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Updated rendering operations to improve performance

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Cheng-Han, Wu
2016-02-11 14:35:25 -06:00
parent 2a774064af
commit 8db142554f
4 changed files with 21 additions and 15 deletions
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9
public/js/index.js
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@@ -2132,10 +2132,15 @@ var lastResult = null;
function updateViewInner() {
if (currentMode == modeType.edit || !isDirty) return;
var value = editor.getValue();
var lastMeta = md.meta;
md.meta = {};
md.render(value); //only for get meta
parseMeta(md, ui.area.markdown, $('#toc'), $('#toc-affix'));
var rendered = md.render(value);
// only render again when meta changed
if (JSON.stringify(md.meta) != JSON.stringify(lastMeta)) {
parseMeta(md, ui.area.markdown, $('#toc'), $('#toc-affix'));
rendered = md.render(value);
}
// prevent XSS
rendered = preventXSS(rendered);
var result = postProcess(rendered).children().toArray();
partialUpdate(result, lastResult, ui.area.markdown.children().toArray());