/*
 * 	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
 *
 */
 
$jq = jQuery.noConflict();


(function($) {

	$.fn.easySlider = function(options){
	  
		// default configuration properties
		var defaults = {			
			prevId: 		'prevBtn',
			prevText: 		'',
			nextId: 		'nextBtn',	
			nextText: 		'',
			controlsShow:	true,
			controlsBefore:	'',
			controlsAfter:	'',
                        // Modification non optimisée : possibilité d'encadrer les boutons avec du HTML pour des comportements sur les bouton Prev et Next'
                        ajax: false,
                        noPreAppend : false,
                        // Fin modif
			controlsFade:	true,
			firstId: 		'firstBtn',
			firstText: 		'First',
			firstShow:		false,
			lastId: 		'lastBtn',	
			lastText: 		'Last',
			lastShow:		false,				
			vertical:		false,
			speed: 			800,
			auto:			false,
			pause:			5000,
			continuous:		false, 
			numeric: 		false,
			numericId: 		'controls',
//modif alice : variable nombremax pour nombre maximum d'images/de li qui s'affichent dans le slider
			nombremax:		1,
			// pour automatiser la largeur et le positionnement des petits carr�s
			ol_width:		817,
			li_width:		21,
			hover : false
		}; 
		
		var options = $.extend(defaults, options);  
				
		this.each(function() {  
			var obj = $(this); 				
			var s = $("li", obj).length;
			var w = $("li", obj).width(); 
			var h = $("li", obj).height(); 
			var clickable = true;
			obj.width(w); 
			obj.height(h); 
			obj.css("overflow","hidden");
			var ts = s-1;
			var t = 0;
			$("ul", obj).css('width',s*w);			
			
			if(options.continuous && !options.noPreAppend){
				$("ul", obj).prepend($("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');
								
			if(options.controlsShow){
				var html = options.controlsBefore;				
				if(options.numeric){
					html += '<ol id="'+ options.numericId +'" style="margin-left: '+(options.ol_width-(options.li_width*s))+'px;"></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);										
			};

				if(options.hover == false) {
			if(options.numeric){									
				for(var i=0;i<s;i++){						
					$(document.createElement("li"))
						.attr('id',options.numericId + (i+1))
						.html('<a rel='+ i +' href=\"javascript:void(0);\"></a>')
						.appendTo($("#"+ options.numericId))
						.click(function(){							
							animate($("a",$(this)).attr('rel'),true);
						}); 												
				};							
			} 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);				
				});				
			};
			} else {
				if(options.numeric){									
				for(var i=0;i<s;i++){						
					$(document.createElement("li"))
						.attr('id',options.numericId + (i+1))
						.html('<a rel='+ i +' href=\"javascript:void(0);\"></a>')
						.appendTo($("#"+ options.numericId))
						.hover(function(){							
							animate($("a",$(this)).attr('rel'),true);
						}); 												
				};							
			} else {
				$("a","#"+options.nextId).mouseover(function(){	
					animate("next",false);
				});
				
				$("a","#"+options.prevId).mouseover(function(){		
					animate("prev",true);				
				});	
				$("a","#"+options.firstId).mouseover(function(){		
					animate("first",true);
				});				
				$("a","#"+options.lastId).mouseover(function(){		
					animate("last",true);				
				});				
			};
			}
			
			function setCurrent(i){
				i = parseInt(i)+1;
				$("li", "#" + options.numericId).removeClass("current");
				$("li#" + options.numericId + i).addClass("current");
			};
			
			function adjust(){
				if(t>ts && !options.noPreAppend) t=0;		
				if(t<0 && !options.noPreAppend) 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 (clickable){
					clickable = false;
					var ot = t;				
					switch(dir){
						case "next":
							t = (ot>=ts && options.noPreAppend == false) ? (options.continuous ? t+1 : ts) : t+1;
                                                        if(options.ajax) loadPanel.next(); 
							break; 
						case "prev":
							t = (t<=0 && options.noPreAppend == false) ? (options.continuous ? t-1 : 0) : t-1;
                                                        if(options.ajax) loadPanel.prev(); 
							break; 
						case "first":
							t = 0;
							break; 
						case "last":
							t = ts;
							break; 
						default:
							t = dir;
							break; 
					};	
					var diff = Math.abs(ot-t);
					var speed = diff*options.speed;						
					if(!options.vertical) {
						p = (t*w*-1);
						$("ul",obj).animate(
							{marginLeft: p}, 
							{queue:false, duration:speed, complete:adjust}
						);				
					} else {
						p = (t*h*-1);
						$("ul",obj).animate(
							{marginTop: p}, 
							{queue:false, duration:speed, complete:adjust}
						);					
					};
					
					
					if(!options.continuous && options.controlsFade){	
//modif alice pour non-affichage du bouton suivant si on arrive � la derni�re image/au dernier li (anciennement (t=ts))
						if(t >= s-options.nombremax){
							$("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.numeric) setCurrent(0);
		
			if(!options.continuous && options.controlsFade){					
				$("a","#"+options.prevId).hide();
				$("a","#"+options.firstId).hide();	
//modif alice pour non-affichage du bouton precedent si nombre d'images/li est inf�rieur au nombre d'images/li qui s'affichent dans le slider
				if(s <= options.nombremax){
					$("a","#"+options.nextId).hide();
					$("a","#"+options.lastId).hide();
				};
				
			};				
			
			
		});
	  
	};

})(jQuery);