Quick View: Show year recorded 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 25 matching lines @@
     },
     mediaGenre: {
       type: String,
       observer: 'metadataUpdated_',
     },
     mediaTitle: {
       type: String,
       observer: 'metadataUpdated_',
     },
     mediaTrack: {
-      type: Number,
+      type: String,
+      observer: 'metadataUpdated_',
+    },
+    mediaYearRecorded: {
+      type: String,
       observer: 'metadataUpdated_',
     },
     /**
      * Exif information parsed by exif_parser.js or null if there is no
      * information.
      * @type {?Object}
      */
     ifd: {
       type: Object,
       observer: 'metadataUpdated_',
@@ skipping 16 matching lines @@
     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.mediaTrack = '';
+    this.mediaYearRecorded = '';
     this.ifd = null;
 
     this.isSizeLoading = false;
   },
 
   /**
    * @param {string} type
    * @return {boolean}
    *
    * @private
@@ skipping 17 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.mediaYearRecorded ||
            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)
@@ skipping 103 matching lines @@
 
     var result = '';
     for (var i = 0; i < values.length; i++) {
       if (values[i]) {
         result += (result ? ' ' : '') + values[i];
       }
     }
     return result;
   },
 });