| // 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. |
| |
| (function() { |
| 'use strict'; |
| |
| Polymer({ |
| is: 'track-info-panel', |
| |
| properties: { |
| track: { |
| type: Object, |
| value: null, |
| }, |
| |
| expanded: { |
| type: Boolean, |
| value: false, |
| notify: true, |
| reflectToAttribute: true, |
| observer: 'onExpandedChanged_', |
| }, |
| |
| artworkAvailable: { |
| type: Boolean, |
| value: false, |
| reflectToAttribute: true, |
| }, |
| |
| ariaExpandArtworkLabel: String, |
| }, |
| |
| /** @private */ |
| onExpandClick_: function() { |
| this.expanded = !this.expanded; |
| }, |
| |
| /** @private */ |
| onExpandedChanged_: function() { |
| this.$.expand.setAttribute('aria-expanded', Boolean(this.expanded)); |
| }, |
| }); |
| })(); // Anonymous closure |
