ui/file_manager/video_player/js/background.js

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 /**
   6  * Icon of the video player.
   7  * TODO(yoshiki): Consider providing an exact size icon, instead of relying
   8  * on downsampling by ash.
   9  *
  10  * @type {string}
  11  * @const
  12  */
  13 var ICON_IMAGE = 'images/icon/video-player-64.png';
  14
  15 /**
  16  * Configuration of the video player panel.
  17  * @type {Object}
  18  */
  19 var windowCreateOptions = {
  20   frame: 'none',
  21   minWidth: 480,
  22   minHeight: 270
  23 };
  24
  25 /**
  26  * Backgound object. This is necessary for AppWindowWrapper.
  27  * @type {BackgroundBase}
  28  */
  29 var background = new BackgroundBase();
  30
  31
  32 var generateWindowId = (function() {
  33   var seq = 0;
  34   return function() {
  35     return 'VIDEO_PLAYER_APP_' + seq++;
  36   }.wrap();
  37 }.wrap())();
  38
  39 /**
  40  * Opens player window.
  41  * @param {!Array<string>} urls List of videos to play and index to start
  42  *     playing.
  43  * @return {!Promise} Promise to be fulfilled on success, or rejected on error.
  44  */
  45 function openVideoPlayerWindow(urls) {
  46   var position = 0;
  47   var startUrl = (position < urls.length) ? urls[position] : '';
  48   var windowId = null;
  49
  50   return new Promise(function(fulfill, reject) {
  51     util.URLsToEntries(urls).then(function(result) {
  52       fulfill(result.entries);
  53     }.wrap()).catch(reject);
  54   }.wrap()).then(function(entries) {
  55     if (entries.length === 0)
  56       return Promise.reject('No file to open.');
  57
  58     // Adjusts the position to start playing.
  59     var maybePosition = util.entriesToURLs(entries).indexOf(startUrl);
  60     if (maybePosition !== -1)
  61       position = maybePosition;
  62
  63     windowId = generateWindowId();
  64
  65     // Opens the video player window.
  66     return new Promise(function(fulfill, reject) {
  67       var urls = util.entriesToURLs(entries);
  68       var videoPlayer = new AppWindowWrapper('video_player.html',
  69           windowId,
  70           windowCreateOptions);
  71
  72       videoPlayer.launch(
  73           {items: urls, position: position},
  74           false,
  75           fulfill.bind(null, videoPlayer));
  76     }.wrap());
  77   }.wrap()).then(function(videoPlayer) {
  78     var appWindow = videoPlayer.rawAppWindow;
  79
  80     if (chrome.test)
  81       appWindow.contentWindow.loadMockCastExtensionForTest = true;
  82
  83     videoPlayer.setIcon(ICON_IMAGE);
  84     appWindow.focus();
  85
  86     return windowId;
  87   }.wrap()).catch(function(error) {
  88     console.error('Launch failed' + error.stack || error);
  89     return Promise.reject(error);
  90   }.wrap());
  91 }
  92
  93 background.setLaunchHandler(openVideoPlayerWindow);