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phorge-phorge/webroot/rsrc/externals/javelin/lib/Sound.js

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/**
* @requires javelin-install
* @provides javelin-sound
* @javelin
*/
JX.install('Sound', {
statics: {
_sounds: {},
_queue: [],
_playingQueue: false,
load: function(uri) {
var self = JX.Sound;
if (!(uri in self._sounds)) {
var audio = JX.$N(
'audio',
{
src: uri,
preload: 'auto'
});
// In Safari, it isn't good enough to just load a sound in response
// to a click: we must also play it. Once we've played it once, we
// can continue to play it freely.
// Play the sound, then immediately pause it. This rejects the "play()"
// promise but marks the audio as playable, so our "play()" method will
// work correctly later.
if (window.webkitAudioContext) {
audio.play().then(JX.bag, JX.bag);
audio.pause();
}
self._sounds[uri] = audio;
}
},
play: function(uri, callback) {
var self = JX.Sound;
self.load(uri);
var sound = self._sounds[uri];
try {
sound.onended = callback || JX.bag;
sound.play().then(JX.bag, callback || JX.bag);
} catch (ex) {
JX.log(ex);
}
},
queue: function(uri) {
var self = JX.Sound;
self._queue.push(uri);
self._playQueue();
},
_playQueue: function() {
var self = JX.Sound;
if (self._playingQueue) {
return;
}
self._playingQueue = true;
self._nextQueue();
},
_nextQueue: function() {
var self = JX.Sound;
if (self._queue.length) {
var next = self._queue[0];
self._queue.splice(0, 1);
self.play(next, self._nextQueue);
} else {
self._playingQueue = false;
}
}
}
});