/*
 * 	ActionComV4 0.0 - jQuery plugin
 *	written by Eric REYNIER	
 *	http://cssglobe.com/post/4004/easy-slider-15-the-easiest-jquery-plugin-for-sliding
 *
 *	Copyright (c) 2010 Actioncom (http://www.actioncom.fr)
 *	Dual licensed under the MIT (MIT-LICENSE.txt)
 *	and GPL (GPL-LICENSE.txt) licenses.
 *	Built for jQuery library
 *	http://jquery.com
 */
 
/*
 *	example pour $("#xxx").acv4Slider();
 *	attention : il est indispensable de fixer la dimension width du div principal.
 *	C'est cette dimension qui sera prise en compte pour déterminer la taille du slider
 *	
 * 	<div id="xxx">
 *		<ul> ( ou <ul class="xxx"> => changer classUl: 'ul.xxx'
 *			<li><img src="images/01.jpg" alt="" /></li> ( ou <li class="yyy"> => changer classLi: 'li.yyy'
 *			<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.acv4Slider = function(options){
	  
		// default configuration properties
		var defaults = {
			classUl:'ul',
			classLi:'li',
			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:true,
			pause:2000,
			continuous:true
		}; 
		
		var options = $.extend(defaults, options);  
				
		this.each(function() {
			//	handler vers le div contenant l'ensemble du slider
			var obj=$(this); 	
			//	Obtention des dimension du li
			var nb=$(options.classLi,obj).length;
			var w=obj.width(); 
			var h=obj.height(); 

			obj.width(w); 
			//obj.height(h); 
			obj.css("overflow","hidden");
			var ts=nb-1;
			var t=0;
			$(options.classUl,obj).css('width',nb*w);
			$(options.classUl,obj).css('padding',0);			
			$(options.classUl,obj).css('margin',0);			
			$(options.classUl,obj).css('border','0px');			
			if(!options.vertical) $(options.classLi,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);										
			};
	
			$("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);
					$(options.classUl,obj).animate(
						{ marginLeft: p }, 
						speed
					);				
				} else {
					p = (t*h*-1);
					$(options.classUl,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);