/*! @license
* Shaka Player
* Copyright 2016 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
goog.provide('shaka.ui.PlayButton');
goog.require('shaka.ads.Utils');
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');
goog.requireType('shaka.ui.Controls');
/**
* @extends {shaka.ui.Element}
* @implements {shaka.extern.IUIPlayButton}
* @export
*/
shaka.ui.PlayButton = class extends shaka.ui.Element {
/**
* @param {!HTMLElement} parent
* @param {!shaka.ui.Controls} controls
*/
constructor(parent, controls) {
super(parent, controls);
/** @protected {!HTMLButtonElement} */
this.button = shaka.util.Dom.createButton();
this.parent.appendChild(this.button);
const LOCALE_UPDATED = shaka.ui.Localization.LOCALE_UPDATED;
this.eventManager.listen(this.localization, LOCALE_UPDATED, () => {
this.updateAriaLabel();
});
const LOCALE_CHANGED = shaka.ui.Localization.LOCALE_CHANGED;
this.eventManager.listen(this.localization, LOCALE_CHANGED, () => {
this.updateAriaLabel();
});
this.eventManager.listen(this.video, 'play', () => {
this.updateAriaLabel();
this.updateIcon();
});
this.eventManager.listen(this.video, 'pause', () => {
this.updateAriaLabel();
this.updateIcon();
});
this.eventManager.listen(this.video, 'seeking', () => {
this.updateAriaLabel();
this.updateIcon();
});
this.eventManager.listen(this.adManager, shaka.ads.Utils.AD_PAUSED, () => {
this.updateAriaLabel();
this.updateIcon();
});
this.eventManager.listen(this.adManager, shaka.ads.Utils.AD_RESUMED, () => {
this.updateAriaLabel();
this.updateIcon();
});
this.eventManager.listen(this.adManager, shaka.ads.Utils.AD_STARTED, () => {
this.updateAriaLabel();
this.updateIcon();
});
this.eventManager.listen(this.adManager, shaka.ads.Utils.AD_STOPPED, () => {
this.updateAriaLabel();
this.updateIcon();
});
this.eventManager.listen(this.button, 'click', () => {
if (!this.controls.isOpaque()) {
return;
}
this.controls.playPausePresentation();
});
this.updateAriaLabel();
this.updateIcon();
}
/**
* @return {boolean}
* @protected
* @override
*/
isPaused() {
if (this.ad && this.ad.isLinear()) {
return this.ad.isPaused();
}
return this.controls.presentationIsPaused();
}
/**
* @return {boolean}
* @protected
* @override
*/
isEnded() {
if (this.ad && this.ad.isLinear()) {
return false;
}
return this.player ? this.player.isEnded() : true;
}
/**
* Called when the button's aria label needs to change.
* To be overridden by subclasses, if necessary
*/
updateAriaLabel() {
const LocIds = shaka.ui.Locales.Ids;
if (this.isEnded()) {
this.button.ariaLabel = this.localization.resolve(LocIds.REPLAY);
} else {
const label = this.isPaused() ? LocIds.PLAY : LocIds.PAUSE;
this.button.ariaLabel = this.localization.resolve(label);
}
}
/**
* Called when the button's icon needs to change.
* To be overridden by subclasses.
*/
updateIcon() {
const Icons = shaka.ui.Enums.MaterialDesignIcons;
if (this.isEnded()) {
this.button.textContent = Icons.REPLAY;
} else {
this.button.textContent = this.isPaused() ? Icons.PLAY : Icons.PAUSE;
}
}
};