mirror of
https://github.com/codeninjasllc/discourse.git
synced 2024-11-23 23:58:31 -05:00
109 lines
3.9 KiB
JavaScript
109 lines
3.9 KiB
JavaScript
// forked cause we may want to amend the logic a bit
|
|
/*
|
|
* jQuery Highlight plugin
|
|
*
|
|
* Based on highlight v3 by Johann Burkard
|
|
* http://johannburkard.de/blog/programming/javascript/highlight-javascript-text-higlighting-jquery-plugin.html
|
|
*
|
|
* Code a little bit refactored and cleaned (in my humble opinion).
|
|
* Most important changes:
|
|
* - has an option to highlight only entire words (wordsOnly - false by default),
|
|
* - has an option to be case sensitive (caseSensitive - false by default)
|
|
* - highlight element tag and class names can be specified in options
|
|
*
|
|
* Usage:
|
|
* // wrap every occurrance of text 'lorem' in content
|
|
* // with <span class='highlight'> (default options)
|
|
* $('#content').highlight('lorem');
|
|
*
|
|
* // search for and highlight more terms at once
|
|
* // so you can save some time on traversing DOM
|
|
* $('#content').highlight(['lorem', 'ipsum']);
|
|
* $('#content').highlight('lorem ipsum');
|
|
*
|
|
* // search only for entire word 'lorem'
|
|
* $('#content').highlight('lorem', { wordsOnly: true });
|
|
*
|
|
* // don't ignore case during search of term 'lorem'
|
|
* $('#content').highlight('lorem', { caseSensitive: true });
|
|
*
|
|
* // wrap every occurrance of term 'ipsum' in content
|
|
* // with <em class='important'>
|
|
* $('#content').highlight('ipsum', { element: 'em', className: 'important' });
|
|
*
|
|
* // remove default highlight
|
|
* $('#content').unhighlight();
|
|
*
|
|
* // remove custom highlight
|
|
* $('#content').unhighlight({ element: 'em', className: 'important' });
|
|
*
|
|
*
|
|
* Copyright (c) 2009 Bartek Szopka
|
|
*
|
|
* Licensed under MIT license.
|
|
*
|
|
*/
|
|
|
|
jQuery.extend({
|
|
highlight: function (node, re, nodeName, className) {
|
|
if (node.nodeType === 3) {
|
|
var match = node.data.match(re);
|
|
if (match) {
|
|
var highlight = document.createElement(nodeName || 'span');
|
|
highlight.className = className || 'highlight';
|
|
var wordNode = node.splitText(match.index);
|
|
wordNode.splitText(match[0].length);
|
|
var wordClone = wordNode.cloneNode(true);
|
|
highlight.appendChild(wordClone);
|
|
wordNode.parentNode.replaceChild(highlight, wordNode);
|
|
return 1; //skip added node in parent
|
|
}
|
|
} else if ((node.nodeType === 1 && node.childNodes) && // only element nodes that have children
|
|
!/(script|style)/i.test(node.tagName) && // ignore script and style nodes
|
|
!(node.tagName === nodeName.toUpperCase() && node.className === className)) { // skip if already highlighted
|
|
for (var i = 0; i < node.childNodes.length; i++) {
|
|
i += jQuery.highlight(node.childNodes[i], re, nodeName, className);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
});
|
|
|
|
jQuery.fn.unhighlight = function (options) {
|
|
var settings = { className: 'highlight-strong', element: 'span' };
|
|
jQuery.extend(settings, options);
|
|
|
|
return this.find(settings.element + "." + settings.className).each(function () {
|
|
var parent = this.parentNode;
|
|
parent.replaceChild(this.firstChild, this);
|
|
parent.normalize();
|
|
}).end();
|
|
};
|
|
|
|
jQuery.fn.highlight = function (words, options) {
|
|
var settings = { className: 'highlight-strong', element: 'span', caseSensitive: false, wordsOnly: false };
|
|
jQuery.extend(settings, options);
|
|
|
|
if (words.constructor === String) {
|
|
words = [words];
|
|
}
|
|
words = jQuery.grep(words, function(word){
|
|
return word !== '';
|
|
});
|
|
words = jQuery.map(words, function(word) {
|
|
return word.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
|
|
});
|
|
if (words.length === 0) { return this; }
|
|
|
|
var flag = settings.caseSensitive ? "" : "i";
|
|
var pattern = "(" + words.join("|") + ")";
|
|
if (settings.wordsOnly) {
|
|
pattern = "\\b" + pattern + "\\b";
|
|
}
|
|
var re = new RegExp(pattern, flag);
|
|
|
|
return this.each(function () {
|
|
jQuery.highlight(this, re, settings.element, settings.className);
|
|
});
|
|
};
|
|
|