jQuery Tag Filter

jquery.tagfilter.js

/**
 * jQuery Tag Filter
 *
 * @version 0.1
 * @requires jQuery 1.7.1
 * @author Artem Sapegin
 * @copyright 2011 Artem Sapegin (sapegin.ru)
 * @license http://creativecommons.org/licenses/by/3.0/
 */

(function (factory) {
    if (typeof define === 'function' && define.amd) {
        define(['jquery'], factory);  // AMD. Register as an anonymous module.
    } else {
        factory(jQuery);  // Browser globals
    }
}(function ($) {

$.fn.tagFilter = function(options) {
	options = $.extend({}, $.fn.tagFilter.defaults, options);
	
	return this.each(function() {
		new TagFilter($(this), options);
	});
};

$.fn.tagFilter.defaults = {
	barSelector: '.tags',
	linkSelector: 'li',
	linkActiveClass: 'active',
	tagClassPrefix: 'tag_'
};

function TagFilter(container, options) {
	this.container = container;
	this.options = options;
	this.init();
}

TagFilter.prototype = {
	init: function() {
		this.bar = this.container.find(this.options.barSelector);
		if (!this.bar.length) return;

		this.bar.delegate(this.options.linkSelector, 'click', $.proxy(this.tagClick, this));

		this.tagClassRegExp = new RegExp('\\b' + this.options.tagClassPrefix + '.*?\\b', 'g');
	},

	tagClick: function(e) {
		var link = $(e.target),
			tag = link.data('tag-id');

		// Replace tag class on container
		this.container[0].className = this.container[0].className.replace(this.tagClassRegExp, '');
		if (tag) this.container.addClass(this.options.tagClassPrefix + tag);
		
		// Highlight button
		link.siblings().removeClass(this.options.linkActiveClass);
		link.addClass(this.options.linkActiveClass);

		return false;
	}
};

}));