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+/**
+ * AccessibleBlockly
+ *
+ * Copyright 2016 Google Inc.
+ * https://developers.google.com/blockly/
+ *
+ * Licensed under the Apache License, Version 2.0 (the 'License');
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an 'AS IS' BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @fileoverview Angular2 Service that plays audio files.
+ * @author sll@google.com (Sean Lip)
+ */
+
+blocklyApp.AudioService = ng.core
+ .Class({
+ constructor: [function() {
+ // We do not play any audio unless a media path prefix is specified.
+ this.canPlayAudio = false;
+ if (ACCESSIBLE_GLOBALS.hasOwnProperty('mediaPathPrefix')) {
+ this.canPlayAudio = true;
+ var mediaPathPrefix = ACCESSIBLE_GLOBALS['mediaPathPrefix'];
+ this.AUDIO_PATHS_ = {
+ 'connect': mediaPathPrefix + 'click.mp3',
+ 'delete': mediaPathPrefix + 'delete.mp3'
+ };
+ }
+
+ // TODO(sll): Add ogg and mp3 fallbacks.
+ this.cachedAudioFiles_ = {};
+ }],
+ play_: function(audioId) {
+ if (this.canPlayAudio) {
+ if (!this.cachedAudioFiles_.hasOwnProperty(audioId)) {
+ this.cachedAudioFiles_[audioId] = new Audio(
+ this.AUDIO_PATHS_[audioId]);
+ }
+ this.cachedAudioFiles_[audioId].play();
+ }
+ },
+ playConnectSound: function() {
+ this.play_('connect');
+ },
+ playDeleteSound: function() {
+ this.play_('delete');
+ }
+ });