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// 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.
/**
* Repeat Button.
*
* This is for repeat button in Control Panel for Audio Player.
*/
Polymer({
is: 'repeat-button',
hostAttributes: {
role: 'button',
tabindex: 0
},
behaviors: [
Polymer.IronButtonState,
Polymer.IronControlState
],
properties: {
'repeatMode': {
type: String,
notify: true,
reflectToAttribute: true
}
},
listeners: {
tap: '_tapHandler'
},
observers: [
'_focusedChanged(receivedFocusFromKeyboard)'
],
_focusedChanged: function(receivedFocusFromKeyboard) {
if (receivedFocusFromKeyboard) {
this.classList.add('keyboard-focus');
} else {
this.classList.remove('keyboard-focus');
}
},
/**
* Initialize member variables.
*/
created: function() {
/**
* @private {Array<string>}
*/
this.modeName_ = [
"no-repeat",
"repeat-all",
"repeat-one"
];
},
_tapHandler: function() {
this.next_();
},
/**
* Change the mode into next one.
* @private
*/
next_: function() {
this.index_ = this.index_ || this.modeName_.indexOf(this.repeatMode);
if(this.index_ === -1)
return;
var nextIndex = (this.index_ + 1) % this.modeName_.length;
this.repeatMode = this.modeName_[nextIndex];
this.index_ = nextIndex;
},
/**
* Whether or not the button is active, which means it should be toggled.
* @param {string} mode Current mode name
* @return {boolean} True if the mode is repeat.
*/
isActive: function(mode) {
return mode === "repeat-all" || mode === "repeat-one";
},
});
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