ui/file_manager/gallery/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  * Configuration of the Gallery window.
   7  * @const
   8  * @type {Object}
   9  */
  10 var windowCreateOptions = {
  11   id: 'gallery',
  12   innerBounds: {
  13     minWidth: 820,
  14     minHeight: 554
  15   },
  16   frame: 'none'
  17 };
  18
  19 /**
  20  * Backgound object. This is necessary for AppWindowWrapper.
  21  * @type {!BackgroundBase}
  22  */
  23 var background = new BackgroundBase();
  24
  25 /**
  26  * Wrapper of gallery window.
  27  * @type {SingletonAppWindowWrapper}
  28  */
  29 var gallery = new SingletonAppWindowWrapper('gallery.html',
  30     windowCreateOptions);
  31
  32 // Initializes the strings. This needs for the volume manager.
  33 var loadTimeDataPromise = new Promise(function(fulfill, reject) {
  34   chrome.fileManagerPrivate.getStrings(function(stringData) {
  35     loadTimeData.data = stringData;
  36     fulfill(true);
  37   });
  38 });
  39
  40 // Initializes the volume manager. This needs for isolated entries.
  41 var volumeManagerPromise = new Promise(function(fulfill, reject) {
  42   VolumeManager.getInstance(fulfill);
  43 });
  44
  45 /**
  46  * Queue to serialize initialization.
  47  * @type {!Promise}
  48  */
  49 window.initializePromise = Promise.all([loadTimeDataPromise,
  50                                      volumeManagerPromise]);
  51
  52 // Registers the handlers.
  53 chrome.app.runtime.onLaunched.addListener(onLaunched);
  54
  55 /**
  56  * Called when an app is launched.
  57  *
  58  * @param {!Object} launchData Launch data. See the manual of chrome.app.runtime
  59  *     .onLaunched for detail.
  60  */
  61 function onLaunched(launchData) {
  62   // Skip if files are not selected.
  63   if (!launchData || !launchData.items || launchData.items.length == 0)
  64     return;
  65
  66   window.initializePromise.then(function() {
  67     var isolatedEntries = launchData.items.map(function(item) {
  68       return item.entry;
  69     });
  70
  71     // Obtains entries in non-isolated file systems.
  72     // The entries in launchData are stored in the isolated file system.
  73     // We need to map the isolated entries to the normal entries to retrieve
  74     // their parent directory.
  75     chrome.fileManagerPrivate.resolveIsolatedEntries(
  76         isolatedEntries,
  77         function(externalEntries) {
  78           var urls = util.entriesToURLs(externalEntries);
  79           openGalleryWindow(urls, false);
  80         });
  81   });
  82 }
  83
  84 /**
  85  * Opens gallery window.
  86  * @param {!Array.<string>} urls List of URL to show.
  87  * @param {boolean} reopen True if reopen, false otherwise.
  88  * @return {!Promise} Promise to be fulfilled on success, or rejected on error.
  89  */
  90 function openGalleryWindow(urls, reopen) {
  91   return new Promise(function(fulfill, reject) {
  92     util.URLsToEntries(urls).then(function(result) {
  93       fulfill(util.entriesToURLs(result.entries));
  94     }).catch(reject);
  95   }).then(function(urls) {
  96     if (urls.length === 0)
  97       return Promise.reject('No file to open.');
  98
  99     // Opens a window.
 100     return new Promise(function(fulfill, reject) {
 101       gallery.launch(
 102           {urls: urls},
 103           reopen,
 104           fulfill.bind(null, gallery));
 105     }).then(function(gallery) {
 106       var galleryDocument = gallery.rawAppWindow.contentWindow.document;
 107       if (galleryDocument.readyState == 'complete')
 108         return gallery;
 109
 110       return new Promise(function(fulfill, reject) {
 111         galleryDocument.addEventListener(
 112             'DOMContentLoaded', fulfill.bind(null, gallery));
 113       });
 114     });
 115   }).then(function(gallery) {
 116     gallery.rawAppWindow.focus();
 117     return gallery.rawAppWindow.contentWindow.appID;
 118   }).catch(function(error) {
 119     console.error('Launch failed' + error.stack || error);
 120     return Promise.reject(error);
 121   });
 122 }