overleaf/services/web/frontend/js/vendor/ace-1.4.12/ext-static_highlight.js

ace.define("ace/ext/static_highlight",[], function(require, exports, module) {
"use strict";

var EditSession = require("../edit_session").EditSession;
var TextLayer = require("../layer/text").Text;
var baseStyles = ".ace_static_highlight {\
font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', 'source-code-pro', 'Droid Sans Mono', monospace;\
font-size: 12px;\
white-space: pre-wrap\
}\
.ace_static_highlight .ace_gutter {\
width: 2em;\
text-align: right;\
padding: 0 3px 0 0;\
margin-right: 3px;\
contain: none;\
}\
.ace_static_highlight.ace_show_gutter .ace_line {\
padding-left: 2.6em;\
}\
.ace_static_highlight .ace_line { position: relative; }\
.ace_static_highlight .ace_gutter-cell {\
-moz-user-select: -moz-none;\
-khtml-user-select: none;\
-webkit-user-select: none;\
user-select: none;\
top: 0;\
bottom: 0;\
left: 0;\
position: absolute;\
}\
.ace_static_highlight .ace_gutter-cell:before {\
content: counter(ace_line, decimal);\
counter-increment: ace_line;\
}\
.ace_static_highlight {\
counter-reset: ace_line;\
}\
";
var config = require("../config");
var dom = require("../lib/dom");
var escapeHTML = require("../lib/lang").escapeHTML;

function Element(type) {
    this.type = type;
    this.style = {};
    this.textContent = "";
}
Element.prototype.cloneNode = function() {
    return this;
};
Element.prototype.appendChild = function(child) {
    this.textContent += child.toString();
};
Element.prototype.toString = function() {
    var stringBuilder = [];
    if (this.type != "fragment") {
        stringBuilder.push("<", this.type);
        if (this.className)
            stringBuilder.push(" class='", this.className, "'");
        var styleStr = [];
        for (var key in this.style) {
            styleStr.push(key, ":", this.style[key]);
        }
        if (styleStr.length)
            stringBuilder.push(" style='", styleStr.join(""), "'");
        stringBuilder.push(">");
    }

    if (this.textContent) {
        stringBuilder.push(this.textContent);
    }

    if (this.type != "fragment") {
        stringBuilder.push("</", this.type, ">");
    }
    
    return stringBuilder.join("");
};


var simpleDom = {
    createTextNode: function(textContent, element) {
        return escapeHTML(textContent);
    },
    createElement: function(type) {
        return new Element(type);
    },
    createFragment: function() {
        return new Element("fragment");
    }
};

var SimpleTextLayer = function() {
    this.config = {};
    this.dom = simpleDom;
};
SimpleTextLayer.prototype = TextLayer.prototype;

var highlight = function(el, opts, callback) {
    var m = el.className.match(/lang-(\w+)/);
    var mode = opts.mode || m && ("ace/mode/" + m[1]);
    if (!mode)
        return false;
    var theme = opts.theme || "ace/theme/textmate";
    
    var data = "";
    var nodes = [];

    if (el.firstElementChild) {
        var textLen = 0;
        for (var i = 0; i < el.childNodes.length; i++) {
            var ch = el.childNodes[i];
            if (ch.nodeType == 3) {
                textLen += ch.data.length;
                data += ch.data;
            } else {
                nodes.push(textLen, ch);
            }
        }
    } else {
        data = el.textContent;
        if (opts.trim)
            data = data.trim();
    }
    
    highlight.render(data, mode, theme, opts.firstLineNumber, !opts.showGutter, function (highlighted) {
        dom.importCssString(highlighted.css, "ace_highlight");
        el.innerHTML = highlighted.html;
        var container = el.firstChild.firstChild;
        for (var i = 0; i < nodes.length; i += 2) {
            var pos = highlighted.session.doc.indexToPosition(nodes[i]);
            var node = nodes[i + 1];
            var lineEl = container.children[pos.row];
            lineEl && lineEl.appendChild(node);
        }
        callback && callback();
    });
};
highlight.render = function(input, mode, theme, lineStart, disableGutter, callback) {
    var waiting = 1;
    var modeCache = EditSession.prototype.$modes;
    if (typeof theme == "string") {
        waiting++;
        config.loadModule(['theme', theme], function(m) {
            theme = m;
            --waiting || done();
        });
    }
    var modeOptions;
    if (mode && typeof mode === "object" && !mode.getTokenizer) {
        modeOptions = mode;
        mode = modeOptions.path;
    }
    if (typeof mode == "string") {
        waiting++;
        config.loadModule(['mode', mode], function(m) {
            if (!modeCache[mode] || modeOptions)
                modeCache[mode] = new m.Mode(modeOptions);
            mode = modeCache[mode];
            --waiting || done();
        });
    }
    function done() {
        var result = highlight.renderSync(input, mode, theme, lineStart, disableGutter);
        return callback ? callback(result) : result;
    }
    return --waiting || done();
};
highlight.renderSync = function(input, mode, theme, lineStart, disableGutter) {
    lineStart = parseInt(lineStart || 1, 10);

    var session = new EditSession("");
    session.setUseWorker(false);
    session.setMode(mode);

    var textLayer = new SimpleTextLayer();
    textLayer.setSession(session);
    Object.keys(textLayer.$tabStrings).forEach(function(k) {
        if (typeof textLayer.$tabStrings[k] == "string") {
            var el = simpleDom.createFragment();
            el.textContent = textLayer.$tabStrings[k];
            textLayer.$tabStrings[k] = el;
        }
    });

    session.setValue(input);
    var length =  session.getLength();
    
    var outerEl = simpleDom.createElement("div");
    outerEl.className = theme.cssClass;
    
    var innerEl = simpleDom.createElement("div");
    innerEl.className = "ace_static_highlight" + (disableGutter ? "" : " ace_show_gutter");
    innerEl.style["counter-reset"] = "ace_line " + (lineStart - 1);

    for (var ix = 0; ix < length; ix++) {
        var lineEl = simpleDom.createElement("div");
        lineEl.className = "ace_line";
        
        if (!disableGutter) {
            var gutterEl = simpleDom.createElement("span");
            gutterEl.className ="ace_gutter ace_gutter-cell";
            gutterEl.textContent = "";
            lineEl.appendChild(gutterEl);
        }
        textLayer.$renderLine(lineEl, ix, false);
        lineEl.textContent += "\n";
        innerEl.appendChild(lineEl);
    }
    outerEl.appendChild(innerEl);

    return {
        css: baseStyles + theme.cssText,
        html: outerEl.toString(),
        session: session
    };
};

module.exports = highlight;
module.exports.highlight = highlight;
});                (function() {
                    ace.require(["ace/ext/static_highlight"], function(m) {
                        if (typeof module == "object" && typeof exports == "object" && module) {
                            module.exports = m;
                        }
                    });
                })();