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+/*
+ * Copyright (C) 2019-2021 Yomichan Authors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+/* global
+ * AudioSystem
+ */
+
+class AudioController {
+ constructor(settingsController) {
+ this._settingsController = settingsController;
+ this._audioSystem = new AudioSystem();
+ this._audioSourceContainer = null;
+ this._audioSourceAddButton = null;
+ this._audioSourceEntries = [];
+ this._ttsVoiceTestTextInput = null;
+ }
+
+ async prepare() {
+ this._audioSystem.prepare();
+
+ this._ttsVoiceTestTextInput = document.querySelector('#text-to-speech-voice-test-text');
+ this._audioSourceContainer = document.querySelector('#audio-source-list');
+ this._audioSourceAddButton = document.querySelector('#audio-source-add');
+ this._audioSourceContainer.textContent = '';
+
+ this._audioSourceAddButton.addEventListener('click', this._onAddAudioSource.bind(this), false);
+
+ if (typeof speechSynthesis !== 'undefined') {
+ speechSynthesis.addEventListener('voiceschanged', this._updateTextToSpeechVoices.bind(this), false);
+ }
+ this._updateTextToSpeechVoices();
+
+ document.querySelector('#text-to-speech-voice-test').addEventListener('click', this._onTestTextToSpeech.bind(this), false);
+
+ this._settingsController.on('optionsChanged', this._onOptionsChanged.bind(this));
+
+ const options = await this._settingsController.getOptions();
+ this._onOptionsChanged({options});
+ }
+
+ // Private
+
+ _onOptionsChanged({options}) {
+ for (let i = this._audioSourceEntries.length - 1; i >= 0; --i) {
+ this._cleanupAudioSourceEntry(i);
+ }
+
+ for (const audioSource of options.audio.sources) {
+ this._createAudioSourceEntry(audioSource);
+ }
+ }
+
+ _onTestTextToSpeech() {
+ try {
+ const text = this._ttsVoiceTestTextInput.value || '';
+ const voiceUri = document.querySelector('[data-setting="audio.textToSpeechVoice"]').value;
+
+ const audio = this._audioSystem.createTextToSpeechAudio(text, voiceUri);
+ audio.volume = 1.0;
+ audio.play();
+ } catch (e) {
+ // NOP
+ }
+ }
+
+ _updateTextToSpeechVoices() {
+ const voices = (
+ typeof speechSynthesis !== 'undefined' ?
+ [...speechSynthesis.getVoices()].map((voice, index) => ({
+ voice,
+ isJapanese: this._languageTagIsJapanese(voice.lang),
+ index
+ })) :
+ []
+ );
+ voices.sort(this._textToSpeechVoiceCompare.bind(this));
+
+ for (const select of document.querySelectorAll('[data-setting="audio.textToSpeechVoice"]')) {
+ const fragment = document.createDocumentFragment();
+
+ let option = document.createElement('option');
+ option.value = '';
+ option.textContent = 'None';
+ fragment.appendChild(option);
+
+ for (const {voice} of voices) {
+ option = document.createElement('option');
+ option.value = voice.voiceURI;
+ option.textContent = `${voice.name} (${voice.lang})`;
+ fragment.appendChild(option);
+ }
+
+ select.textContent = '';
+ select.appendChild(fragment);
+ }
+ }
+
+ _textToSpeechVoiceCompare(a, b) {
+ if (a.isJapanese) {
+ if (!b.isJapanese) { return -1; }
+ } else {
+ if (b.isJapanese) { return 1; }
+ }
+
+ if (a.voice.default) {
+ if (!b.voice.default) { return -1; }
+ } else {
+ if (b.voice.default) { return 1; }
+ }
+
+ return a.index - b.index;
+ }
+
+ _languageTagIsJapanese(languageTag) {
+ return (
+ languageTag.startsWith('ja_') ||
+ languageTag.startsWith('ja-') ||
+ languageTag.startsWith('jpn-')
+ );
+ }
+
+ _getUnusedAudioSource() {
+ const audioSourcesAvailable = [
+ 'jpod101',
+ 'jpod101-alternate',
+ 'jisho',
+ 'custom'
+ ];
+ for (const source of audioSourcesAvailable) {
+ if (!this._audioSourceEntries.some((metadata) => metadata.value === source)) {
+ return source;
+ }
+ }
+ return audioSourcesAvailable[0];
+ }
+
+ _createAudioSourceEntry(value) {
+ const eventListeners = new EventListenerCollection();
+ const container = this._settingsController.instantiateTemplate('audio-source');
+ const select = container.querySelector('.audio-source-select');
+ const removeButton = container.querySelector('.audio-source-remove');
+ const menuButton = container.querySelector('.audio-source-menu-button');
+
+ select.value = value;
+
+ const entry = {
+ container,
+ eventListeners,
+ value
+ };
+
+ eventListeners.addEventListener(select, 'change', this._onAudioSourceSelectChange.bind(this, entry), false);
+ if (removeButton !== null) {
+ eventListeners.addEventListener(removeButton, 'click', this._onAudioSourceRemoveClicked.bind(this, entry), false);
+ }
+ if (menuButton !== null) {
+ eventListeners.addEventListener(menuButton, 'menuClose', this._onMenuClose.bind(this, entry), false);
+ }
+
+ this._audioSourceContainer.appendChild(container);
+ this._audioSourceEntries.push(entry);
+ }
+
+ async _removeAudioSourceEntry(entry) {
+ const index = this._audioSourceEntries.indexOf(entry);
+ if (index < 0) { return; }
+
+ this._cleanupAudioSourceEntry(index);
+ await this._settingsController.modifyProfileSettings([{
+ action: 'splice',
+ path: 'audio.sources',
+ start: index,
+ deleteCount: 1,
+ items: []
+ }]);
+ }
+
+ _cleanupAudioSourceEntry(index) {
+ const {container, eventListeners} = this._audioSourceEntries[index];
+ if (container.parentNode !== null) {
+ container.parentNode.removeChild(container);
+ }
+ eventListeners.removeAllEventListeners();
+ this._audioSourceEntries.splice(index, 1);
+ }
+
+ async _onAddAudioSource() {
+ const audioSource = this._getUnusedAudioSource();
+ const index = this._audioSourceEntries.length;
+ this._createAudioSourceEntry(audioSource);
+ await this._settingsController.modifyProfileSettings([{
+ action: 'splice',
+ path: 'audio.sources',
+ start: index,
+ deleteCount: 0,
+ items: [audioSource]
+ }]);
+ }
+
+ async _onAudioSourceSelectChange(entry, event) {
+ const index = this._audioSourceEntries.indexOf(entry);
+ if (index < 0) { return; }
+
+ const value = event.currentTarget.value;
+ entry.value = value;
+ await this._settingsController.setProfileSetting(`audio.sources[${index}]`, value);
+ }
+
+ _onAudioSourceRemoveClicked(entry) {
+ this._removeAudioSourceEntry(entry);
+ }
+
+ _onMenuClose(entry, e) {
+ switch (e.detail.action) {
+ case 'remove':
+ this._removeAudioSourceEntry(entry);
+ break;
+ }
+ }
+}