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- /*************************************************************
- *
- * Copyright (c) 2018-2022 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 Methods for the Html package.
- *
- * @author v.sorge@mathjax.org (Volker Sorge)
- */
- import TexParser from '../TexParser.js';
- import {ParseMethod} from '../Types.js';
- import NodeUtil from '../NodeUtil.js';
- import {MmlNode} from '../../../core/MmlTree/MmlNode.js';
- // Namespace
- let HtmlMethods: Record<string, ParseMethod> = {};
- /**
- * Implements \href{url}{math}
- * @param {TexParser} parser The calling parser.
- * @param {string} name The macro name.
- */
- HtmlMethods.Href = function(parser: TexParser, name: string) {
- const url = parser.GetArgument(name);
- const arg = GetArgumentMML(parser, name);
- NodeUtil.setAttribute(arg, 'href', url);
- parser.Push(arg);
- };
- /**
- * Implements \class{name}{math}
- * @param {TexParser} parser The calling parser.
- * @param {string} name The macro name.
- */
- HtmlMethods.Class = function(parser: TexParser, name: string) {
- let CLASS = parser.GetArgument(name);
- const arg = GetArgumentMML(parser, name);
- let oldClass = NodeUtil.getAttribute(arg, 'class');
- if (oldClass) {
- CLASS = oldClass + ' ' + CLASS;
- }
- NodeUtil.setAttribute(arg, 'class', CLASS);
- parser.Push(arg);
- };
- /**
- * Implements \style{style-string}{math}
- * @param {TexParser} parser The calling parser.
- * @param {string} name The macro name.
- */
- HtmlMethods.Style = function(parser: TexParser, name: string) {
- let style = parser.GetArgument(name);
- const arg = GetArgumentMML(parser, name);
- // check that it looks like a style string
- let oldStyle = NodeUtil.getAttribute(arg, 'style');
- if (oldStyle) {
- if (style.charAt(style.length - 1) !== ';') {
- style += ';';
- }
- style = oldStyle + ' ' + style;
- }
- NodeUtil.setAttribute(arg, 'style', style);
- parser.Push(arg);
- };
- /**
- * Implements \cssId{id}{math}
- * @param {TexParser} parser The calling parser.
- * @param {string} name The macro name.
- */
- HtmlMethods.Id = function(parser: TexParser, name: string) {
- const ID = parser.GetArgument(name);
- const arg = GetArgumentMML(parser, name);
- NodeUtil.setAttribute(arg, 'id', ID);
- parser.Push(arg);
- };
- /**
- * Parses the math argument of the above commands and returns it as single
- * node (in an mrow if necessary). The HTML attributes are then
- * attached to this element.
- * @param {TexParser} parser The calling parser.
- * @param {string} name The calling macro name.
- * @return {MmlNode} The math node.
- */
- let GetArgumentMML = function(parser: TexParser, name: string): MmlNode {
- let arg = parser.ParseArg(name);
- if (!NodeUtil.isInferred(arg)) {
- return arg;
- }
- let children = NodeUtil.getChildren(arg);
- if (children.length === 1) {
- return children[0];
- }
- const mrow = parser.create('node', 'mrow');
- NodeUtil.copyChildren(arg, mrow);
- NodeUtil.copyAttributes(arg, mrow);
- return mrow;
- };
- export default HtmlMethods;
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