Gallery: Add items to GalleryDataModel before loading their metadata.

ui/file_manager/gallery/js/gallery_item.js

 // 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.
 
 /**
  * Object representing an image item (a photo).
  *
  * @param {!FileEntry} entry Image entry.
  * @param {!EntryLocation} locationInfo Entry location information.
- * @param {!MetadataItem} metadataItem
- * @param {!ThumbnailMetadataItem} thumbnailMetadataItem
+ * @param {MetadataItem} metadataItem
+ * @param {ThumbnailMetadataItem} thumbnailMetadataItem
  * @param {boolean} original Whether the entry is original or edited.
  * @constructor
  * @struct
  */
 Gallery.Item = function(
     entry, locationInfo, metadataItem, thumbnailMetadataItem, original) {
   /**
    * @private {!FileEntry}
    */
   this.entry_ = entry;
 
   /**
    * @private {!EntryLocation}
    */
   this.locationInfo_ = locationInfo;
 
   /**
-   * @private {!MetadataItem}
+   * @private {MetadataItem}
    */
   this.metadataItem_ = metadataItem;
 
   /**
-   * @private {!ThumbnailMetadataItem}
+   * @private {ThumbnailMetadataItem}
    */
   this.thumbnailMetadataItem_ = metadataItem;
 
   // TODO(yawano): Change this.contentImage and this.screenImage to private
   // fields and provide utility methods for them (e.g. revokeFullImageCache).
   /**
    * The content cache is used for prefetching the next image when going through
    * the images sequentially. The real life photos can be large (18Mpix = 72Mb
    * pixel array) so we want only the minimum amount of caching.
    * @type {(HTMLCanvasElement|HTMLImageElement)}
@@ skipping 29 matching lines @@
 Gallery.Item.prototype.getEntry = function() { return this.entry_; };
 
 /**
  * @return {!EntryLocation} Entry location information.
  */
 Gallery.Item.prototype.getLocationInfo = function() {
   return this.locationInfo_;
 };
 
 /**
- * @return {!MetadataItem} Metadata.
+ * @return {MetadataItem} Metadata.
  */
 Gallery.Item.prototype.getMetadataItem = function() {
   return this.metadataItem_;
 };
 
 /**
- * @return {!ThumbnailMetadataItem} Thumbnail metadata item.
+ * @param {!MetadataItem} metadata
+ */
+Gallery.Item.prototype.setMetadataItem = function(metadata) {
+  this.metadataItem_ = metadata;
+};
+
+/**
+ * @return {ThumbnailMetadataItem} Thumbnail metadata item.
  */
 Gallery.Item.prototype.getThumbnailMetadataItem = function() {
   return this.thumbnailMetadataItem_;
 };
 
 /**
+ * @param {!ThumbnailMetadataItem} item Thumbnail metadata item.
+ */
+Gallery.Item.prototype.setThumbnailMetadataItem = function(item) {
+  this.thumbnailMetadataItem_ = item;
+};
+
+/**
  * @return {string} File name.
  */
 Gallery.Item.prototype.getFileName = function() {
   return this.entry_.name;
 };
 
 /**
  * @return {boolean} True if this image has not been created in this session.
  */
 Gallery.Item.prototype.isOriginal = function() { return this.original_; };
@@ skipping 258 matching lines @@
         return Promise.reject(str('GALLERY_FILE_EXISTS'));
       }, function() {
         return new Promise(
             this.entry_.moveTo.bind(this.entry_, parentDirectory, newFileName));
       }.bind(this));
     }.bind(this));
   }.bind(this)).then(function(entry) {
     this.entry_ = entry;
   }.bind(this));
 };