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-rw-r--r--ext/js/language/dictionary-importer-media-loader.js50
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diff --git a/ext/js/language/dictionary-importer-media-loader.js b/ext/js/language/dictionary-importer-media-loader.js
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-/*
- * Copyright (C) 2023 Yomitan Authors
- * Copyright (C) 2021-2022 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/>.
- */
-
-import {EventListenerCollection} from '../core.js';
-
-/**
- * Class used for loading and validating media during the dictionary import process.
- */
-export class DictionaryImporterMediaLoader {
- /** @type {import('dictionary-importer-media-loader').GetImageDetailsFunction} */
- getImageDetails(content, mediaType, transfer) {
- return new Promise((resolve, reject) => {
- const image = new Image();
- const eventListeners = new EventListenerCollection();
- const cleanup = () => {
- image.removeAttribute('src');
- URL.revokeObjectURL(url);
- eventListeners.removeAllEventListeners();
- };
- eventListeners.addEventListener(image, 'load', () => {
- const {naturalWidth: width, naturalHeight: height} = image;
- if (Array.isArray(transfer)) { transfer.push(content); }
- cleanup();
- resolve({content, width, height});
- }, false);
- eventListeners.addEventListener(image, 'error', () => {
- cleanup();
- reject(new Error('Image failed to load'));
- }, false);
- const blob = new Blob([content], {type: mediaType});
- const url = URL.createObjectURL(blob);
- image.src = url;
- });
- }
-}