chrome/browser/resources/hotword/always_on_manager.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 cr.define('hotword', function() {
   6   'use strict';
   7
   8   /**
   9    * Class used to manage always-on hotwording. Automatically starts hotwording
  10    * on startup, if always-on is enabled, and starts/stops hotwording at
  11    * appropriate times.
  12    * @param {!hotword.StateManager} stateManager
  13    * @constructor
  14    * @extends {hotword.BaseSessionManager}
  15    */
  16   function AlwaysOnManager(stateManager) {
  17     hotword.BaseSessionManager.call(this,
  18                                     stateManager,
  19                                     hotword.constants.SessionSource.ALWAYS);
  20   }
  21
  22   AlwaysOnManager.prototype = {
  23     __proto__: hotword.BaseSessionManager.prototype,
  24
  25     /** @override */
  26      enabled: function() {
  27        return this.stateManager.isAlwaysOnEnabled();
  28      },
  29
  30     /** @override */
  31     updateListeners: function() {
  32       hotword.BaseSessionManager.prototype.updateListeners.call(this);
  33       if (this.enabled())
  34         this.startSession();
  35     }
  36   };
  37
  38   return {
  39     AlwaysOnManager: AlwaysOnManager
  40   };
  41 });