/*
 * 	Easy Slider 1.7 - jQuery plugin
 *	written by Alen Grakalic	
 *	http://cssglobe.com/post/4004/easy-slider-15-the-easiest-jquery-plugin-for-sliding
 *
 *	Copyright (c) 2009 Alen Grakalic (http://cssglobe.com)
 *	Dual licensed under the MIT (MIT-LICENSE.txt)
 *	and GPL (GPL-LICENSE.txt) licenses.
 *
 *	Built for jQuery library
 *	http://jquery.com
 *
 */
 
/*
 *	markup example for $("#slider").easySlider();
 *	
 * 	<div id="slider">
 *		<ul>
 *			<li><img src="images/01.jpg" alt="" /></li>
 *			<li><img src="images/02.jpg" alt="" /></li>
 *			<li><img src="images/03.jpg" alt="" /></li>
 *			<li><img src="images/04.jpg" alt="" /></li>
 *			<li><img src="images/05.jpg" alt="" /></li>
 *		</ul>
 *	</div>
 *
 */

(function($) {

	$.fn.easySlider = function (options){
		  
		// default configuration properties
		var defaults = {			
			prevId: 		'prevBtn',
			prevText: 		'Previous',
			nextId: 		'nextBtn',	
			nextText: 		'Next',
			controlsShow:	true,
			controlsBefore:	'',
			controlsAfter:	'',	
			controlsFade:	true,
			firstId: 		'firstBtn',
			firstText: 		'First',
			firstShow:		false,
			lastId: 		'lastBtn',	
			lastText: 		'Last',
			lastShow:		false,				
			vertical:		false,
			speed: 			400,
			auto:			true,
			pause:			8000,
			continuous:		true, 
			numeric: 		false,
			numericId: 		'controls',
			delay : 		8000
		}; 
		
		var options = $.extend(defaults, options);  
				
		this.each(function() {  
			var obj = $(this); 				
			var s = $("li", obj).length;
			var imgs = $('li img', obj);
			var w = $("li", obj).width(); 
			var h = $("li", obj).height(); 
			var clickable = true;
			var ctrl_pnts = [];
			var ts = s-1;
			var t = 0;
			
			obj.width(w); 
			obj.height(h); 
			obj.css("overflow","hidden");
			$("ul", obj).css('width',s*w);			
			
			if(options.continuous){
				$("ul", obj).prepend($("ul li:last-child", obj).clone().css("margin-left","-"+ w +"px"));
				$("ul", obj).append($("ul li:nth-child(2)", obj).clone());
				$("ul", obj).css('width',(s+1)*w);
			};				
			
			if(!options.vertical) $("li", obj).css('float','left');
								
			var ctrl_w = Math.floor($("#slider li").innerWidth() /s) ;
			if(options.controlsShow){
				var html = options.controlsBefore;				
				if(options.numeric){
					html += '<ol id="'+ options.numericId +'"><div id="scroller" style="width: '+ctrl_w+'px;"><img src="wp-content/themes/eskeemo/images/slider.png" /></div></ol>';
				} else {
					if(options.firstShow) html += '<span id="'+ options.firstId +'"><a href=\"javascript:void(0);\">'+ options.firstText +'</a></span>';
					html += ' <span id="'+ options.prevId +'"><a href=\"javascript:void(0);\">'+ options.prevText +'</a></span>';
					html += ' <span id="'+ options.nextId +'"><a href=\"javascript:void(0);\">'+ options.nextText +'</a></span>';
					if(options.lastShow) html += ' <span id="'+ options.lastId +'"><a href=\"javascript:void(0);\">'+ options.lastText +'</a></span>';				
				};
				
				html += options.controlsAfter;						
				$(obj).after(html);
				var scrollbar = $("ol#"+options.numericId);
				var scroller = $("#scroller",$(scrollbar) );
				$(scroller).draggable({ 
					axis: 'x',
					handle : 'img',
					containment: 'parent',
					start : function (e, ui){
						if(timeout){
							clearTimeout(timeout);
							timeout = null;
						}
					}
				});
			};
			
			if(options.numeric){
				//alert($("#canvas").width());
				for(var i=0;i<s;i++){
					ctrl_pnts[i] = $(document.createElement("li"))
						.attr('id',options.numericId + (i+1))
						.attr('class', 'ctrl_pnt')
						.html('<div class="slider_title" style="width: '+ ctrl_w + 'px; height: 22px;display: none; " id="st_'+i+'">'+$(imgs[i]).attr('alt') +'</div><a class="scroll_pnt" style="width: '+ Math.round(ctrl_w) + 'px;margin: 0;padding: 0;" rel='+ i +' href=\"javascript:void(0);\">'+ (i+1) +'</a>')
						.appendTo($(scrollbar))
						.click(function(){							
							animate($("a",$(this)).attr('rel'),true);
							slider_reset();
						})
						.hover(function(me){
							if($("a", me.currentTarget).attr('rel') != t){
								$("div.slider_title", $(me.currentTarget)).fadeTo(options.speed/2,0.5);
							}
						},
						function(me){
							if($("a", me.currentTarget).attr('rel') != t){
								$("div.slider_title", $(me.currentTarget)).fadeOut(options.speed/2);
							}
						}); 												
				};
				$(ctrl_pnts).droppable({
						accept : '#scroller',
						tolerance: 'intersect',
						over: function(e, ui){
							$("div.slider_title", e.target).fadeTo(options.speed/2,0.5);
						},
						out : function(e, ui){
							$("div.slider_title", e.target).fadeOut(options.speed/2);
						},
						drop: function(e, ui){
							animate($("a.scroll_pnt",e.target).attr('rel'), true);
							slider_reset();
						}
					});
				
			} else {
				$("a","#"+options.nextId).click(function(){		
					animate("next",true);
				});
				$("a","#"+options.prevId).click(function(){		
					animate("prev",true);				
				});	
				$("a","#"+options.firstId).click(function(){		
					animate("first",true);
				});				
				$("a","#"+options.lastId).click(function(){		
					animate("last",true);				
				});				
			};
			
			function setCurrent(i){
				i = parseInt(i)+1;
				var crnt = $(ctrl_pnts[i-1]);
				$("div.slider_title", scrollbar).each(
						function(j, el){
							if (j != (i-1)) {
								$(el).fadeOut();
							}
							else{ 
								$(el).fadeIn()
							}
						});
				
			};
			
			function adjust(){
				if(t>ts) t=0;		
				if(t<0) t=ts;	
				if(!options.vertical) {
					$("ul",obj).css("margin-left",(t*w*-1));
				} else {
					$("ul",obj).css("margin-left",(t*h*-1));
				}
				clickable = true;
				if(options.numeric) setCurrent(t);
			};
			
			function animate(dir,clicked){
				if(clicked && timeout) {
					clearTimeout(timeout);
					timeout  = null;
				}
				if (clickable){
					clickable = false;
					var ot = t;		//ot - current , t - selected		
					switch(dir){
						case "next":
							t = (ot >= ts) ? 0 : t+1;						
							break; 
						case "prev":
							t = (t <= 0) ? ts : t-1;
							break; 
						case "first":
							t = 0;
							break; 
						case "last":
							t = ts;
							break; 
						default:
							t = dir;
							break; 
					};	
					var diff = Math.abs(ot-t);
					var lft =0;
					try {lft = $("a.scroll_pnt[rel="+t+"]").position().left;}
					catch(e){};
					if(ot != t){
						$("#st_"+ot, $(ctrl_pnts[ot])).fadeOut(options.speed);
					}
					$("#st_"+t, $(ctrl_pnts[t])).fadeTo(options.speed, 1.0);
					var speed = diff*options.speed;						
					if(!options.vertical) {
						p = (t*w*-1);
						$("ul",obj).animate(
							{ marginLeft: p }, 
							{ queue:true, duration:options.speed }
						);		
						$("#scroller").animate({left: lft},{ queue:true, duration:options.speed, complete:adjust });
					} else {
						p = (t*h*-1);
						$("ul",obj).animate(
							{ marginTop: p }, 
							{ queue:false, duration:speed, complete:adjust }
						);					
					};
					
					if(!options.continuous && options.controlsFade){					
						if(t==ts){
							$("a","#"+options.nextId).hide();
							$("a","#"+options.lastId).hide();
						} else {
							$("a","#"+options.nextId).show();
							$("a","#"+options.lastId).show();					
						};
						if(t==0){
							$("a","#"+options.prevId).hide();
							$("a","#"+options.firstId).hide();
						} else {
							$("a","#"+options.prevId).show();
							$("a","#"+options.firstId).show();
						};					
					};				
					
					if(options.auto && dir == "next" && !clicked){
						if (timeout) {
							clearTimeout(timeout);
							timeout = null;
						}
						timeout = setTimeout(function(){
							animate("next",false);
						},options.speed+options.pause);
					};
			
				};
				
			};
			var timeout = null;;
			function slider_reset(){
				if (timeout) clearTimeout(timeout);
				timeout = setTimeout(function(){
					t = -1;
					animate("next",false);
				},options.delay);
			};
			// init
			if(options.numeric) setCurrent(0);
			slider_reset();
			
		
			if(!options.continuous && options.controlsFade){					
				$("a","#"+options.prevId).hide();
				$("a","#"+options.firstId).hide();				
			};				
			
		});
	  
	};

})(jQuery);