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106 lines
3.4 KiB
JavaScript
106 lines
3.4 KiB
JavaScript
/* vim:ts=4:sts=4:sw=4:
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Ajax.org Code Editor (ACE).
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*
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* The Initial Developer of the Original Code is
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* Ajax.org B.V.
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Fabian Jakobs <fabian AT ajax DOT org>
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* Irakli Gozalishvili <rfobic@gmail.com> (http://jeditoolkit.com)
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* Julian Viereck <julian.viereck@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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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 oop = require("./oop");
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var event = require("./event");
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var EventEmitter = require("./event_emitter").EventEmitter;
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/**
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* This class keeps track of the focus state of the given window.
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* Focus changes for example when the user switches a browser tab,
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* goes to the location bar or switches to another application.
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*/
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var BrowserFocus = function(win) {
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win = win || window;
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this.lastFocus = new Date().getTime();
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this._isFocused = true;
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var _self = this;
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// IE < 9 supports focusin and focusout events
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if ("onfocusin" in win.document) {
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event.addListener(win.document, "focusin", function(e) {
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_self._setFocused(true);
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});
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event.addListener(win.document, "focusout", function(e) {
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_self._setFocused(!!e.toElement);
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});
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}
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else {
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event.addListener(win, "blur", function(e) {
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_self._setFocused(false);
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});
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event.addListener(win, "focus", function(e) {
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_self._setFocused(true);
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});
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}
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};
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(function(){
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oop.implement(this, EventEmitter);
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this.isFocused = function() {
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return this._isFocused;
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};
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this._setFocused = function(isFocused) {
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if (this._isFocused == isFocused)
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return;
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if (isFocused)
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this.lastFocus = new Date().getTime();
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this._isFocused = isFocused;
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this._emit("changeFocus");
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};
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}).call(BrowserFocus.prototype);
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exports.BrowserFocus = BrowserFocus;
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});
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