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- /*************************************************************
- *
- * Copyright (c) 2017-2022 The MathJax Consortium
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- /**
- * @fileoverview Implements the HTMLHandler class
- *
- * @author dpvc@mathjax.org (Davide Cervone)
- */
- import {AbstractHandler} from '../../core/Handler.js';
- import {MinHTMLAdaptor} from '../../adaptors/HTMLAdaptor.js';
- import {HTMLDocument} from './HTMLDocument.js';
- import {OptionList} from '../../util/Options.js';
- /*****************************************************************/
- /**
- * Implements the HTMLHandler class (extends AbstractHandler)
- *
- * @template N The HTMLElement node class
- * @template T The Text node class
- * @template D The Document class
- */
- export class HTMLHandler<N, T, D> extends AbstractHandler<N, T, D> {
- /**
- * The DOMAdaptor for the document being handled
- */
- public adaptor: MinHTMLAdaptor<N, T, D>; // declare a more specific adaptor type
- /**
- * @override
- */
- public documentClass = HTMLDocument;
- /**
- * @override
- */
- public handlesDocument(document: any) {
- const adaptor = this.adaptor;
- if (typeof(document) === 'string') {
- try {
- document = adaptor.parse(document, 'text/html');
- } catch (err) {}
- }
- if (document instanceof adaptor.window.Document ||
- document instanceof adaptor.window.HTMLElement ||
- document instanceof adaptor.window.DocumentFragment) {
- return true;
- }
- return false;
- }
- /**
- * If the document isn't already a Document object, create one
- * using the given data
- *
- * @override
- */
- public create(document: any, options: OptionList) {
- const adaptor = this.adaptor;
- if (typeof(document) === 'string') {
- document = adaptor.parse(document, 'text/html');
- } else if (document instanceof adaptor.window.HTMLElement ||
- document instanceof adaptor.window.DocumentFragment) {
- let child = document as N;
- document = adaptor.parse('', 'text/html');
- adaptor.append(adaptor.body(document), child);
- }
- return super.create(document, options) as HTMLDocument<N, T, D>;
- }
- }
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