/*
 *  Wizzard Bulgaria
 *  www.wizzard.bg
 *  office@wizzard.bg
 *  
 *  Wizzard Slider 1.0
 *  
 *  BASED ON easySlider1.5
 *  ////
 *  Easy Slider 1.5 - 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
 */

(function($) {

	$.fn.wizzardSlider = 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               : 			800,
		    auto                :			false,
		    pause               :			2000,
			continuous          :		    false,
            visibleItems        :           1,
            marginLeftRight     :           0,
            marginTopBottom     :           0,
			addWidth            :           0,
			addUlwidth			:			0
		}; 
		
		var options = $.extend(defaults, options);  
				
		this.each(function() {  
			var obj = $(this); 				
			var s = $("li", obj).length;
			var w = $("li", obj).width() + (2 * options.marginLeftRight) + options.addWidth;
			var h = $("li", obj).height() + options.marginTopBottom; 
			
			obj.width(w * options.visibleItems); 
			obj.height(h); 
			obj.css("overflow","hidden");
            $("li", obj).css('margin', options.marginTopBottom + 'px ' + options.marginLeftRight + 'px')
			var ts = s - (options.visibleItems);
			var t = 0;
			$("ul", obj).css('width',s*w + options.addUlwidth);
            		
			if(!options.vertical) $("li", obj).css('float','left');
			
			if(options.controlsShow){
				var html = options.controlsBefore;
				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);										
			};
			if(ts<=0)
			     $("a","#"+options.nextId).hide();
	
			$("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 animate(dir,clicked){
				var ot = t;				
				switch(dir){
					case "next":
						t = (ot>=ts) ? (options.continuous ? 0 : ts) : t+1;						
						break; 
					case "prev":
						t = (t<=0) ? (options.continuous ? ts : 0) : t-1;
						break; 
					case "first":
						t = 0;
						break; 
					case "last":
						t = ts;
						break; 
					default:
						break; 
				};	
				
				var diff = Math.abs(ot-t);
				var speed = diff*options.speed;						
				if(!options.vertical) {
					p = (t*w*-1);
					$("ul",obj).animate(
						{ marginLeft: p }, 
						speed
					);				
				} else {
					p = (t*h*-1);
					$("ul",obj).animate(
						{ marginTop: p }, 
						speed
					);					
				};
				
				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(clicked) clearTimeout(timeout);
				if(options.auto && dir=="next" && !clicked){;
					timeout = setTimeout(function(){
						animate("next",false);
					},diff*options.speed+options.pause);
				};
				
			};
			// init
			var timeout;
			if(options.auto){;
				timeout = setTimeout(function(){
					animate("next",false);
				},options.pause);
			};		
		
			if(!options.continuous && options.controlsFade){					
				$("a","#"+options.prevId).hide();
				$("a","#"+options.firstId).hide();				
			};				
			
		});
	  
	};

})(jQuery);