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assets/webapps/camera.gaiamobile.org/js/lib/sounds.js

@@ -0,0 +1,75 @@
+define([
+    'require',
+    'exports',
+    'module'
+], function (require, exports, module) {
+    'use strict';
+    module.exports = Sounds;
+    function Sounds(list) {
+        this.items = {};
+        (list || []).forEach(this.add, this);
+    }
+    Sounds.prototype.add = function (data) {
+        var self = this;
+        var sound = {
+            name: data.name,
+            url: data.url,
+            setting: data.setting,
+            enabled: false
+        };
+        this.items[data.name] = sound;
+        this.isEnabled(sound, function (value) {
+            self.setEnabled(sound, value);
+            self.observeSetting(sound);
+        });
+    };
+    Sounds.prototype.isEnabled = function (sound, done) {
+        setTimeout(function () {
+            var mozSettings = navigator.mozSettings;
+            var key = sound.setting;
+            if (!mozSettings) {
+                return;
+            }
+            mozSettings.createLock().get(key).onsuccess = onSuccess;
+            function onSuccess(e) {
+                var result = e.target.result[key];
+                done(result);
+            }
+        });
+    };
+    Sounds.prototype.observeSetting = function (sound) {
+        var mozSettings = navigator.mozSettings;
+        var key = sound.setting;
+        var self = this;
+        if (mozSettings) {
+            mozSettings.addObserver(key, function (e) {
+                self.setEnabled(sound, e.settingValue);
+            });
+        }
+    };
+    Sounds.prototype.setEnabled = function (sound, value) {
+        sound.enabled = value;
+    };
+    Sounds.prototype.play = function (name) {
+        var sound = this.items[name];
+        if (!sound.audio) {
+            sound.audio = this.createAudio(sound.url);
+        }
+        this.playSound(sound);
+    };
+    Sounds.prototype.player = function (name) {
+        return function () {
+            this.play(name);
+        }.bind(this);
+    };
+    Sounds.prototype.playSound = function (sound) {
+        if (sound.enabled) {
+            sound.audio.cloneNode(true).play();
+        }
+    };
+    Sounds.prototype.createAudio = function (url) {
+        var audio = new Audio(url);
+        audio.mozAudioChannelType = 'notification';
+        return audio;
+    };
+});