yomichan/ext/js/accessibility/google-docs.js

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/*
* 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/>.
*/
(async () => {
// Reentrant check
if (self.googleDocsAccessibilitySetup) { return; }
self.googleDocsAccessibilitySetup = true;
const invokeApi = (action, params) => {
return new Promise((resolve, reject) => {
chrome.runtime.sendMessage({action, params}, (response) => {
void chrome.runtime.lastError;
if (typeof response !== 'object' || response === null) {
reject(new Error('Unexpected response'));
} else if (typeof response.error !== 'undefined') {
reject(new Error('Invalid response'));
} else {
resolve(response.result);
}
});
});
};
const optionsContext = {depth: 0, url: location.href};
let options;
try {
options = await invokeApi('optionsGet', {optionsContext});
} catch (e) {
return;
}
if (!options.accessibility.forceGoogleDocsHtmlRendering) { return; }
let parent = document.head;
if (parent === null) {
parent = document.documentElement;
if (parent === null) { return; }
}
const script = document.createElement('script');
script.textContent = 'window._docs_force_html_by_ext = true;';
parent.appendChild(script);
parent.removeChild(script);
})();