extensions/renderer/resources/keep_alive.js

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 define('keep_alive', [
   6     'content/public/renderer/service_provider',
   7     'extensions/common/mojo/keep_alive.mojom',
   8     'mojo/public/js/core',
   9 ], function(serviceProvider, mojom, core) {
  10
  11   /**
  12    * An object that keeps the background page alive until closed.
  13    * @constructor
  14    * @alias module:keep_alive~KeepAlive
  15    */
  16   function KeepAlive() {
  17     /**
  18      * The handle to the keep-alive object in the browser.
  19      * @type {!MojoHandle}
  20      * @private
  21      */
  22     this.handle_ = serviceProvider.connectToService(mojom.KeepAlive.name);
  23   }
  24
  25   /**
  26    * Removes this keep-alive.
  27    */
  28   KeepAlive.prototype.close = function() {
  29     core.close(this.handle_);
  30   };
  31
  32   var exports = {};
  33
  34   return {
  35     /**
  36      * Creates a keep-alive.
  37      * @return {!module:keep_alive~KeepAlive} A new keep-alive.
  38      */
  39     createKeepAlive: function() { return new KeepAlive(); }
  40   };
  41 });