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105 lines
3.5 KiB
JavaScript
105 lines
3.5 KiB
JavaScript
/* ***** 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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*
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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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var event = require("pilot/event");
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var RenderLoop = function(onRender) {
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this.onRender = onRender;
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this.pending = false;
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this.changes = 0;
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};
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(function() {
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this.schedule = function(change) {
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//this.onRender(change);
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//return;
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this.changes = this.changes | change;
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if (!this.pending) {
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this.pending = true;
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var _self = this;
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this.setTimeoutZero(function() {
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_self.pending = false;
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var changes = _self.changes;
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_self.changes = 0;
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_self.onRender(changes);
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})
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}
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};
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this.setTimeoutZero = window.requestAnimationFrame ||
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window.webkitRequestAnimationFrame ||
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window.mozRequestAnimationFrame ||
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window.oRequestAnimationFrame ||
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window.msRequestAnimationFrame;
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if (this.setTimeoutZero) {
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this.setTimeoutZero = this.setTimeoutZero.bind(window)
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} else if (window.postMessage) {
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this.messageName = "zero-timeout-message";
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this.setTimeoutZero = function(callback) {
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if (!this.attached) {
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var _self = this;
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event.addListener(window, "message", function(e) {
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if (_self.callback && e.data == _self.messageName) {
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event.stopPropagation(e);
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_self.callback();
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}
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});
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this.attached = true;
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}
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this.callback = callback;
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window.postMessage(this.messageName, "*");
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}
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} else {
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this.setTimeoutZero = function(callback) {
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setTimeout(callback, 0);
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}
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}
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}).call(RenderLoop.prototype);
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exports.RenderLoop = RenderLoop;
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});
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