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Pop-up dictionary browser extension for language learning. Successor to Yomichan. (PERSONAL FORK)
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2.1 kB · 60 lines
JavaScript
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061/* * Copyright (C) 2024-2025 Yomitan 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/>. */
import {ExtensionError} from '../core/extension-error.js';import {log} from '../core/log.js';import {DictionaryDatabase} from './dictionary-database.js';
export class DictionaryDatabaseWorkerHandler { constructor() { /** @type {DictionaryDatabase?} */ this._dictionaryDatabase = null; }
/** * */ async prepare() { this._dictionaryDatabase = new DictionaryDatabase(); try { await this._dictionaryDatabase.prepare(); } catch (e) { log.error(e); } self.addEventListener('message', this._onMessage.bind(this), false); self.addEventListener('messageerror', (event) => { const error = new ExtensionError('DictionaryDatabaseWorkerHandler: Error receiving message from main thread'); error.data = event; log.error(error); }); } // Private
/** * @param {MessageEvent<import('dictionary-database-worker-handler').MessageToWorker>} event */ _onMessage(event) { const {action} = event.data; switch (action) { case 'connectToDatabaseWorker': void this._dictionaryDatabase?.connectToDatabaseWorker(event.ports[0]); break; default: log.error(`Unknown action: ${action}`); } }}