mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-12-04 23:39:57 +00:00
100 lines
2.5 KiB
JavaScript
100 lines
2.5 KiB
JavaScript
/*\
|
|
title: $:/plugins/tiddlywiki/katex/wrapper.js
|
|
type: application/javascript
|
|
module-type: widget
|
|
|
|
Wrapper for `katex.min.js` that provides a `<$latex>` widget. It is also available under the alias `<$katex>`
|
|
|
|
\*/
|
|
(function(){
|
|
|
|
/*jslint node: true, browser: true */
|
|
/*global $tw: false */
|
|
"use strict";
|
|
|
|
var katex = require("$:/plugins/tiddlywiki/katex/katex.min.js"),
|
|
chemParse = require("$:/plugins/tiddlywiki/katex/mhchem.min.js"),
|
|
Widget = require("$:/core/modules/widgets/widget.js").widget;
|
|
|
|
katex.macros = {};
|
|
katex.updateMacros = function() {
|
|
var tiddlers = $tw.wiki.getTiddlersWithTag("$:/tags/KaTeX/Macro"),
|
|
regex = /#\d/g, // Remove the arguments like #1#2
|
|
tid, macro, cmd;
|
|
for(var i=0; i < tiddlers.length; i++) {
|
|
tid = $tw.wiki.getTiddler(tiddlers[i]);
|
|
try {
|
|
macro = tid.fields["caption"];
|
|
macro = macro.replace(regex, "");
|
|
cmd = tid.fields["text"];
|
|
katex.macros[macro] = cmd;
|
|
} catch(ex) {// Catch the bad ones
|
|
};
|
|
};
|
|
};
|
|
|
|
var KaTeXWidget = function(parseTreeNode,options) {
|
|
this.initialise(parseTreeNode,options);
|
|
};
|
|
|
|
/*
|
|
Inherit from the base widget class
|
|
*/
|
|
KaTeXWidget.prototype = new Widget();
|
|
|
|
/*
|
|
Render this widget into the DOM
|
|
*/
|
|
KaTeXWidget.prototype.render = function(parent,nextSibling) {
|
|
// Housekeeping
|
|
this.parentDomNode = parent;
|
|
this.computeAttributes();
|
|
this.execute();
|
|
// Get the source text
|
|
var text = this.getAttribute("text",this.parseTreeNode.text || "");
|
|
var displayMode = this.getAttribute("displayMode",this.parseTreeNode.displayMode || "false") === "true";
|
|
katex.updateMacros();
|
|
// Render it into a span
|
|
var span = this.document.createElement("span"),
|
|
options = {throwOnError: false, displayMode: displayMode, macros: katex.macros};
|
|
try {
|
|
if(!this.document.isTiddlyWikiFakeDom) {
|
|
katex.render(text,span,options);
|
|
} else {
|
|
span.innerHTML = katex.renderToString(text,options);
|
|
}
|
|
} catch(ex) {
|
|
span.className = "tc-error";
|
|
span.textContent = ex;
|
|
}
|
|
// Insert it into the DOM
|
|
parent.insertBefore(span,nextSibling);
|
|
this.domNodes.push(span);
|
|
};
|
|
|
|
/*
|
|
Compute the internal state of the widget
|
|
*/
|
|
KaTeXWidget.prototype.execute = function() {
|
|
// Nothing to do for a katex widget
|
|
};
|
|
|
|
/*
|
|
Selectively refreshes the widget if needed. Returns true if the widget or any of its children needed re-rendering
|
|
*/
|
|
KaTeXWidget.prototype.refresh = function(changedTiddlers) {
|
|
var changedAttributes = this.computeAttributes();
|
|
if(changedAttributes.text) {
|
|
this.refreshSelf();
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
};
|
|
|
|
exports.latex = KaTeXWidget;
|
|
exports.katex = KaTeXWidget;
|
|
|
|
})();
|
|
|