/*
 * 	Easy Slider 1.8 - 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
 *
 */

//
// EDITED BY BENJAM @ CODEGREENE
//

/*
 *	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',
			autoLeft:		true,
			numToShow:		1,
			numToSlide:		1,
			hoverPause:		true,
			windowWidth:	'auto', // in pixels
			itemWidth:		'auto', // in pixels
			startMargin:	0, // in pixels
			startLast:		false
		};

		var options = $.extend(defaults, options);

		this.each(function() {
			var obj = $(this);
			var s = $("li", obj).length; // number of elements

			// i really don't want to do any crazy maths to figure out how many to show and slide and create
			// so if the number showing and the number sliding don't match,
			// or the number of elements doesn't divide evenly into the number sliding (and showing)... slide one
			if ((1 != options.numToSlide) && ((options.numToShow != options.numToSlide) || (0 != s % options.numToSlide))) {
				options.numToSlide = 1;
			}

			if ('auto' == options.itemWidth) {
				var w = $("li", obj).outerWidth(); // width of element
			}
			else {
				var w = options.itemWidth;
			}
			var h = $("li", obj).outerHeight(); // height of element
			var n = options.numToShow;
			var clickable = true;
			if ('auto' == options.windowWidth) {
				obj.width(w * n);
			}
			else {
				obj.width(options.windowWidth);
			}
			obj.height(h);
			obj.css("overflow","hidden");
			var ts = s-1;
			var t = 0;
			if (options.startLast) {
				t = ts;
				$("ul", obj).css('marginLeft', (t * w * -1) + options.startMargin);
			}
			$("ul", obj).css('width', s * w);

			if(options.continuous || 1 < n){
				for (var i = 0; i < n; ++i) {
					$("ul", obj).prepend($("ul li:eq("+(s - 1)+")", obj).clone( ).css("margin-left","-"+(w * (i + 1))+"px"));
				}

				for (var i = 0; i < n; ++i) {
					$("ul", obj).append($("ul li:eq("+(n + i)+")", obj).clone( ));
				}

				$("ul", obj).css('width', w * (s + n));
			};

			if(!options.vertical) $("li", obj).css('float','left');

			if(options.controlsShow){
				var html = options.controlsBefore;
				if(options.numeric){
					html += '<ol id="'+ options.numericId +'"></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.numeric){
				var ns = options.numToSlide;
				for(var i = 0; i < (s / ns); i++){
					$(document.createElement("li"))
						.attr('id', options.numericId+((i * ns) + 1))
						.html('<a rel='+(i * ns)+' href=\"javascript:void(0);\">'+(i + 1)+'</a>')
						.appendTo($("#"+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);
				});
			};

			function setCurrent(i){
				i = parseInt(i) + 1;
				$("li", "#" + options.numericId).removeClass("current");
				$("li#" + options.numericId + i).addClass("current");
			};

			function adjust(){
				if(t>ts) t=0;
				if(t<0) t=ts;
				if(!options.vertical) {
					$("ul",obj).css("margin-left",(t*w*-1) + options.startMargin);
				} else {
					$("ul",obj).css("margin-top",(t*h*-1) + options.startMargin);
				}
				clickable = true;
				if(options.numeric) setCurrent(t);
			};

			if (options.hoverPause) {
				$('#slider').mouseenter( function( ) {
					clearTimeout(timeout);
					animate("stop", true);
				});
				$('#slider').mouseleave( function( ) {
					if (options.auto){
						animate("next", false);
					}
				});
			};

			function animate(dir,clicked){
				if (clickable){
					clickable = false;
					var ot = t;
					switch(dir){
						case "next":
							t = (ot >= ts) ? (options.continuous ? t + options.numToSlide : ts) : t + options.numToSlide;
							break;
						case "prev":
							t = (t <= 0) ? (options.continuous ? t - options.numToSlide : 0) : t - options.numToSlide;
							break;
						case "first":
							t = 0;
							break;
						case "last":
							t = ts;
							break;
						case "stop":
							t = t;
							break;
						default:
							t = parseInt(dir);
							break;
					};
					var diff = Math.abs(ot-t);
					var speed = diff*options.speed;
					if(!options.vertical) {
						p = (t*w*-1) + options.startMargin;
						$("ul",obj).animate(
							{ marginLeft: p },
							{ queue:false, duration:speed, complete:adjust }
						);
					} else {
						p = (t*h*-1) + options.startMargin;
						$("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 && options.autoLeft && dir=="next" && !clicked){
						timeout = setTimeout(function(){
							animate("next",false);
						},diff*options.speed+options.pause);
					} else if(options.auto && !options.autoLeft && dir=="prev" && !clicked){
						timeout = setTimeout(function(){
							animate("prev",false);
						},diff*options.speed+options.pause);
					};

				};

			};
			// init
			var timeout;
			if(options.auto){;
				timeout = setTimeout(function(){
					if (options.autoLeft) {
						animate("next",false);
					} else {
						animate("prev",false);
					};
				},options.pause);
			};

			if(options.numeric) setCurrent(0);

			if(!options.continuous && options.controlsFade){
				$("a","#"+options.prevId).hide();
				$("a","#"+options.firstId).hide();
			};

		});

	};

})(jQuery);