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Diffstat (limited to 'js/mathjax/extensions/jsMath2jax.js')
| -rw-r--r-- | js/mathjax/extensions/jsMath2jax.js | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/js/mathjax/extensions/jsMath2jax.js b/js/mathjax/extensions/jsMath2jax.js new file mode 100644 index 0000000..2c75d4f --- /dev/null +++ b/js/mathjax/extensions/jsMath2jax.js @@ -0,0 +1,107 @@ +// @license magnet:?xt=urn:btih:8e4f440f4c65981c5bf93c76d35135ba5064d8b7dn=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 |