| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| /** |
| * Icon of the audio player. |
| * TODO(yoshiki): Consider providing an exact size icon, instead of relying |
| * on downsampling by ash. |
| * |
| * @type {string} |
| * @const |
| */ |
| var AUDIO_PLAYER_ICON = 'icons/audio-player-64.png'; |
| |
| var AUDIO_PLAYER_APP_URL = 'audio_player.html'; |
| |
| /** |
| * Configuration of the audio player panel. |
| * @type {Object} |
| */ |
| var audioPlayerCreateOptions = { |
| id: 'audio-player', |
| type: 'panel', |
| minHeight: 4 + 48 + 96, // 4px: border-top, 48px: track, 96px: controller |
| minWidth: 320, |
| height: 4 + 48 + 96, // collapsed |
| width: 320, |
| frame: { |
| color: '#fafafa' |
| } |
| }; |
| |
| /** |
| * @constructor |
| * @extends {BackgroundBase} |
| */ |
| function AudioPlayerBackground() { |
| BackgroundBase.call(this); |
| } |
| |
| AudioPlayerBackground.prototype.__proto__ = BackgroundBase.prototype; |
| |
| /** |
| * Called when an app is restarted. |
| */ |
| AudioPlayerBackground.prototype.onRestarted_ = function() { |
| audioPlayer.reopen(function() { |
| // If the audioPlayer is reopened, change its window's icon. Otherwise |
| // there is no reopened window so just skip the call of setIcon. |
| if (audioPlayer.rawAppWindow) |
| audioPlayer.setIcon(AUDIO_PLAYER_ICON); |
| }); |
| }; |
| |
| |
| /** |
| * Backgound object. This is necessary for AppWindowWrapper. |
| * @type {BackgroundBase} |
| */ |
| var background = new AudioPlayerBackground(); |
| |
| /** |
| * Wrapper of audio player window. |
| * @type {SingletonAppWindowWrapper} |
| */ |
| var audioPlayer = new SingletonAppWindowWrapper(AUDIO_PLAYER_APP_URL, |
| audioPlayerCreateOptions); |
| |
| /** |
| * Opens player window. |
| * @param {!Array<string>} urls List of audios to play and index to start |
| * playing. |
| * @return {!Promise} Promise to be fulfilled on success, or rejected on error. |
| */ |
| function open(urls) { |
| var position = 0; |
| var startUrl = (position < urls.length) ? urls[position] : ''; |
| |
| return new Promise(function(fulfill, reject) { |
| if (urls.length === 0) { |
| reject('No file to open.'); |
| return; |
| } |
| |
| // Gets the current list of the children of the parent. |
| window.webkitResolveLocalFileSystemURL(urls[0], function(fileEntry) { |
| fileEntry.getParent(function(parentEntry) { |
| var dirReader = parentEntry.createReader(); |
| var entries = []; |
| |
| // Call the reader.readEntries() until no more results are returned. |
| var readEntries = function() { |
| dirReader.readEntries(function(results) { |
| if (!results.length) { |
| fulfill(entries.sort(util.compareName)); |
| } else { |
| entries = entries.concat(Array.prototype.slice.call(results, 0)); |
| readEntries(); |
| } |
| }, reject); |
| }; |
| |
| // Start reading. |
| readEntries(); |
| }, reject); |
| }, reject); |
| }).then(function(entries) { |
| // Omits non-audio files. |
| var audioEntries = entries.filter(FileType.isAudio); |
| |
| // Adjusts the position to start playing. |
| var maybePosition = util.entriesToURLs(audioEntries).indexOf(startUrl); |
| if (maybePosition !== -1) |
| position = maybePosition; |
| |
| // Opens the audio player panel. |
| return new Promise(function(fulfill, reject) { |
| var urls = util.entriesToURLs(audioEntries); |
| audioPlayer.launch({items: urls, position: position}, |
| false, |
| fulfill.bind(null, null)); |
| }); |
| }).then(function() { |
| audioPlayer.setIcon(AUDIO_PLAYER_ICON); |
| audioPlayer.rawAppWindow.focus(); |
| return AUDIO_PLAYER_APP_URL; |
| }).catch(function(error) { |
| console.error('Launch failed' + error.stack || error); |
| return Promise.reject(error); |
| }); |
| } |
| |
| background.setLaunchHandler(open); |