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351 lines
13 KiB
JavaScript
Executable file
351 lines
13 KiB
JavaScript
Executable file
/* ***** BEGIN LICENSE BLOCK *****
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* Distributed under the BSD license:
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*
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* Copyright (c) 2012, Ajax.org B.V.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Ajax.org B.V. nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL AJAX.ORG B.V. BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* ***** END LICENSE BLOCK ***** */
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define(function(require, exports, module) {
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"use strict";
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var HashHandler = require("./keyboard/hash_handler").HashHandler;
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var AcePopup = require("./autocomplete/popup").AcePopup;
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var util = require("./autocomplete/util");
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var event = require("./lib/event");
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var lang = require("./lib/lang");
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var snippetManager = require("./snippets").snippetManager;
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var Autocomplete = function() {
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this.keyboardHandler = new HashHandler();
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this.keyboardHandler.bindKeys(this.commands);
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this.blurListener = this.blurListener.bind(this);
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this.changeListener = this.changeListener.bind(this);
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this.mousedownListener = this.mousedownListener.bind(this);
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this.mousewheelListener = this.mousewheelListener.bind(this);
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this.changeTimer = lang.delayedCall(function() {
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this.updateCompletions(true);
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}.bind(this))
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};
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(function() {
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this.$init = function() {
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this.popup = new AcePopup(document.body || document.documentElement);
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this.popup.on("click", function(e) {
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this.insertMatch();
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e.stop();
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}.bind(this));
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};
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this.openPopup = function(editor, prefix, keepPopupPosition) {
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if (!this.popup)
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this.$init();
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this.popup.setData(this.completions.filtered);
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var renderer = editor.renderer;
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if (!keepPopupPosition) {
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this.popup.setRow(0);
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this.popup.setFontSize(editor.getFontSize());
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var lineHeight = renderer.layerConfig.lineHeight;
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var pos = renderer.$cursorLayer.getPixelPosition(this.base, true);
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pos.left -= this.popup.getTextLeftOffset();
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var rect = editor.container.getBoundingClientRect();
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pos.top += rect.top - renderer.layerConfig.offset;
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pos.left += rect.left - editor.renderer.scrollLeft;
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pos.left += renderer.$gutterLayer.gutterWidth;
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this.popup.show(pos, lineHeight);
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}
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};
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this.detach = function() {
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this.editor.keyBinding.removeKeyboardHandler(this.keyboardHandler);
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this.editor.off("changeSelection", this.changeListener);
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this.editor.off("blur", this.changeListener);
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this.editor.off("mousedown", this.mousedownListener);
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this.editor.off("mousewheel", this.mousewheelListener);
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this.changeTimer.cancel();
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if (this.popup)
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this.popup.hide();
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this.activated = false;
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this.completions = this.base = null;
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};
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this.changeListener = function(e) {
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var cursor = this.editor.selection.lead;
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if (cursor.row != this.base.row || cursor.column < this.base.column) {
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this.detach();
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}
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if (this.activated)
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this.changeTimer.schedule();
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else
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this.detach();
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};
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this.blurListener = function() {
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if (document.activeElement != this.editor.textInput.getElement())
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this.detach();
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};
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this.mousedownListener = function(e) {
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this.detach();
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};
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this.mousewheelListener = function(e) {
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this.detach();
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};
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this.goTo = function(where) {
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var row = this.popup.getRow();
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var max = this.popup.session.getLength() - 1;
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switch(where) {
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case "up": row = row < 0 ? max : row - 1; break;
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case "down": row = row >= max ? -1 : row + 1; break;
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case "start": row = 0; break;
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case "end": row = max; break;
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}
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this.popup.setRow(row);
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};
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this.insertMatch = function(data) {
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if (!data)
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data = this.popup.getData(this.popup.getRow());
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if (!data)
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return false;
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if (data.completer && data.completer.insertMatch) {
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data.completer.insertMatch(this.editor);
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} else {
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if (this.completions.filterText) {
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var ranges = this.editor.selection.getAllRanges();
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for (var i = 0, range; range = ranges[i]; i++) {
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range.start.column -= this.completions.filterText.length;
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this.editor.session.remove(range);
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}
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}
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if (data.snippet)
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snippetManager.insertSnippet(this.editor, data.snippet);
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else
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this.editor.execCommand("insertstring", data.value || data);
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}
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this.detach();
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};
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this.commands = {
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"Up": function(editor) { editor.completer.goTo("up"); },
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"Down": function(editor) { editor.completer.goTo("down"); },
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"Ctrl-Up|Ctrl-Home": function(editor) { editor.completer.goTo("start"); },
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"Ctrl-Down|Ctrl-End": function(editor) { editor.completer.goTo("end"); },
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"Esc": function(editor) { editor.completer.detach(); },
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"Space": function(editor) { editor.completer.detach(); editor.insert(" ");},
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"Return": function(editor) { editor.completer.insertMatch(); },
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"Shift-Return": function(editor) { editor.completer.insertMatch(true); },
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"Tab": function(editor) { editor.completer.insertMatch(); },
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"PageUp": function(editor) { editor.completer.popup.gotoPageUp(); },
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"PageDown": function(editor) { editor.completer.popup.gotoPageDown(); }
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};
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this.gatherCompletions = function(editor, callback) {
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var session = editor.getSession();
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var pos = editor.getCursorPosition();
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var line = session.getLine(pos.row);
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var prefix = util.retrievePrecedingIdentifier(line, pos.column);
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this.base = editor.getCursorPosition();
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this.base.column -= prefix.length;
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var matches = [];
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util.parForEach(editor.completers, function(completer, next) {
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completer.getCompletions(editor, session, pos, prefix, function(err, results) {
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if (!err)
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matches = matches.concat(results);
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next();
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});
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}, function() {
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callback(null, {
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prefix: prefix,
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matches: matches
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});
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});
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return true;
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};
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this.showPopup = function(editor) {
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if (this.editor)
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this.detach();
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this.activated = true;
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this.editor = editor;
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if (editor.completer != this) {
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if (editor.completer)
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editor.completer.detach();
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editor.completer = this;
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}
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editor.keyBinding.addKeyboardHandler(this.keyboardHandler);
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editor.on("changeSelection", this.changeListener);
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editor.on("blur", this.blurListener);
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editor.on("mousedown", this.mousedownListener);
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editor.on("mousewheel", this.mousewheelListener);
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this.updateCompletions();
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};
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this.updateCompletions = function(keepPopupPosition) {
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if (keepPopupPosition && this.base && this.completions) {
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var pos = this.editor.getCursorPosition();
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var prefix = this.editor.session.getTextRange({start: this.base, end: pos});
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if (prefix == this.completions.filterText)
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return;
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this.completions.setFilter(prefix);
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if (!this.completions.filtered.length)
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return this.detach();
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this.openPopup(this.editor, prefix, keepPopupPosition);
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return;
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}
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this.gatherCompletions(this.editor, function(err, results) {
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var matches = results && results.matches;
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if (!matches || !matches.length)
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return this.detach();
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// TODO reenable this when we have proper change tracking
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// if (matches.length == 1)
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// return this.insertMatch(matches[0]);
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this.completions = new FilteredList(matches);
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this.completions.setFilter(results.prefix);
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if (!this.completions.filtered.length)
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return this.detach();
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this.openPopup(this.editor, results.prefix, keepPopupPosition);
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}.bind(this));
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};
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this.cancelContextMenu = function() {
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var stop = function(e) {
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this.editor.off("nativecontextmenu", stop);
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if (e && e.domEvent)
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event.stopEvent(e.domEvent);
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}.bind(this);
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setTimeout(stop, 10);
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this.editor.on("nativecontextmenu", stop);
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};
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}).call(Autocomplete.prototype);
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Autocomplete.startCommand = {
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name: "startAutocomplete",
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exec: function(editor) {
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if (!editor.completer)
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editor.completer = new Autocomplete();
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editor.completer.showPopup(editor);
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// needed for firefox on mac
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editor.completer.cancelContextMenu();
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},
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bindKey: "Ctrl-Space|Ctrl-Shift-Space|Alt-Space"
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};
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var FilteredList = function(array, filterText, mutateData) {
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this.all = array;
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this.filtered = array;
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this.filterText = filterText || "";
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};
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(function(){
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this.setFilter = function(str) {
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if (str.length > this.filterText && str.lastIndexOf(this.filterText, 0) === 0)
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var matches = this.filtered;
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else
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var matches = this.all;
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this.filterText = str;
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matches = this.filterCompletions(matches, this.filterText);
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matches = matches.sort(function(a, b) {
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return b.exactMatch - a.exactMatch || b.score - a.score;
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});
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// make unique
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var prev = null;
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matches = matches.filter(function(item){
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var caption = item.value || item.caption || item.snippet;
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if (caption === prev) return false;
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prev = caption;
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return true;
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});
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this.filtered = matches;
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};
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this.filterCompletions = function(items, needle) {
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var results = [];
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var upper = needle.toUpperCase();
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var lower = needle.toLowerCase();
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loop: for (var i = 0, item; item = items[i]; i++) {
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var caption = item.value || item.caption || item.snippet;
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if (!caption) continue;
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var lastIndex = -1;
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var matchMask = 0;
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var penalty = 0;
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var index, distance;
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// caption char iteration is faster in Chrome but slower in Firefox, so lets use indexOf
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for (var j = 0; j < needle.length; j++) {
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// TODO add penalty on case mismatch
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var i1 = caption.indexOf(lower[j], lastIndex + 1);
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var i2 = caption.indexOf(upper[j], lastIndex + 1);
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index = (i1 >= 0) ? ((i2 < 0 || i1 < i2) ? i1 : i2) : i2;
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if (index < 0)
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continue loop;
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distance = index - lastIndex - 1;
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if (distance > 0) {
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// first char mismatch should be more sensitive
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if (lastIndex === -1)
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penalty += 10;
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penalty += distance;
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}
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matchMask = matchMask | (1 << index);
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lastIndex = index;
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}
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item.matchMask = matchMask;
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item.exactMatch = penalty ? 0 : 1;
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item.score = (item.score || 0) - penalty;
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results.push(item);
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}
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return results;
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};
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}).call(FilteredList.prototype);
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exports.Autocomplete = Autocomplete;
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exports.FilteredList = FilteredList;
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});
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