toolkit/actors/AudioPlaybackParent.jsm

   1 /* vim: set ts=2 sw=2 sts=2 et tw=80: */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5 "use strict";
   6
   7 var EXPORTED_SYMBOLS = ["AudioPlaybackParent"];
   8
   9 class AudioPlaybackParent extends JSWindowActorParent {
  10   constructor() {
  11     super();
  12     this._hasAudioPlayback = false;
  13     this._hasBlockMedia = false;
  14   }
  15   receiveMessage(aMessage) {
  16     const browser = this.browsingContext.top.embedderElement;
  17     switch (aMessage.name) {
  18       case "AudioPlayback:Start":
  19         this._hasAudioPlayback = true;
  20         browser.audioPlaybackStarted();
  21         break;
  22       case "AudioPlayback:Stop":
  23         this._hasAudioPlayback = false;
  24         browser.audioPlaybackStopped();
  25         break;
  26       case "AudioPlayback:ActiveMediaBlockStart":
  27         this._hasBlockMedia = true;
  28         browser.activeMediaBlockStarted();
  29         break;
  30       case "AudioPlayback:ActiveMediaBlockStop":
  31         this._hasBlockMedia = false;
  32         browser.activeMediaBlockStopped();
  33         break;
  34     }
  35   }
  36   didDestroy() {
  37     const browser = this.browsingContext.top.embedderElement;
  38     if (browser && this._hasAudioPlayback) {
  39       browser.audioPlaybackStopped();
  40     }
  41     if (browser && this._hasBlockMedia) {
  42       browser.activeMediaBlockStopped();
  43     }
  44   }
  45 }