/*

 * 	loopedSlider 0.5.5 - jQuery plugin

 *	written by Nathan Searles	

 *	http://nathansearles.com/loopedslider/

 *

 *	Copyright (c) 2009 Nathan Searles (http://nathansearles.com/)

 *	Dual licensed under the MIT (MIT-LICENSE.txt)

 *	and GPL (GPL-LICENSE.txt) licenses.

 *

 *	Built for jQuery library

 *	http://jquery.com

 *	Compatible with jQuery 1.3+

 *

 */



/*

 *	markup example for $("#loopedSlider").loopedSlider();

 *

 *	<div id="loopedSlider">	

 *		<div class="container">

 *			<div class="slides">

 *				<div><img src="01.jpg" alt="" /></div>

 *				<div><img src="02.jpg" alt="" /></div>

 *				<div><img src="03.jpg" alt="" /></div>

 *				<div><img src="04.jpg" alt="" /></div>

 *			</div>

 *		</div>

 *		<a href="#" class="previous">previous</a>

 *		<a href="#" class="next">next</a>	

 *	</div>

 *

*/



(function($) {

	$.fn.loopedSlider = function(options) {

		

	var defaults = {			

		container: ".container", //Class/id of main container. You can use "#container" for an id.

		slides: ".slides", //Class/id of slide container. You can use "#slides" for an id.

		pagination: "pagination", //Class name of parent ul for numbered links. Don't add a "." here.

		containerClick: false, //Click slider to goto next slide? true/false

		autoStart: 0, //Set to positive number for true. This number will be the time between transitions.

		restart: 0, //Set to positive number for true. Sets time until autoStart is restarted.

		slidespeed: 300, //Speed of slide animation, 1000 = 1second.

		fadespeed: 200, //Speed of fade animation, 1000 = 1second.

		autoHeight: 0, //Set to positive number for true. This number will be the speed of the animation.

		addPagination: false //Add pagination links based on content? true/false 

	};

		

	this.each(function() {

		var obj = $(this);

		var o = $.extend(defaults,options);

		var distance = 0;

		var times = 1;

		var slides = $(o.slides,obj).children().size();

		var width = $(o.slides,obj).children().outerWidth();

		var position = 0;

		var active = false;

		var number = 0;

		var interval = 0;

		var restart = 0;

		var pagination = $("."+o.pagination+" li a",obj);



		if(o.addPagination && !$(pagination).length){

			var buttons = slides;

			$(obj).append("<ul class="+o.pagination+">");

			$(o.slides,obj).children().each(function(){

				if (number<buttons) {

					$("."+o.pagination,obj).append("<li><a rel="+(number+1)+" href=\"#\" >"+(number+1)+"</a></li>");

					number = number+1;

				} else {

					number = 0;

					return false;

				}

				$("."+o.pagination+" li a:eq(0)",obj).parent().addClass("active");

			});

			pagination = $("."+o.pagination+" li a",obj);

		} else {

			$(pagination,obj).each(function(){

				number=number+1;

				$(this).attr("rel",number);

				$(pagination.eq(0),obj).parent().addClass("active");

			});

		}

		

		if (slides===1) {

			$(o.slides,obj).children().css({position:"absolute",left:position,display:"block"});

			return;

		}

		

		$(o.slides,obj).css({width:(slides*width)});

		

		$(o.slides,obj).children().each(function(){

			$(this).css({position:"absolute",left:position,display:"block"});

			position=position+width;

		});



		$(o.slides,obj).children(":eq("+(slides-1)+")").css({position:"absolute",left:-width});

		

		if (slides>3) {

			$(o.slides,obj).children(":eq("+(slides-1)+")").css({position:"absolute",left:-width});

		}

		

		if(o.autoHeight){autoHeight(times);}

		

		$(".next",obj).click(function(){

			if(active===false) {

				animate("next",true);

				if(o.autoStart){

					if (o.restart) {autoStart();}

					else {clearInterval(sliderIntervalID);}

				}

			} return false;

		});

		

		$(".previous",obj).click(function(){

			if(active===false) {	

				animate("prev",true);

				if(o.autoStart){

					if (o.restart) {autoStart();}

					else {clearInterval(sliderIntervalID);}

				}

			} return false;

		});

		

		if (o.containerClick) {

			$(o.container,obj).click(function(){

				if(active===false) {

					animate("next",true);

					if(o.autoStart){

						if (o.restart) {autoStart();}

						else {clearInterval(sliderIntervalID);}

					}

				} return false;

			});

		}

		

		$(pagination,obj).click(function(){

			if ($(this).parent().hasClass("active")) {return false;}

			else {

				times = $(this).attr("rel");

				$(pagination,obj).parent().siblings().removeClass("active");

				$(this).parent().addClass("active");

				animate("fade",times);

				if(o.autoStart){

					if (o.restart) {autoStart();}

					else {clearInterval(sliderIntervalID);}

				}

			} return false;

		});

	

		if (o.autoStart) {

			sliderIntervalID = setInterval(function(){

				if(active===false) {animate("next",true);}

			},o.autoStart);

			function autoStart() {

				if (o.restart) {

				clearInterval(sliderIntervalID,interval);

				clearTimeout(restart);

					restart = setTimeout(function() {

						interval = setInterval(	function(){

							animate("next",true);

						},o.autoStart);

					},o.restart);

				} else {

					sliderIntervalID = setInterval(function(){

						if(active===false) {animate("next",true);}

					},o.autoStart);

				}

			};

		}

		

		function current(times) {

			if(times===slides+1){times = 1;}

			if(times===0){times = slides;}

			$(pagination,obj).parent().siblings().removeClass("active");

			$(pagination+"[rel='" + (times) + "']",obj).parent().addClass("active");

		};

		

		function autoHeight(times) {

			if(times===slides+1){times=1;}

			if(times===0){times=slides;}	

			var getHeight = $(o.slides,obj).children(":eq("+(times-1)+")",obj).outerHeight();

			$(o.container,obj).animate({height: getHeight},o.autoHeight);					

		};		

		

		function animate(dir,clicked){	

			active = true;	

			switch(dir){

				case "next":

					times = times+1;

					distance = (-(times*width-width));

					current(times);

					if(o.autoHeight){autoHeight(times);}

					if(slides<3){

						if (times===3){$(o.slides,obj).children(":eq(0)").css({left:(slides*width)});}

						if (times===2){$(o.slides,obj).children(":eq("+(slides-1)+")").css({position:"absolute",left:width});}

					}

					$(o.slides,obj).animate({left: distance}, o.slidespeed,function(){

						if (times===slides+1) {

							times = 1;

							$(o.slides,obj).css({left:0},function(){$(o.slides,obj).animate({left:distance})});							

							$(o.slides,obj).children(":eq(0)").css({left:0});

							$(o.slides,obj).children(":eq("+(slides-1)+")").css({ position:"absolute",left:-width});				

						}

						if (times===slides) $(o.slides,obj).children(":eq(0)").css({left:(slides*width)});

						if (times===slides-1) $(o.slides,obj).children(":eq("+(slides-1)+")").css({left:(slides*width-width)});

						active = false;

					});					

					break; 

				case "prev":

					times = times-1;

					distance = (-(times*width-width));

					current(times);

					if(o.autoHeight){autoHeight(times);}

					if (slides<3){

						if(times===0){$(o.slides,obj).children(":eq("+(slides-1)+")").css({position:"absolute",left:(-width)});}

						if(times===1){$(o.slides,obj).children(":eq(0)").css({position:"absolute",left:0});}

					}

					$(o.slides,obj).animate({left: distance}, o.slidespeed,function(){

						if (times===0) {

							times = slides;

							$(o.slides,obj).children(":eq("+(slides-1)+")").css({position:"absolute",left:(slides*width-width)});

							$(o.slides,obj).css({left: -(slides*width-width)});

							$(o.slides,obj).children(":eq(0)").css({left:(slides*width)});

						}

						if (times===2 ) $(o.slides,obj).children(":eq(0)").css({position:"absolute",left:0});

						if (times===1) $(o.slides,obj).children(":eq("+ (slides-1) +")").css({position:"absolute",left:-width});

						active = false;

					});

					break;

				case "fade":

					times = [times]*1;

					distance = (-(times*width-width));

					current(times);

					if(o.autoHeight){autoHeight(times);}

					$(o.slides,obj).children().fadeOut(o.fadespeed, function(){

						$(o.slides,obj).css({left: distance});

						$(o.slides,obj).children(":eq("+(slides-1)+")").css({left:slides*width-width});

						$(o.slides,obj).children(":eq(0)").css({left:0});

						if(times===slides){$(o.slides,obj).children(":eq(0)").css({left:(slides*width)});}

						if(times===1){$(o.slides,obj).children(":eq("+(slides-1)+")").css({ position:"absolute",left:-width});}

						$(o.slides,obj).children().fadeIn(o.fadespeed);

						active = false;

					});

					break; 

				default:

					break;

				}					

			};

		});

	};

})(jQuery);