/*! @license
* Shaka Player
* Copyright 2016 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
goog.provide('shaka.ui.RewindButton');
goog.require('shaka.ui.Controls');
goog.require('shaka.ui.Element');
goog.require('shaka.ui.Enums');
goog.require('shaka.ui.Locales');
goog.require('shaka.ui.Localization');
goog.require('shaka.util.Dom');
/**
* @extends {shaka.ui.Element}
* @final
* @export
*/
shaka.ui.RewindButton = class extends shaka.ui.Element {
/**
* @param {!HTMLElement} parent
* @param {!shaka.ui.Controls} controls
*/
constructor(parent, controls) {
super(parent, controls);
/** @private {!HTMLButtonElement} */
this.button_ = shaka.util.Dom.createButton();
this.button_.classList.add('material-icons-round');
this.button_.classList.add('shaka-rewind-button');
this.button_.classList.add('shaka-tooltip-status');
this.button_.setAttribute('shaka-status',
this.localization.resolve(shaka.ui.Locales.Ids.OFF));
this.button_.textContent =
shaka.ui.Enums.MaterialDesignIcons.REWIND;
this.parent.appendChild(this.button_);
this.updateAriaLabel_();
/** @private {!Array.<number>} */
this.rewindRates_ = this.controls.getConfig().rewindRates;
this.eventManager.listen(
this.localization, shaka.ui.Localization.LOCALE_UPDATED, () => {
this.updateAriaLabel_();
});
this.eventManager.listen(
this.localization, shaka.ui.Localization.LOCALE_CHANGED, () => {
this.updateAriaLabel_();
});
this.eventManager.listen(this.button_, 'click', () => {
this.rewind_();
});
}
/**
* @private
*/
updateAriaLabel_() {
this.button_.ariaLabel =
this.localization.resolve(shaka.ui.Locales.Ids.REWIND);
}
/**
* Cycles trick play rate between the selected rewind rates.
* @private
*/
rewind_() {
if (!this.video.duration) {
return;
}
const trickPlayRate = this.player.getPlaybackRate();
const newRateIndex = this.rewindRates_.indexOf(trickPlayRate) + 1;
// When the button is clicked, the next rate in this.rewindRates_ is
// selected. If no more rates are available, the first one is set.
const newRate = (newRateIndex != this.rewindRates_.length) ?
this.rewindRates_[newRateIndex] : this.rewindRates_[0];
this.player.trickPlay(newRate);
this.button_.setAttribute('shaka-status', newRate + 'x');
}
};
/**
* @implements {shaka.extern.IUIElement.Factory}
* @final
*/
shaka.ui.RewindButton.Factory = class {
/** @override */
create(rootElement, controls) {
return new shaka.ui.RewindButton(rootElement, controls);
}
};
shaka.ui.Controls.registerElement(
'rewind', new shaka.ui.RewindButton.Factory());