm.doc.scrollTop = val;
    if (!gecko) updateDisplay(cm, [], val);
    if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val;
    if (cm.display.scrollbarV.scrollTop != val) cm.display.scrollbarV.scrollTop = val;
    if (gecko) updateDisplay(cm, []);
    startWorker(cm, 100);
  }
  function setScrollLeft(cm, val, isScroller) {
    if (isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) return;
    val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth);
    cm.doc.scrollLeft = val;
    alignHorizontally(cm);
    if (cm.display.scroller.scrollLeft != val) cm.display.scroller.scrollLeft = val;
    if (cm.display.scrollbarH.scrollLeft != val) cm.display.scrollbarH.scrollLeft = val;
  }

  // Since the delta values reported on mouse wheel events are
  // unstandardized between browsers and even browser versions, and
  // generally horribly unpredictable, this code starts by measuring
  // the scroll effect that the first few mouse wheel events have,
  // and, from that, detects the way it can convert deltas to pixel
  // offsets afterwards.
  //
  // The reason we want to know the amount a wheel event will scroll
  // is that it gives us a chance to update the display before the
  // actual scrolling happens, reducing flickering.

  var wheelSamples = 0, wheelPixelsPerUnit = null;
  // Fill in a browser-detected starting value on browsers where we
  // know one. These don't have to be accurate -- the result of them
  // being wrong would just be a slight flicker on the first wheel
  // scroll (if it is large enough).
  if (ie) wheelPixelsPerUnit = -.53;
  else if (gecko) wheelPixelsPerUnit = 15;
  else if (chrome) wheelPixelsPerUnit = -.7;
  else if (safari) wheelPixelsPerUnit = -1/3;

  function onScrollWheel(cm, e) {
    var dx = e.wheelDeltaX, dy = e.wheelDeltaY;
    if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail;
    if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail;
    else if (dy == null) dy = e.wheelDelta;

    var display = cm.display, scroll = display.scroller;
    // Quit if there's nothing to scroll here
    if (!(dx && scroll.scrollWidth > scroll.clientWidth ||
          dy && scroll.scrollHeight > scroll.clientHeight)) return;

    // Webkit browsers on OS X abort momentum scrolls when the target
    // of the scroll event is removed from the scrollable element.
    // This hack (see related code in patchDisplay) makes sure the
    // element is kept around.
    if (dy && mac && webkit) {
      for (var cur = e.target; cur != scroll; cur = cur.parentNode) {
        if (cur.lineObj) {
          cm.display.currentWheelTarget = cur;
          break;
        }
      }
    }

    // On some browsers, horizontal scrolling will cause redraws to
    // happen before the gutter has been realigned, causing it to
    // wriggle around in a most unseemly way. When we have an
    // estimated pixels/delta value, we just handle horizontal
    // scrolling entirely here. It'll be slightly off from native, but
    // better than glitching out.
    if (dx && !gecko && !opera && wheelPixelsPerUnit != null) {
      if (dy)
        setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight)));
      setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth)));
      e_preventDefault(e);
      display.wheelStartX = null; // Abort measurement, if in progress
      return;
    }

    if (dy && wheelPixelsPerUnit != null) {
      var pixels = dy * wheelPixelsPerUnit;
      var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight;
      if (pixels < 0) top = Math.max(0, top + pixels - 50);
      else bot = Math.min(cm.doc.height, bot + pixels + 50);
      updateDisplay(cm, [], {top: top, bottom: bot});
    }

    if (wheelSamples < 20) {
      if (display.wheelStartX == null) {
        display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop;
        display.wheelDX = dx; display.wheelDY = dy;
        setTimeout(function() {
          if (display.wheelStartX == null) return;
          var movedX = scroll.scrollLeft - display.wheelStartX;
          var movedY = scroll.scrollTop - display.wheelStartY;
          var sample = (movedY && display.wheelDY && movedY / display.wheelDY) ||
            (movedX && display.wheelDX && movedX / display.wheelDX);
          display.wheelStartX = display.wheelStartY = null;
          if (!sample) return;
          wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1);
          ++wheelSamples;
        }, 200);
      } else {
        display.wheelDX += dx; display.wheelDY += dy;
      }
    }
  }

  function doHandleBinding(cm, bound, dropShift) {
    if (typeof bound == "string") {
      bound = commands[bound];
      if (!bound) return false;
    }
    // Ensure previous input has been read, so that the handler sees a
    // consistent view of the document
    if (cm.display.pollingFast && readInput(cm)) cm.display.pollingFast = false;
    var doc = cm.doc, prevShift = doc.sel.shift, done = false;
    try {
      if (isReadOnly(cm)) cm.state.suppressEdits = true;
      if (dropShift) doc.sel.shift = false;
      done = bound(cm) != Pass;
    } finally {
      doc.sel.shift = prevShift;
      cm.state.suppressEdits = false;
    }
    return done;
  }

  function allKeyMaps(cm) {
    var maps = cm.state.keyMaps.slice(0);
    if (cm.options.extraKeys) maps.push(cm.options.extraKeys);
    maps.push(cm.options.keyMap);
    return maps;
  }

  var maybeTransition;
  function handleKeyBinding(cm, e) {
    // Handle auto keymap transitions
    var startMap = getKeyMap(cm.options.keyMap), next = startMap.auto;
    clearTimeout(maybeTransition);
    if (next && !isModifierKey(e)) maybeTransition = setTimeout(function() {
      if (getKeyMap(cm.options.keyMap) == startMap) {
        cm.options.keyMap = (next.call ? next.call(null, cm) : next);
        keyMapChanged(cm);
      }
    }, 50);

    var name = keyName(e, true), handled = false;
    if (!name) return false;
    var keymaps = allKeyMaps(cm);

    if (e.shiftKey) {
      // First try to resolve full name (including 'Shift-'). Failing
      // that, see if there is a cursor-motion command (starting with
      // 'go') bound to the keyname without 'Shift-'.
      handled = lookupKey("Shift-" + name, keymaps, function(b) {return doHandleBinding(cm, b, true);})
             || lookupKey(name, keymaps, function(b) {
                  if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion)
                    return doHandleBinding(cm, b);
                });
    } else {
      handled = lookupKey(name, keymaps, function(b) { return doHandleBinding(cm, b); });
    }

    if (handled) {
      e_preventDefault(e);
      restartBlink(cm);
      if (ie_lt9) { e.oldKeyCode = e.keyCode; e.keyCode = 0; }
      signalLater(cm, "keyHandled", cm, name, e);
    }
    return handled;
  }

  function handleCharBinding(cm, e, ch) {
    var handled = lookupKey("'" + ch + "'", allKeyMaps(cm),
                            function(b) { return doHandleBinding(cm, b, true); });
    if (handled) {
      e_preventDefault(e);
      restartBlink(cm);
      signalLater(cm, "keyHandled", cm, "'" + ch + "'", e);
    }
    return handled;
  }

  var lastStoppedKey = null;
  function onKeyDown(e) {
    var cm = this;
    if (!cm.state.focused) onFocus(cm);
    if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;
    if (ie && e.keyCode == 27) e.returnValue = false;
    var code = e.keyCode;
    // IE does strange things with escape.
    cm.doc.sel.shift = code == 16 || e.shiftKey;
    // First give onKeyEvent option a chance to handle this.
    var handled = handleKeyBinding(cm, e);
    if (opera) {
      lastStoppedKey = handled ? code : null;
      // Opera has no cut event... we try to at least catch the key combo
      if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey))
        cm.replaceSelection("");
    }
  }

  function onKeyPress(e) {
    var cm = this;
    if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;
    var keyCode = e.keyCode, charCode = e.charCode;
    if (opera && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}
    if (((opera && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(cm, e)) return;
    var ch = String.fromCharCode(charCode == null ? keyCode : charCode);
    if (this.options.electricChars && this.doc.mode.electricChars &&
        this.options.smartIndent && !isReadOnly(this) &&
        this.doc.mode.electricChars.indexOf(ch) > -1)
      setTimeout(operation(cm, function() {indentLine(cm, cm.doc.sel.to.line, "smart");}), 75);
    if (handleCharBinding(cm, e, ch)) return;
    if (ie && !ie_lt9) cm.display.inputHasSelection = null;
    fastPoll(cm);
  }

  function onFocus(cm) {
    if (cm.options.readOnly == "nocursor") return;
    if (!cm.state.focused) {
      signal(cm, "focus", cm);
      cm.state.focused = true;
      if (cm.display.wrapper.className.search(/\bCodeMirror-focused\b/) == -1)
        cm.display.wrapper.className += " CodeMirror-focused";
      if (!cm.curOp) {
        resetInput(cm, true);
        if (webkit) setTimeout(bind(resetInput, cm, true), 0); // Issue #1730
      }
    }
    slowPoll(cm);
    restartBlink(cm);
  }
  function onBlur(cm) {
    if (cm.state.focused) {
      signal(cm, "blur", cm);
      cm.state.focused = false;
      cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-focused", "");
    }
    clearInterval(cm.display.blinker);
    setTimeout(function() {if (!cm.state.focused) cm.doc.sel.shift = false;}, 150);
  }

  var detectingSelectAll;
  function onContextMenu(cm, e) {
    if (signalDOMEvent(cm, e, "contextmenu")) return;
    var display = cm.display, sel = cm.doc.sel;
    if (eventInWidget(display, e) || contextMenuInGutter(cm, e)) return;

    var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop;
    if (!pos || opera) return; // Opera is difficult.
    if (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to))
      operation(cm, setSelection)(cm.doc, pos, pos);

    var oldCSS = display.input.style.cssText;
    display.inputDiv.style.position = "absolute";
    display.input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) +
      "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: white; outline: none;" +
      "border-width: 0; outline: none; overflow: hidden; opacity: .05; -ms-opacity: .05; filter: alpha(opacity=5);";
    focusInput(cm);
    resetInput(cm, true);
    // Adds "Select all" to context menu in FF
    if (posEq(sel.from, sel.to)) display.input.value = display.prevInput = " ";

    function prepareSelectAllHack() {
      if (display.input.selectionStart != null) {
        var extval = display.input.value = "\u200b" + (posEq(sel.from, sel.to) ? "" : display.input.value);
        display.prevInput = "\u200b";
        display.input.selectionStart = 1; display.input.selectionEnd = extval.length;
      }
    }
    function rehide() {
      display.inputDiv.style.position = "relative";
      display.input.style.cssText = oldCSS;
      if (ie_lt9) display.scrollbarV.scrollTop = display.scroller.scrollTop = scrollPos;
      slowPoll(cm);

      // Try to detect the user choosing select-all
      if (display.input.selectionStart != null) {
        if (!ie || ie_lt9) prepareSelectAllHack();
        clearTimeout(detectingSelectAll);
        var i = 0, poll = function(){
          if (display.prevInput == " " && display.input.selectionStart == 0)
            operation(cm, commands.selectAll)(cm);
          else if (i++ < 10) detectingSelectAll = setTimeout(poll, 500);
          else resetInput(cm);
        };
        detectingSelectAll = setTimeout(poll, 200);
      }
    }

    if (ie && !ie_lt9) prepareSelectAllHack();
    if (captureMiddleClick) {
      e_stop(e);
      var mouseup = function() {
        off(window, "mouseup", mouseup);
        setTimeout(rehide, 20);
      };
      on(window, "mouseup", mouseup);
    } else {
      setTimeout(rehide, 50);
    }
  }

  // UPDATING

  var changeEnd = CodeMirror.changeEnd = function(change) {
    if (!change.text) return change.to;
    return Pos(change.from.line + change.text.length - 1,
               lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0));
  };

  // Make sure a position will be valid after the given change.
  function clipPostChange(doc, change, pos) {
    if (!posLess(change.from, pos)) return clipPos(doc, pos);
    var diff = (change.text.length - 1) - (change.to.line - change.from.line);
    if (pos.line > change.to.line + diff) {
      var preLine = pos.line - diff, lastLine = doc.first + doc.size - 1;
      if (preLine > lastLine) return Pos(lastLine, getLine(doc, lastLine).text.length);
      return clipToLen(pos, getLine(doc, preLine).text.length);
    }
    if (pos.line == change.to.line + diff)
      return clipToLen(pos, lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0) +
                       getLine(doc, change.to.line).text.length - change.to.ch);
    var inside = pos.line - change.from.line;
    return clipToLen(pos, change.text[inside].length + (inside ? 0 : change.from.ch));
  }

  // Hint can be null|"end"|"start"|"around"|{anchor,head}
  function computeSelAfterChange(doc, change, hint) {
    if (hint && typeof hint == "object") // Assumed to be {anchor, head} object
      return {anchor: clipPostChange(doc, change, hint.anchor),
              head: clipPostChange(doc, change, hint.head)};

    if (hint == "start") return {anchor: change.from, head: change.from};

    var end = changeEnd(change);
    if (hint == "around") return {anchor: change.from, head: end};
    if (hint == "end") return {anchor: end, head: end};

    // hint is null, leave the selection alone as much as possible
    var adjustPos = function(pos) {
      if (posLess(pos, change.from)) return pos;
      if (!posLess(change.to, pos)) return end;

      var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch;
      if (pos.line == change.to.line) ch += end.ch - change.to.ch;
      return Pos(line, ch);
    };
    return {anchor: adjustPos(doc.sel.anchor), head: adjustPos(doc.sel.head)};
  }

  function filterChange(doc, change, update) {
    var obj = {
      canceled: false,
      from: change.from,
      to: change.to,
      text: change.text,
      origin: change.origin,
      cancel: function() { this.canceled = true; }
    };
    if (update) obj.update = function(from, to, text, origin) {
      if (from) this.from = clipPos(doc, from);
      if (to) this.to = clipPos(doc, to);
      if (text) this.text = text;
      if (origin !== undefined) this.origin = origin;
    };
    signal(doc, "beforeChange", doc, obj);
    if (doc.cm) signal(doc.cm, "beforeChange", doc.cm, obj);

    if (obj.canceled) return null;
    return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin};
  }

  // Replace the range from from to to by the strings in replacement.
  // change is a {from, to, text [, origin]} object
  function makeChange(doc, change, selUpdate, ignoreReadOnly) {
    if (doc.cm) {
      if (!doc.cm.curOp) return operation(doc.cm, makeChange)(doc, change, selUpdate, ignoreReadOnly);
      if (doc.cm.state.suppressEdits) return;
    }

    if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) {
      change = filterChange(doc, change, true);
      if (!change) return;
    }

    // Possibly split or suppress the update based on the presence
    // of read-only spans in its range.
    var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to);
    if (split) {
      for (var i = split.length - 1; i >= 1; --i)
        makeChangeNoReadonly(doc, {from: split[i].from, to: split[i].to, text: [""]});
      if (split.length)
        makeChangeNoReadonly(doc, {from: split[0].from, to: split[0].to, text: change.text}, selUpdate);
    } else {
      makeChangeNoReadonly(doc, change, selUpdate);
    }
  }

  function makeChangeNoReadonly(doc, change, selUpdate) {
    if (change.text.length == 1 && change.text[0] == "" && posEq(change.from, change.to)) return;
    var selAfter = computeSelAfterChange(doc, change, selUpdate);
    addToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN);

    makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change));
    var rebased = [];

    linkedDocs(doc, function(doc, sharedHist) {
      if (!sharedHist && indexOf(rebased, doc.history) == -1) {
        rebaseHist(doc.history, change);
        rebased.push(doc.history);
      }
      makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change));
    });
  }

  function makeChangeFromHistory(doc, type) {
    if (doc.cm && doc.cm.state.suppressEdits) return;

    var hist = doc.history;
    var event = (type == "undo" ? hist.done : hist.undone).pop();
    if (!event) return;

    var anti = {changes: [], anchorBefore: event.anchorAfter, headBefore: event.headAfter,
                anchorAfter: event.anchorBefore, headAfter: event.headBefore,
                generation: hist.generation};
    (type == "undo" ? hist.undone : hist.done).push(anti);
    hist.generation = event.generation || ++hist.maxGeneration;

    var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange");

    for (var i = event.changes.length - 1; i >= 0; --i) {
      var change = event.changes[i];
      change.origin = type;
      if (filter && !filterChange(doc, change, false)) {
        (type == "undo" ? hist.done : hist.undone).length = 0;
        return;
      }

      anti.changes.push(historyChangeFromChange(doc, change));

      var after = i ? computeSelAfterChange(doc, change, null)
                    : {anchor: event.anchorBefore, head: event.headBefore};
      makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change));
      var rebased = [];

      linkedDocs(doc, function(doc, sharedHist) {
        if (!sharedHist && indexOf(rebased, doc.history) == -1) {
          rebaseHist(doc.history, change);
          rebased.push(doc.history);
        }
        makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change));
      });
    }
  }

  function shiftDoc(doc, distance) {
    function shiftPos(pos) {return Pos(pos.line + distance, pos.ch);}
    doc.first += distance;
    if (doc.cm) regChange(doc.cm, doc.first, doc.first, distance);
    doc.sel.head = shiftPos(doc.sel.head); doc.sel.anchor = shiftPos(doc.sel.anchor);
    doc.sel.from = shiftPos(doc.sel.from); doc.sel.to = shiftPos(doc.sel.to);
  }

  function makeChangeSingleDoc(doc, change, selAfter, spans) {
    if (doc.cm && !doc.cm.curOp)
      return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans);

    if (change.to.line < doc.first) {
      shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line));
      return;
    }
    if (change.from.line > doc.lastLine()) return;

    // Clip the change to the size of this doc
    if (change.from.line < doc.first) {
      var shift = change.text.length - 1 - (doc.first - change.from.line);
      shiftDoc(doc, shift);
      change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch),
                text: [lst(change.text)], origin: change.origin};
    }
    var last = doc.lastLine();
    if (change.to.line > last) {
      change = {from: change.from, to: Pos(last, getLine(doc, last).text.length),
                text: [change.text[0]], origin: change.origin};
    }

    change.removed = getBetween(doc, change.from, change.to);

    if (!selAfter) selAfter = computeSelAfterChange(doc, change, null);
    if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans, selAfter);
    else updateDoc(doc, change, spans, selAfter);
  }

  function makeChangeSingleDocInEditor(cm, change, spans, selAfter) {
    var doc = cm.doc, display = cm.display, from = change.from, to = change.to;

    var recomputeMaxLength = false, checkWidthStart = from.line;
    if (!cm.options.lineWrapping) {
      checkWidthStart = lineNo(visualLine(doc, getLine(doc, from.line)));
      doc.iter(checkWidthStart, to.line + 1, function(line) {
        if (line == display.maxLine) {
          recomputeMaxLength = true;
          return true;
        }
      });
    }

    if (!posLess(doc.sel.head, change.from) && !posLess(change.to, doc.sel.head))
      cm.curOp.cursorActivity = true;

    updateDoc(doc, change, spans, selAfter, estimateHeight(cm));

    if (!cm.options.lineWrapping) {
      doc.iter(checkWidthStart, from.line + change.text.length, function(line) {
        var len = lineLength(doc, line);
        if (len > display.maxLineLength) {
          display.maxLine = line;
          display.maxLineLength = len;
          display.maxLineChanged = true;
          recomputeMaxLength = false;
        }
      });
      if (recomputeMaxLength) cm.curOp.updateMaxLine = true;
    }

    // Adjust frontier, schedule worker
    doc.frontier = Math.min(doc.frontier, from.line);
    startWorker(cm, 400);

    var lendiff = change.text.length - (to.line - from.line) - 1;
    // Remember that these lines changed, for updating the display
    regChange(cm, from.line, to.line + 1, lendiff);

    if (hasHandler(cm, "change")) {
      var changeObj = {from: from, to: to,
                       text: change.text,
                       removed: change.removed,
                       origin: change.origin};
      if (cm.curOp.textChanged) {
        for (var cur = cm.curOp.textChanged; cur.next; cur = cur.next) {}
        cur.next = changeObj;
      } else cm.curOp.textChanged = changeObj;
    }
  }

  function replaceRange(doc, code, from, to, origin) {
    if (!to) to = from;
    if (posLess(to, from)) { var tmp = to; to = from; from = tmp; }
    if (typeof code == "string") code = splitLines(code);
    makeChange(doc, {from: from, to: to, text: code, origin: origin}, null);
  }

  // POSITION OBJECT

  function Pos(line, ch) {
    if (!(this instanceof Pos)) return new Pos(line, ch);
    this.line = line; this.ch = ch;
  }
  CodeMirror.Pos = Pos;

  function posEq(a, b) {return a.line == b.line && a.ch == b.ch;}
  function posLess(a, b) {return a.line < b.line || (a.line == b.line && a.ch < b.ch);}
  function copyPos(x) {return Pos(x.line, x.ch);}

  // SELECTION

  function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1));}
  function clipPos(doc, pos) {
    if (pos.line < doc.first) return Pos(doc.first, 0);
    var last = doc.first + doc.size - 1;
    if (pos.line > last) return Pos(last, getLine(doc, last).text.length);
    return clipToLen(pos, getLine(doc, pos.line).text.length);
  }
  function clipToLen(pos, linelen) {
    var ch = pos.ch;
    if (ch == null || ch > linelen) return Pos(pos.line, linelen);
    else if (ch < 0) return Pos(pos.line, 0);
    else return pos;
  }
  function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size;}

  // If shift is held, this will move the selection anchor. Otherwise,
  // it'll set the whole selection.
  function extendSelection(doc, pos, other, bias) {
    if (doc.sel.shift || doc.sel.extend) {
      var anchor = doc.sel.anchor;
      if (other) {
        var posBefore = posLess(pos, anchor);
        if (posBefore != posLess(other, anchor)) {
          anchor = pos;
          pos = other;
        } else if (posBefore != posLess(pos, other)) {
          pos = other;
        }
      }
      setSelection(doc, anchor, pos, bias);
    } else {
      setSelection(doc, pos, other || pos, bias);
    }
    if (doc.cm) doc.cm.curOp.userSelChange = true;
  }

  function filterSelectionChange(doc, anchor, head) {
    var obj = {anchor: anchor, head: head};
    signal(doc, "beforeSelectionChange", doc, obj);
    if (doc.cm) signal(doc.cm, "beforeSelectionChange", doc.cm, obj);
    obj.anchor = clipPos(doc, obj.anchor); obj.head = clipPos(doc, obj.head);
    return obj;
  }

  // Update the selection. Last two args are only used by
  // updateDoc, since they have to be expressed in the line
  // numbers before the update.
  function setSelection(doc, anchor, head, bias, checkAtomic) {
    if (!checkAtomic && hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange")) {
      var filtered = filterSelectionChange(doc, anchor, head);
      head = filtered.head;
      anchor = filtered.anchor;
    }

    var sel = doc.sel;
    sel.goalColumn = null;
    if (bias == null) bias = posLess(head, sel.head) ? -1 : 1;
    // Skip over atomic spans.
    if (checkAtomic || !posEq(anchor, sel.anchor))
      anchor = skipAtomic(doc, anchor, bias, checkAtomic != "push");
    if (checkAtomic || !posEq(head, sel.head))
      head = skipAtomic(doc, head, bias, checkAtomic != "push");

    if (posEq(sel.anchor, anchor) && posEq(sel.head, head)) return;

    sel.anchor = anchor; sel.head = head;
    var inv = posLess(head, anchor);
    sel.from = inv ? head : anchor;
    sel.to = inv ? anchor : head;

    if (doc.cm)
      doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged =
        doc.cm.curOp.cursorActivity = true;

    signalLater(doc, "cursorActivity", doc);
  }

  function reCheckSelection(cm) {
    setSelection(cm.doc, cm.doc.sel.from, cm.doc.sel.to, null, "push");
  }

  function skipAtomic(doc, pos, bias, mayClear) {
    var flipped = false, curPos = pos;
    var dir = bias || 1;
    doc.cantEdit = false;
    search: for (;;) {
      var line = getLine(doc, curPos.line);
      if (line.markedSpans) {
        for (var i = 0; i < line.markedSpans.length; ++i) {
          var sp = line.markedSpans[i], m = sp.marker;
          if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) &&
              (sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) {
            if (mayClear) {
              signal(m, "beforeCursorEnter");
              if (m.explicitlyCleared) {
                if (!line.markedSpans) break;
                else {--i; continue;}
              }
            }
            if (!m.atomic) continue;
            var newPos = m.find()[dir < 0 ? "from" : "to"];
            if (posEq(newPos, curPos)) {
              newPos.ch += dir;
              if (newPos.ch < 0) {
                if (newPos.line > doc.first) newPos = clipPos(doc, Pos(newPos.line - 1));
                else newPos = null;
              } else if (newPos.ch > line.text.length) {
                if (newPos.line < doc.first + doc.size - 1) newPos = Pos(newPos.line + 1, 0);
                else newPos = null;
              }
              if (!newPos) {
                if (flipped) {
                  // Driven in a corner -- no valid cursor position found at all
                  // -- try again *with* clearing, if we didn't already
                  if (!mayClear) return skipAtomic(doc, pos, bias, true);
                  // Otherwise, turn off editing until further notice, and return the start of the doc
                  doc.cantEdit = true;
                  return Pos(doc.first, 0);
                }
                flipped = true; newPos = pos; dir = -dir;
              }
            }
            curPos = newPos;
            continue search;
          }
        }
      }
      return curPos;
    }
  }

  // SCROLLING

  function scrollCursorIntoView(cm) {
    var coords = scrollPosIntoView(cm, cm.doc.sel.head, cm.options.cursorScrollMargin);
    if (!cm.state.focused) return;
    var display = cm.display, box = getRect(display.sizer), doScroll = null;
    if (coords.top + box.top < 0) doScroll = true;
    else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false;
    if (doScroll != null && !phantom) {
      var hidden = display.cursor.style.display == "none";
      if (hidden) {
        display.cursor.style.display = "";
        display.cursor.style.left = coords.left + "px";
        display.cursor.style.top = (coords.top - display.viewOffset) + "px";
      }
      display.cursor.scrollIntoView(doScroll);
      if (hidden) display.cursor.style.display = "none";
    }
  }

  function scrollPosIntoView(cm, pos, margin) {
    if (margin == null) margin = 0;
    for (;;) {
      var changed = false, coords = cursorCoords(cm, pos);
      var scrollPos = calculateScrollPos(cm, coords.left, coords.top - margin, coords.left, coords.bottom + margin);
      var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft;
      if (scrollPos.scrollTop != null) {
        setScrollTop(cm, scrollPos.scrollTop);
        if (Math.abs(cm.doc.scrollTop - startTop) > 1) changed = true;
      }
      if (scrollPos.scrollLeft != null) {
        setScrollLeft(cm, scrollPos.scrollLeft);
        if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) changed = true;
      }
      if (!changed) return coords;
    }
  }

  function scrollIntoView(cm, x1, y1, x2, y2) {
    var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2);
    if (scrollPos.scrollTop != null) setScrollTop(cm, scrollPos.scrollTop);
    if (scrollPos.scrollLeft != null) setScrollLeft(cm, scrollPos.scrollLeft);
  }

  function calculateScrollPos(cm, x1, y1, x2, y2) {
    var display = cm.display, snapMargin = textHeight(cm.display);
    if (y1 < 0) y1 = 0;
    var screen = display.scroller.clientHeight - scrollerCutOff, screentop = display.scroller.scrollTop, result = {};
    var docBottom = cm.doc.height + paddingVert(display);
    var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin;
    if (y1 < screentop) {
      result.scrollTop = atTop ? 0 : y1;
    } else if (y2 > screentop + screen) {
      var newTop = Math.min(y1, (atBottom ? docBottom : y2) - screen);
      if (newTop != screentop) result.scrollTop = newTop;
    }

    var screenw = display.scroller.clientWidth - scrollerCutOff, screenleft = display.scroller.scrollLeft;
    x1 += display.gutters.offsetWidth; x2 += display.gutters.offsetWidth;
    var gutterw = display.gutters.offsetWidth;
    var atLeft = x1 < gutterw + 10;
    if (x1 < screenleft + gutterw || atLeft) {
      if (atLeft) x1 = 0;
      result.scrollLeft = Math.max(0, x1 - 10 - gutterw);
    } else if (x2 > screenw + screenleft - 3) {
      result.scrollLeft = x2 + 10 - screenw;
    }
    return result;
  }

  function updateScrollPos(cm, left, top) {
    cm.curOp.updateScrollPos = {scrollLeft: left == null ? cm.doc.scrollLeft : left,
                                scrollTop: top == null ? cm.doc.scrollTop : top};
  }

  function addToScrollPos(cm, left, top) {
    var pos = cm.curOp.updateScrollPos || (cm.curOp.updateScrollPos = {scrollLeft: cm.doc.scrollLeft, scrollTop: cm.doc.scrollTop});
    var scroll = cm.display.scroller;
    pos.scrollTop = Math.max(0, Math.min(scroll.scrollHeight - scroll.clientHeight, pos.scrollTop + top));
    pos.scrollLeft = Math.max(0, Math.min(scroll.scrollWidth - scroll.clientWidth, pos.scrollLeft + left));
  }

  // API UTILITIES

  function indentLine(cm, n, how, aggressive) {
    var doc = cm.doc;
    if (how == null) how = "add";
    if (how == "smart") {
      if (!cm.doc.mode.indent) how = "prev";
      else var state = getStateBefore(cm, n);
    }

    var tabSize = cm.options.tabSize;
    var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize);
    var curSpaceString = line.text.match(/^\s*/)[0], indentation;
    if (how == "smart") {
      indentation = cm.doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text);
      if (indentation == Pass) {
        if (!aggressive) return;
        how = "prev";
      }
    }
    if (how == "prev") {
      if (n > doc.first) indentation = countColumn(getLine(doc, n-1).text, null, tabSize);
      else indentation = 0;
    } else if (how == "add") {
      indentation = curSpace + cm.options.indentUnit;
    } else if (how == "subtract") {
      indentation = curSpace - cm.options.indentUnit;
    } else if (typeof how == "number") {
      indentation = curSpace + how;
    }
    indentation = Math.max(0, indentation);

    var indentString = "", pos = 0;
    if (cm.options.indentWithTabs)
      for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";}
    if (pos < indentation) indentString += spaceStr(indentation - pos);

    if (indentString != curSpaceString)
      replaceRange(cm.doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input");
    line.stateAfter = null;
  }

  function changeLine(cm, handle, op) {
    var no = handle, line = handle, doc = cm.doc;
    if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle));
    else no = lineNo(handle);
    if (no == null) return null;
    if (op(line, no)) regChange(cm, no, no + 1);
    else return null;
    return line;
  }

  function findPosH(doc, pos, dir, unit, visually) {
    var line = pos.line, ch = pos.ch, origDir = dir;
    var lineObj = getLine(doc, line);
    var possible = true;
    function findNextLine() {
      var l = line + dir;
      if (l < doc.first || l >= doc.first + doc.size) return (possible = false);
      line = l;
      return lineObj = getLine(doc, l);
    }
    function moveOnce(boundToLine) {
      var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true);
      if (next == null) {
        if (!boundToLine && findNextLine()) {
          if (visually) ch = (dir < 0 ? lineRight : lineLeft)(lineObj);
          else ch = dir < 0 ? lineObj.text.length : 0;
        } else return (possible = false);
      } else ch = next;
      return true;
    }

    if (unit == "char") moveOnce();
    else if (unit == "column") moveOnce(true);
    else if (unit == "word" || unit == "group") {
      var sawType = null, group = unit == "group";
      for (var first = true;; first = false) {
        if (dir < 0 && !moveOnce(!first)) break;
        var cur = lineObj.text.charAt(ch) || "\n";
        var type = isWordChar(cur) ? "w"
          : !group ? null
          : /\s/.test(cur) ? null
          : "p";
        if (sawType && sawType != type) {
          if (dir < 0) {dir = 1; moveOnce();}
          break;
        }
        if (type) sawType = type;
        if (dir > 0 && !moveOnce(!first)) break;
      }
    }
    var result = skipAtomic(doc, Pos(line, ch), origDir, true);
    if (!possible) result.hitSide = true;
    return result;
  }

  function findPosV(cm, pos, dir, unit) {
    var doc = cm.doc, x = pos.left, y;
    if (unit == "page") {
      var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight);
      y = pos.top + dir * (pageSize - (dir < 0 ? 1.5 : .5) * textHeight(cm.display));
    } else if (unit == "line") {
      y = dir > 0 ? pos.bottom + 3 : pos.top - 3;
    }
    for (;;) {
      var target = coordsChar(cm, x, y);
      if (!target.outside) break;
      if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break; }
      y += dir * 5;
    }
    return target;
  }

  function findWordAt(line, pos) {
    var start = pos.ch, end = pos.ch;
    if (line) {
      if ((pos.xRel < 0 || end == line.length) && start) --start; else ++end;
      var startChar = line.charAt(start);
      var check = isWordChar(startChar) ? isWordChar
        : /\s/.test(startChar) ? function(ch) {return /\s/.test(ch);}
        : function(ch) {return !/\s/.test(ch) && !isWordChar(ch);};
      while (start > 0 && check(line.charAt(start - 1))) --start;
      while (end < line.length && check(line.charAt(end))) ++end;
    }
    return {from: Pos(pos.line, start), to: Pos(pos.line, end)};
  }

  function selectLine(cm, line) {
    extendSelection(cm.doc, Pos(line, 0), clipPos(cm.doc, Pos(line + 1, 0)));
  }

  // PROTOTYPE

  // The publicly visible API. Note that operation(null, f) means
  // 'wrap f in an operation, performed on its `this` parameter'

  CodeMirror.prototype = {
    constructor: CodeMirror,
    focus: function(){window.focus(); focusInput(this); onFocus(this); fastPoll(this);},

    setOption: function(option, value) {
      var options = this.options, old = options[option];
      if (options[option] == value && option != "mode") return;
      options[option] = value;
      if (optionHandlers.hasOwnProperty(option))
        operation(this, optionHandlers[option])(this, value, old);
    },

    getOption: function(option) {return this.options[option];},
    getDoc: function() {return this.doc;},

    addKeyMap: function(map, bottom) {
      this.state.keyMaps[bottom ? "push" : "unshift"](map);
    },
    removeKeyMap: function(map) {
      var maps = this.state.keyMaps;
      for (var i = 0; i < maps.length; ++i)
        if (maps[i] == map || (typeof maps[i] != "string" && maps[i].name == map)) {
          maps.splice(i, 1);
          return true;
        }
    },

    addOverlay: operation(null, function(spec, options) {
      var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec);
      if (mode.startState) throw new Error("Overlays may not be stateful.");
      this.state.overlays.push({mode: mode, modeSpec: spec, opaque: options && options.opaque});
      this.state.modeGen++;
      regChange(this);
    }),
    removeOverlay: operation(null, function(spec) {
      var overlays = this.state.overlays;
      for (var i = 0; i < overlays.length; ++i) {
        var cur = overlays[i].modeSpec;
        if (cur == spec || typeof spec == "string" && cur.name == spec) {
          overlays.splice(i, 1);
          this.state.modeGen++;
          regChange(this);
          return;
        }
      }
    }),

    indentLine: operation(null, function(n, dir, aggressive) {
      if (typeof dir != "string" && typeof dir != "number") {
        if (dir == null) dir = this.options.smartIndent ? "smart" : "prev";
        else dir = dir ? "add" : "subtract";
      }
      if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive);
    }),
    indentSelection: operation(null, function(how) {
      var sel = this.doc.sel;
      if (posEq(sel.from, sel.to)) return indentLine(this, sel.from.line, how);
      var e = sel.to.line - (sel.to.ch ? 0 : 1);
      for (var i = sel.from.line; i <= e; ++i) indentLine(this, i, how);
    }),

    // Fetch the parser token for a given character. Useful for hacks
    // that want to inspect the mode state (say, for completion).
    getTokenAt: function(pos, precise) {
      var doc = this.doc;
      pos = clipPos(doc, pos);
      var state = getStateBefore(this, pos.line, precise), mode = this.doc.mode;
      var line = getLine(doc, pos.line);
      var stream = new StringStream(line.text, this.options.tabSize);
      while (stream.pos < pos.ch && !stream.eol()) {
        stream.start = stream.pos;
        var style = mode.token(stream, state);
      }
      return {start: stream.start,
              end: stream.pos,
              string: stream.current(),
              className: style || null, // Deprecated, use 'type' instead
              type: style || null,
              state: state};
    },

    getTokenTypeAt: function(pos) {
      pos = clipPos(this.doc, pos);
      var styles = getLineStyles(this, getLine(this.doc, pos.line));
      var before = 0, after = (styles.length - 1) / 2, ch = pos.ch;
      if (ch == 0) return styles[2];
      for (;;) {
        var mid = (before + after) >> 1;
        if ((mid ? styles[mid * 2 - 1] : 0) >= ch) after = mid;
        else if (styles[mid * 2 + 1] < ch) before = mid + 1;
        else return styles[mid * 2 + 2];
      }
    },

    getLineStyles: function(line) {
        return getLineStyles(this, getLine(this.doc, line));
    },

    getModeAt: function(pos) {
      var mode = this.doc.mode;
      if (!mode.innerMode) return mode;
      return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode;
    },

    getHelper: function(pos, type) {
      if (!helpers.hasOwnProperty(type)) return;
      var help = helpers[type], mode = this.getModeAt(pos);
      return mode[type] && help[mode[type]] ||
        mode.helperType && help[mode.helperType] ||
        help[mode.name];
    },

    getStateAfter: function(line, precise) {
      var doc = this.doc;
      line = clipLine(doc, line == null ? doc.first + doc.size - 1: line);
      return getStateBefore(this, line + 1, precise);
    },

    cursorCoords: function(start, mode) {
      var pos, sel = this.doc.sel;
      if (start == null) pos = sel.head;
      else if (typeof start == "object") pos = clipPos(this.doc, start);
      else pos = start ? sel.from : sel.to;
      return cursorCoords(this, pos, mode || "page");
    },

    charCoords: function(pos, mode) {
      return charCoords(this, clipPos(this.doc, pos), mode || "page");
    },

    coordsChar: function(coords, mode) {
      coords = fromCoordSystem(this, coords, mode || "page");
      return coordsChar(this, coords.left, coords.top);
    },

    lineAtHeight: function(height, mode) {
      height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top;
      return lineAtHeight(this.doc, height + this.display.viewOffset);
    },
    heightAtLine: function(line, mode) {
      var end = false, last = this.doc.first + this.doc.size - 1;
      if (line < this.doc.first) line = this.doc.first;
      else if (line > last) { line = last; end = true; }
      var lineObj = getLine(this.doc, line);
      return intoCoordSystem(this, getLine(this.doc, line), {top: 0, left: 0}, mode || "page").top +
        (end ? lineObj.height : 0);
    },

    defaultTextHeight: function() { return textHeight(this.display); },
    defaultCharWidth: function() { return charWidth(this.display); },

    setGutterMarker: operation(null, function(line, gutterID, value) {
      return changeLine(this, line, function(line) {
        var markers = line.gutterMarkers || (line.gutterMarkers = {});
        markers[gutterID] = value;
        if (!value && isEmpty(markers)) line.gutterMarkers = null;
        return true;
      });
    }),

    clearGutter: operation(null, function(gutterID) {
      var cm = this, doc = cm.doc, i = doc.first;
      doc.iter(function(line) {
        if (line.gutterMarkers && line.gutterMarkers[gutterID]) {
          line.gutterMarkers[gutterID] = null;
          regChange(cm, i, i + 1);
          if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null;
        }
        ++i;
      });
    }),

    addLineClass: operation(null, function(handle, where, cls) {
      return changeLine(this, handle, function(line) {
        var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass";
        if (!line[prop]) line[prop] = cls;
        else if (new RegExp("(?:^|\\s)" + cls + "(?:$|\\s)").test(line[prop])) return false;
        else line[prop] += " " + cls;
        return true;
      });
    }),

    removeLineClass: operation(null, function(handle, where, cls) {
      return changeLine(this, handle, function(line) {
        var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass";
        var cur = line[prop];
        if (!cur) return false;
        else if (cls == null) line[prop] = null;
        else {
          var found = cur.match(new RegExp("(?:^|\\s+)" + cls + "(?:$|\\s+)"));
          if (!found) return false;
          var end = found.index + found[0].length;
          line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null;
        }
        return true;
      });
    }),

    addLineWidget: operation(null, function(handle, node, options) {
      return addLineWidget(this, handle, node, options);
    }),

    removeLineWidget: function(widget) { widget.clear(); },

    lineInfo: function(line) {
      if (typeof line == "number") {
        if (!isLine(this.doc, line)) return null;
        var n = line;
        line = getLine(this.doc, line);
        if (!line) return null;
      } else {
        var n = lineNo(line);
        if (n == null) return null;
      }
      return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers,
              textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass,
              widgets: line.widgets};
    },

    getViewport: function() { return {from: this.display.showingFrom, to: this.display.showingTo};},

    addWidget: function(pos, node, scroll, vert, horiz) {
      var display = this.display;
      pos = cursorCoords(this, clipPos(this.doc, pos));
      var top = pos.bottom, left = pos.left;
      node.style.position = "absolute";
      display.sizer.appendChild(node);
      if (vert == "over") {
        top = pos.top;
      } else if (vert == "above" || vert == "near") {
        var vspace = Math.max(display.wrapper.clientHeight, this.doc.height),
        hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth);
        // Default to positioning above (if specified and possible); otherwise default to positioning below
        if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight)
          top = pos.top - node.offsetHeight;
        else if (pos.bottom + node.offsetHeight <= vspace)
          top = pos.bottom;
        if (left + node.offsetWidth > hspace)
          left = hspace - node.offsetWidth;
      }
      node.style.top = top + "px";
      node.style.left = node.style.right = "";
      if (horiz == "right") {
        left = display.sizer.clientWidth - node.offsetWidth;
        node.style.right = "0px";
      } else {
        if (horiz == "left") left = 0;
        else if (horiz == "middle") left = (display.sizer.clientWidth - node.offsetWidth) / 2;
        node.style.left = left + "px";
      }
      if (scroll)
        scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight);
    },

    triggerOnKeyDown: operation(null, onKeyDown),

    execCommand: function(cmd) {return commands[cmd](this);},

    findPosH: function(from, amount, unit, visually) {
      var dir = 1;
      if (amount < 0) { dir = -1; amount = -amount; }
      for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) {
        cur = findPosH(this.doc, cur, dir, unit, visually);
        if (cur.hitSide) break;
      }
      return cur;
    },

    moveH: operation(null, function(dir, unit) {
      var sel = this.doc.sel, pos;
      if (sel.shift || sel.extend || posEq(sel.from, sel.to))
        pos = findPosH(this.doc, sel.head, dir, unit, this.options.rtlMoveVisually);
      else
        pos = dir < 0 ? sel.from : sel.to;
      extendSelection(this.doc, pos, pos, dir);
    }),

    deleteH: operation(null, function(dir, unit) {
      var sel = this.doc.sel;
      if (!posEq(sel.from, sel.to)) replaceRange(this.doc, "", sel.from, sel.to, "+delete");
      else replaceRange(this.doc, "", sel.from, findPosH(this.doc, sel.head, dir, unit, false), "+delete");
      this.curOp.userSelChange = true;
    }),

    findPosV: function(from, amount, unit, goalColumn) {
      var dir = 1, x = goalColumn;
      if (amount < 0) { dir = -1; amount = -amount; }
      for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) {
        var coords = cursorCoords(this, cur, "div");
        if (x == null) x = coords.left;
        else coords.left = x;
        cur = findPosV(this, coords, dir, unit);
        if (cur.hitSide) break;
      }
      return cur;
    },

    moveV: operation(null, function(dir, unit) {
      var sel = this.doc.sel;
      var pos = cursorCoords(this, sel.head, "div");
      if (sel.goalColumn != null) pos.left = sel.goalColumn;
      var target = findPosV(this, pos, dir, unit);
      if (unit == "page") addToScrollPos(this, 0, charCoords(this, target, "div").top - pos.top);
      extendSelection(this.doc, target, target, dir);
      sel.goalColumn = pos.left;

      if (target.hitSide) {
        signal(this, "hitSide", this, dir == -1 ? "top" : "bottom");
      }
    }),

    toggleOverwrite: function(value) {
      if (value != null && value == this.state.overwrite) return;
      if (this.state.overwrite = !this.state.overwrite)
        this.display.cursor.className += " CodeMirror-overwrite";
      else
        this.display.cursor.className = this.display.cursor.className.replace(" CodeMirror-overwrite", "");
    },
    hasFocus: function() { return this.state.focused; },

    scrollTo: operation(null, function(x, y) {
      updateScrollPos(this, x, y);
    }),
    getScrollInfo: function() {
      var scroller = this.display.scroller, co = scrollerCutOff;
      return {left: scroller.scrollLeft, top: scroller.scrollTop,
              height: scroller.scrollHeight - co, width: scroller.scrollWidth - co,
              clientHeight: scroller.clientHeight - co, clientWidth: scroller.clientWidth - co};
    },

    scrollIntoView: operation(null, function(pos, margin) {
      if (typeof pos == "number") pos = Pos(pos, 0);
      if (!margin) margin = 0;
      var coords = pos;

      if (!pos || pos.line != null) {
        this.curOp.scrollToPos = pos ? clipPos(this.doc, pos) : this.doc.sel.head;
        this.curOp.scrollToPosMargin = margin;
        coords = cursorCoords(this, this.curOp.scrollToPos);
      }
      var sPos = calculateScrollPos(this, coords.left, coords.top - margin, coords.right, coords.bottom + margin);
      updateScrollPos(this, sPos.scrollLeft, sPos.scrollTop);
    }),

    setSize: operation(null, function(width, height) {
      function interpret(val) {
        return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val;
      }
      if (width != null) this.display.wrapper.style.width = interpret(width);
      if (height != null) this.display.wrapper.style.height = interpret(height);
      if (this.options.lineWrapping)
        this.display.measureLineCache.length = this.display.measureLineCachePos = 0;
      this.curOp.forceUpdate = true;
    }),

    operation: function(f){return runInOp(this, f);},

    refresh: operation(null, function() {
      var badHeight = this.display.cachedTextHeight == null;
      clearCaches(this);
      updateScrollPos(this, this.doc.scrollLeft, this.doc.scrollTop);
      regChange(this);
      if (badHeight) estimateLineHeights(this);
    }),

    swapDoc: operation(null, function(doc) {
      var old = this.doc;
      old.cm = null;
      attachDoc(this, doc);
      clearCaches(this);
      resetInput(this, true);
      updateScrollPos(this, doc.scrollLeft, doc.scrollTop);
      return old;
    }),

    getInputField: function(){return this.display.input;},
    getWrapperElement: function(){return this.display.wrapper;},
    getScrollerElement: function(){return this.display.scroller;},
    getGutterElement: function(){return this.display.gutters;}
  };
  eventMixin(CodeMirror);

  // OPTION DEFAULTS

  var optionHandlers = CodeMirror.optionHandlers = {};

  // The default configuration options.
  var defaults = CodeMirror.defaults = {};

  function option(name, deflt, handle, notOnInit) {
    CodeMirror.defaults[name] = deflt;
    if (handle) optionHandlers[name] =
      notOnInit ? function(cm, val, old) {if (old != Init) handle(cm, val, old);} : handle;
  }

  var Init = CodeMirror.Init = {toString: function(){return "CodeMirror.Init";}};

  // These two are, on init, called from the constructor because they
  // have to be initialized before the editor can start at all.
  option("value", "", function(cm, val) {
    cm.setValue(val);
  }, true);
  option("mode", null, function(cm, val) {
    cm.doc.modeOption = val;
    loadMode(cm);
  }, true);

  option("indentUnit", 2, loadMode, true);
  option("indentWithTabs", false);
  option("smartIndent", true);
  option("tabSize", 4, function(cm) {
    loadMode(cm);
    clearCaches(cm);
    regChange(cm);
  }, true);
  option("electricChars", true);
  option("rtlMoveVisually", !windows);

  option("theme", "default", function(cm) {
    themeChanged(cm);
    guttersChanged(cm);
  }, true);
  option("keyMap", "default", keyMapChanged);
  option("extraKeys", null);

  option("onKeyEvent", null);
  option("onDragEvent", null);

  option("lineWrapping", false, wrappingChanged, true);
  option("gutters", [], function(cm) {
    setGuttersForLineNumbers(cm.options);
    guttersChanged(cm);
  }, true);
  option("fixedGutter", true, function(cm, val) {
    cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0";
    cm.refresh();
  }, true);
  option("coverGutterNextToScrollbar", false, updateScrollbars, true);
  option("lineNumbers", false, function(cm) {
    setGuttersForLineNumbers(cm.options);
    guttersChanged(cm);
  }, true);
  option("firstLineNumber", 1, guttersChanged, true);
  option("lineNumberFormatter", function(integer) {return integer;}, guttersChanged, true);
  option("showCursorWhenSelecting", false, updateSelection, true);

  option("readOnly", false, function(cm, val) {
    if (val == "nocursor") {onBlur(cm); cm.display.input.blur();}
    else if (!val) resetInput(cm, true);
  });
  option("dragDrop", true);

  option("cursorBlinkRate", 530);
  option("cursorScrollMargin", 0);
  option("cursorHeight", 1);
  option("workTime", 100);
  option("workDelay", 100);
  option("flattenSpans", true);
  option("pollInterval", 100);
  option("undoDepth", 40, function(cm, val){cm.doc.history.undoDepth = val;});
  option("historyEventDelay", 500);
  option("viewportMargin", 10, function(cm){cm.refresh();}, true);
  option("maxHighlightLength", 10000, function(cm){loadMode(cm); cm.refresh();}, true);
  option("crudeMeasuringFrom", 10000);
  option("moveInputWithCursor", true, function(cm, val) {
    if (!val) cm.display.inputDiv.style.top = cm.display.inputDiv.style.left = 0;
  });

  option("tabindex", null, function(cm, val) {
    cm.display.input.tabIndex = val || "";
  });
  option("autofocus", null);

  // MODE DEFINITION AND QUERYING

  // Known modes, by name and by MIME
  var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {};

  CodeMirror.defineMode = function(name, mode) {
    if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name;
    if (arguments.length > 2) {
      mode.dependencies = [];
      for (var i = 2; i < arguments.length; ++i) mode.dependencies.push(arguments[i]);
    }
    modes[name] = mode;
  };

  CodeMirror.defineMIME = function(mime, spec) {
    mimeModes[mime] = spec;
  };

  CodeMirror.resolveMode = function(spec) {
    if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) {
      spec = mimeModes[spec];
    } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) {
      var found = mimeModes[spec.name];
      spec = createObj(found, spec);
      spec.name = found.name;
    } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) {
      return CodeMirror.resolveMode("application/xml");
    }
    if (typeof spec == "string") return {name: spec};
    else return spec || {name: "null"};
  };

  CodeMirror.getMode = function(options, spec) {
    var spec = CodeMirror.resolveMode(spec);
    var mfactory = modes[spec.name];
    if (!mfactory) return CodeMirror.getMode(options, "text/plain");
    var modeObj = mfactory(options, spec);
    if (modeExtensions.hasOwnProperty(spec.name)) {
      var exts = modeExtensions[spec.name];
      for (var prop in exts) {
        if (!exts.hasOwnProperty(prop)) continue;
        if (modeObj.hasOwnProperty(prop)) modeObj["_" + prop] = modeObj[prop];
        modeObj[prop] = exts[prop];
      }
    }
    modeObj.name = spec.name;

    return modeObj;
  };

  CodeMirror.defineMode("null", function() {
    return {token: function(stream) {stream.skipToEnd();}};
  });
  CodeMirror.defineMIME("text/plain", "null");

  var modeExtensions = CodeMirror.modeExtensions = {};
  CodeMirror.extendMode = function(mode, properties) {
    var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {});
    copyObj(properties, exts);
  };

  // EXTENSIONS

  CodeMirror.defineExtension = function(name, func) {
    CodeMirror.prototype[name] = func;
  };
  CodeMirror.defineDocExtension = function(name, func) {
    Doc.prototype[name] = func;
  };
  CodeMirror.defineOption = option;

  var initHooks = [];
  CodeMirror.defineInitHook = function(f) {initHooks.push(f);};

  var helpers = CodeMirror.helpers = {};
  CodeMirror.registerHelper = function(type, name, value) {
    if (!helpers.hasOwnProperty(type)) helpers[type] = CodeMirror[type] = {};
    helpers[type][name] = value;
  };

  // UTILITIES

  CodeMirror.isWordChar = isWordChar;

  // MODE STATE HANDLING

  // Utility functions for working with state. Exported because modes
  // sometimes need to do this.
  function copyState(mode, state) {
    if (state === true) return state;
    if (mode.copyState) return mode.copyState(state);
    var nstate = {};
    for (var n in state) {
      var val = state[n];
      if (val instanceof Array) val = val.concat([]);
      nstate[n] = val;
    }
    return nstate;
  }
  CodeMirror.copyState = copyState;

  function startState(mode, a1, a2) {
    return mode.startState ? mode.startState(a1, a2) : true;
  }
  CodeMirror.startState = startState;

  CodeMirror.innerMode = function(mode, state) {
    while (mode.innerMode) {
      var info = mode.innerMode(state);
      if (!info || info.mode == mode) break;
      state = info.state;
      mode = info.mode;
    }
    return info || {mode: mode, state: state};
  };

  // STANDARD COMMANDS

  var commands = CodeMirror.commands = {
    selectAll: function(cm) {cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()));},
    killLine: function(cm) {
      var from = cm.getCursor(true), to = cm.getCursor(false), sel = !posEq(from, to);
      if (!sel && cm.getLine(from.line).length == from.ch)
        cm.replaceRange("", from, Pos(from.line + 1, 0), "+delete");
      else cm.replaceRange("", from, sel ? to : Pos(from.line), "+delete");
    },
    deleteLine: function(cm) {
      var l = cm.getCursor().line;
      cm.replaceRange("", Pos(l, 0), Pos(l), "+delete");
    },
    delLineLeft: function(cm) {
      var cur = cm.getCursor();
      cm.replaceRange("", Pos(cur.line, 0), cur, "+delete");
    },
    undo: function(cm) {cm.undo();},
    redo: function(cm) {cm.redo();},
    goDocStart: function(cm) {cm.extendSelection(Pos(cm.firstLine(), 0));},
    goDocEnd: function(cm) {cm.extendSelection(Pos(cm.lastLine()));},
    goLineStart: function(cm) {
      cm.extendSelection(lineStart(cm, cm.getCursor().line));
    },
    goLineStartSmart: function(cm) {
      var cur = cm.getCursor(), start = lineStart(cm, cur.line);
      var line = cm.getLineHandle(start.line);
      var order = getOrder(line);
      if (!order || order[0].level == 0) {
        var firstNonWS = Math.max(0, line.text.search(/\S/));
        var inWS = cur.line == start.line && cur.ch <= firstNonWS && cur.ch;
        cm.extendSelection(Pos(start.line, inWS ? 0 : firstNonWS));
      } else cm.extendSelection(start);
    },
    goLineEnd: function(cm) {
      cm.extendSelection(lineEnd(cm, cm.getCursor().line));
    },
    goLineRight: function(cm) {
      var top = cm.charCoords(cm.getCursor(), "div").top + 5;
      cm.extendSelection(cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div"));
    },
    goLineLeft: function(cm) {
      var top = cm.charCoords(cm.getCursor(), "div").top + 5;
      cm.extendSelection(cm.coordsChar({left: 0, top: top}, "div"));
    },
    goLineUp: function(cm) {cm.moveV(-1, "line");},
    goLineDown: function(cm) {cm.moveV(1, "line");},
    goPageUp: function(cm) {cm.moveV(-1, "page");},
    goPageDown: function(cm) {cm.moveV(1, "page");},
    goCharLeft: function(cm) {cm.moveH(-1, "char");},
    goCharRight: function(cm) {cm.moveH(1, "char");},
    goColumnLeft: function(cm) {cm.moveH(-1, "column");},
    goColumnRight: function(cm) {cm.moveH(1, "column");},
    goWordLeft: function(cm) {cm.moveH(-1, "word");},
    goGroupRight: function(cm) {cm.moveH(1, "group");},
    goGroupLeft: function(cm) {cm.moveH(-1, "group");},
    goWordRight: function(cm) {cm.moveH(1, "word");},
    delCharBefore: function(cm) {cm.deleteH(-1, "char");},
    delCharAfter: function(cm) {cm.deleteH(1, "char");},
    delWordBefore: function(cm) {cm.deleteH(-1, "word");},
    delWordAfter: function(cm) {cm.deleteH(1, "word");},
    delGroupBefore: function(cm) {cm.deleteH(-1, "group");},
    delGroupAfter: function(cm) {cm.deleteH(1, "group");},
    indentAuto: function(cm) {cm.indentSelection("smart");},
    indentMore: function(cm) {cm.indentSelection("add");},
    indentLess: function(cm) {cm.indentSelection("subtract");},
    insertTab: function(cm) {cm.replaceSelection("\t", "end", "+input");},
    defaultTab: function(cm) {
      if (cm.somethingSelected()) cm.indentSelection("add");
      else cm.replaceSelection("\t", "end", "+input");
    },
    transposeChars: function(cm) {
      var cur = cm.getCursor(), line = cm.getLine(cur.line);
      if (cur.ch > 0 && cur.ch < line.length - 1)
        cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1),
                        Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1));
    },
    newlineAndIndent: function(cm) {
      operation(cm, function() {
        cm.replaceSelection("\n", "end", "+input");
        cm.indentLine(cm.getCursor().line, null, true);
      })();
    },
    toggleOverwrite: function(cm) {cm.toggleOverwrite();}
  };

  // STANDARD KEYMAPS

  var keyMap = CodeMirror.keyMap = {};
  keyMap.basic = {
    "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
    "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
    "Delete": "delCharAfter", "Backspace": "delCharBefore", "Tab": "defaultTab", "Shift-Tab": "indentAuto",
    "Enter": "newlineAndIndent", "Insert": "toggleOverwrite"
  };
  // Note that the save and find-related commands aren't defined by
  // default. Unknown commands are simply ignored.
  keyMap.pcDefault = {
    "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",
    "Ctrl-Home": "goDocStart", "Alt-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd",
    "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
    "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find",
    "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
    "Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
    fallthrough: "basic"
  };
  keyMap.macDefault = {
    "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
    "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft",
    "Alt-Right": "goGroupRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "Alt-Backspace": "delGroupBefore",
    "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find",
    "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
    "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delLineLeft",
    fallthrough: ["basic", "emacsy"]
  };
  keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;
  keyMap.emacsy = {
    "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown",
    "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
    "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore",
    "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars"
  };

  // KEYMAP DISPATCH

  function getKeyMap(val) {
    if (typeof val == "string") return keyMap[val];
    else return val;
  }

  function lookupKey(name, maps, handle) {
    function lookup(map) {
      map = getKeyMap(map);
      var found = map[name];
      if (found === false) return "stop";
      if (found != null && handle(found)) return true;
      if (map.nofallthrough) return "stop";

      var fallthrough = map.fallthrough;
      if (fallthrough == null) return false;
      if (Object.prototype.toString.call(fallthrough) != "[object Array]")
        return lookup(fallthrough);
      for (var i = 0, e = fallthrough.length; i < e; ++i) {
        var done = lookup(fallthrough[i]);
        if (done) return done;
      }
      return false;
    }

    for (var i = 0; i < maps.length; ++i) {
      var done = lookup(maps[i]);
      if (done) return done != "stop";
    }
  }
  function isModifierKey(event) {
    var name = keyNames[event.keyCode];
    return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod";
  }
  function keyName(event, noShift) {
    if (opera && event.keyCode == 34 && event["char"]) return false;
    var name = keyNames[event.keyCode];
    if (name == null || event.altGraphKey) return false;
    if (event.altKey) name = "Alt-" + name;
    if (flipCtrlCmd ? event.metaKey : event.ctrlKey) name = "Ctrl-" + name;
    if (flipCtrlCmd ? event.ctrlKey : event.metaKey) name = "Cmd-" + name;
    if (!noShift && event.shiftKey) name = "Shift-" + name;
    return name;
  }
  CodeMirror.lookupKey = lookupKey;
  CodeMirror.isModifierKey = isModifierKey;
  CodeMirror.keyName = keyName;

  // FROMTEXTAREA

  CodeMirror.fromTextArea = function(textarea, options) {
    if (!options) options = {};
    options.value = textarea.value;
    if (!options.tabindex && textarea.tabindex)
      options.tabindex = textarea.tabindex;
    if (!options.placeholder && textarea.placeholder)
      options.placeholder = textarea.placeholder;
    // Set autofocus to true if this textarea is focused, or if it has
    // autofocus and no other element is focused.
    if (options.autofocus == null) {
      var hasFocus = document.body;
      // doc.activeElement occasionally throws on IE
      try { hasFocus = document.activeElement; } catch(e) {}
      options.autofocus = hasFocus == textarea ||
        textarea.getAttribute("autofocus") != null && hasFocus == document.body;
    }

    function save() {textarea.value = cm.getValue();}
    if (textarea.form) {
      on(textarea.form, "submit", save);
      // Deplorable hack to make the submit method do the right thing.
      if (!options.leaveSubmitMethodAlone) {
        var form = textarea.form, realSubmit = form.submit;
        try {
          var wrappedSubmit = form.submit = function() {
            save();
            form.submit = realSubmit;
            form.submit();
            form.submit = wrappedSubmit;
          };
        } catch(e) {}
      }
    }

    textarea.style.display = "none";
    var cm = CodeMirror(function(node) {
      textarea.parentNode.insertBefore(node, textarea.nextSibling);
    }, options);
    cm.save = save;
    cm.getTextArea = function() { return textarea; };
    cm.toTextArea = function() {
      save();
      textarea.parentNode.removeChild(cm.getWrapperElement());
      textarea.style.display = "";
      if (textarea.form) {
        off(textarea.form, "submit", save);
        if (typeof textarea.form.submit == "function")
          textarea.form.submit = realSubmit;
      }
    };
    return cm;
  };

  // STRING STREAM

  // Fed to the mode parsers, provides helper functions to make
  // parsers more succinct.

  // The character stream used by a mode's parser.
  function StringStream(string, tabSize) {
    this.pos = this.start = 0;
    this.string = string;
    this.tabSize = tabSize || 8;
    this.lastColumnPos = this.lastColumnValue = 0;
  }

  StringStream.prototype = {
    eol: function() {return this.pos >= this.string.length;},
    sol: function() {return this.pos == 0;},
    peek: function() {return this.string.charAt(this.pos) || undefined;},
    next: function() {
      if (this.pos < this.string.length)
        return this.string.charAt(this.pos++);
    },
    eat: function(match) {
      var ch = this.string.charAt(this.pos);
      if (typeof match == "string") var ok = ch == match;
      else var ok = ch && (match.test ? match.test(ch) : match(ch));
      if (ok) {++this.pos; return ch;}
    },
    eatWhile: function(match) {
      var start = this.pos;
      while (this.eat(match)){}
      return this.pos > start;
    },
    eatSpace: function() {
      var start = this.pos;
      while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;
      return this.pos > start;
    },
    skipToEnd: function() {this.pos = this.string.length;},
    skipTo: function(ch) {
      var found = this.string.indexOf(ch, this.pos);
      if (found > -1) {this.pos = found; return true;}
    },
    backUp: function(n) {this.pos -= n;},
    column: function() {
      if (this.lastColumnPos < this.start) {
        this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue);
        this.lastColumnPos = this.start;
      }
      return this.lastColumnValue;
    },
    indentation: function() {return countColumn(this.string, null, this.tabSize);},
    match: function(pattern, consume, caseInsensitive) {
      if (typeof pattern == "string") {
        var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;};
        var substr = this.string.substr(this.pos, pattern.length);
        if (cased(substr) == cased(pattern)) {
          if (consume !== false) this.pos += pattern.length;
          return true;
        }
      } else {
        var match = this.string.slice(this.pos).match(pattern);
        if (match && match.index > 0) return null;
        if (match && consume !== false) this.pos += match[0].length;
        return match;
      }
    },
    current: function(){return this.string.slice(this.start, this.pos);}
  };
  CodeMirror.StringStream = StringStream;

  // TEXTMARKERS

  function TextMarker(doc, type) {
    this.lines = [];
    this.type = type;
    this.doc = doc;
  }
  CodeMirror.TextMarker = TextMarker;
  eventMixin(TextMarker);

  TextMarker.prototype.clear = function() {
    if (this.explicitlyCleared) return;
    var cm = this.doc.cm, withOp = cm && !cm.curOp;
    if (withOp) startOperation(cm);
    if (hasHandler(this, "clear")) {
      var found = this.find();
      if (found) signalLater(this, "clear", found.from, found.to);
    }
    var min = null, max = null;
    for (var i = 0; i < this.lines.length; ++i) {
      var line = this.lines[i];
      var span = getMarkedSpanFor(line.markedSpans, this);
      if (span.to != null) max = lineNo(line);
      line.markedSpans = removeMarkedSpan(line.markedSpans, span);
      if (span.from != null)
        min = lineNo(line);
      else if (this.collapsed && !lineIsHidden(this.doc, line) && cm)
        updateLineHeight(line, textHeight(cm.display));
    }
    if (cm && this.collapsed && !cm.options.lineWrapping) for (var i = 0; i < this.lines.length; ++i) {
      var visual = visualLine(cm.doc, this.lines[i]), len = lineLength(cm.doc, visual);
      if (len > cm.display.maxLineLength) {
        cm.display.maxLine = visual;
        cm.display.maxLineLength = len;
        cm.display.maxLineChanged = true;
      }
    }

    if (min != null && cm) regChange(cm, min, max + 1);
    this.lines.length = 0;
    this.explicitlyCleared = true;
    if (this.atomic && this.doc.cantEdit) {
      this.doc.cantEdit = false;
      if (cm) reCheckSelection(cm);
    }
    if (withOp) endOperation(cm);
  };

  TextMarker.prototype.find = function() {
    var from, to;
    for (var i = 0; i < this.lines.length; ++i) {
      var line = this.lines[i];
      var span = getMarkedSpanFor(line.markedSpans, this);
      if (span.from != null || span.to != null) {
        var found = lineNo(line);
        if (span.from != null) from = Pos(found, span.from);
        if (span.to != null) to = Pos(found, span.to);
      }
    }
    if (this.type == "bookmark") return from;
    return from && {from: from, to: to};
  };

  TextMarker.prototype.changed = function() {
    var pos = this.find(), cm = this.doc.cm;
    if (!pos || !cm) return;
    if (this.type != "bookmark") pos = pos.from;
    var line = getLine(this.doc, pos.line);
    clearCachedMeasurement(cm, line);
    if (pos.line >= cm.display.showingFrom && pos.line < cm.display.showingTo) {
      for (var node = cm.display.lineDiv.firstChild; node; node = node.nextSibling) if (node.lineObj == line) {
        if (node.offsetHeight != line.height) updateLineHeight(line, node.offsetHeight);
        break;
      }
      runInOp(cm, function() {
        cm.curOp.selectionChanged = cm.curOp.forceUpdate = cm.curOp.updateMaxLine = true;
      });
    }
  };

  TextMarker.prototype.attachLine = function(line) {
    if (!this.lines.length && this.doc.cm) {
      var op = this.doc.cm.curOp;
      if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1)
        (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this);
    }
    this.lines.push(line);
  };
  TextMarker.prototype.detachLine = function(line) {
    this.lines.splice(indexOf(this.lines, line), 1);
    if (!this.lines.length && this.doc.cm) {
      var op = this.doc.cm.curOp;
      (op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this);
    }
  };

  function markText(doc, from, to, options, type) {
    if (options && options.shared) return markTextShared(doc, from, to, options, type);
    if (doc.cm && !doc.cm.curOp) return operation(doc.cm, markText)(doc, from, to, options, type);

    var marker = new TextMarker(doc, type);
    if (type == "range" && !posLess(from, to)) return marker;
    if (options) copyObj(options, marker);
    if (marker.replacedWith) {
      marker.collapsed = true;
      marker.replacedWith = elt("span", [marker.replacedWith], "CodeMirror-widget");
      if (!options.handleMouseEvents) marker.replacedWith.ignoreEvents = true;
    }
    if (marker.collapsed) sawCollapsedSpans = true;

    if (marker.addToHistory)
      addToHistory(doc, {from: from, to: to, origin: "markText"},
                   {head: doc.sel.head, anchor: doc.sel.anchor}, NaN);

    var curLine = from.line, size = 0, collapsedAtStart, collapsedAtEnd, cm = doc.cm, updateMaxLine;
    doc.iter(curLine, to.line + 1, function(line) {
      if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(doc, line) == cm.display.maxLine)
        updateMaxLine = true;
      var span = {from: null, to: null, marker: marker};
      size += line.text.length;
      if (curLine == from.line) {span.from = from.ch; size -= from.ch;}
      if (curLine == to.line) {span.to = to.ch; size -= line.text.length - to.ch;}
      if (marker.collapsed) {
        if (curLine == to.line) collapsedAtEnd = collapsedSpanAt(line, to.ch);
        if (curLine == from.line) collapsedAtStart = collapsedSpanAt(line, from.ch);
        else updateLineHeight(line, 0);
      }
      addMarkedSpan(line, span);
      ++curLine;
    });
    if (marker.collapsed) doc.iter(from.line, to.line + 1, function(line) {
      if (lineIsHidden(doc, line)) updateLineHeight(line, 0);
    });

    if (marker.clearOnEnter) on(marker, "beforeCursorEnter", function() { marker.clear(); });

    if (marker.readOnly) {
      sawReadOnlySpans = true;
      if (doc.history.done.length || doc.history.undone.length)
        doc.clearHistory();
    }
    if (marker.collapsed) {
      if (collapsedAtStart != collapsedAtEnd)
        throw new Error("Inserting collapsed marker overlapping an existing one");
      marker.size = size;
      marker.atomic = true;
    }
    if (cm) {
      if (updateMaxLine) cm.curOp.updateMaxLine = true;
      if (marker.className || marker.title || marker.startStyle || marker.endStyle || marker.collapsed)
        regChange(cm, from.line, to.line + 1);
      if (marker.atomic) reCheckSelection(cm);
    }
    return marker;
  }

  // SHARED TEXTMARKERS

  function SharedTextMarker(markers, primary) {
    this.markers = markers;
    this.primary = primary;
    for (var i = 0, me = this; i < markers.length; ++i) {
      markers[i].parent = this;
      on(markers[i], "clear", function(){me.clear();});
    }
  }
  CodeMirror.SharedTextMarker = SharedTextMarker;
  eventMixin(SharedTextMarker);

  SharedTextMarker.prototype.clear = function() {
    if (this.explicitlyCleared) return;
    this.explicitlyCleared = true;
    for (var i = 0; i < this.markers.length; ++i)
      this.markers[i].clear();
    signalLater(this, "clear");
  };
  SharedTextMarker.prototype.find = function() {
    return this.primary.find();
  };

  function markTextShared(doc, from, to, options, type) {
    options = copyObj(options);
    options.shared = false;
    var markers = [markText(doc, from, to, options, type)], primary = markers[0];
    var widget = options.replacedWith;
    linkedDocs(doc, function(doc) {
      if (widget) options.replacedWith = widget.cloneNode(true);
      markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type));
      for (var i = 0; i < doc.linked.length; ++i)
        if (doc.linked[i].isParent) return;
      primary = lst(markers);
    });
    return new SharedTextMarker(markers, primary);
  }

  // TEXTMARKER SPANS

  function getMarkedSpanFor(spans, marker) {
    if (spans) for (var i = 0; i < spans.length; ++i) {
      var span = spans[i];
      if (span.marker == marker) return span;
    }
  }
  function removeMarkedSpan(spans, span) {
    for (var r, i = 0; i < spans.length; ++i)
      if (spans[i] != span) (r || (r = [])).push(spans[i]);
    return r;
  }
  function addMarkedSpan(line, span) {
    line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span];
    span.marker.attachLine(line);
  }

  function markedSpansBefore(old, startCh, isInsert) {
    if (old) for (var i = 0, nw; i < old.length; ++i) {
      var span = old[i], marker = span.marker;
      var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh);
      if (startsBefore || marker.type == "bookmark" && span.from == startCh && (!isInsert || !span.marker.insertLeft)) {
        var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh);
        (nw || (nw = [])).push({from: span.from,
                                to: endsAfter ? null : span.to,
                                marker: marker});
      }
    }
    return nw;
  }

  function markedSpansAfter(old, endCh, isInsert) {
    if (old) for (var i = 0, nw; i < old.length; ++i) {
      var span = old[i], marker = span.marker;
      var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh);
      if (endsAfter || marker.type == "bookmark" && span.from == endCh && (!isInsert || span.marker.insertLeft)) {
        var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh);
        (nw || (nw = [])).push({from: startsBefore ? null : span.from - endCh,
                                to: span.to == null ? null : span.to - endCh,
                                marker: marker});
      }
    }
    return nw;
  }

  function stretchSpansOverChange(doc, change) {
    var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans;
    var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans;
    if (!oldFirst && !oldLast) return null;

    var startCh = change.from.ch, endCh = change.to.ch, isInsert = posEq(change.from, change.to);
    // Get the spans that 'stick out' on both sides
    var first = markedSpansBefore(oldFirst, startCh, isInsert);
    var last = markedSpansAfter(oldLast, endCh, isInsert);

    // Next, merge those two ends
    var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0);
    if (first) {
      // Fix up .to properties of first
      for (var i = 0; i < first.length; ++i) {
        var span = first[i];
        if (span.to == null) {
          var found = getMarkedSpanFor(last, span.marker);
          if (!found) span.to = startCh;
          else if (sameLine) span.to = found.to == null ? null : found.to + offset;
        }
      }
    }
    if (last) {
      // Fix up .from in last (or move them into first in case of sameLine)
      for (var i = 0; i < last.length; ++i) {
        var span = last[i];
        if (span.to != null) span.to += offset;
        if (span.from == null) {
          var found = getMarkedSpanFor(first, span.marker);
          if (!found) {
            span.from = offset;
            if (sameLine) (first || (first = [])).push(span);
          }
        } else {
          span.from += offset;
          if (sameLine) (first || (first = [])).push(span);
        }
      }
    }
    if (sameLine && first) {
      // Make sure we didn't create any zero-length spans
      for (var i = 0; i < first.length; ++i)
        if (first[i].from != null && first[i].from == first[i].to && first[i].marker.type != "bookmark")
          first.splice(i--, 1);
      if (!first.length) first = null;
    }

    var newMarkers = [first];
    if (!sameLine) {
      // Fill gap with whole-line-spans
      var gap = change.text.length - 2, gapMarkers;
      if (gap > 0 && first)
        for (var i = 0; i < first.length; ++i)
          if (first[i].to == null)
            (gapMarkers || (gapMarkers = [])).push({from: null, to: null, marker: first[i].marker});
      for (var i = 0; i < gap; ++i)
        newMarkers.push(gapMarkers);
      newMarkers.push(last);
    }
    return newMarkers;
  }

  function mergeOldSpans(doc, change) {
    var old = getOldSpans(doc, change);
    var stretched = stretchSpansOverChange(doc, change);
    if (!old) return stretched;
    if (!stretched) return old;

    for (var i = 0; i < old.length; ++i) {
      var oldCur = old[i], stretchCur = stretched[i];
      if (oldCur && stretchCur) {
        spans: for (var j = 0; j < stretchCur.length; ++j) {
          var span = stretchCur[j];
          for (var k = 0; k < oldCur.length; ++k)
            if (oldCur[k].marker == span.marker) continue spans;
          oldCur.push(span);
        }
      } else if (stretchCur) {
        old[i] = stretchCur;
      }
    }
    return old;
  }

  function removeReadOnlyRanges(doc, from, to) {
    var markers = null;
    doc.iter(from.line, to.line + 1, function(line) {
      if (line.markedSpans) for (var i = 0; i < line.markedSpans.length; ++i) {
        var mark = line.markedSpans[i].marker;
        if (mark.readOnly && (!markers || indexOf(markers, mark) == -1))
          (markers || (markers = [])).push(mark);
      }
    });
    if (!markers) return null;
    var parts = [{from: from, to: to}];
    for (var i = 0; i < markers.length; ++i) {
      var mk = markers[i], m = mk.find();
      for (var j = 0; j < parts.length; ++j) {
        var p = parts[j];
        if (posLess(p.to, m.from) || posLess(m.to, p.from)) continue;
        var newParts = [j, 1];
        if (posLess(p.from, m.from) || !mk.inclusiveLeft && posEq(p.from, m.from))
          newParts.push({from: p.from, to: m.from});
        if (posLess(m.to, p.to) || !mk.inclusiveRight && posEq(p.to, m.to))
          newParts.push({from: m.to, to: p.to});
        parts.splice.apply(parts, newParts);
        j += newParts.length - 1;
      }
    }
    return parts;
  }

  function collapsedSpanAt(line, ch) {
    var sps = sawCollapsedSpans && line.markedSpans, found;
    if (sps) for (var sp, i = 0; i < sps.length; ++i) {
      sp = sps[i];
      if (!sp.marker.collapsed) continue;
      if ((sp.from == null || sp.from < ch) &&
          (sp.to == null || sp.to > ch) &&
          (!found || found.width < sp.marker.width))
        found = sp.marker;
    }
    return found;
  }
  function collapsedSpanAtStart(line) { return collapsedSpanAt(line, -1); }
  function collapsedSpanAtEnd(line) { return collapsedSpanAt(line, line.text.length + 1); }

  function visualLine(doc, line) {
    var merged;
    while (merged = collapsedSpanAtStart(line))
      line = getLine(doc, merged.find().from.line);
    return line;
  }

  function lineIsHidden(doc, line) {
    var sps = sawCollapsedSpans && line.markedSpans;
    if (sps) for (var sp, i = 0; i < sps.length; ++i) {
      sp = sps[i];
      if (!sp.marker.collapsed) continue;
      if (sp.from == null) return true;
      if (sp.marker.replacedWith) continue;
      if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp))
        return true;
    }
  }
  function lineIsHiddenInner(doc, line, span) {
    if (span.to == null) {
      var end = span.marker.find().to, endLine = getLine(doc, end.line);
      return lineIsHiddenInner(doc, endLine, getMarkedSpanFor(endLine.markedSpans, span.marker));
    }
    if (span.marker.inclusiveRight && span.to == line.text.length)
      return true;
    for (var sp, i = 0; i < line.markedSpans.length; ++i) {
      sp = line.markedSpans[i];
      if (sp.marker.collapsed && !sp.marker.replacedWith && sp.from == span.to &&
          (sp.marker.inclusiveLeft || span.marker.inclusiveRight) &&
          lineIsHiddenInner(doc, line, sp)) return true;
    }
  }

  function detachMarkedSpans(line) {
    var spans = line.markedSpans;
    if (!spans) return;
    for (var i = 0; i < spans.length; ++i)
      spans[i].marker.detachLine(line);
    line.markedSpans = null;
  }

  function attachMarkedSpans(line, spans) {
    if (!spans) return;
    for (var i = 0; i < spans.length; ++i)
      spans[i].marker.attachLine(line);
    line.markedSpans = spans;
  }

  // LINE WIDGETS

  var LineWidget = CodeMirror.LineWidget = function(cm, node, options) {
    if (options) for (var opt in options) if (options.hasOwnProperty(opt))
      this[opt] = options[opt];
    this.cm = cm;
    this.node = node;
  };
  eventMixin(LineWidget);
  function widgetOperation(f) {
    return function() {
      var withOp = !this.cm.curOp;
      if (withOp) startOperation(this.cm);
      try {var result = f.apply(this, arguments);}
      finally {if (withOp) endOperation(this.cm);}
      return result;
    };
  }
  LineWidget.prototype.clear = widgetOperation(function() {
    var ws = this.line.widgets, no = lineNo(this.line);
    if (no == null || !ws) return;
    for (var i = 0; i < ws.length; ++i) if (ws[i] == this) ws.splice(i--, 1);
    if (!ws.length) this.line.widgets = null;
    var aboveVisible = heightAtLine(this.cm, this.line) < this.cm.doc.scrollTop;
    updateLineHeight(this.line, Math.max(0, this.line.height - widgetHeight(this)));
    if (aboveVisible) addToScrollPos(this.cm, 0, -this.height);
    regChange(this.cm, no, no + 1);
  });
  LineWidget.prototype.changed = widgetOperation(function() {
    var oldH = this.height;
    this.height = null;
    var diff = widgetHeight(this) - oldH;
    if (!diff) return;
    updateLineHeight(this.line, this.line.height + diff);
    var no = lineNo(this.line);
    regChange(this.cm, no, no + 1);
  });

  function widgetHeight(widget) {
    if (widget.height != null) return widget.height;
    if (!widget.node.parentNode || widget.node.parentNode.nodeType != 1)
      removeChildrenAndAdd(widget.cm.display.measure, elt("div", [widget.node], null, "position: relative"));
    return widget.height = widget.node.offsetHeight;
  }

  function addLineWidget(cm, handle, node, options) {
    var widget = new LineWidget(cm, node, options);
    if (widget.noHScroll) cm.display.alignWidgets = true;
    changeLine(cm, handle, function(line) {
      var widgets = line.widgets || (line.widgets = []);
      if (widget.insertAt == null) widgets.push(widget);
      else widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget);
      widget.line = line;
      if (!lineIsHidden(cm.doc, line) || widget.showIfHidden) {
        var aboveVisible = heightAtLine(cm, line) < cm.doc.scrollTop;
        updateLineHeight(line, line.height + widgetHeight(widget));
        if (aboveVisible) addToScrollPos(cm, 0, widget.height);
      }
      return true;
    });
    return widget;
  }

  // LINE DATA STRUCTURE

  // Line objects. These hold state related to a line, including
  // highlighting info (the styles array).
  var Line = CodeMirror.Line = function(text, markedSpans, estimateHeight) {
    this.text = text;
    attachMarkedSpans(this, markedSpans);
    this.height = estimateHeight ? estimateHeight(this) : 1;
  };
  eventMixin(Line);

  function updateLine(line, text, markedSpans, estimateHeight) {
    line.text = text;
    if (line.stateAfter) line.stateAfter = null;
    if (line.styles) line.styles = null;
    if (line.order != null) line.order = null;
    detachMarkedSpans(line);
    attachMarkedSpans(line, markedSpans);
    var estHeight = estimateHeight ? estimateHeight(line) : 1;
    if (estHeight != line.height) updateLineHeight(line, estHeight);
  }

  function cleanUpLine(line) {
    line.parent = null;
    detachMarkedSpans(line);
  }

  // Run the given mode's parser over a line, update the styles
  // array, which contains alternating fragments of text and CSS
  // classes.
  function runMode(cm, text, mode, state, f) {
    var flattenSpans = mode.flattenSpans;
    if (flattenSpans == null) flattenSpans = cm.options.flattenSpans;
    var curStart = 0, curStyle = null;
    var stream = new StringStream(text, cm.options.tabSize), style;
    if (text == "" && mode.blankLine) mode.blankLine(state);
    while (!stream.eol()) {
      if (stream.pos > cm.options.maxHighlightLength) {
        flattenSpans = false;
        stream.pos = text.length;
        style = null;
      } else {
        style = mode.token(stream, state);
      }
      if (!flattenSpans || curStyle != style) {
        if (curStart < stream.start) f(stream.start, curStyle);
        curStart = stream.start; curStyle = style;
      }
      stream.start = stream.pos;
    }
    while (curStart < stream.pos) {
      // Webkit seems to refuse to render text nodes longer than 57444 characters
      var pos = Math.min(stream.pos, curStart + 50000);
      f(pos, curStyle);
      curStart = pos;
    }
  }

  function highlightLine(cm, line, state) {
    // A styles array always starts with a number identifying the
    // mode/overlays that it is based on (for easy invalidation).
    var st = [cm.state.modeGen];
    // Compute the base array of styles
    runMode(cm, line.text, cm.doc.mode, state, function(end, style) {st.push(end, style);});

    // Run overlays, adjust style array.
    for (var o = 0; o < cm.state.overlays.length; ++o) {
      var overlay = cm.state.overlays[o], i = 1, at = 0;
      runMode(cm, line.text, overlay.mode, true, function(end, style) {
        var start = i;
        // Ensure there's a token end at the current position, and that i points at it
        while (at < end) {
          var i_end = st[i];
          if (i_end > end)
            st.splice(i, 1, end, st[i+1], i_end);
          i += 2;
          at = Math.min(end, i_end);
        }
        if (!style) return;
        if (overlay.opaque) {
          st.splice(start, i - start, end, style);
          i = start + 2;
        } else {
          for (; start < i; start += 2) {
            var cur = st[start+1];
            st[start+1] = cur ? cur + " " + style : style;
          }
        }
      });
    }

    return st;
  }

  function getLineStyles(cm, line) {
    if (!line.styles || line.styles[0] != cm.state.modeGen)
      line.styles = highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line)));
    return line.styles;
  }

  // Lightweight form of highlight -- proceed over this line and
  // update state, but don't save a style array.
  function processLine(cm, line, state) {
    var mode = cm.doc.mode;
    var stream = new StringStream(line.text, cm.options.tabSize);
    if (line.text == "" && mode.blankLine) mode.blankLine(state);
    while (!stream.eol() && stream.pos <= cm.options.maxHighlightLength) {
      mode.token(stream, state);
      stream.start = stream.pos;
    }
  }

  var styleToClassCache = {};
  function interpretTokenStyle(style, builder) {
    if (!style) return null;
    for (;;) {
      var lineClass = style.match(/(?:^|\s)line-(background-)?(\S+)/);
      if (!lineClass) break;
      style = style.slice(0, lineClass.index) + style.slice(lineClass.index + lineClass[0].length);
      var prop = lineClass[1] ? "bgClass" : "textClass";
      if (builder[prop] == null)
        builder[prop] = lineClass[2];
      else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(builder[prop]))
        builder[prop] += " " + lineClass[2];
    }
    return styleToClassCache[style] ||
      (styleToClassCache[style] = "cm-" + style.replace(/ +/g, " cm-"));
  }

  function buildLineContent(cm, realLine, measure, copyWidgets) {
    var merged, line = realLine, empty = true;
    while (merged = collapsedSpanAtStart(line))
      line = getLine(cm.doc, merged.find().from.line);

    var builder = {pre: elt("pre"), col: 0, pos: 0,
                   measure: null, measuredSomething: false, cm: cm,
                   copyWidgets: copyWidgets};

    do {
      if (line.text) empty = false;
      builder.measure = line == realLine && measure;
      builder.pos = 0;
      builder.addToken = builder.measure ? buildTokenMeasure : buildToken;
      if ((ie || webkit) && cm.getOption("lineWrapping"))
        builder.addToken = buildTokenSplitSpaces(builder.addToken);
      var next = insertLineContent(line, builder, getLineStyles(cm, line));
      if (measure && line == realLine && !builder.measuredSomething) {
        measure[0] = builder.pre.appendChild(zeroWidthElement(cm.display.measure));
        builder.measuredSomething = true;
      }
      if (next) line = getLine(cm.doc, next.to.line);
    } while (next);

    if (measure && !builder.measuredSomething && !measure[0])
      measure[0] = builder.pre.appendChild(empty ? elt("span", "\u00a0") : zeroWidthElement(cm.display.measure));
    if (!builder.pre.firstChild && !lineIsHidden(cm.doc, realLine))
      builder.pre.appendChild(document.createTextNode("\u00a0"));

    var order;
    // Work around problem with the reported dimensions of single-char
    // direction spans on IE (issue #1129). See also the comment in
    // cursorCoords.
    if (measure && ie && (order = getOrder(line))) {
      var l = order.length - 1;
      if (order[l].from == order[l].to) --l;
      var last = order[l], prev = order[l - 1];
      if (last.from + 1 == last.to && prev && last.level < prev.level) {
        var span = measure[builder.pos - 1];
        if (span) span.parentNode.insertBefore(span.measureRight = zeroWidthElement(cm.display.measure),
                                               span.nextSibling);
      }
    }

    var textClass = builder.textClass ? builder.textClass + " " + (realLine.textClass || "") : realLine.textClass;
    if (textClass) builder.pre.className = textClass;

    signal(cm, "renderLine", cm, realLine, builder.pre);
    return builder;
  }

  var tokenSpecialChars = /[\t\u0000-\u0019\u00ad\u200b\u2028\u2029\uFEFF]/g;
  function buildToken(builder, text, style, startStyle, endStyle, title) {
    if (!text) return;
    if (!tokenSpecialChars.test(text)) {
      builder.col += text.length;
      var content = document.createTextNode(text);
    } else {
      var content = document.createDocumentFragment(), pos = 0;
      while (true) {
        tokenSpecialChars.lastIndex = pos;
        var m = tokenSpecialChars.exec(text);
        var skipped = m ? m.index - pos : text.length - pos;
        if (skipped) {
          content.appendChild(document.createTextNode(text.slice(pos, pos + skipped)));
          builder.col += skipped;
        }
        if (!m) break;
        pos += skipped + 1;
        if (m[0] == "\t") {
          var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize;
          content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"));
          builder.col += tabWidth;
        } else {
          var token = elt("span", "\u2022", "cm-invalidchar");
          token.title = "\\u" + m[0].charCodeAt(0).toString(16);
          content.appendChild(token);
          builder.col += 1;
        }
      }
    }
    if (style || startStyle || endStyle || builder.measure) {
      var fullStyle = style || "";
      if (startStyle) fullStyle += startStyle;
      if (endStyle) fullStyle += endStyle;
      var token = elt("span", [content], fullStyle);
      if (title) token.title = title;
      return builder.pre.appendChild(token);
    }
    builder.pre.appendChild(content);
  }

  function buildTokenMeasure(builder, text, style, startStyle, endStyle) {
    var wrapping = builder.cm.options.lineWrapping;
    for (var i = 0; i < text.length; ++i) {
      var ch = text.charAt(i), start = i == 0;
      if (ch >= "\ud800" && ch < "\udbff" && i < text.length - 1) {
        ch = text.slice(i, i + 2);
        ++i;
      } else if (i && wrapping && spanAffectsWrapping(text, i)) {
        builder.pre.appendChild(elt("wbr"));
      }
      var old = builder.measure[builder.pos];
      var span = builder.measure[builder.pos] =
        buildToken(builder, ch, style,
                   start && startStyle, i == text.length - 1 && endStyle);
      if (old) span.leftSide = old.leftSide || old;
      // In IE single-space nodes wrap differently than spaces
      // embedded in larger text nodes, except when set to
      // white-space: normal (issue #1268).
      if (ie && wrapping && ch == " " && i && !/\s/.test(text.charAt(i - 1)) &&
          i < text.length - 1 && !/\s/.test(text.charAt(i + 1)))
        span.style.whiteSpace = "normal";
      builder.pos += ch.length;
    }
    if (text.length) builder.measuredSomething = true;
  }

  function buildTokenSplitSpaces(inner) {
    function split(old) {
      var out = " ";
      for (var i = 0; i < old.length - 2; ++i) out += i % 2 ? " " : "\u00a0";
      out += " ";
      return out;
    }
    return function(builder, text, style, startStyle, endStyle, title) {
      return inner(builder, text.replace(/ {3,}/, split), style, startStyle, endStyle, title);
    };
  }

  function buildCollapsedSpan(builder, size, marker, ignoreWidget) {
    var widget = !ignoreWidget && marker.replacedWith;
    if (widget) {
      if (builder.copyWidgets) widget = widget.cloneNode(true);
      builder.pre.appendChild(widget);
      if (builder.measure) {
        if (size) {
          builder.measure[builder.pos] = widget;
        } else {
          var elt = zeroWidthElement(builder.cm.display.measure);
          if (marker.type == "bookmark" && !marker.insertLeft)
            builder.measure[builder.pos] = builder.pre.appendChild(elt);
          else if (builder.measure[builder.pos])
            return;
          else
            builder.measure[builder.pos] = builder.pre.insertBefore(elt, widget);
        }
        builder.measuredSomething = true;
      }
    }
    builder.pos += size;
  }

  // Outputs a number of spans to make up a line, taking highlighting
  // and marked text into account.
  function insertLineContent(line, builder, styles) {
    var spans = line.markedSpans, allText = line.text, at = 0;
    if (!spans) {
      for (var i = 1; i < styles.length; i+=2)
        builder.addToken(builder, allText.slice(at, at = styles[i]), interpretTokenStyle(styles[i+1], builder));
      return;
    }

    var len = allText.length, pos = 0, i = 1, text = "", style;
    var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed;
    for (;;) {
      if (nextChange == pos) { // Update current marker set
        spanStyle = spanEndStyle = spanStartStyle = title = "";
        collapsed = null; nextChange = Infinity;
        var foundBookmarks = [];
        for (var j = 0; j < spans.length; ++j) {
          var sp = spans[j], m = sp.marker;
          if (sp.from <= pos && (sp.to == null || sp.to > pos)) {
            if (sp.to != null && nextChange > sp.to) { nextChange = sp.to; spanEndStyle = ""; }
            if (m.className) spanStyle += " " + m.className;
            if (m.startStyle && sp.from == pos) spanStartStyle += " " + m.startStyle;
            if (m.endStyle && sp.to == nextChange) spanEndStyle += " " + m.endStyle;
            if (m.title && !title) title = m.title;
            if (m.collapsed && (!collapsed || collapsed.marker.size < m.size))
              collapsed = sp;
          } else if (sp.from > pos && nextChange > sp.from) {
            nextChange = sp.from;
          }
          if (m.type == "bookmark" && sp.from == pos && m.replacedWith) foundBookmarks.push(m);
        }
        if (collapsed && (collapsed.from || 0) == pos) {
          buildCollapsedSpan(builder, (collapsed.to == null ? len : collapsed.to) - pos,
                             collapsed.marker, collapsed.from == null);
          if (collapsed.to == null) return collapsed.marker.find();
        }
        if (!collapsed && foundBookmarks.length) for (var j = 0; j < foundBookmarks.length; ++j)
          buildCollapsedSpan(builder, 0, foundBookmarks[j]);
      }
      if (pos >= len) break;

      var upto = Math.min(len, nextChange);
      while (true) {
        if (text) {
          var end = pos + text.length;
          if (!collapsed) {
            var tokenText = end > upto ? text.slice(0, upto - pos) : text;
            builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle,
                             spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", title);
          }
          if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;}
          pos = end;
          spanStartStyle = "";
        }
        text = allText.slice(at, at = styles[i++]);
        style = interpretTokenStyle(styles[i++], builder);
      }
    }
  }

  // DOCUMENT DATA STRUCTURE

  function updateDoc(doc, change, markedSpans, selAfter, estimateHeight) {
    function spansFor(n) {return markedSpans ? markedSpans[n] : null;}
    function update(line, text, spans) {
      updateLine(line, text, spans, estimateHeight);
      signalLater(line, "change", line, change);
    }

    var from = change.from, to = change.to, text = change.text;
    var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line);
    var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line;

    // First adjust the line structure
    if (from.ch == 0 && to.ch == 0 && lastText == "") {
      // This is a whole-line replace. Treated specially to make
      // sure line objects move the way they are supposed to.
      for (var i = 0, e = text.length - 1, added = []; i < e; ++i)
        added.push(new Line(text[i], spansFor(i), estimateHeight));
      update(lastLine, lastLine.text, lastSpans);
      if (nlines) doc.remove(from.line, nlines);
      if (added.length) doc.insert(from.line, added);
    } else if (firstLine == lastLine) {
      if (text.length == 1) {
        update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans);
      } else {
        for (var added = [], i = 1, e = text.length - 1; i < e; ++i)
          added.push(new Line(text[i], spansFor(i), estimateHeight));
        added.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight));
        update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
        doc.insert(from.line + 1, added);
      }
    } else if (text.length == 1) {
      update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0));
      doc.remove(from.line + 1, nlines);
    } else {
      update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
      update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans);
      for (var i = 1, e = text.length - 1, added = []; i < e; ++i)
        added.push(new Line(text[i], spansFor(i), estimateHeight));
      if (nlines > 1) doc.remove(from.line + 1, nlines - 1);
      doc.insert(from.line + 1, added);
    }

    signalLater(doc, "change", doc, change);
    setSelection(doc, selAfter.anchor, selAfter.head, null, true);
  }

  function LeafChunk(lines) {
    this.lines = lines;
    this.parent = null;
    for (var i = 0, e = lines.length, height = 0; i < e; ++i) {
      lines[i].parent = this;
      height += lines[i].height;
    }
    this.height = height;
  }

  LeafChunk.prototype = {
    chunkSize: function() { return this.lines.length; },
    removeInner: function(at, n) {
      for (var i = at, e = at + n; i < e; ++i) {
        var line = this.lines[i];
        this.height -= line.height;
        cleanUpLine(line);
        signalLater(line, "delete");
      }
      this.lines.splice(at, n);
    },
    collapse: function(lines) {
      lines.splice.apply(lines, [lines.length, 0].concat(this.lines));
    },
    insertInner: function(at, lines, height) {
      this.height += height;
      this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));
      for (var i = 0, e = lines.length; i < e; ++i) lines[i].parent = this;
    },
    iterN: function(at, n, op) {
      for (var e = at + n; at < e; ++at)
        if (op(this.lines[at])) return true;
    }
  };

  function BranchChunk(children) {
    this.children = children;
    var size = 0, height = 0;
    for (var i = 0, e = children.length; i < e; ++i) {
      var ch = children[i];
      size += ch.chunkSize(); height += ch.height;
      ch.parent = this;
    }
    this.size = size;
    this.height = height;
    this.parent = null;
  }

  BranchChunk.prototype = {
    chunkSize: function() { return this.size; },
    removeInner: function(at, n) {
      this.size -= n;
      for (var i = 0; i < this.children.length; ++i) {
        var child = this.children[i], sz = child.chunkSize();
        if (at < sz) {
          var rm = Math.min(n, sz - at), oldHeight = child.height;
          child.removeInner(at, rm);
          this.height -= oldHeight - child.height;
          if (sz == rm) { this.children.splice(i--, 1); child.parent = null; }
          if ((n -= rm) == 0) break;
          at = 0;
        } else at -= sz;
      }
      if (this.size - n < 25) {
        var lines = [];
        this.collapse(lines);
        this.children = [new LeafChunk(lines)];
        this.children[0].parent = this;
      }
    },
    collapse: function(lines) {
      for (var i = 0, e = this.children.length; i < e; ++i) this.children[i].collapse(lines);
    },
    insertInner: function(at, lines, height) {
      this.size += lines.length;
      this.height += height;
      for (var i = 0, e = this.children.length; i < e; ++i) {
        var child = this.children[i], sz = child.chunkSize();
        if (at <= sz) {
          child.insertInner(at, lines, height);
          if (child.lines && child.lines.length > 50) {
            while (child.lines.length > 50) {
              var spilled = child.lines.splice(child.lines.length - 25, 25);
              var newleaf = new LeafChunk(spilled);
              child.height -= newleaf.height;
              this.children.splice(i + 1, 0, newleaf);
              newleaf.parent = this;
            }
            this.maybeSpill();
          }
          break;
        }
        at -= sz;
      }
    },
    maybeSpill: function() {
      if (this.children.length <= 10) return;
      var me = this;
      do {
        var spilled = me.children.splice(me.children.length - 5, 5);
        var sibling = new BranchChunk(spilled);
        if (!me.parent) { // Become the parent node
          var copy = new BranchChunk(me.children);
          copy.parent = me;
          me.children = [copy, sibling];
          me = copy;
        } else {
          me.size -= sibling.size;
          me.height -= sibling.height;
          var myIndex = indexOf(me.parent.children, me);
          me.parent.children.splice(myIndex + 1, 0, sibling);
        }
        sibling.parent = me.parent;
      } while (me.children.length > 10);
      me.parent.maybeSpill();
    },
    iterN: function(at, n, op) {
      for (var i = 0, e = this.children.length; i < e; ++i) {
        var child = this.children[i], sz = child.chunkSize();
        if (at < sz) {
          var used = Math.min(n, sz - at);
          if (child.iterN(at, used, op)) return true;
          if ((n -= used) == 0) break;
          at = 0;
        } else at -= sz;
      }
    }
  };

  var nextDocId = 0;
  var Doc = CodeMirror.Doc = function(text, mode, firstLine) {
    if (!(this instanceof Doc)) return new Doc(text, mode, firstLine);
    if (firstLine == null) firstLine = 0;

    BranchChunk.call(this, [new LeafChunk([new Line("", null)])]);
    this.first = firstLine;
    this.scrollTop = this.scrollLeft = 0;
    this.cantEdit = false;
    this.history = makeHistory();
    this.cleanGeneration = 1;
    this.frontier = firstLine;
    var start = Pos(firstLine, 0);
    this.sel = {from: start, to: start, head: start, anchor: start, shift: false, extend: false, goalColumn: null};
    this.id = ++nextDocId;
    this.modeOption = mode;

    if (typeof text == "string") text = splitLines(text);
    updateDoc(this, {from: start, to: start, text: text}, null, {head: start, anchor: start});
  };

  Doc.prototype = createObj(BranchChunk.prototype, {
    constructor: Doc,
    iter: function(from, to, op) {
      if (op) this.iterN(from - this.first, to - from, op);
      else this.iterN(this.first, this.first + this.size, from);
    },

    insert: function(at, lines) {
      var height = 0;
      for (var i = 0, e = lines.length; i < e; ++i) height += lines[i].height;
      this.insertInner(at - this.first, lines, height);
    },
    remove: function(at, n) { this.removeInner(at - this.first, n); },

    getValue: function(lineSep) {
      var lines = getLines(this, this.first, this.first + this.size);
      if (lineSep === false) return lines;
      return lines.join(lineSep || "\n");
    },
    setValue: function(code) {
      var top = Pos(this.first, 0), last = this.first + this.size - 1;
      makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length),
                        text: splitLines(code), origin: "setValue"},
                 {head: top, anchor: top}, true);
    },
    replaceRange: function(code, from, to, origin) {
      from = clipPos(this, from);
      to = to ? clipPos(this, to) : from;
      replaceRange(this, code, from, to, origin);
    },
    getRange: function(from, to, lineSep) {
      var lines = getBetween(this, clipPos(this, from), clipPos(this, to));
      if (lineSep === false) return lines;
      return lines.join(lineSep || "\n");
    },

    getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;},
    setLine: function(line, text) {
      if (isLine(this, line))
        replaceRange(this, text, Pos(line, 0), clipPos(this, Pos(line)));
    },
    removeLine: function(line) {
      if (line) replaceRange(this, "", clipPos(this, Pos(line - 1)), clipPos(this, Pos(line)));
      else replaceRange(this, "", Pos(0, 0), clipPos(this, Pos(1, 0)));
    },

    getLineHandle: function(line) {if (isLine(this, line)) return getLine(this, line);},
    getLineNumber: function(line) {return lineNo(line);},

    getLineHandleVisualStart: function(line) {
      if (typeof line == "number") line = getLine(this, line);
      return visualLine(this, line);
    },

    lineCount: function() {return this.size;},
    firstLine: function() {return this.first;},
    lastLine: function() {return this.first + this.size - 1;},

    clipPos: function(pos) {return clipPos(this, pos);},

    getCursor: function(start) {
      var sel = this.sel, pos;
      if (start == null || start == "head") pos = sel.head;
      else if (start == "anchor") pos = sel.anchor;
      else if (start == "end" || start === false) pos = sel.to;
      else pos = sel.from;
      return copyPos(pos);
    },
    somethingSelected: function() {return !posEq(this.sel.head, this.sel.anchor);},

    setCursor: docOperation(function(line, ch, extend) {
      var pos = clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line);
      if (extend) extendSelection(this, pos);
      else setSelection(this, pos, pos);
    }),
    setSelection: docOperation(function(anchor, head, bias) {
      setSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), bias);
    }),
    extendSelection: docOperation(function(from, to, bias) {
      extendSelection(this, clipPos(this, from), to && clipPos(this, to), bias);
    }),

    getSelection: function(lineSep) {return this.getRange(this.sel.from, this.sel.to, lineSep);},
    replaceSelection: function(code, collapse, origin) {
      makeChange(this, {from: this.sel.from, to: this.sel.to, text: splitLines(code), origin: origin}, collapse || "around");
    },
    undo: docOperation(function() {makeChangeFromHistory(this, "undo");}),
    redo: docOperation(function() {makeChangeFromHistory(this, "redo");}),

    setExtending: function(val) {this.sel.extend = val;},

    historySize: function() {
      var hist = this.history;
      return {undo: hist.done.length, redo: hist.undone.length};
    },
    clearHistory: function() {this.history = makeHistory(this.history.maxGeneration);},

    markClean: function() {
      this.cleanGeneration = this.changeGeneration();
    },
    changeGeneration: function() {
      this.history.lastOp = this.history.lastOrigin = null;
      return this.history.generation;
    },
    isClean: function (gen) {
      return this.history.generation == (gen || this.cleanGeneration);
    },

    getHistory: function() {
      return {done: copyHistoryArray(this.history.done),
              undone: copyHistoryArray(this.history.undone)};
    },
    setHistory: function(histData) {
      var hist = this.history = makeHistory(this.history.maxGeneration);
      hist.done = histData.done.slice(0);
      hist.undone = histData.undone.slice(0);
    },

    markText: function(from, to, options) {
      return markText(this, clipPos(this, from), clipPos(this, to), options, "range");
    },
    setBookmark: function(pos, options) {
      var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options),
                      insertLeft: options && options.insertLeft};
      pos = clipPos(this, pos);
      return markText(this, pos, pos, realOpts, "bookmark");
    },
    findMarksAt: function(pos) {
      pos = clipPos(this, pos);
      var markers = [], spans = getLine(this, pos.line).markedSpans;
      if (spans) for (var i = 0; i < spans.length; ++i) {
        var span = spans[i];
        if ((span.from == null || span.from <= pos.ch) &&
            (span.to == null || span.to >= pos.ch))
          markers.push(span.marker.parent || span.marker);
      }
      return markers;
    },
    getAllMarks: function() {
      var markers = [];
      this.iter(function(line) {
        var sps = line.markedSpans;
        if (sps) for (var i = 0; i < sps.length; ++i)
          if (sps[i].from != null) markers.push(sps[i].marker);
      });
      return markers;
    },

    posFromIndex: function(off) {
      var ch, lineNo = this.first;
      this.iter(function(line) {
        var sz = line.text.length + 1;
        if (sz > off) { ch = off; return true; }
        off -= sz;
        ++lineNo;
      });
      return clipPos(this, Pos(lineNo, ch));
    },
    indexFromPos: function (coords) {
      coords = clipPos(this, coords);
      var index = coords.ch;
      if (coords.line < this.first || coords.ch < 0) return 0;
      this.iter(this.first, coords.line, function (line) {
        index += line.text.length + 1;
      });
      return index;
    },

    copy: function(copyHistory) {
      var doc = new Doc(getLines(this, this.first, this.first + this.size), this.modeOption, this.first);
      doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft;
      doc.sel = {from: this.sel.from, to: this.sel.to, head: this.sel.head, anchor: this.sel.anchor,
                 shift: this.sel.shift, extend: false, goalColumn: this.sel.goalColumn};
      if (copyHistory) {
        doc.history.undoDepth = this.history.undoDepth;
        doc.setHistory(this.getHistory());
      }
      return doc;
    },

    linkedDoc: function(options) {
      if (!options) options = {};
      var from = this.first, to = this.first + this.size;
      if (options.from != null && options.from > from) from = options.from;
      if (options.to != null && options.to < to) to = options.to;
      var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from);
      if (options.sharedHist) copy.history = this.history;
      (this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist});
      copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}];
      return copy;
    },
    unlinkDoc: function(other) {
      if (other instanceof CodeMirror) other = other.doc;
      if (this.linked) for (var i = 0; i < this.linked.length; ++i) {
        var link = this.linked[i];
        if (link.doc != other) continue;
        this.linked.splice(i, 1);
        other.unlinkDoc(this);
        break;
      }
      // If the histories were shared, split them again
      if (other.history == this.history) {
        var splitIds = [other.id];
        linkedDocs(other, function(doc) {splitIds.push(doc.id);}, true);
        other.history = makeHistory();
        other.history.done = copyHistoryArray(this.history.done, splitIds);
        other.history.undone = copyHistoryArray(this.history.undone, splitIds);
      }
    },
    iterLinkedDocs: function(f) {linkedDocs(this, f);},

    getMode: function() {return this.mode;},
    getEditor: function() {return this.cm;}
  });

  Doc.prototype.eachLine = Doc.prototype.iter;

  // The Doc methods that should be available on CodeMirror instances
  var dontDelegate = "iter insert remove copy getEditor".split(" ");
  for (var prop in Doc.prototype) if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0)
    CodeMirror.prototype[prop] = (function(method) {
      return function() {return method.apply(this.doc, arguments);};
    })(Doc.prototype[prop]);

  eventMixin(Doc);

  function linkedDocs(doc, f, sharedHistOnly) {
    function propagate(doc, skip, sharedHist) {
      if (doc.linked) for (var i = 0; i < doc.linked.length; ++i) {
        var rel = doc.linked[i];
        if (rel.doc == skip) continue;
        var shared = sharedHist && rel.sharedHist;
        if (sharedHistOnly && !shared) continue;
        f(rel.doc, shared);
        propagate(rel.doc, doc, shared);
      }
    }
    propagate(doc, null, true);
  }

  function attachDoc(cm, doc) {
    if (doc.cm) throw new Error("This document is already in use.");
    cm.doc = doc;
    doc.cm = cm;
    estimateLineHeights(cm);
    loadMode(cm);
    if (!cm.options.lineWrapping) computeMaxLength(cm);
    cm.options.mode = doc.modeOption;
    regChange(cm);
  }

  // LINE UTILITIES

  function getLine(chunk, n) {
    n -= chunk.first;
    while (!chunk.lines) {
      for (var i = 0;; ++i) {
        var child = chunk.children[i], sz = child.chunkSize();
        if (n < sz) { chunk = child; break; }
        n -= sz;
      }
    }
    return chunk.lines[n];
  }

  function getBetween(doc, start, end) {
    var out = [], n = start.line;
    doc.iter(start.line, end.line + 1, function(line) {
      var text = line.text;
      if (n == end.line) text = text.slice(0, end.ch);
      if (n == start.line) text = text.slice(start.ch);
      out.push(text);
      ++n;
    });
    return out;
  }
  function getLines(doc, from, to) {
    var out = [];
    doc.iter(from, to, function(line) { out.push(line.text); });
    return out;
  }

  function updateLineHeight(line, height) {
    var diff = height - line.height;
    for (var n = line; n; n = n.parent) n.height += diff;
  }

  function lineNo(line) {
    if (line.parent == null) return null;
    var cur = line.parent, no = indexOf(cur.lines, line);
    for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {
      for (var i = 0;; ++i) {
        if (chunk.children[i] == cur) break;
        no += chunk.children[i].chunkSize();
      }
    }
    return no + cur.first;
  }

  function lineAtHeight(chunk, h) {
    var n = chunk.first;
    outer: do {
      for (var i = 0, e = chunk.children.length; i < e; ++i) {
        var child = chunk.children[i], ch = child.height;
        if (h < ch) { chunk = child; continue outer; }
        h -= ch;
        n += child.chunkSize();
      }
      return n;
    } while (!chunk.lines);
    for (var i = 0, e = chunk.lines.length; i < e; ++i) {
      var line = chunk.lines[i], lh = line.height;
      if (h < lh) break;
      h -= lh;
    }
    return n + i;
  }

  function heightAtLine(cm, lineObj) {
    lineObj = visualLine(cm.doc, lineObj);

    var h = 0, chunk = lineObj.parent;
    for (var i = 0; i < chunk.lines.length; ++i) {
      var line = chunk.lines[i];
      if (line == lineObj) break;
      else h += line.height;
    }
    for (var p = chunk.parent; p; chunk = p, p = chunk.parent) {
      for (var i = 0; i < p.children.length; ++i) {
        var cur = p.children[i];
        if (cur == chunk) break;
        else h += cur.height;
      }
    }
    return h;
  }

  function getOrder(line) {
    var order = line.order;
    if (order == null) order = line.order = bidiOrdering(line.text);
    return order;
  }

  // HISTORY

  function makeHistory(startGen) {
    return {
      // Arrays of history events. Doing something adds an event to
      // done and clears undo. Undoing moves events from done to
      // undone, redoing moves them in the other direction.
      done: [], undone: [], undoDepth: Infinity,
      // Used to track when changes can be merged into a single undo
      // event
      lastTime: 0, lastOp: null, lastOrigin: null,
      // Used by the isClean() method
      generation: startGen || 1, maxGeneration: startGen || 1
    };
  }

  function attachLocalSpans(doc, change, from, to) {
    var existing = change["spans_" + doc.id], n = 0;
    doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function(line) {
      if (line.markedSpans)
        (existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans;
      ++n;
    });
  }

  function historyChangeFromChange(doc, change) {
    var from = { line: change.from.line, ch: change.from.ch };
    var histChange = {from: from, to: changeEnd(change), text: getBetween(doc, change.from, change.to)};
    attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);
    linkedDocs(doc, function(doc) {attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);}, true);
    return histChange;
  }

  function addToHistory(doc, change, selAfter, opId) {
    var hist = doc.history;
    hist.undone.length = 0;
    var time = +new Date, cur = lst(hist.done);

    if (cur &&
        (hist.lastOp == opId ||
         hist.lastOrigin == change.origin && change.origin &&
         ((change.origin.charAt(0) == "+" && doc.cm && hist.lastTime > time - doc.cm.options.historyEventDelay) ||
          change.origin.charAt(0) == "*"))) {
      // Merge this change into the last event
      var last = lst(cur.changes);
      if (posEq(change.from, change.to) && posEq(change.from, last.to)) {
        // Optimized case for simple insertion -- don't want to add
        // new changesets for every character typed
        last.to = changeEnd(change);
      } else {
        // Add new sub-event
        cur.changes.push(historyChangeFromChange(doc, change));
      }
      cur.anchorAfter = selAfter.anchor; cur.headAfter = selAfter.head;
    } else {
      // Can not be merged, start a new event.
      cur = {changes: [historyChangeFromChange(doc, change)],
             generation: hist.generation,
             anchorBefore: doc.sel.anchor, headBefore: doc.sel.head,
             anchorAfter: selAfter.anchor, headAfter: selAfter.head};
      hist.done.push(cur);
      hist.generation = ++hist.maxGeneration;
      while (hist.done.length > hist.undoDepth)
        hist.done.shift();
    }
    hist.lastTime = time;
    hist.lastOp = opId;
    hist.lastOrigin = change.origin;
  }

  function removeClearedSpans(spans) {
    if (!spans) return null;
    for (var i = 0, out; i < spans.length; ++i) {
      if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); }
      else if (out) out.push(spans[i]);
    }
    return !out ? spans : out.length ? out : null;
  }

  function getOldSpans(doc, change) {
    var found = change["spans_" + doc.id];
    if (!found) return null;
    for (var i = 0, nw = []; i < change.text.length; ++i)
      nw.push(removeClearedSpans(found[i]));
    return nw;
  }

  // Used both to provide a JSON-safe object in .getHistory, and, when
  // detaching a document, to split the history in two
  function copyHistoryArray(events, newGroup) {
    for (var i = 0, copy = []; i < events.length; ++i) {
      var event = events[i], changes = event.changes, newChanges = [];
      copy.push({changes: newChanges, anchorBefore: event.anchorBefore, headBefore: event.headBefore,
                 anchorAfter: event.anchorAfter, headAfter: event.headAfter});
      for (var j = 0; j < changes.length; ++j) {
        var change = changes[j], m;
        newChanges.push({from: change.from, to: change.to, text: change.text});
        if (newGroup) for (var prop in change) if (m = prop.match(/^spans_(\d+)$/)) {
          if (indexOf(newGroup, Number(m[1])) > -1) {
            lst(newChanges)[prop] = change[prop];
            delete change[prop];
          }
        }
      }
    }
    return copy;
  }

  // Rebasing/resetting history to deal with externally-sourced changes

  function rebaseHistSel(pos, from, to, diff) {
    if (to < pos.line) {
      pos.line += diff;
    } else if (from < pos.line) {
      pos.line = from;
      pos.ch = 0;
    }
  }

  // Tries to rebase an array of history events given a change in the
  // document. If the change touches the same lines as the event, the
  // event, and everything 'behind' it, is discarded. If the change is
  // before the event, the event's positions are updated. Uses a
  // copy-on-write scheme for the positions, to avoid having to
  // reallocate them all on every rebase, but also avoid problems with
  // shared position objects being unsafely updated.
  function rebaseHistArray(array, from, to, diff) {
    for (var i = 0; i < array.length; ++i) {
      var sub = array[i], ok = true;
      for (var j = 0; j < sub.changes.length; ++j) {
        var cur = sub.changes[j];
        if (!sub.copied) { cur.from = copyPos(cur.from); cur.to = copyPos(cur.to); }
        if (to < cur.from.line) {
          cur.from.line += diff;
          cur.to.line += diff;
        } else if (from <= cur.to.line) {
          ok = false;
          break;
        }
      }
      if (!sub.copied) {
        sub.anchorBefore = copyPos(sub.anchorBefore); sub.headBefore = copyPos(sub.headBefore);
        sub.anchorAfter = copyPos(sub.anchorAfter); sub.readAfter = copyPos(sub.headAfter);
        sub.copied = true;
      }
      if (!ok) {
        array.splice(0, i + 1);
        i = 0;
      } else {
        rebaseHistSel(sub.anchorBefore); rebaseHistSel(sub.headBefore);
        rebaseHistSel(sub.anchorAfter); rebaseHistSel(sub.headAfter);
      }
    }
  }

  function rebaseHist(hist, change) {
    var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1;
    rebaseHistArray(hist.done, from, to, diff);
    rebaseHistArray(hist.undone, from, to, diff);
  }

  // EVENT OPERATORS

  function stopMethod() {e_stop(this);}
  // Ensure an event has a stop method.
  function addStop(event) {
    if (!event.stop) event.stop = stopMethod;
    return event;
  }

  function e_preventDefault(e) {
    if (e.preventDefault) e.preventDefault();
    else e.returnValue = false;
  }
  function e_stopPropagation(e) {
    if (e.stopPropagation) e.stopPropagation();
    else e.cancelBubble = true;
  }
  function e_defaultPrevented(e) {
    return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false;
  }
  function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);}
  CodeMirror.e_stop = e_stop;
  CodeMirror.e_preventDefault = e_preventDefault;
  CodeMirror.e_stopPropagation = e_stopPropagation;

  function e_target(e) {return e.target || e.srcElement;}
  function e_button(e) {
    var b = e.which;
    if (b == null) {
      if (e.button & 1) b = 1;
      else if (e.button & 2) b = 3;
      else if (e.button & 4) b = 2;
    }
    if (mac && e.ctrlKey && b == 1) b = 3;
    return b;
  }

  // EVENT HANDLING

  function on(emitter, type, f) {
    if (emitter.addEventListener)
      emitter.addEventListener(type, f, false);
    else if (emitter.attachEvent)
      emitter.attachEvent("on" + type, f);
    else {
      var map = emitter._handlers || (emitter._handlers = {});
      var arr = map[type] || (map[type] = []);
      arr.push(f);
    }
  }

  function off(emitter, type, f) {
    if (emitter.removeEventListener)
      emitter.removeEventListener(type, f, false);
    else if (emitter.detachEvent)
      emitter.detachEvent("on" + type, f);
    else {
      var arr = emitter._handlers && emitter._handlers[type];
      if (!arr) return;
      for (var i = 0; i < arr.length; ++i)
        if (arr[i] == f) { arr.splice(i, 1); break; }
    }
  }

  function signal(emitter, type /*, values...*/) {
    var arr = emitter._handlers && emitter._handlers[type];
    if (!arr) return;
    var args = Array.prototype.slice.call(arguments, 2);
    for (var i = 0; i < arr.length; ++i) arr[i].apply(null, args);
  }

  var delayedCallbacks, delayedCallbackDepth = 0;
  function signalLater(emitter, type /*, values...*/) {
    var arr = emitter._handlers && emitter._handlers[type];
    if (!arr) return;
    var args = Array.prototype.slice.call(arguments, 2);
    if (!delayedCallbacks) {
      ++delayedCallbackDepth;
      delayedCallbacks = [];
      setTimeout(fireDelayed, 0);
    }
    function bnd(f) {return function(){f.apply(null, args);};};
    for (var i = 0; i < arr.length; ++i)
      delayedCallbacks.push(bnd(arr[i]));
  }

  function signalDOMEvent(cm, e, override) {
    signal(cm, override || e.type, cm, e);
    return e_defaultPrevented(e) || e.codemirrorIgnore;
  }

  function fireDelayed() {
    --delayedCallbackDepth;
    var delayed = delayedCallbacks;
    delayedCallbacks = null;
    for (var i = 0; i < delayed.length; ++i) delayed[i]();
  }

  function hasHandler(emitter, type) {
    var arr = emitter._handlers && emitter._handlers[type];
    return arr && arr.length > 0;
  }

  CodeMirror.on = on; CodeMirror.off = off; CodeMirror.signal = signal;

  function eventMixin(ctor) {
    ctor.prototype.on = function(type, f) {on(this, type, f);};
    ctor.prototype.off = function(type, f) {off(this, type, f);};
  }

  // MISC UTILITIES

  // Number of pixels added to scroller and sizer to hide scrollbar
  var scrollerCutOff = 30;

  // Returned or thrown by various protocols to signal 'I'm not
  // handling this'.
  var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}};

  function Delayed() {this.id = null;}
  Delayed.prototype = {set: function(ms, f) {clearTimeout(this.id); this.id = setTimeout(f, ms);}};

  // Counts the column offset in a string, taking tabs into account.
  // Used mostly to find indentation.
  function countColumn(string, end, tabSize, startIndex, startValue) {
    if (end == null) {
      end = string.search(/[^\s\u00a0]/);
      if (end == -1) end = string.length;
    }
    for (var i = startIndex || 0, n = startValue || 0; i < end; ++i) {
      if (string.charAt(i) == "\t") n += tabSize - (n % tabSize);
      else ++n;
    }
    return n;
  }
  CodeMirror.countColumn = countColumn;

  var spaceStrs = [""];
  function spaceStr(n) {
    while (spaceStrs.length <= n)
      spaceStrs.push(lst(spaceStrs) + " ");
    return spaceStrs[n];
  }

  function lst(arr) { return arr[arr.length-1]; }

  function selectInput(node) {
    if (ios) { // Mobile Safari apparently has a bug where select() is broken.
      node.selectionStart = 0;
      node.selectionEnd = node.value.length;
    } else {
      // Suppress mysterious IE10 errors
      try { node.select(); }
      catch(_e) {}
    }
  }

  function indexOf(collection, elt) {
    if (collection.indexOf) return collection.indexOf(elt);
    for (var i = 0, e = collection.length; i < e; ++i)
      if (collection[i] == elt) return i;
    return -1;
  }

  function createObj(base, props) {
    function Obj() {}
    Obj.prototype = base;
    var inst = new Obj();
    if (props) copyObj(props, inst);
    return inst;
  }

  function copyObj(obj, target) {
    if (!target) target = {};
    for (var prop in obj) if (obj.hasOwnProperty(prop)) target[prop] = obj[prop];
    return target;
  }

  function emptyArray(size) {
    for (var a = [], i = 0; i < size; ++i) a.push(undefined);
    return a;
  }

  function bind(f) {
    var args = Array.prototype.slice.call(arguments, 1);
    return function(){return f.apply(null, args);};
  }

  var nonASCIISingleCaseWordChar = /[\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/;
  function isWordChar(ch) {
    return /\w/.test(ch) || ch > "\x80" &&
      (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch));
  }

  function isEmpty(obj) {
    for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false;
    return true;
  }

  var isExtendingChar = /[\u0300-\u036F\u0483-\u0487\u0488-\u0489\u0591-\u05BD\u05BF\u05C1-\u05C2\u05C4-\u05C5\u05C7\u0610-\u061A\u064B-\u065F\u0670\u06D6-\u06DC\u06DF-\u06E4\u06E7-\u06E8\u06EA-\u06ED\uA66F\uA670-\uA672\uA674-\uA67D\uA69F\udc00-\udfff]/;

  // DOM UTILITIES

  function elt(tag, content, className, style) {
    var e = document.createElement(tag);
    if (className) e.className = className;
    if (style) e.style.cssText = style;
    if (typeof content == "string") setTextContent(e, content);
    else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]);
    return e;
  }

  function removeChildren(e) {
    for (var count = e.childNodes.length; count > 0; --count)
      e.removeChild(e.firstChild);
    return e;
  }

  function removeChildrenAndAdd(parent, e) {
    return removeChildren(parent).appendChild(e);
  }

  function setTextContent(e, str) {
    if (ie_lt9) {
      e.innerHTML = "";
      e.appendChild(document.createTextNode(str));
    } else e.textContent = str;
  }

  function getRect(node) {
    return node.getBoundingClientRect();
  }
  CodeMirror.replaceGetRect = function(f) { getRect = f; };

  // FEATURE DETECTION

  // Detect drag-and-drop
  var dragAndDrop = function() {
    // There is *some* kind of drag-and-drop support in IE6-8, but I
    // couldn't get it to work yet.
    if (ie_lt9) return false;
    var div = elt('div');
    return "draggable" in div || "dragDrop" in div;
  }();

  // For a reason I have yet to figure out, some browsers disallow
  // word wrapping between certain characters *only* if a new inline
  // element is started between them. This makes it hard to reliably
  // measure the position of things, since that requires inserting an
  // extra span. This terribly fragile set of tests matches the
  // character combinations that suffer from this phenomenon on the
  // various browsers.
  function spanAffectsWrapping() { return false; }
  if (gecko) // Only for "$'"
    spanAffectsWrapping = function(str, i) {
      return str.charCodeAt(i - 1) == 36 && str.charCodeAt(i) == 39;
    };
  else if (safari && !/Version\/([6-9]|\d\d)\b/.test(navigator.userAgent))
    spanAffectsWrapping = function(str, i) {
      return /\-[^ \-?]|\?[^ !\'\"\),.\-\/:;\?\]\}]/.test(str.slice(i - 1, i + 1));
    };
  else if (webkit && /Chrome\/(?:29|[3-9]\d|\d\d\d)\./.test(navigator.userAgent))
    spanAffectsWrapping = function(str, i) {
      var code = str.charCodeAt(i - 1);
      return code >= 8208 && code <= 8212;
    };
  else if (webkit)
    spanAffectsWrapping = function(str, i) {
      if (i > 1 && str.charCodeAt(i - 1) == 45) {
        if (/\w/.test(str.charAt(i - 2)) && /[^\-?\.]/.test(str.charAt(i))) return true;
        if (i > 2 && /[\d\.,]/.test(str.charAt(i - 2)) && /[\d\.,]/.test(str.charAt(i))) return false;
      }
      return /[~!#%&*)=+}\]\\|\"\.>,:;][({[<]|-[^\-?\.\u2010-\u201f\u2026]|\?[\w~`@#$%\^&*(_=+{[|><]|…[\w~`@#$%\^&*(_=+{[><]/.test(str.slice(i - 1, i + 1));
    };

  var knownScrollbarWidth;
  function scrollbarWidth(measure) {
    if (knownScrollbarWidth != null) return knownScrollbarWidth;
    var test = elt("div", null, null, "width: 50px; height: 50px; overflow-x: scroll");
    removeChildrenAndAdd(measure, test);
    if (test.offsetWidth)
      knownScrollbarWidth = test.offsetHeight - test.clientHeight;
    return knownScrollbarWidth || 0;
  }

  var zwspSupported;
  function zeroWidthElement(measure) {
    if (zwspSupported == null) {
      var test = elt("span", "\u200b");
      removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")]));
      if (measure.firstChild.offsetHeight != 0)
        zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !ie_lt8;
    }
    if (zwspSupported) return elt("span", "\u200b");
    else return elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px");
  }

  // See if "".split is the broken IE version, if so, provide an
  // alternative way to split lines.
  var splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) {
    var pos = 0, result = [], l = string.length;
    while (pos <= l) {
      var nl = string.indexOf("\n", pos);
      if (nl == -1) nl = string.length;
      var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl);
      var rt = line.indexOf("\r");
      if (rt != -1) {
        result.push(line.slice(0, rt));
        pos += rt + 1;
      } else {
        result.push(line);
        pos = nl + 1;
      }
    }
    return result;
  } : function(string){return string.split(/\r\n?|\n/);};
  CodeMirror.splitLines = splitLines;

  var hasSelection = window.getSelection ? function(te) {
    try { return te.selectionStart != te.selectionEnd; }
    catch(e) { return false; }
  } : function(te) {
    try {var range = te.ownerDocument.selection.createRange();}
    catch(e) {}
    if (!range || range.parentElement() != te) return false;
    return range.compareEndPoints("StartToEnd", range) != 0;
  };

  var hasCopyEvent = (function() {
    var e = elt("div");
    if ("oncopy" in e) return true;
    e.setAttribute("oncopy", "return;");
    return typeof e.oncopy == 'function';
  })();

  // KEY NAMING

  var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt",
                  19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End",
                  36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert",
                  46: "Delete", 59: ";", 91: "Mod", 92: "Mod", 93: "Mod", 109: "-", 107: "=", 127: "Delete",
                  186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\",
                  221: "]", 222: "'", 63276: "PageUp", 63277: "PageDown", 63275: "End", 63273: "Home",
                  63234: "Left", 63232: "Up", 63235: "Right", 63233: "Down", 63302: "Insert", 63272: "Delete"};
  CodeMirror.keyNames = keyNames;
  (function() {
    // Number keys
    for (var i = 0; i < 10; i++) keyNames[i + 48] = String(i);
    // Alphabetic keys
    for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i);
    // Function keys
    for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i;
  })();

  // BIDI HELPERS

  function iterateBidiSections(order, from, to, f) {
    if (!order) return f(from, to, "ltr");
    var found = false;
    for (var i = 0; i < order.length; ++i) {
      var part = order[i];
      if (part.from < to && part.to > from || from == to && part.to == from) {
        f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr");
        found = true;
      }
    }
    if (!found) f(from, to, "ltr");
  }

  function bidiLeft(part) { return part.level % 2 ? part.to : part.from; }
  function bidiRight(part) { return part.level % 2 ? part.from : part.to; }

  function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; }
  function lineRight(line) {
    var order = getOrder(line);
    if (!order) return line.text.length;
    return bidiRight(lst(order));
  }

  function lineStart(cm, lineN) {
    var line = getLine(cm.doc, lineN);
    var visual = visualLine(cm.doc, line);
    if (visual != line) lineN = lineNo(visual);
    var order = getOrder(visual);
    var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual);
    return Pos(lineN, ch);
  }
  function lineEnd(cm, lineN) {
    var merged, line;
    while (merged = collapsedSpanAtEnd(line = getLine(cm.doc, lineN)))
      lineN = merged.find().to.line;
    var order = getOrder(line);
    var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line);
    return Pos(lineN, ch);
  }

  function compareBidiLevel(order, a, b) {
    var linedir = order[0].level;
    if (a == linedir) return true;
    if (b == linedir) return false;
    return a < b;
  }
  var bidiOther;
  function getBidiPartAt(order, pos) {
    for (var i = 0, found; i < order.length; ++i) {
      var cur = order[i];
      if (cur.from < pos && cur.to > pos) { bidiOther = null; return i; }
      if (cur.from == pos || cur.to == pos) {
        if (found == null) {
          found = i;
        } else if (compareBidiLevel(order, cur.level, order[found].level)) {
          bidiOther = found;
          return i;
        } else {
          bidiOther = i;
          return found;
        }
      }
    }
    bidiOther = null;
    return found;
  }

  function moveInLine(line, pos, dir, byUnit) {
    if (!byUnit) return pos + dir;
    do pos += dir;
    while (pos > 0 && isExtendingChar.test(line.text.charAt(pos)));
    return pos;
  }

  // This is somewhat involved. It is needed in order to move
  // 'visually' through bi-directional text -- i.e., pressing left
  // should make the cursor go left, even when in RTL text. The
  // tricky part is the 'jumps', where RTL and LTR text touch each
  // other. This often requires the cursor offset to move more than
  // one unit, in order to visually move one unit.
  function moveVisually(line, start, dir, byUnit) {
    var bidi = getOrder(line);
    if (!bidi) return moveLogically(line, start, dir, byUnit);
    var pos = getBidiPartAt(bidi, start), part = bidi[pos];
    var target = moveInLine(line, start, part.level % 2 ? -dir : dir, byUnit);

    for (;;) {
      if (target > part.from && target < part.to) return target;
      if (target == part.from || target == part.to) {
        if (getBidiPartAt(bidi, target) == pos) return target;
        part = bidi[pos += dir];
        return (dir > 0) == part.level % 2 ? part.to : part.from;
      } else {
        part = bidi[pos += dir];
        if (!part) return null;
        if ((dir > 0) == part.level % 2)
          target = moveInLine(line, part.to, -1, byUnit);
        else
          target = moveInLine(line, part.from, 1, byUnit);
      }
    }
  }

  function moveLogically(line, start, dir, byUnit) {
    var target = start + dir;
    if (byUnit) while (target > 0 && isExtendingChar.test(line.text.charAt(target))) target += dir;
    return target < 0 || target > line.text.length ? null : target;
  }

  // Bidirectional ordering algorithm
  // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm
  // that this (partially) implements.

  // One-char codes used for character types:
  // L (L):   Left-to-Right
  // R (R):   Right-to-Left
  // r (AL):  Right-to-Left Arabic
  // 1 (EN):  European Number
  // + (ES):  European Number Separator
  // % (ET):  European Number Terminator
  // n (AN):  Arabic Number
  // , (CS):  Common Number Separator
  // m (NSM): Non-Spacing Mark
  // b (BN):  Boundary Neutral
  // s (B):   Paragraph Separator
  // t (S):   Segment Separator
  // w (WS):  Whitespace
  // N (ON):  Other Neutrals

  // Returns null if characters are ordered as they appear
  // (left-to-right), or an array of sections ({from, to, level}
  // objects) in the order in which they occur visually.
  var bidiOrdering = (function() {
    // Character types for codepoints 0 to 0xff
    var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLL";
    // Character types for codepoints 0x600 to 0x6ff
    var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmmrrrrrrrrrrrrrrrrrr";
    function charType(code) {
      if (code <= 0xff) return lowTypes.charAt(code);
      else if (0x590 <= code && code <= 0x5f4) return "R";
      else if (0x600 <= code && code <= 0x6ff) return arabicTypes.charAt(code - 0x600);
      else if (0x700 <= code && code <= 0x8ac) return "r";
      else return "L";
    }

    var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/;
    var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/;
    // Browsers seem to always treat the boundaries of block elements as being L.
    var outerType = "L";

    return function(str) {
      if (!bidiRE.test(str)) return false;
      var len = str.length, types = [];
      for (var i = 0, type; i < len; ++i)
        types.push(type = charType(str.charCodeAt(i)));

      // W1. Examine each non-spacing mark (NSM) in the level run, and
      // change the type of the NSM to the type of the previous
      // character. If the NSM is at the start of the level run, it will
      // get the type of sor.
      for (var i = 0, prev = outerType; i < len; ++i) {
        var type = types[i];
        if (type == "m") types[i] = prev;
        else prev = type;
      }

      // W2. Search backwards from each instance of a European number
      // until the first strong type (R, L, AL, or sor) is found. If an
      // AL is found, change the type of the European number to Arabic
      // number.
      // W3. Change all ALs to R.
      for (var i = 0, cur = outerType; i < len; ++i) {
        var type = types[i];
        if (type == "1" && cur == "r") types[i] = "n";
        else if (isStrong.test(type)) { cur = type; if (type == "r") types[i] = "R"; }
      }

      // W4. A single European separator between two European numbers
      // changes to a European number. A single common separator between
      // two numbers of the same type changes to that type.
      for (var i = 1, prev = types[0]; i < len - 1; ++i) {
        var type = types[i];
        if (type == "+" && prev == "1" && types[i+1] == "1") types[i] = "1";
        else if (type == "," && prev == types[i+1] &&
                 (prev == "1" || prev == "n")) types[i] = prev;
        prev = type;
      }

      // W5. A sequence of European terminators adjacent to European
      // numbers changes to all European numbers.
      // W6. Otherwise, separators and terminators change to Other
      // Neutral.
      for (var i = 0; i < len; ++i) {
        var type = types[i];
        if (type == ",") types[i] = "N";
        else if (type == "%") {
          for (var end = i + 1; end < len && types[end] == "%"; ++end) {}
          var replace = (i && types[i-1] == "!") || (end < len - 1 && types[end] == "1") ? "1" : "N";
          for (var j = i; j < end; ++j) types[j] = replace;
          i = end - 1;
        }
      }

      // W7. Search backwards from each instance of a European number
      // until the first strong type (R, L, or sor) is found. If an L is
      // found, then change the type of the European number to L.
      for (var i = 0, cur = outerType; i < len; ++i) {
        var type = types[i];
        if (cur == "L" && type == "1") types[i] = "L";
        else if (isStrong.test(type)) cur = type;
      }

      // N1. A sequence of neutrals takes the direction of the
      // surrounding strong text if the text on both sides has the same
      // direction. European and Arabic numbers act as if they were R in
      // terms of their influence on neutrals. Start-of-level-run (sor)
      // and end-of-level-run (eor) are used at level run boundaries.
      // N2. Any remaining neutrals take the embedding direction.
      for (var i = 0; i < len; ++i) {
        if (isNeutral.test(types[i])) {
          for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {}
          var before = (i ? types[i-1] : outerType) == "L";
          var after = (end < len - 1 ? types[end] : outerType) == "L";
          var replace = before || after ? "L" : "R";
          for (var j = i; j < end; ++j) types[j] = replace;
          i = end - 1;
        }
      }

      // Here we depart from the documented algorithm, in order to avoid
      // building up an actual levels array. Since there are only three
      // levels (0, 1, 2) in an implementation that doesn't take
      // explicit embedding into account, we can build up the order on
      // the fly, without following the level-based algorithm.
      var order = [], m;
      for (var i = 0; i < len;) {
        if (countsAsLeft.test(types[i])) {
          var start = i;
          for (++i; i < len && countsAsLeft.test(types[i]); ++i) {}
          order.push({from: start, to: i, level: 0});
        } else {
          var pos = i, at = order.length;
          for (++i; i < len && types[i] != "L"; ++i) {}
          for (var j = pos; j < i;) {
            if (countsAsNum.test(types[j])) {
              if (pos < j) order.splice(at, 0, {from: pos, to: j, level: 1});
              var nstart = j;
              for (++j; j < i && countsAsNum.test(types[j]); ++j) {}
              order.splice(at, 0, {from: nstart, to: j, level: 2});
              pos = j;
            } else ++j;
          }
          if (pos < i) order.splice(at, 0, {from: pos, to: i, level: 1});
        }
      }
      if (order[0].level == 1 && (m = str.match(/^\s+/))) {
        order[0].from = m[0].length;
        order.unshift({from: 0, to: m[0].length, level: 0});
      }
      if (lst(order).level == 1 && (m = str.match(/\s+$/))) {
        lst(order).to -= m[0].length;
        order.push({from: len - m[0].length, to: len, level: 0});
      }
      if (order[0].level != lst(order).level)
        order.push({from: len, to: len, level: order[0].level});

      return order;
    };
  })();

  // THE END

  CodeMirror.version = "3.18.0";

  return CodeMirror;
})();

define("vendor/codemirror", function(){});

CodeMirror.defineMode("latex", function() {
	return {
		token: function(stream) {
			var next = stream.next()
			if (next == "\\") {
				if (stream.peek() == "(") {
					// Inline maths
					stream.next()
					var m;
					if ( m = stream.match(/.*?\\\)/) ) {
						// If we hit another \( then back up, since '\( foo \( bar \)'
						// should only treat '\( bar \)' as math
						if ( m[0].match(/\\\(/) ) {
							stream.backUp(m[0].length);
							return "command"
						}
						return "math"
					} else {
						return "command"
					}
				} else if (stream.eatWhile(/[a-zA-Z]/)) {
					// A long command, like \foo
					return "command"
				} else {
					// A single character command like \$
					stream.next();
					return "command"
				}
			} else if (next == "$") {
				if (stream.match(/.*?[^\\]\$/)) {
					return "math"
				} else {
					return ""
				}
			} else if (next == "[" || next == "]" || next == "{" || next == "}") {
				return "bracket"
			} else {
				return ""
			}
		}
	}
});

define("vendor/mode/latex", function(){});

(function() {
  CodeMirror.defineOption("placeholder", "", function(cm, val, old) {
    var prev = old && old != CodeMirror.Init;
    if (val && !prev) {
      cm.on("blur", onBlur);
      cm.on("change", onChange);
      onChange(cm);
    } else if (!val && prev) {
      cm.off("blur", onBlur);
      cm.off("change", onChange);
      clearPlaceholder(cm);
      var wrapper = cm.getWrapperElement();
      wrapper.className = wrapper.className.replace(" CodeMirror-empty", "");
    }

    if (val && !cm.hasFocus()) onBlur(cm);
  });

  function clearPlaceholder(cm) {
    if (cm.state.placeholder) {
      cm.state.placeholder.parentNode.removeChild(cm.state.placeholder);
      cm.state.placeholder = null;
    }
  }
  function setPlaceholder(cm) {
    clearPlaceholder(cm);
    var elt = cm.state.placeholder = document.createElement("pre");
    elt.style.cssText = "height: 0; overflow: visible";
    elt.className = "CodeMirror-placeholder";
    elt.appendChild(document.createTextNode(cm.getOption("placeholder")));
    cm.display.lineSpace.insertBefore(elt, cm.display.lineSpace.firstChild);
  }

  function onBlur(cm) {
    if (isEmpty(cm)) setPlaceholder(cm);
  }
  function onChange(cm) {
    var wrapper = cm.getWrapperElement(), empty = isEmpty(cm);
    wrapper.className = wrapper.className.replace(" CodeMirror-empty", "") + (empty ? " CodeMirror-empty" : "");

    if (empty) setPlaceholder(cm);
    else clearPlaceholder(cm);
  }

  function isEmpty(cm) {
    return (cm.lineCount() === 1) && (cm.getLine(0) === "");
  }
})();

define("vendor/addons/placeholder", function(){});

/*!
 * bootstrap-select v1.3.5
 * http://silviomoreto.github.io/bootstrap-select/
 *
 * Copyright 2013 bootstrap-select
 * Licensed under the MIT license
 */

!function($) {

    

    $.expr[":"].icontains = function(obj, index, meta) {
        return $(obj).text().toUpperCase().indexOf(meta[3].toUpperCase()) >= 0;
    };

    var Selectpicker = function(element, options, e) {
        if (e) {
            e.stopPropagation();
            e.preventDefault();
        }
        this.$element = $(element);
        this.$newElement = null;
        this.$button = null;
        this.$menu = null;

        //Merge defaults, options and data-attributes to make our options
        this.options = $.extend({}, $.fn.selectpicker.defaults, this.$element.data(), typeof options == 'object' && options);

        //If we have no title yet, check the attribute 'title' (this is missed by jq as its not a data-attribute
        if (this.options.title == null) {
            this.options.title = this.$element.attr('title');
        }

        //Expose public methods
        this.val = Selectpicker.prototype.val;
        this.render = Selectpicker.prototype.render;
        this.refresh = Selectpicker.prototype.refresh;
        this.setStyle = Selectpicker.prototype.setStyle;
        this.selectAll = Selectpicker.prototype.selectAll;
        this.deselectAll = Selectpicker.prototype.deselectAll;
        this.init();
    };

    Selectpicker.prototype = {

        constructor: Selectpicker,

        init: function(e) {
            this.$element.hide();
            this.multiple = this.$element.prop('multiple');
            var id = this.$element.attr('id');
            this.$newElement = this.createView();
            this.$element.after(this.$newElement);
            this.$menu = this.$newElement.find('> .dropdown-menu');
            this.$button = this.$newElement.find('> button');
            this.$searchbox = this.$newElement.find('input');

            if (id !== undefined) {
                var that = this;
                this.$button.attr('data-id', id);
                $('label[for="' + id + '"]').click(function(e) {
                    e.preventDefault();
                    that.$button.focus();
                });
            }

            this.checkDisabled();
            this.clickListener();
            this.liveSearchListener();
            this.render();
            this.liHeight();
            this.setStyle();
            this.setWidth();
            if (this.options.container) {
                this.selectPosition();
            }
            this.$menu.data('this', this);
            this.$newElement.data('this', this);
        },

        createDropdown: function() {
            //If we are multiple, then add the show-tick class by default
            var multiple = this.multiple ? ' show-tick' : '';
            var header = this.options.header ? '<div class="popover-title"><button type="button" class="close" aria-hidden="true">&times;</button>' + this.options.header + '</div>' : '';
            var searchbox = this.options.liveSearch ? '<div class="bootstrap-select-searchbox"><input type="text" class="input-block-level form-control" /></div>' : '';
            var drop =
                "<div class='btn-group bootstrap-select" + multiple + "'>" +
                    "<button type='button' class='btn dropdown-toggle' data-toggle='dropdown'>" +
                        "<div class='filter-option pull-left'></div>&nbsp;" +
                        "<div class='caret'></div>" +
                    "</button>" +
                    "<div class='dropdown-menu open'>" +
                        header +
                        searchbox +
                        "<ul class='dropdown-menu inner' role='menu'>" +
                        "</ul>" +
                    "</div>" +
                "</div>";

            return $(drop);
        },

        createView: function() {
            var $drop = this.createDropdown();
            var $li = this.createLi();
            $drop.find('ul').append($li);
            return $drop;
        },

        reloadLi: function() {
            //Remove all children.
            this.destroyLi();
            //Re build
            var $li = this.createLi();
            this.$menu.find('ul').append( $li );
        },

        destroyLi: function() {
            this.$menu.find('li').remove();
        },

        createLi: function() {
            var that = this,
                _liA = [],
                _liHtml = '';

            this.$element.find('option').each(function(index) {
                var $this = $(this);

                //Get the class and text for the option
                var optionClass = $this.attr("class") || '';
                var inline = $this.attr("style") || '';
                var text =  $this.data('content') ? $this.data('content') : $this.html();
                var subtext = $this.data('subtext') !== undefined ? '<small class="muted text-muted">' + $this.data('subtext') + '</small>' : '';
                var icon = $this.data('icon') !== undefined ? '<i class="glyphicon '+$this.data('icon')+'"></i> ' : '';
                if (icon !== '' && ($this.is(':disabled') || $this.parent().is(':disabled'))) {
                    icon = '<span>'+icon+'</span>';
                }

                if (!$this.data('content')) {
                    //Prepend any icon and append any subtext to the main text.
                    text = icon + '<span class="text">' + text + subtext + '</span>';
                }

                if (that.options.hideDisabled && ($this.is(':disabled') || $this.parent().is(':disabled'))) {
                    _liA.push('<a style="min-height: 0; padding: 0"></a>');
                } else if ($this.parent().is('optgroup') && $this.data('divider') != true) {
                    if ($this.index() == 0) {
                        //Get the opt group label
                        var label = $this.parent().attr('label');
                        var labelSubtext = $this.parent().data('subtext') !== undefined ? '<small class="muted text-muted">'+$this.parent().data('subtext')+'</small>' : '';
                        var labelIcon = $this.parent().data('icon') ? '<i class="'+$this.parent().data('icon')+'"></i> ' : '';
                        label = labelIcon + '<span class="text">' + label + labelSubtext + '</span>';

                        if ($this[0].index != 0) {
                            _liA.push(
                                '<div class="div-contain"><div class="divider"></div></div>'+
                                '<dt>'+label+'</dt>'+
                                that.createA(text, "opt " + optionClass, inline )
                                );
                        } else {
                            _liA.push(
                                '<dt>'+label+'</dt>'+
                                that.createA(text, "opt " + optionClass, inline ));
                        }
                    } else {
                         _liA.push(that.createA(text, "opt " + optionClass, inline ));
                    }
                } else if ($this.data('divider') == true) {
                    _liA.push('<div class="div-contain"><div class="divider"></div></div>');
                } else if ($(this).data('hidden') == true) {
                    _liA.push('');
                } else {
                    _liA.push(that.createA(text, optionClass, inline ));
                }
            });

            $.each(_liA, function(i, item) {
                _liHtml += "<li rel=" + i + ">" + item + "</li>";
            });

            //If we are not multiple, and we dont have a selected item, and we dont have a title, select the first element so something is set in the button
            if (!this.multiple && this.$element.find('option:selected').length==0 && !this.options.title) {
                this.$element.find('option').eq(0).prop('selected', true).attr('selected', 'selected');
            }

            return $(_liHtml);
        },

        createA: function(text, classes, inline) {
            return '<a tabindex="0" class="'+classes+'" style="'+inline+'">' +
                 text +
                 '<i class="glyphicon glyphicon-ok icon-ok check-mark"></i>' +
                 '</a>';
        },

        render: function() {
            var that = this;

            //Update the LI to match the SELECT
            this.$element.find('option').each(function(index) {
               that.setDisabled(index, $(this).is(':disabled') || $(this).parent().is(':disabled') );
               that.setSelected(index, $(this).is(':selected') );
            });

            this.tabIndex();

            var selectedItems = this.$element.find('option:selected').map(function(index,value) {
                var $this = $(this);
                var icon = $this.data('icon') && that.options.showIcon ? '<i class="glyphicon ' + $this.data('icon') + '"></i> ' : '';
                var subtext;
                if (that.options.showSubtext && $this.attr('data-subtext') && !that.multiple) {
                    subtext = ' <small class="muted text-muted">'+$this.data('subtext') +'</small>';
                } else {
                    subtext = '';
                }
                if ($this.data('content') && that.options.showContent) {
                    return $this.data('content');
                } else if ($this.attr('title') != undefined) {
                    return $this.attr('title');
                } else {
                    return icon + $this.html() + subtext;
                }
            }).toArray();

            //Fixes issue in IE10 occurring when no default option is selected and at least one option is disabled
            //Convert all the values into a comma delimited string
            var title = !this.multiple ? selectedItems[0] : selectedItems.join(", ");

            //If this is multi select, and the selectText type is count, the show 1 of 2 selected etc..
            if (this.multiple && this.options.selectedTextFormat.indexOf('count') > -1) {
                var max = this.options.selectedTextFormat.split(">");
                var notDisabled = this.options.hideDisabled ? ':not([disabled])' : '';
                if ( (max.length>1 && selectedItems.length > max[1]) || (max.length==1 && selectedItems.length>=2)) {
                    title = this.options.countSelectedText.replace('{0}', selectedItems.length).replace('{1}', this.$element.find('option:not([data-divider="true"]):not([data-hidden="true"])'+notDisabled).length);
                }
             }

            //If we dont have a title, then use the default, or if nothing is set at all, use the not selected text
            if (!title) {
                title = this.options.title != undefined ? this.options.title : this.options.noneSelectedText;
            }

            this.$newElement.find('.filter-option').html(title);
        },

        setStyle: function(style, status) {
            if (this.$element.attr('class')) {
                this.$newElement.addClass(this.$element.attr('class').replace(/selectpicker|mobile-device/gi, ''));
            }

            var buttonClass = style ? style : this.options.style;

            if (status == 'add') {
                this.$button.addClass(buttonClass);
            } else if (status == 'remove') {
                this.$button.removeClass(buttonClass);
            } else {
                this.$button.removeClass(this.options.style);
                this.$button.addClass(buttonClass);
            }
        },

        liHeight: function() {
            var selectClone = this.$newElement.clone();
            selectClone.appendTo('body');
            var $menuClone = selectClone.addClass('open').find('> .dropdown-menu');
            var liHeight = $menuClone.find('li > a').outerHeight();
            var headerHeight = this.options.header ? $menuClone.find('.popover-title').outerHeight() : 0;
            var searchHeight = this.options.liveSearch ? $menuClone.find('.bootstrap-select-searchbox').outerHeight() : 0;
            selectClone.remove();
            this.$newElement.data('liHeight', liHeight).data('headerHeight', headerHeight).data('searchHeight', searchHeight);
        },

        setSize: function() {
            var that = this,
                menu = this.$menu,
                menuInner = menu.find('.inner'),
                menuA = menuInner.find('li > a'),
                selectHeight = this.$newElement.outerHeight(),
                liHeight = this.$newElement.data('liHeight'),
                headerHeight = this.$newElement.data('headerHeight'),
                searchHeight = this.$newElement.data('searchHeight'),
                divHeight = menu.find('li .divider').outerHeight(true),
                menuPadding = parseInt(menu.css('padding-top')) +
                              parseInt(menu.css('padding-bottom')) +
                              parseInt(menu.css('border-top-width')) +
                              parseInt(menu.css('border-bottom-width')),
                notDisabled = this.options.hideDisabled ? ':not(.disabled)' : '',
                $window = $(window),
                menuExtras = menuPadding + parseInt(menu.css('margin-top')) + parseInt(menu.css('margin-bottom')) + 2,
                menuHeight,
                selectOffsetTop,
                selectOffsetBot,
                posVert = function() {
                    selectOffsetTop = that.$newElement.offset().top - $window.scrollTop();
                    selectOffsetBot = $window.height() - selectOffsetTop - selectHeight;
                };
                posVert();
                if (this.options.header) menu.css('padding-top', 0);

            if (this.options.size == 'auto') {
                var getSize = function() {
                    var minHeight;
                    posVert();
                    menuHeight = selectOffsetBot - menuExtras;
                    that.$newElement.toggleClass('dropup', (selectOffsetTop > selectOffsetBot) && (menuHeight - menuExtras) < menu.height() && that.options.dropupAuto);
                    if (that.$newElement.hasClass('dropup')) {
                        menuHeight = selectOffsetTop - menuExtras;
                    }
                    if ((menu.find('li').length + menu.find('dt').length) > 3) {
                        minHeight = liHeight*3 + menuExtras - 2;
                    } else {
                        minHeight = 0;
                    }
                    menu.css({'max-height' : menuHeight + 'px', 'overflow' : 'hidden', 'min-height' : minHeight + 'px'});
                    menuInner.css({'max-height' : menuHeight - headerHeight - searchHeight- menuPadding + 'px', 'overflow-y' : 'auto', 'min-height' : minHeight - menuPadding + 'px'});
                };
                getSize();
                $(window).resize(getSize);
                $(window).scroll(getSize);
            } else if (this.options.size && this.options.size != 'auto' && menu.find('li'+notDisabled).length > this.options.size) {
                var optIndex = menu.find("li"+notDisabled+" > *").filter(':not(.div-contain)').slice(0,this.options.size).last().parent().index();
                var divLength = menu.find("li").slice(0,optIndex + 1).find('.div-contain').length;
                menuHeight = liHeight*this.options.size + divLength*divHeight + menuPadding;
                this.$newElement.toggleClass('dropup', (selectOffsetTop > selectOffsetBot) && menuHeight < menu.height() && this.options.dropupAuto);
                menu.css({'max-height' : menuHeight + headerHeight + searchHeight + 'px', 'overflow' : 'hidden'});
                menuInner.css({'max-height' : menuHeight - menuPadding + 'px', 'overflow-y' : 'auto'});
            }
        },

        setWidth: function() {
            if (this.options.width == 'auto') {
                this.$menu.css('min-width', '0');

                // Get correct width if element hidden
                var selectClone = this.$newElement.clone().appendTo('body');
                var ulWidth = selectClone.find('> .dropdown-menu').css('width');
                selectClone.remove();

                this.$newElement.css('width', ulWidth);
            } else if (this.options.width == 'fit') {
                // Remove inline min-width so width can be changed from 'auto'
                this.$menu.css('min-width', '');
                this.$newElement.css('width', '').addClass('fit-width');
            } else if (this.options.width) {
                // Remove inline min-width so width can be changed from 'auto'
                this.$menu.css('min-width', '');
                this.$newElement.css('width', this.options.width);
            } else {
                // Remove inline min-width/width so width can be changed
                this.$menu.css('min-width', '');
                this.$newElement.css('width', '');
            }
            // Remove fit-width class if width is changed programmatically
            if (this.$newElement.hasClass('fit-width') && this.options.width !== 'fit') {
                this.$newElement.removeClass('fit-width');
            }
        },

        selectPosition: function() {
            var that = this,
                drop = "<div />",
                $drop = $(drop),
                pos,
                actualHeight,
                getPlacement = function($element) {
                    $drop.addClass($element.attr('class')).toggleClass('dropup', $element.hasClass('dropup'));
                    pos = $element.offset();
                    actualHeight = $element.hasClass('dropup') ? 0 : $element[0].offsetHeight;
                    $drop.css({'top' : pos.top + actualHeight, 'left' : pos.left, 'width' : $element[0].offsetWidth, 'position' : 'absolute'});
                };
            this.$newElement.on('click', function(e) {
                getPlacement($(this));
                $drop.appendTo(that.options.container);
                $drop.toggleClass('open', !$(this).hasClass('open'));
                $drop.append(that.$menu);
            });
            $(window).resize(function() {
                getPlacement(that.$newElement);
            });
            $(window).on('scroll', function(e) {
                getPlacement(that.$newElement);
            });
            $('html').on('click', function(e) {
                if ($(e.target).closest(that.$newElement).length < 1) {
                    $drop.removeClass('open');
                }
            });
        },

        mobile: function() {
            this.$element.addClass('mobile-device').appendTo(this.$newElement);
            if (this.options.container) this.$menu.hide();
        },

        refresh: function() {
            this.reloadLi();
            this.render();
            this.setWidth();
            this.setStyle();
            this.checkDisabled();
            this.liHeight();
        },
        
        update: function() {
            this.reloadLi();
            this.setWidth();
            this.setStyle();
            this.checkDisabled();
            this.liHeight();
        },

        setSelected: function(index, selected) {
            this.$menu.find('li').eq(index).toggleClass('selected', selected);
        },

        setDisabled: function(index, disabled) {
            if (disabled) {
                this.$menu.find('li').eq(index).addClass('disabled').find('a').attr('href','#').attr('tabindex',-1);
            } else {
                this.$menu.find('li').eq(index).removeClass('disabled').find('a').removeAttr('href').attr('tabindex',0);
            }
        },

        isDisabled: function() {
            return this.$element.is(':disabled');
        },

        checkDisabled: function() {
            var that = this;

            if (this.isDisabled()) {
                this.$button.addClass('disabled').attr('tabindex', -1);
            } else {
                if (this.$button.hasClass('disabled')) {
                    this.$button.removeClass('disabled');
                }

                if (this.$button.attr('tabindex') == -1) {
                    if (!this.$element.data('tabindex')) this.$button.removeAttr('tabindex');
                }
            }

            this.$button.click(function() {
                return !that.isDisabled();
            });
        },

        tabIndex: function() {
            if (this.$element.is('[tabindex]')) {
                this.$element.data('tabindex', this.$element.attr("tabindex"));
                this.$button.attr('tabindex', this.$element.data('tabindex'));
            }
        },

        clickListener: function() {
            var that = this;

            $('body').on('touchstart.dropdown', '.dropdown-menu', function(e) {
                e.stopPropagation();
            });

            this.$newElement.on('click', function() {
                that.setSize();
            });

            this.$menu.on('click', 'li a', function(e) {
                var clickedIndex = $(this).parent().index(),
                    $this = $(this).parent(),
                    prevValue = that.$element.val();

                //Dont close on multi choice menu
                if (that.multiple) {
                    e.stopPropagation();
                }

                e.preventDefault();

                //Dont run if we have been disabled
                if (!that.isDisabled() && !$(this).parent().hasClass('disabled')) {
                    var $options = that.$element.find('option');
                    var $option = $options.eq(clickedIndex);

                    //Deselect all others if not multi select box
                    if (!that.multiple) {
                        $options.prop('selected', false);
                        $option.prop('selected', true);
                    }
                    //Else toggle the one we have chosen if we are multi select.
                    else {
                        var state = $option.prop('selected');

                        $option.prop('selected', !state);
                    }

                    that.$button.focus();

                    // Trigger select 'change'
                    if (prevValue != that.$element.val()) {
                        that.$element.change();
                    }
                }
            });

            this.$menu.on('click', 'li.disabled a, li dt, li .div-contain, h3.popover-title', function(e) {
                if (e.target == this) {
                    e.preventDefault();
                    e.stopPropagation();
                    that.$button.focus();
                }
            });

            this.$searchbox.on('click', function(e) {
                e.stopPropagation();
            });

            this.$element.change(function() {
                that.render();
            });
        },

        liveSearchListener: function() {
            var that = this;

            this.$newElement.on('click.dropdown.data-api', function(e){
                if(that.options.liveSearch) {
                    setTimeout(function() {
                        that.$searchbox.focus();
                    }, 10);
                }
            });

            this.$searchbox.on('input', function() {
                if (that.$searchbox.val()) {
                    that.$menu.find('li').show().not(':icontains(' + that.$searchbox.val() + ')').hide();
                } else {
                    that.$menu.find('li').show();
                }
            });
        },

        val: function(value) {

            if (value != undefined) {
                this.$element.val( value );

                this.$element.change();
                return this.$element;
            } else {
                return this.$element.val();
            }
        },

        selectAll: function() {
            this.$element.find('option').prop('selected', true).attr('selected', 'selected');
            this.render();
        },

        deselectAll: function() {
            this.$element.find('option').prop('selected', false).removeAttr('selected');
            this.render();
        },

        keydown: function(e) {
            var $this,
                $items,
                $parent,
                index,
                next,
                first,
                last,
                prev,
                nextPrev,
                that;

            $this = $(this);

            $parent = $this.parent();

            that = $parent.data('this');

            if (that.options.container) $parent = that.$menu;

            $items = $('[role=menu] li:not(.divider):visible a', $parent);

            if (!$items.length) return;

            if (/(38|40)/.test(e.keyCode)) {

                index = $items.index($items.filter(':focus'));
                first = $items.parent(':not(.disabled)').first().index();
                last = $items.parent(':not(.disabled)').last().index();
                next = $items.eq(index).parent().nextAll(':not(.disabled)').eq(0).index();
                prev = $items.eq(index).parent().prevAll(':not(.disabled)').eq(0).index();
                nextPrev = $items.eq(next).parent().prevAll(':not(.disabled)').eq(0).index();

                if (e.keyCode == 38) {
                    if (index != nextPrev && index > prev) index = prev;
                    if (index < first) index = first;
                }

                if (e.keyCode == 40) {
                    if (index != nextPrev && index < next) index = next;
                    if (index > last) index = last;
                    if (index == -1) index = 0;
                }

                $items.eq(index).focus();
            } else {
                var keyCodeMap = {
                    48:"0", 49:"1", 50:"2", 51:"3", 52:"4", 53:"5", 54:"6", 55:"7", 56:"8", 57:"9", 59:";",
                    65:"a", 66:"b", 67:"c", 68:"d", 69:"e", 70:"f", 71:"g", 72:"h", 73:"i", 74:"j", 75:"k", 76:"l",
                    77:"m", 78:"n", 79:"o", 80:"p", 81:"q", 82:"r", 83:"s", 84:"t", 85:"u", 86:"v", 87:"w", 88:"x", 89:"y", 90:"z",
                    96:"0", 97:"1", 98:"2", 99:"3", 100:"4", 101:"5", 102:"6", 103:"7", 104:"8", 105:"9"
                };

                var keyIndex = [];

                $items.each(function() {
                    if ($(this).parent().is(':not(.disabled)')) {
                        if ($.trim($(this).text().toLowerCase()).substring(0,1) == keyCodeMap[e.keyCode]) {
                            keyIndex.push($(this).parent().index());
                        }
                    }
                });

                var count = $(document).data('keycount');
                count++;
                $(document).data('keycount',count);

                var prevKey = $.trim($(':focus').text().toLowerCase()).substring(0,1);

                if (prevKey != keyCodeMap[e.keyCode]) {
                    count = 1;
                    $(document).data('keycount',count);
                } else if (count >= keyIndex.length) {
                    $(document).data('keycount',0);
                }

                $items.eq(keyIndex[count - 1]).focus();
            }

            // select focused option if "Enter" or "Spacebar" are pressed
            if (/(13|32)/.test(e.keyCode)) {
                e.preventDefault();
                $(':focus').click();
                $(document).data('keycount',0);
            }
        },

        hide: function() {
            this.$newElement.hide();
        },

        show: function() {
            this.$newElement.show();
        },

        destroy: function() {
            this.$newElement.remove();
            this.$element.remove();
        }
    };

    $.fn.selectpicker = function(option, event) {
       //get the args of the outer function..
       var args = arguments;
       var value;
       var chain = this.each(function() {
            if ($(this).is('select')) {
                var $this = $(this),
                    data = $this.data('selectpicker'),
                    options = typeof option == 'object' && option;

                if (!data) {
                    $this.data('selectpicker', (data = new Selectpicker(this, options, event)));
                } else if (options) {
                    for(var i in options) {
                       data.options[i] = options[i];
                    }
                }

                if (typeof option == 'string') {
                    //Copy the value of option, as once we shift the arguments
                    //it also shifts the value of option.
                    var property = option;
                    if (data[property] instanceof Function) {
                        [].shift.apply(args);
                        value = data[property].apply(data, args);
                    } else {
                        value = data.options[property];
                    }
                }
            }
        });

        if (value != undefined) {
            return value;
        } else {
            return chain;
        }
    };

    $.fn.selectpicker.defaults = {
        style: 'btn-default',
        size: 'auto',
        title: null,
        selectedTextFormat : 'values',
        noneSelectedText : 'Nothing selected',
        countSelectedText: '{0} of {1} selected',
        width: false,
        container: false,
        hideDisabled: false,
        showSubtext: false,
        showIcon: true,
        showContent: true,
        dropupAuto: true,
        header: false,
        liveSearch: false
    };

    $(document)
        .data('keycount', 0)
        .on('keydown', '[data-toggle=dropdown], [role=menu]' , Selectpicker.prototype.keydown);

}(window.jQuery);

define("vendor/bootstrap-select", function(){});