/*
 * 	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: 			800,
			auto:			false,
			pause:			2000,
			continuous:		false, 
			numeric: 		false,
			numericId: 		'controls'
		}; 
		
		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;
			$("#slider 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');
							
			// ====================================
			// = Edited to Allow Multi-Navigation =
			// ====================================
								
			if(options.controlsShow){
			var html = options.controlsBefore;
			if(options.numeric){
			html += '<ol id="'+ options.numericId +'"></ol>';
			if(options.firstShow) html += '<span id="'+ options.firstId +'"><a href=\"javascript:void(0);\">'+ options.firstText +'</a></span>';
			html += ' <div id="arrows"><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></div>';
			if(options.lastShow) html += ' <span id="'+ options.lastId +'"><a href=\"javascript:void(0);\">'+ options.lastText +'</a></span>';
			} 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>';
			};
			
			// ============
			// = End Edit =
			// ============

			html += options.controlsAfter;
			$(obj).after(html);
			};
			
			// ====================================
			// = Edited to Allow Multi-Navigation =
			// ====================================
			
			if(options.numeric){
			for(var i=0;i<s;i++){
			$(document.createElement("li"))
			.attr('id',options.numericId + (i+1))
			.html('<a rel='+ i +' href=\"javascript:void(0);\">'+ (i+1) +'</a>')
			.appendTo($("#"+ options.numericId))
			.click(function(){
			animate($("a",$(this)).attr('rel'),true);
			});
			};
			$("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 {
			$("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);
			});
			};
			
			// ============
			// = End Edit =
			// ============
						
			function setCurrent(i){
				i = parseInt(i)+1;
				$("li", "#" + options.numericId).removeClass("current");
				$("li#" + options.numericId + i).addClass("current");
				
				//Makes slideID variable accessible outside of this function
				slideID = i;

				// ===========================================================================================
				// = Checks if Info Desc Text is Visible or Hidden on load, and Updates Info Btn Accordingly =
				// ===========================================================================================
				
				if ( $('#desc-' + slideID).is(':hidden') ) { //If Hidden
					$('#infoBtn').text('Info'); //Change text to Info
					
				} else if ( $('#desc-' + slideID).is(':visible') ) { //If Visible
					$('#infoBtn').text('Close Info'); //Change text to Close Info
				}
				
				// =============
				// = End Check =
				// =============
				
				return slideID; //Return variable for other functions
			};
			
			// ====================
			// = Get Info Feature =
			// ====================
			
			//Hide Slide Descriptions
			$('#slider .desc').hide();
			
			//Generate IDs for every image in WordPress loop in format of desc-1, desc-2 etc...
			$("#slider .desc").each( function(i) {
			  $(this).attr('id', "desc-" + i);
			} );
			
			//Adds fadeToggle Ability
			jQuery.fn.fadeToggle = function(speed, easing, callback) {
				return this.animate({opacity: 'toggle'}, speed, easing, callback);
			};
						
			//Toggle Display of Artwork Description & Stops Auto-Play
			$('#infoBtn').click( function(){	
				animate('stop', true);			
				$('#desc-' + slideID).fadeToggle();
				
				// ===========================================
				// = Toggles Info States (Info / Close Info) =
				// ===========================================
				
				$(this).text( $(this).text() == 'Info' ? 'Close Info' : 'Info' );
															
			} );
			
			//Stops Auto-Play when #slider is Clicked (an image is clicked)
			$('#slider').click( function(){
				animate('stop', true);
			} );
						
			// =======
			// = End =
			// =======
			
			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);
			};
			
			// ====================================
			// = Edited to Allow Multi-Navigation =
			// ====================================
			
			function animate(dir,clicked){
			if (clickable){
			clickable = false;
			var ot = t;
			t = parseInt(t);
			switch(dir){
			case "next":
			t = (ot>=ts) ? (options.continuous ? t+1 : ts) : t+1;
			break;
			case "prev":
			t = (t<=0) ? (options.continuous ? t-1 : 0) : t-1;
			break;
			case "first":
			t = 0;
			break;
			case "last":
			t = ts;
			break;
			
			// ========================
			// = Enables Stop Feature =
			// ========================
			
			case 'stop':
			t = t;
			break;
			
			//End Add Stop Feature
			
			default:
			t = dir;
			break;
			};
			
			// ============
			// = End Edit =
			// ============
				
					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){					
						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.numeric) setCurrent(0);
		
			if(!options.continuous && options.controlsFade){					
				$("a","#"+options.prevId).hide();
				$("a","#"+options.firstId).hide();				
			};				
			
		});
	  
	};

})(jQuery);