/*
 * 	Easy Slider - jQuery plugin
 *	written by Alen Grakalic	
 *	http://cssglobe.com/post/3783/jquery-plugin-easy-image-or-content-slider
 *
 *	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 $("#images").easySlider();
 *	
 * 	<div id="images">
 *		<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 = {
			pagerId:		'pager',
			prevId: 		'prevBtn',
			prevText: 		'Previous',
			nextId: 		'nextBtn',	
			nextText: 		'Next',			
			orientation:	'', //  'vertical' is optional;
			speed: 			800,
			startSlider:	false,
			slideSpeed:		2000,
			sliderBoth:		false,
			guideId:		'dots',
			showGuide:		true
		}; 
		
		var options = $.extend(defaults, options);  
		
		return this.each(function() {  
			obj = $(this);
			var ti;
			var sf = true;			
			var s = $("li", obj).length;
			var w = obj.width(); 
			var h = obj.height(); 
			var ts = s-1;
			var t = 0;
			var vertical = (options.orientation == 'vertical');
			$("ul", obj).css('width',s*w);			
			if(!vertical) $("li", obj).css('float','left');
			$("li")
				.mouseenter(function(){
					clearTimeout(ti);
					sf = false;
				})
				.mouseleave(function(){
					clearTimeout(ti);
					sf = options.startSlider;
					if(sf){						
						slide();
					}
				});
			$(obj).after('<div id="' + options.pagerId + '"><span id="'+ options.prevId +'"><a href=\"javascript:void(0);\">'+ options.prevText +'</a></span> <span id="'+ options.nextId +'"><a href=\"javascript:void(0);\">'+ options.nextText +'</a></span> </div><div style="clear:both;">&nbsp;</div>');		
			var g = $(obj).after('<div id="' + options.guideId + '"><ul></ul></dots>');
			$('#'+options.guideId).hide();
			if(options.showGuide){
				for(var ctr = 0; ctr < s; ctr++){
				$('#'+options.guideId+' ul').append($('<li class="guide" id="' + options.guideId + '_' + ctr + '">&nbsp;</li>')
										.click(function(){
											dad();
											$(this).addClass('active');
											var arr = $(this).attr('id').split('_');											
											animateS(arr[arr.length-1]);											
										})										
									);
				}
				$('#' + options.guideId + ' ul li').eq(0).addClass('active');
				$('#'+options.guideId).show();
			}
			
			$("a","#"+options.prevId).hide();
			$("a","#"+options.nextId).hide();
			$("a","#"+options.nextId).click(function(){		
				animate("next");
				if (t>=ts) $(this).fadeOut();
				$("a","#"+options.prevId).fadeIn();
			});
			$("a","#"+options.prevId).click(function(){		
				animate("prev");
				if (t<=0)$(this).fadeOut();				
				$("a","#"+options.nextId).fadeIn();
			});
			var dad = function(){
				for(var c=0; c<s; c++){
					$('#'+options.guideId+'_'+c).removeClass('active');
				}
			}
			function animateS(it){
				t=it-1;
				if(options.startSlider){
					slide();
				}else{
					$("a","#"+options.nextId).trigger('click');	
				}
			};
			function animate(dir){							
				if(dir == "next"){
					t = (t>=ts) ? ts : t+1;	
				} else {
					t = (t<=0) ? 0 : t-1;
				};
				//remove all classes
				dad();				
				if (dir == "first") {
					$('#' + options.guideId + '_0').addClass('active');
					goToFirstSlide();
					//Still need to add code for vertical	
				}else {
					$('#' + options.guideId + '_' + t).addClass('active');
					if (!vertical) {
						p = (t * w * -1);
						$("ul", obj).animate({
							marginLeft: p
						}, options.speed);
					}
					else {
						p = (t * h * -1);
						$("ul", obj).animate({
							marginTop: p
						}, options.speed);
					}
				}				
			};
			var slideToFirst = function(){
				animate('first');
			}
			var goToFirstSlide = function(){
				if (!vertical) {
					$("ul", obj).animate({
						marginLeft: 0
					}, (options.speed * s) / 2, function(){
						resetSlider();
					});
				}else{
					$("ul", obj).animate({
						marginTop: 0
					}, (options.speed * s) / 2, function(){
						resetSlider();
					});
				}				
			}
			var resetSlider = function(){
				t = 0;
				$("a","#"+options.prevId).fadeOut();
				$("a","#"+options.nextId).fadeIn();
				if(options.startSlider){
					clearTimeout(ti);
					ti = setTimeout(function(){slide();},options.slideSpeed);
				}
			}
			var slide = function(){
				if(sf){
					clearTimeout(ti);
					$("a","#"+options.nextId).trigger('click');
					if(t+1 < s){					
						ti = setTimeout(function(){slide();},options.slideSpeed);	
					}else{
						ti = setTimeout(function(){slideToFirst();},options.slideSpeed);						
					}
				}
			};
			if(s>1) $("a","#"+options.nextId).fadeIn();
			if(options.startSlider){
				sf = true;
				if(!options.sliderBoth){
					$('#' + options.pagerId).hide();	
				}
			}else{
				sf = false;
			}
			clearTimeout(ti);
			ti = setTimeout(function(){slide();},options.slideSpeed);
		});
	};

})(jQuery);