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vendor/yomitan/js/dom/native-simple-dom-parser.js

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+/*
+ * Copyright (C) 2023-2025  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/>.
+ */
+
+export class NativeSimpleDOMParser {
+    /**
+     * @param {string} content
+     */
+    constructor(content) {
+        /** @type {Document} */
+        this._document = new DOMParser().parseFromString(content, 'text/html');
+    }
+
+    /**
+     * @param {string} id
+     * @param {import('simple-dom-parser').Element} [root]
+     * @returns {?import('simple-dom-parser').Element}
+     */
+    getElementById(id, root) {
+        return this._convertElementOrDocument(root).querySelector(`[id='${id}']`);
+    }
+
+    /**
+     * @param {string} tagName
+     * @param {import('simple-dom-parser').Element} [root]
+     * @returns {?import('simple-dom-parser').Element}
+     */
+    getElementByTagName(tagName, root) {
+        return this._convertElementOrDocument(root).querySelector(tagName);
+    }
+
+    /**
+     * @param {string} tagName
+     * @param {import('simple-dom-parser').Element} [root]
+     * @returns {import('simple-dom-parser').Element[]}
+     */
+    getElementsByTagName(tagName, root) {
+        return [...this._convertElementOrDocument(root).querySelectorAll(tagName)];
+    }
+
+    /**
+     * @param {string} className
+     * @param {import('simple-dom-parser').Element} [root]
+     * @returns {import('simple-dom-parser').Element[]}
+     */
+    getElementsByClassName(className, root) {
+        return [...this._convertElementOrDocument(root).querySelectorAll(`.${className}`)];
+    }
+
+    /**
+     * @param {import('simple-dom-parser').Element} element
+     * @param {string} attribute
+     * @returns {?string}
+     */
+    getAttribute(element, attribute) {
+        const element2 = this._convertElement(element);
+        return element2.hasAttribute(attribute) ? element2.getAttribute(attribute) : null;
+    }
+
+    /**
+     * @param {import('simple-dom-parser').Element} element
+     * @returns {string}
+     */
+    getTextContent(element) {
+        const {textContent} = this._convertElement(element);
+        return typeof textContent === 'string' ? textContent : '';
+    }
+
+    /**
+     * @returns {boolean}
+     */
+    static isSupported() {
+        return typeof DOMParser !== 'undefined';
+    }
+
+    /**
+     * @param {import('simple-dom-parser').Element} element
+     * @returns {Element}
+     */
+    _convertElement(element) {
+        return /** @type {Element} */ (element);
+    }
+
+    /**
+     * @param {import('simple-dom-parser').Element|undefined} element
+     * @returns {Element|Document}
+     */
+    _convertElementOrDocument(element) {
+        return typeof element !== 'undefined' ? /** @type {Element} */ (element) : this._document;
+    }
+}