/**
* @license
* Copyright 2016 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
goog.provide('shaka.ui.AudioLanguageSelection');
goog.require('shaka.ui.Enums');
goog.require('shaka.ui.LanguageUtils');
goog.require('shaka.ui.Locales');
goog.require('shaka.ui.Localization');
goog.require('shaka.ui.OverflowMenu');
goog.require('shaka.ui.SettingsMenu');
/**
* @extends {shaka.ui.SettingsMenu}
* @final
* @export
*/
shaka.ui.AudioLanguageSelection = class extends shaka.ui.SettingsMenu {
/**
* @param {!HTMLElement} parent
* @param {!shaka.ui.Controls} controls
*/
constructor(parent, controls) {
super(parent, controls, shaka.ui.Enums.MaterialDesignIcons.LANGUAGE);
this.button.classList.add('shaka-language-button');
this.menu.classList.add('shaka-audio-languages');
this.eventManager.listen(
this.localization, shaka.ui.Localization.LOCALE_UPDATED, () => {
this.updateLocalizedStrings_();
});
this.eventManager.listen(
this.localization, shaka.ui.Localization.LOCALE_CHANGED, () => {
this.updateLocalizedStrings_();
});
this.eventManager.listen(this.player, 'trackschanged', () => {
this.onTracksChanged_();
});
this.eventManager.listen(this.player, 'variantchanged', () => {
this.updateAudioLanguages_();
});
// Set up all the strings in the user's preferred language.
this.updateLocalizedStrings_();
this.updateAudioLanguages_();
}
/** @private */
updateAudioLanguages_() {
const tracks = this.player.getVariantTracks();
shaka.ui.LanguageUtils.updateTracks(tracks, this.menu,
(track) => this.onAudioTrackSelected_(track),
/* updateChosen */ true, this.currentSelection, this.localization,
this.controls.getConfig().trackLabelFormat);
shaka.ui.Utils.focusOnTheChosenItem(this.menu);
this.controls.dispatchEvent(
new shaka.util.FakeEvent('languageselectionupdated'));
}
/** @private */
onTracksChanged_() {
const hasVariants = this.player.getVariantTracks().length > 0;
shaka.ui.Utils.setDisplay(this.button, hasVariants);
this.updateAudioLanguages_();
}
/**
* @param {!shaka.extern.Track} track
* @private
*/
onAudioTrackSelected_(track) {
this.player.selectAudioLanguage(track.language, track.roles[0]);
}
/**
* @private
*/
updateLocalizedStrings_() {
const LocIds = shaka.ui.Locales.Ids;
this.backButton.setAttribute(shaka.ui.Constants.ARIA_LABEL,
this.localization.resolve(LocIds.BACK));
this.button.setAttribute(shaka.ui.Constants.ARIA_LABEL,
this.localization.resolve(LocIds.LANGUAGE));
this.nameSpan.textContent =
this.localization.resolve(LocIds.LANGUAGE);
this.backSpan.textContent =
this.localization.resolve(LocIds.LANGUAGE);
}
};
/**
* @implements {shaka.extern.IUIElement.Factory}
* @final
*/
shaka.ui.AudioLanguageSelection.Factory = class {
/** @override */
create(rootElement, controls) {
return new shaka.ui.AudioLanguageSelection(rootElement, controls);
}
};
shaka.ui.OverflowMenu.registerElement(
'language', new shaka.ui.AudioLanguageSelection.Factory());