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Diffstat (limited to 'ext/js/script/dynamic-loader.js')
| -rw-r--r-- | ext/js/script/dynamic-loader.js | 208 |
1 files changed, 0 insertions, 208 deletions
diff --git a/ext/js/script/dynamic-loader.js b/ext/js/script/dynamic-loader.js deleted file mode 100644 index 8fdb77e9..00000000 --- a/ext/js/script/dynamic-loader.js +++ /dev/null @@ -1,208 +0,0 @@ -/* - * Copyright (C) 2023 Yomitan Authors - * Copyright (C) 2020-2022 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 {yomitan} from '../yomitan.js'; - -export const dynamicLoader = (() => { - /** @type {Map<string, ?HTMLStyleElement|HTMLLinkElement>} */ - const injectedStylesheets = new Map(); - /** @type {WeakMap<Node, Map<string, ?HTMLStyleElement|HTMLLinkElement>>} */ - const injectedStylesheetsWithParent = new WeakMap(); - - /** - * @param {string} id - * @param {?Node} parentNode - * @returns {?HTMLStyleElement|HTMLLinkElement|undefined} - */ - function getInjectedStylesheet(id, parentNode) { - if (parentNode === null) { - return injectedStylesheets.get(id); - } - const map = injectedStylesheetsWithParent.get(parentNode); - return typeof map !== 'undefined' ? map.get(id) : void 0; - } - - /** - * @param {string} id - * @param {?Node} parentNode - * @param {?HTMLStyleElement|HTMLLinkElement} value - */ - function setInjectedStylesheet(id, parentNode, value) { - if (parentNode === null) { - injectedStylesheets.set(id, value); - return; - } - let map = injectedStylesheetsWithParent.get(parentNode); - if (typeof map === 'undefined') { - map = new Map(); - injectedStylesheetsWithParent.set(parentNode, map); - } - map.set(id, value); - } - - /** - * @param {string} id - * @param {'code'|'file'|'file-content'} type - * @param {string} value - * @param {boolean} [useWebExtensionApi] - * @param {?Node} [parentNode] - * @returns {Promise<?HTMLStyleElement|HTMLLinkElement>} - * @throws {Error} - */ - async function loadStyle(id, type, value, useWebExtensionApi = false, parentNode = null) { - if (useWebExtensionApi && yomitan.isExtensionUrl(window.location.href)) { - // Permissions error will occur if trying to use the WebExtension API to inject into an extension page - useWebExtensionApi = false; - } - - let styleNode = getInjectedStylesheet(id, parentNode); - if (typeof styleNode !== 'undefined') { - if (styleNode === null) { - // Previously injected via WebExtension API - throw new Error(`Stylesheet with id ${id} has already been injected using the WebExtension API`); - } - } else { - styleNode = null; - } - - if (type === 'file-content') { - value = await yomitan.api.getStylesheetContent(value); - type = 'code'; - useWebExtensionApi = false; - } - - if (useWebExtensionApi) { - // Inject via WebExtension API - if (styleNode !== null && styleNode.parentNode !== null) { - styleNode.parentNode.removeChild(styleNode); - } - - setInjectedStylesheet(id, parentNode, null); - await yomitan.api.injectStylesheet(type, value); - return null; - } - - // Create node in document - let parentNode2 = parentNode; - if (parentNode2 === null) { - parentNode2 = document.head; - if (parentNode2 === null) { - throw new Error('No parent node'); - } - } - - // Create or reuse node - const isFile = (type === 'file'); - const tagName = isFile ? 'link' : 'style'; - if (styleNode === null || styleNode.nodeName.toLowerCase() !== tagName) { - if (styleNode !== null && styleNode.parentNode !== null) { - styleNode.parentNode.removeChild(styleNode); - } - styleNode = document.createElement(tagName); - } - - // Update node style - if (isFile) { - /** @type {HTMLLinkElement} */ (styleNode).rel = 'stylesheet'; - /** @type {HTMLLinkElement} */ (styleNode).href = value; - } else { - styleNode.textContent = value; - } - - // Update parent - if (styleNode.parentNode !== parentNode2) { - parentNode2.appendChild(styleNode); - } - - // Add to map - setInjectedStylesheet(id, parentNode, styleNode); - return styleNode; - } - - /** - * @param {string[]} urls - * @returns {Promise<void>} - */ - function loadScripts(urls) { - return new Promise((resolve, reject) => { - const parent = document.body; - if (parent === null) { - reject(new Error('Missing body')); - return; - } - - for (const url of urls) { - const node = parent.querySelector(`script[src='${escapeCSSAttribute(url)}']`); - if (node !== null) { continue; } - - const script = document.createElement('script'); - script.type = 'module'; - script.async = false; - script.src = url; - parent.appendChild(script); - } - - loadScriptSentinel(parent, resolve, reject); - }); - } - - /** - * @param {HTMLElement} parent - * @param {() => void} resolve - * @param {(reason?: unknown) => void} reject - */ - function loadScriptSentinel(parent, resolve, reject) { - const script = document.createElement('script'); - - const sentinelEventName = 'dynamicLoaderSentinel'; - /** - * @param {import('dynamic-loader').DynamicLoaderSentinelDetails} e - */ - const sentinelEventCallback = (e) => { - if (e.scriptUrl !== script.src) { return; } - yomitan.off(sentinelEventName, sentinelEventCallback); - parent.removeChild(script); - resolve(); - }; - yomitan.on(sentinelEventName, sentinelEventCallback); - - try { - script.type = 'module'; - script.async = false; - script.src = '/js/script/dynamic-loader-sentinel.js'; - parent.appendChild(script); - } catch (e) { - yomitan.off(sentinelEventName, sentinelEventCallback); - reject(e); - } - } - - /** - * @param {string} value - * @returns {string} - */ - function escapeCSSAttribute(value) { - return value.replace(/['\\]/g, (character) => `\\${character}`); - } - - - return { - loadStyle, - loadScripts - }; -})(); |