Separate the audio player app from Files.app

ui/file_manager/file_manager/audio_player/elements/volume_controller.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.
-
-(function() {
-  'use strict';
-
-  Polymer('volume-controller', {
-    /**
-     * Initializes an element. This method is called automatically when the
-     * element is ready.
-     */
-    ready: function() {
-      this.style.width = this.width + 'px';
-      this.style.height = this.height + 'px';
-
-      this.$.rawValueInput.style.width = this.height + 'px';
-      this.$.rawValueInput.style.height = this.width + 'px';
-      this.$.rawValueInput.style.webkitTransformOrigin =
-          (this.width / 2) + 'px ' +
-          (this.width / 2 - 2) + 'px';
-
-      var barLeft = (this.width / 2 - 1);
-      this.$.bar.style.left = barLeft + 'px';
-      this.$.bar.style.right = barLeft + 'px';
-
-      this.addEventListener('keydown', this.onKeyDown_.bind(this));
-    },
-
-    /**
-     * Registers handlers for changing of external variables
-     */
-    observe: {
-      'model.volume': 'onVolumeChanged',
-    },
-
-    /**
-     * Model object of the Audio Player.
-     * @type {AudioPlayerModel}
-     */
-    model: null,
-
-    /**
-     * Invoked when the model changed.
-     * @param {AudioPlayerModel} oldValue Old Value.
-     * @param {AudioPlayerModel} newValue New Value.
-     */
-    modelChanged: function(oldValue, newValue) {
-      this.onVolumeChanged((oldValue || {}).volume, (newValue || {}).volume);
-    },
-
-    /**
-     * Volume. 0 is silent, and 100 is maximum.
-     * @type {number}
-     */
-    value: 50,
-
-    /**
-     * Volume. 1000 is silent, and 0 is maximum.
-     * @type {number}
-     */
-    rawValue: 0,
-
-    /**
-     * Height of the element in pixels. Must be specified before ready() is
-     * called. Dynamic change is not supported.
-     * @type {number}
-     */
-    height: 100,
-
-    /**
-     * Width of the element in pixels. Must be specified before ready() is
-     * called. Dynamic change is not supported.
-     * @type {number}
-     */
-    width: 32,
-
-    /**
-     * Invoked when the 'volume' value in the model is changed.
-     * @param {number} oldValue Old value.
-     * @param {number} newValue New value.
-     */
-    onVolumeChanged: function(oldValue, newValue) {
-      if (oldValue != newValue)
-        this.rawValue = 100 - newValue;
-    },
-
-    /**
-     * Invoked when the 'rawValue' property is changed.
-     * @param {number} oldValue Old value.
-     * @param {number} newValue New value.
-     */
-    rawValueChanged: function(oldValue, newValue) {
-      if (oldValue != newValue)
-        this.model.volume = 100 - newValue;
-    },
-
-    /**
-     * Invoked when the 'keydown' event is fired.
-     * @param {Event} event The event object.
-     */
-    onKeyDown_: function(event) {
-      switch (event.keyIdentifier) {
-        // Prevents the default behavior. These key should be handled in
-        // <audio-player> element.
-        case 'Up':
-        case 'Down':
-        case 'PageUp':
-        case 'PageDown':
-          event.preventDefault();
-          break;
-      }
-    },
-  });
-})();  // Anonymous closure