gecko/dom/webidl/AudioChannelManager.webidl

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/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
interface AudioChannelManager : EventTarget {
/**
* Indicates whether the headphones are plugged in or not.
*/
readonly attribute boolean headphones;
/**
* Fired when the headphones are plugged or unplugged.
*
* When the headphones are unplugged, we may start playing audio through the
* system's speakers. Similarly, when headphones are plugged in, we may
* switch audio from speakers to headphones.
*
* If audio is currently playing in this window or in one of its children, we
* will fire this event before we switch the audio output from headphones to
* speakers (or vice versa). This allows you to, for example, pause your
* window's audio when the headphones are unplugged.
*/
attribute EventHandler onheadphoneschange;
/**
* Indicates which audio channel is used to adjust volume when pressing HW
* volume keys.
*/
attribute DOMString volumeControlChannel;
[Pure, Cached, Throws,
Pref="dom.mozBrowserFramesEnabled",
CheckAnyPermissions="system-app-only-audio-channels-in-app"]
readonly attribute sequence<BrowserElementAudioChannel> allowedAudioChannels;
};