88 lines
3.3 KiB
JavaScript
88 lines
3.3 KiB
JavaScript
|
// Copyright 2007, Google Inc.
|
||
|
|
//
|
||
|
|
// Redistribution and use in source and binary forms, with or without
|
||
|
|
// modification, are permitted provided that the following conditions are met:
|
||
|
|
//
|
||
|
|
// 1. Redistributions of source code must retain the above copyright notice,
|
||
|
|
// this list of conditions and the following disclaimer.
|
||
|
|
// 2. Redistributions in binary form must reproduce the above copyright notice,
|
||
|
|
// this list of conditions and the following disclaimer in the documentation
|
||
|
|
// and/or other materials provided with the distribution.
|
||
|
|
// 3. Neither the name of Google Inc. nor the names of its contributors may be
|
||
|
|
// used to endorse or promote products derived from this software without
|
||
|
|
// specific prior written permission.
|
||
|
|
//
|
||
|
|
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
||
|
|
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||
|
|
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
|
||
|
|
// EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||
|
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
||
|
|
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
|
||
|
|
// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||
|
|
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
||
|
|
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
||
|
|
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
//
|
||
|
|
// 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');
|
||
|
|
// privateSetGlobalObject is only required and supported on IE Mobile on
|
||
|
|
// WinCE.
|
||
|
|
if (factory.getBuildInfo().indexOf('ie_mobile') != -1) {
|
||
|
|
factory.privateSetGlobalObject(this);
|
||
|
|
}
|
||
|
|
} catch (e) {
|
||
|
|
// Safari
|
||
|
|
if ((typeof navigator.mimeTypes != 'undefined')
|
||
|
|
&& 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.
|
||
|
|
//
|
||
|
|
// Note: In Internet Explorer for Windows Mobile, you can't add properties to
|
||
|
|
// the window object. However, global objects are automatically added as
|
||
|
|
// properties of the window object in all browsers.
|
||
|
|
if (!window.google) {
|
||
|
|
google = {};
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!google.gears) {
|
||
|
|
google.gears = {factory: factory};
|
||
|
|
}
|
||
|
|
})();
|