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Bug 1165134 - Add new MozChromeEvent/MozContentEvent to allow System app to control its own audio channels. r=baku

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This commit is contained in:
Evan Tseng 2015-06-12 18:35:13 +08:00
parent 1c846a6914
commit d043439ec2
1 changed files with 86 additions and 0 deletions
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86
b2g/chrome/content/shell.js
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@ -328,6 +328,18 @@ var shell = {
.sessionHistory = Cc["@mozilla.org/browser/shistory;1"]
.createInstance(Ci.nsISHistory);
this.allowedAudioChannels = new Map();
let audioChannels = systemAppFrame.allowedAudioChannels;
audioChannels && audioChannels.forEach(function(audioChannel) {
this.allowedAudioChannels.set(audioChannel.name, audioChannel);
audioChannel.addEventListener('activestatechanged', this);
// Set all audio channels as unmuted by default
// because some audio in System app will be played
// before AudioChannelService[1] is Gaia is loaded.
// [1]: https://github.com/mozilla-b2g/gaia/blob/master/apps/system/js/audio_channel_service.js
audioChannel.setMuted(false);
}.bind(this));
// On firefox mulet, shell.html is loaded in a tab
// and we have to listen on the chrome event handler
// to catch key events
@ -561,6 +573,18 @@ var shell = {
case 'unload':
this.stop();
break;
case 'activestatechanged':
var channel = evt.target;
// TODO: We should get the `isActive` state from evt.isActive.
// Then we don't need to do `channel.isActive()` here.
channel.isActive().onsuccess = function(evt) {
this.sendChromeEvent({
type: 'system-audiochannel-state-changed',
name: channel.name,
isActive: evt.target.result
});
}.bind(this);
break;
}
},
@ -739,6 +763,11 @@ var CustomEventManager = {
case 'inputregistry-remove':
KeyboardHelper.handleEvent(detail);
break;
case 'system-audiochannel-list':
case 'system-audiochannel-mute':
case 'system-audiochannel-volume':
SystemAppMozBrowserHelper.handleEvent(detail);
break;
case 'do-command':
DoCommandHelper.handleEvent(detail.cmd);
break;
@ -867,6 +896,63 @@ let KeyboardHelper = {
}
};
let SystemAppMozBrowserHelper = {
handleEvent: function systemAppMozBrowser_handleEvent(detail) {
let request;
let name;
switch (detail.type) {
case 'system-audiochannel-list':
let audioChannels = [];
shell.allowedAudioChannels.forEach(function(value, name) {
audioChannels.push(name);
});
SystemAppProxy._sendCustomEvent('mozSystemWindowChromeEvent', {
type: 'system-audiochannel-list',
audioChannels: audioChannels
});
break;
case 'system-audiochannel-mute':
name = detail.name;
let isMuted = detail.isMuted;
request = shell.allowedAudioChannels.get(name).setMuted(isMuted);
request.onsuccess = function() {
SystemAppProxy._sendCustomEvent('mozSystemWindowChromeEvent', {
type: 'system-audiochannel-mute-onsuccess',
name: name,
isMuted: isMuted
});
};
request.onerror = function() {
SystemAppProxy._sendCustomEvent('mozSystemWindowChromeEvent', {
type: 'system-audiochannel-mute-onerror',
name: name,
isMuted: isMuted
});
};
break;
case 'system-audiochannel-volume':
name = detail.name;
let volume = detail.volume;
request = shell.allowedAudioChannels.get(name).setVolume(volume);
request.onsuccess = function() {
sSystemAppProxy._sendCustomEvent('mozSystemWindowChromeEvent', {
type: 'system-audiochannel-volume-onsuccess',
name: name,
volume: volume
});
};
request.onerror = function() {
SystemAppProxy._sendCustomEvent('mozSystemWindowChromeEvent', {
type: 'system-audiochannel-volume-onerror',
name: name,
volume: volume
});
};
break;
}
}
};
// This is the backend for Gaia's screenshot feature. Gaia requests a
// screenshot by sending a mozContentEvent with detail.type set to
// 'take-screenshot'. Then we take a screenshot and send a