Improve version of JQuery

src/robotide/lib/robot/htmldata/lib/jquery.highlight.min.js

@@ -4,8 +4,105 @@
  * 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(e,t,n,r){if(e.nodeType===3){var i=e.data.match(t);if(i){var s=document.createElement(n||"span");s.className=r||"highlight";var o=e.splitText(i.index);o.splitText(i[0].length);var u=o.cloneNode(true);s.appendChild(u);o.parentNode.replaceChild(s,o);return 1}}else if(e.nodeType===1&&e.childNodes&&!/(script|style)/i.test(e.tagName)&&!(e.tagName===n.toUpperCase()&&e.className===r)){for(var a=0;a<e.childNodes.length;a++){a+=jQuery.highlight(e.childNodes[a],t,n,r)}}return 0}});jQuery.fn.unhighlight=function(e){var t={className:"highlight",element:"span"};jQuery.extend(t,e);return this.find(t.element+"."+t.className).each(function(){var e=this.parentNode;e.replaceChild(this.firstChild,this);e.normalize()}).end()};jQuery.fn.highlight=function(e,t){var n={className:"highlight",element:"span",caseSensitive:false,wordsOnly:false};jQuery.extend(n,t);if(e.constructor===String){e=[e]}e=jQuery.grep(e,function(e,t){return e!=""});e=jQuery.map(e,function(e,t){return e.replace(/[-[\]{}()*+?.,\\^$|#\s]/g,"\\$&")});if(e.length==0){return this}var r=n.caseSensitive?"":"i";var i="("+e.join("|")+")";if(n.wordsOnly){i="\\b"+i+"\\b"}var s=new RegExp(i,r);return this.each(function(){jQuery.highlight(this,s,n.element,n.className)})}
+
+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', 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', element: 'span', caseSensitive: false, wordsOnly: false };
+    jQuery.extend(settings, options);
+
+    if (words.constructor === String) {
+        words = [words];
+    }
+    words = jQuery.grep(words, function(word, i){
+      return word != '';
+    });
+    words = jQuery.map(words, function(word, i) {
+      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);
+    });
+};
+