gears.js
资源名称:ext-3.0.0.zip [点击查看]
上传用户:shuoshiled
上传日期:2018-01-28
资源大小:10124k
文件大小:2k
源码类别:
中间件编程
开发平台:
JavaScript
- /*! * Ext JS Library 3.0.0 * Copyright(c) 2006-2009 Ext JS, LLC * licensing@extjs.com * http://www.extjs.com/license */ // Copyright 2007 Google Inc. All Rights Reserved.
- //
- // Sets up google.gears.*, which is *the only* supported way to access Gears.
- //
- // Circumvent this file at your own risk!
- //
- // In the future, Gears may automatically define google.gears.* without this
- // file. Gears may use these objects to transparently fix bugs and compatibility
- // issues. Applications that use the code below will continue to work seamlessly
- // when that happens.
- (function() {
- // We are already defined. Hooray!
- if (window.google && google.gears) {
- return;
- }
- var factory = null;
- // Firefox
- if (typeof GearsFactory != 'undefined') {
- factory = new GearsFactory();
- } else {
- // IE
- try {
- factory = new ActiveXObject('Gears.Factory');
- } catch (e) {
- // Safari
- if (navigator.mimeTypes["application/x-googlegears"]) {
- factory = document.createElement("object");
- factory.style.display = "none";
- factory.width = 0;
- factory.height = 0;
- factory.type = "application/x-googlegears";
- document.documentElement.appendChild(factory);
- }
- }
- }
- // *Do not* define any objects if Gears is not installed. This mimics the
- // behavior of Gears defining the objects in the future.
- if (!factory) {
- return;
- }
- // Now set up the objects, being careful not to overwrite anything.
- if (!window.google) {
- window.google = {};
- }
- if (!google.gears) {
- google.gears = {factory: factory};
- }
- })();
- if (!window.google || !google.gears) {
- location.href = "http://gears.google.com/?action=install&message=Google%20Gears%20is%20required%20for%20this%20application" +
- "&return="+window.location.href;
- }