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