78 lines
3.1 KiB
JavaScript
78 lines
3.1 KiB
JavaScript
/*************************************************************
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*
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* MathJax/extensions/jsMath2jax.js
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*
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* Implements a jsMath to Jax preprocessor that locates jsMath-style
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* <SPAN CLASS="math">...</SPAN> and <DIV CLASS="math">...</DIV> tags
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* and replaces them with SCRIPT tags for processing by MathJax.
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* (Note: use the tex2jax preprocessor to convert TeX delimiters or
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* custom delimiters to MathJax SCRIPT tags. This preprocessor is
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* only for the SPAN and DIV form of jsMath delimiters).
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*
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* To use this preprocessor, include "jsMath2jax.js" in the extensions
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* array in your config/MathJax.js file, or the MathJax.Hub.Config() call
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* in your HTML document.
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*
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* ---------------------------------------------------------------------
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*
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* Copyright (c) 2010 Design Science, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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MathJax.Extension.jsMath2jax = {
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config: {
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previewTeX: true, // Set to false to prevent preview strings from being inserted
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},
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PreProcess: function (element) {
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if (!this.configured) {
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MathJax.Hub.Insert(this.config,(MathJax.Hub.config.jsMath2jax||{}));
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this.previewClass = MathJax.Hub.config.preRemoveClass;
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this.configured = true;
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}
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if (typeof(element) === "string") {element = document.getElementById(element)}
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if (!element) {element = this.config.element || document.body}
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var span = element.getElementsByTagName("span"), i, m;
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for (i = 0, m = span.length; i < m; i++)
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{if (String(span[i].className).match(/\bmath\b/)) {this.ConvertMath(span[i],"")}}
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var div = element.getElementsByTagName("div");
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for (i = 0, m = div.length; i < m; i++)
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{if (String(div[i].className).match(/\bmath\b/)) {this.ConvertMath(div[i],"; mode=display")}}
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},
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ConvertMath: function (node,mode) {
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var parent = node.parentNode,
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script = this.CreateMathTag(mode,node.innerHTML);
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if (node.nextSibling) {parent.insertBefore(script,node.nextSibling)}
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else {parent.appendChild(script)}
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if (this.config.previewTeX) {
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node.className = String(node.className).replace(/\bmath\b/,this.previewClass);
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} else {
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parent.removeChild(node);
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}
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},
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CreateMathTag: function (mode,tex) {
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var script = document.createElement("script");
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script.type = "math/tex" + mode;
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if (MathJax.Hub.Browser.isMSIE) {script.text = tex}
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else {script.appendChild(document.createTextNode(tex))}
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return script;
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}
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};
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MathJax.Hub.Register.PreProcessor(["PreProcess",MathJax.Extension.jsMath2jax]);
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MathJax.Ajax.loadComplete("[MathJax]/extensions/jsMath2jax.js");
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