mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/Math
synced 2024-11-30 10:25:29 +00:00
93 lines
3.9 KiB
JavaScript
93 lines
3.9 KiB
JavaScript
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/**
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* From https://en.wikipedia.org/wiki/User:Nageh/mathJax/config/TeX-AMS-texvc_HTML.js
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*/
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MathJax.Extension.wiki2jax = {
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version: "1.0",
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config: {
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element: null, // The ID of the element to be processed
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// (defaults to full document)
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preview: "TeX" // Set to "none" to prevent preview strings from being inserted
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// or to an array that specifies an HTML snippet to use for
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// the preview.
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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.wiki2jax||{}));
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if (this.config.Augment) {MathJax.Hub.Insert(this,this.config.Augment)}
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if (typeof(this.config.previewTeX) !== "undefined" && !this.config.previewTeX)
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{this.config.preview = "none"} // backward compatibility for previewTeX parameter
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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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var span, i;
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if ((!element || element == document.body) && mathJax.span) { // dirty hack
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span = mathJax.span;
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i = mathJax.spanIndex;
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}
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else {
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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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span = element.getElementsByTagName("span");
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i = span.length-1;
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}
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for (; i >= 0; i--)
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if (span[i].className === "tex") this.ConvertMath(span[i])
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},
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ConvertMath: function (node) {
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var parent = node.parentNode,
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mode = parent.tagName === "DD" && parent.firstChild === parent.lastChild ? "; mode=display" : "",
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tex = node.innerHTML.substring(node.innerHTML[0]=='$',node.innerHTML.length-(node.innerHTML[node.innerHTML.length-1]=='$'));
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tex = tex.replace(/</g,"<").replace(/>/g,">").replace(/&/g,"&").replace(/ /g," ");
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tex = tex.replace(/\\iiint([^!]*)!\\!\\!\\!\\!.*\\subset\\!\\supset/g,"\\iiint$1mkern-2.5em\\subset\\!\\supset").replace(/\\iint([^!]*)!\\!\\!\\!\\!\\!\\!\\!\\!\\!\\!(.*)\\subset\\!\\supset/g,"\\iint$1mkern-1.65em$2\\subset\\!\\!\\supset").replace(/\\int\\!\\!\\!(\\!)+\\int\\!\\!\\!(\\!)+\\int([^!]*)!\\!\\!\\!\\!.*\\bigcirc(\\,)*/g,"\\iiint$3mkern-2.5em\\subset\\!\\supset").replace(/\\int\\!\\!\\!(\\!)+\\int([^!]*)!\\!\\!\\!\\!\\!\\!\\!\\!(.*)\\bigcirc(\\,)*/g,"\\iint$2mkern-1.65em$3\\subset\\!\\!\\supset");
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if (mode === "") {
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tex = tex.replace(/ *\\scriptstyle(\W)/g,"\\textstyle$1").replace(/ *\\scriptscriptstyle(\W)/g,"\\scriptstyle$1");
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if (parent.firstChild === node) tex = "\\displaystyle "+tex;
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}
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var i;
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while ((i = tex.search(/\\color{/)) != -1) {
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var braces = 0;
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for (i += 6; i < tex.length; i++) {
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if (tex[i] == '{') braces++;
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else if (tex[i] == '}') {
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if (braces-- == 0)
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break;
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}
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}
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tex = (tex.substring(0, i) + "}" + tex.substring(i, tex.length)).replace(/\\color{(\w*)}/, "\\textcolor{$1}{");
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}
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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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if (node.nextSibling) {parent.insertBefore(script,node.nextSibling)}
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else {parent.appendChild(script)}
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if (this.config.preview !== "none") {this.createPreview(node)}
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parent.removeChild(node);
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},
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createPreview: function (node) {
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var preview;
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if (this.config.preview === "TeX") {preview = [this.filterTeX(node.innerHTML)]}
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else if (this.config.preview instanceof Array) {preview = this.config.preview}
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if (preview) {
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preview = MathJax.HTML.Element("span",{className: MathJax.Hub.config.preRemoveClass},preview);
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node.parentNode.insertBefore(preview,node);
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}
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},
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filterTeX: function (tex) {return tex}
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};
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MathJax.Hub.Register.PreProcessor(["PreProcess",MathJax.Extension.wiki2jax]);
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MathJax.Ajax.loadComplete("[MathJax]/extensions/wiki2jax.js");
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