mirror of https://github.com/zulip/zulip.git
54 lines
1.3 KiB
JavaScript
54 lines
1.3 KiB
JavaScript
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/*
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highlight v4
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Highlights arbitrary terms.
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<http://johannburkard.de/blog/programming/javascript/highlight-javascript-text-higlighting-jquery-plugin.html>
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MIT license.
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Johann Burkard
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<http://johannburkard.de>
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<mailto:jb@eaio.com>
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*/
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jQuery.fn.highlight = function(pat) {
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function innerHighlight(node, pat) {
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var skip = 0;
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if (node.nodeType == 3) {
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var pos = node.data.toUpperCase().indexOf(pat);
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if (pos >= 0) {
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var spannode = document.createElement('span');
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spannode.className = 'highlight';
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var middlebit = node.splitText(pos);
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var endbit = middlebit.splitText(pat.length);
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var middleclone = middlebit.cloneNode(true);
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spannode.appendChild(middleclone);
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middlebit.parentNode.replaceChild(spannode, middlebit);
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skip = 1;
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}
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}
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else if (node.nodeType == 1 && node.childNodes && !/(script|style)/i.test(node.tagName)) {
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for (var i = 0; i < node.childNodes.length; ++i) {
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i += innerHighlight(node.childNodes[i], pat);
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}
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}
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return skip;
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}
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return this.length && pat && pat.length ? this.each(function() {
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innerHighlight(this, pat.toUpperCase());
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}) : this;
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};
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jQuery.fn.removeHighlight = function() {
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return this.find("span.highlight").each(function() {
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this.parentNode.firstChild.nodeName;
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with (this.parentNode) {
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replaceChild(this.firstChild, this);
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normalize();
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}
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}).end();
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};
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