1 files changed, 234 insertions, 0 deletions
diff --git a/ext/js/settings/audio-controller.js b/ext/js/settings/audio-controller.js
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+++ b/ext/js/settings/audio-controller.js
@@ -0,0 +1,234 @@
+/*
+ * 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;
+        }
+    }
+}