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// @license magnet:?xt=urn:btih:8e4f440f4c65981c5bf93c76d35135ba5064d8b7&dn=apache-2.0.txt Apache-2.0
/* -*- Mode: Javascript; indent-tabs-mode:nil; js-indent-level: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/*************************************************************
*
* MathJax/extensions/jsMath2jax.js
*
* Implements a jsMath to Jax preprocessor that locates jsMath-style
* <SPAN CLASS="math">...</SPAN> and <DIV CLASS="math">...</DIV> tags
* and replaces them with SCRIPT tags for processing by MathJax.
* (Note: use the tex2jax preprocessor to convert TeX delimiters or
* custom delimiters to MathJax SCRIPT tags. This preprocessor is
* only for the SPAN and DIV form of jsMath delimiters).
*
* To use this preprocessor, include "jsMath2jax.js" in the extensions
* array in your config/MathJax.js file, or the MathJax.Hub.Config() call
* in your HTML document.
*
* ---------------------------------------------------------------------
*
* Copyright (c) 2010-2020 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.
*/
MathJax.Extension.jsMath2jax = {
version: "2.7.9",
config: {
preview: "TeX" // Set to "none" to prevent preview strings from being inserted
// or to an array that specifies an HTML snippet to use for
// the preview.
},
PreProcess: function (element) {
if (!this.configured) {
this.config = MathJax.Hub.CombineConfig("jsMath2jax",this.config);
if (this.config.Augment) {MathJax.Hub.Insert(this,this.config.Augment)}
if (typeof(this.config.previewTeX) !== "undefined" && !this.config.previewTeX)
{this.config.preview = "none"} // backward compatibility for previewTeX parameter
this.previewClass = MathJax.Hub.config.preRemoveClass;
this.configured = true;
}
if (typeof(element) === "string") {element = document.getElementById(element)}
if (!element) {element = document.body}
var span = element.getElementsByTagName("span"), i;
for (i = span.length-1; i >= 0; i--)
{if (String(span[i].className).match(/(^| )math( |$)/)) {this.ConvertMath(span[i],"")}}
var div = element.getElementsByTagName("div");
for (i = div.length-1; i >= 0; i--)
{if (String(div[i].className).match(/(^| )math( |$)/)) {this.ConvertMath(div[i],"; mode=display")}}
},
ConvertMath: function (node,mode) {
if (node.getElementsByTagName("script").length === 0) {
var parent = node.parentNode,
script = this.createMathTag(mode,node.innerHTML);
if (node.nextSibling) {parent.insertBefore(script,node.nextSibling)}
else {parent.appendChild(script)}
if (this.config.preview !== "none") {this.createPreview(node)}
parent.removeChild(node);
}
},
createPreview: function (node) {
var previewClass = MathJax.Hub.config.preRemoveClass;
var preview = this.config.preview;
if (preview === "none") return;
if ((node.previousSibling||{}).className === previewClass) return;
if (preview === "TeX") {preview = [this.filterPreview(node.innerHTML)]}
if (preview) {
preview = MathJax.HTML.Element("span",{className:previewClass},preview);
node.parentNode.insertBefore(preview,node);
}
},
createMathTag: function (mode,tex) {
tex = tex.replace(/</g,"<").replace(/>/g,">").replace(/&/g,"&");
var script = document.createElement("script");
script.type = "math/tex" + mode;
MathJax.HTML.setScript(script,tex);
return script;
},
filterPreview: function (tex) {return tex}
};
// We register the preprocessors with the following priorities:
// - mml2jax.js: 5
// - jsMath2jax.js: 8
// - asciimath2jax.js, tex2jax.js: 10 (default)
// See issues 18 and 484 and the other *2jax.js files.
MathJax.Hub.Register.PreProcessor(["PreProcess",MathJax.Extension.jsMath2jax],8);
MathJax.Ajax.loadComplete("[MathJax]/extensions/jsMath2jax.js");
// @license-end
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