Quick View: show device model metadata.

ui/file_manager/file_manager/foreground/elements/files_metadata_box.js

 // Copyright 2016 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.
 
 var FilesMetadataBox = Polymer({
   is: 'files-metadata-box',
 
   properties: {
     // File media type, e.g. image, video.
     type: String,
@@ skipping 28 matching lines @@
       observer: 'metadataUpdated_',
     },
     mediaTitle: {
       type: String,
       observer: 'metadataUpdated_',
     },
     mediaTrack: {
       type: Number,
       observer: 'metadataUpdated_',
     },
+    /**
+     * Exif information parsed by exif_parser.js or null if there is no
+     * information.
+     * @type {?Object}
+     */
+    ifd: {
+      type: Object,
+      observer: 'metadataUpdated_',
+    },
 
     // Whether the size is the middle of loading.
     isSizeLoading: Boolean,
 
     /**
      * @private
      */
     hasFileSpecificInfo_: Boolean,
   },
 
   // Clears fields.
   clear: function() {
     this.type = '';
     this.size = '';
     this.modiifcationTime = '';
     this.mediaMimeType = '';
     this.filePath = '';
 
     this.imageWidth = 0;
     this.imageHeight = 0;
     this.mediaTitle = '';
     this.mediaArtist = '';
     this.mediaAlbum = '';
     this.mediaDuration = 0;
     this.mediaGenre = '';
     this.mediaTrack = 0;
+    this.ifd = null;
 
     this.isSizeLoading = false;
   },
 
   /**
    * @param {string} type
    * @return {boolean}
    *
    * @private
    */
@@ skipping 16 matching lines @@
   isAudio_: function(type) { return type === 'audio'; },
 
   /**
    * Update private properties computed from metadata.
    * @private
    */
   metadataUpdated_: function() {
     this.hasFileSpecificInfo_ =
         !!(this.imageWidth && this.imageHeight || this.mediaTitle ||
            this.mediaArtist || this.mediaAlbum || this.mediaDuration ||
-           this.mediaGenre || this.mediaTrack);
+           this.mediaGenre || this.mediaTrack ||
+           this.ifd);
   },
 
   /**
    * Converts the duration into human friendly string.
    * @param {number} time the duration in seconds.
    * @return {string} String representation of the given duration.
    **/
   time2string_: function(time) {
     if (!time)
       return '';
@@ skipping 14 matching lines @@
    * @return {string}
    *
    * @private
    */
   resolution_: function(imageWidth, imageHeight) {
     if (imageWidth && imageHeight)
       return imageWidth + " x " + imageHeight;
     return '';
   },
 
+  /**
+   * @param {?Object} ifd
+   * @return {string}
+   *
+   * @private
+   */
+  deviceModel_: function(ifd) {
+    var id = 272;
+    return (ifd && ifd.image && ifd.image[id] && ifd.image[id].value) || '';
+  },
+
 });