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- gitbook.require(["jQuery"], function(jQuery) {
-
- /*
- * 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
- *
- * 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', 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];
- // also match 'foo-bar' if search for 'foo bar'
- if (/\s/.test(words[0])) words.push(words[0].replace(/\s+/, '-'));
- }
- 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);
- });
- };
-
- });
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