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chamilo-lms/main/inc/lib/javascript/jquery.highlight.js

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2.2 KiB

/*
highlight v3
Highlights arbitrary terms.
<http://johannburkard.de/blog/programming/javascript/highlight-javascript-text-higlighting-jquery-plugin.html>
MIT license.
Johann Burkard <http://johannburkard.de> <mailto:jb@eaio.com>
Julio Montoya <gugli100@gmail.com> fixes for the Glossary tool to strict search
*/
jQuery.fn.highlight = function(pat,real_code) {
function innerHighlight(node, pat) {
var skip = 0;
if (node.nodeType == 3 ) {
// Highlight all coincidences
//var pos = node.data.toUpperCase().indexOf(pat);
//Highlight strict, exact words
var SearchRegExp = new RegExp("(\\b)"+pat+"(\\b)","gi");
var pos = node.nodeValue.search(SearchRegExp);
if (pos >= 0 ) {
var spannode = document.createElement('a');
spannode.className = 'glossary-ajax';
spannode.style.color = '#084B8A';
spannode.style.fontWeight='100';
spannode.style.textDecoration = 'none';
spannode.name = 'link'+real_code;
spannode.href = '#';
var SearchRegExp = new RegExp("(" + pat +")","gi");
var MatchRegExp = node.nodeValue.match(SearchRegExp);
if (MatchRegExp == null) {
MatchRegExp = new Array();
}
if (MatchRegExp.length > 0 && node.nodeValue[pat.length+1] != '') {
var middlebit = node.splitText(pos);
var endbit = middlebit.splitText(pat.length);
if (endbit.nodeValue[0] == null || endbit.nodeValue[0] == ' ' || endbit.nodeValue[0] == '.' || endbit.nodeValue[0] == ',' || endbit.nodeValue[0] == ';' || endbit.nodeValue[0] == '"') {
var middleclone = middlebit.cloneNode(true);
spannode.appendChild(middleclone);
middlebit.parentNode.replaceChild(spannode, middlebit);
}
}
skip = 1;
}
} else if (node.nodeType == 1 && node.childNodes && !/(script|style)/i.test(node.tagName)) {
for (var i = 0; i <node.childNodes.length ; ++i) {
i += innerHighlight(node.childNodes[i], pat);
}
}
return skip;
}
return this.each(function() {
innerHighlight(this, pat.toUpperCase());
});
};
jQuery.fn.removeHighlight = function() {
return this.find("a.highlight").each(function() {
this.parentNode.firstChild.nodeName;
with (this.parentNode) {
replaceChild(this.firstChild, this);
normalize();
}
}).end();
};