/*
 * 	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>
 *
 * jquery-1.3.2.min.js
 * function current(times)  // На кого нажали
*/

(function($) {

	$.fn.loopedSlider = function(options) {
		
	var defaults = {			
		container: ".container_new", 	//Class/id of main container. You can use "#container" for an id.
		slides: ".slides_new", 		//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
		frameLength: 5,          //Set pager frame length. 0 - no pager frame.
		frameSliderShow: true,  //Show frame slider when slides count less then frame length.
		frameSlideLength: 0,          //Set pager frame slide length. 0 - scroll to next frame.
		frameSlideSpeed: 0          //Set pager frame speed of slide animation. 1000 = 1 second.
	};
		
	this.each( function() {
		var obj 	= $(this);
		var o 		= $.extend(defaults,options);
		var distance 	= 0;
		var times 	= 1;
		var slides 	= $(o.slides,obj).children().size(); //5 	// Сколько всего страниц
		var width 	= $(o.slides,obj).children().outerWidth();
		var position 	= 0;
		var active 	= false;
		var number 	= 0; //3 					// С какой страницы начинаем
		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[rel=1]",obj).parent().addClass("active");
				if(number > o.frameLength)
				    $("." + o.pagination + " li a:[rel=" + number + "]", obj).parent().hide();
			});
			pagination = $("."+o.pagination+" li a",obj);

			for(var i = 0; i < o.frameLength - slides % o.frameLength; i++)
			    $("." + o.pagination,obj).append("<li style=\"display: none;\"><a rel=\"" + (number+1) + "\" href=\"#\"></a></li>");

				if(o.frameLength > 0 && (o.frameSliderShow || o.frameLength < slides)) {
					$("." + o.pagination,obj).append("<li class='pre_next left'><a class=\"frame_next\" id=\"a_left\" href=\"#\" rel=\"0\">&nbsp;</a></li>");
					$("#a_left").removeClass("frame_next");
					$("#a_left").addClass("frame_next_passive_l");
				}
				
				if(o.frameLength > 0 && (o.frameSliderShow || o.frameLength < buttons))
			    $("." + o.pagination,obj).append("<li class='pre_next right'><a class=\"frame_next\" id=\"a_right\" href=\"#\" rel=\"0\">&nbsp;</a></li>");
		} 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;
		}
		
		//$(".frame_prev", obj).click(function(){
		$("#a_left").click(function(){
			if(active===false) 
			{
			    var res = animate("prev_frame",true);
			    if(res > 0)
			    {
			        times = res;
			        animate("fade", times);
				    if(o.autoStart){
					    if (o.restart) {autoStart();}
					    else {clearInterval(sliderIntervalID);}
				    }
					//alert(times);
					//Левая
					if (times==1) { 
						$("#a_left").removeClass("frame_next");
						$("#a_left").addClass("frame_next_passive_l");
					}
					//Правая (возможно нужен if (xxx>slides) )
					//var xxx = times + o.frameLength; 
					//alert(xxx);
					$("#a_right").removeClass("frame_next_passive_r");
					$("#a_right").addClass("frame_next");
			    }

			} return false;
		});

		//$(".frame_next", obj).click(function(){
		$("#a_right", obj).click(function(){		
			if(active===false) 
			{
				var res = animate("next_frame",true);
				if(res)
				{
			        times = res;
			        animate("fade", times);
				    if(o.autoStart){
					    if (o.restart) {autoStart();}
					    else {clearInterval(sliderIntervalID);}
				    }
					
					var xxx = times + o.frameLength; 
					//Правая
					if (xxx >=  slides) {
						//alert(xxx);
						$("#a_right").removeClass("frame_next");
						$("#a_right").addClass("frame_next_passive_r");
						//$(this).removeClass("frame_next");
						//$(this).addClass("frame_next_passive_r");
						//$(.frame_next).html("frame_next_passive");
					}
					//Левая (возможно нужен if)
					$("#a_left").removeClass("frame_next_passive_l");
					$("#a_left").addClass("frame_next");				
					
					//alert("times = " + times); //начало
					//alert("slides = " + slides); //конец
					//alert("number = " + number);
					//alert("start = " + start);

				}
			} return false;
		});
		
		$(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) {
				times++;
				if(times > slides) times = 1;
				animate("fade", times);
//				animate("next",true);
//				if(times > slides)
//				    setFrame(0);
//				else
//				    setFrame(Math.ceil(times/o.frameLength) - 1);
				if(o.autoStart){
					if (o.restart) {autoStart();}
					else {clearInterval(sliderIntervalID);}
				}
			} return false;
		});
		
		$(".previous",obj).click(function(){
			if(active===false) {	
				times--;
				if(times < 1) times = slides;
				animate("fade", times);
//				animate("prev",true);
//				if(times < 1)
//				    setFrame(Math.ceil(slides/o.frameLength) - 1);
//				else
//				    setFrame(Math.ceil(times/o.frameLength) - 1);
				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 {
			    var rel = Number($(this).attr("rel"));
			    if(!isNaN(rel) && rel > 0)
			    {
				    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) { // На кого нажали
			///alert(times);
			///number = times;
			//alert("number "+number);
			
			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 setFrame(frame)
		{
		    var start = frame * o.frameLength + 1;
	        $("." + o.pagination + " li a", obj).each(function(){
	            var rel = Number($(this).attr("rel"));
	            if(rel > 0 && (rel < start || rel >= start + o.frameLength))
	                $(this).parent().hide();
	            else
	                $(this).parent().show();
	        });
	        return start;
		}
		
		function animate(dir,clicked){	
			active = true;	
			switch(dir){
			    case "next_frame":
			        var start = 0;
			        if(Math.ceil(times/o.frameLength) < Math.ceil(slides/o.frameLength))
			            start = setFrame(Math.ceil(times/o.frameLength))
			        active = false;
			        return start;
			        break;
			    case "prev_frame":
			        var start = 0;
			        if(Math.ceil(times/o.frameLength) > 1)
			            start = setFrame(Math.ceil(times/o.frameLength) - 2)
			        active = false;
			        return start;
			        break;
				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);