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TiddlyWiki5/plugins/tiddlywiki/highlight/highlightblock.js
Jermolene 4be5f0abe8 Switch highlight plugin under Node.js to use DOM rather than raw HTML
Hi @welford I wondered if you could kindly review this commit, since
you authored the original code? Before this commit, I was running into
a crash when running `prerelease-bld.sh` from
`build.jermolene.github.io`, caused by using raw HTML for the
highlighted block. Switching to the fake dom seems to fix things, but
I’d like a second pair of eyes.
2016-09-28 11:34:15 +01:00

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1.1 KiB
JavaScript

/*\
title: $:/plugins/tiddlywiki/highlight/highlightblock.js
type: application/javascript
module-type: widget
Wraps up the fenced code blocks parser for highlight and use in TiddlyWiki5
\*/
(function() {
/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";
var TYPE_MAPPINGS_BASE = "$:/config/HighlightPlugin/TypeMappings/";
var CodeBlockWidget = require("$:/core/modules/widgets/codeblock.js").codeblock;
var hljs = require("$:/plugins/tiddlywiki/highlight/highlight.js");
hljs.configure({tabReplace: " "});
CodeBlockWidget.prototype.postRender = function() {
var domNode = this.domNodes[0],
language = this.language,
tiddler = this.wiki.getTiddler(TYPE_MAPPINGS_BASE + language);
if(tiddler) {
language = tiddler.fields.text || "";
}
if(language) {
try {
domNode.className = language.toLowerCase() + " hljs";
hljs.highlightBlock(domNode);
} catch(err) {
// Can't easily tell if a language is registered or not in the packed version of hightlight.js,
// so we silently fail and the codeblock remains unchanged
}
}
};
})();