/*
 * jQuery Infinite Carousel
 * @author admin@catchmyfame.com - http://www.catchmyfame.com
 * @version 2.0.2
 * @date June 12, 2010
 * @category jQuery plugin
 * @copyright (c) 2009 admin@catchmyfame.com (www.catchmyfame.com)
 * @license CC Attribution-Share Alike 3.0 - http://creativecommons.org/licenses/by-sa/3.0/
 */

(function($){
	$.fn.extend({ 
		infiniteCarousel: function(options)
		{
			var defaults = 
			{
				elementWidth: 962, 
				elementHeight: 361, 
				transitionSpeed: 800,
				displayTime: 5000,
				textholderHeight: .25,
				displayProgressBar: false,
				displayThumbnails: false,
				customThumbnails: true,
				displayThumbnailNumbers: false,
				displayThumbnailBackground: false,
				thumbnailWidth: '20px',
				thumbnailHeight: '20px',
				thumbnailFontSize: '.7em',
				easeLeft: 'linear',
				easeRight: 'linear',
				imagePath: '/images/layout/carousel/',
				inView: 1,
				padding: '0px',
				advance: 1,
				showControls: true,
				autoHideControls: false,
				autoHideCaptions: false,
				autoStart: false,
				prevNextInternal: true,
				onSlideStart: function(){},
				onSlideEnd: function(){},
				onPauseClick: function(){},
				showCaptions: false
			};
		var options = $.extend(defaults, options);
	
    		return this.each(function() {
    		var randID = Math.round(Math.random()*100000000);
			var o=options;
			var obj = $(this);
			var autopilot = o.autoStart;

			var numElements = $('li', obj).length; // Number of elements

			if(o.inView > numElements-1) o.inView=numElements-1; // check to make sure inview isnt greater than the number of images. inview should be at least two less than numElements (otherwise hinting wont work and animating left may catch a flash), but one less can work
			/*$('p', obj).hide();*/ // Hide any text paragraphs in the carousel
			$(obj).css({'position':'relative'}).width((o.elementWidth*o.inView)+(o.inView*parseInt(o.padding)*2)).height(o.elementHeight+(parseInt(o.padding)*2)); //,'overflow':'hidden'
			$('ul', obj).css({'list-style':'none','margin':'0','padding':'0','position':'relative'}).width(o.elementWidth*numElements);
			$('li', obj).css({'display':'inline','float':'left','padding':o.padding});

			// Move rightmost image over to the left
			$('li:last', obj).prependTo($('ul', obj));
			$('ul', obj).css('left',-o.elementWidth-(parseInt(o.padding)*2)+'px').width(9999);

			
			if(o.showControls)
			{
				
				arrowsTop = ((o.elementHeight/2)-15)+parseInt(o.padding);
				html = '<div id="btn_rt'+randID+'" style="position:absolute;left:-51px;z-index:400;cursor:pointer;border:none;width:102px;height:51px;background:url('+o.imagePath+'next.png) no-repeat 0 0"></div>';
				(o.prevNextInternal) ? $('#carousel-next').append(html):$('#'+wrapID).append(html);
				
				html = '<div id="btn_lt'+randID+'" style="position:absolute;z-index:400;cursor:pointer;border:none;width:102px;height:51px;background:url('+o.imagePath+'previous.png) no-repeat 0 0"></div>';
				(o.prevNextInternal) ? $('#carousel-prev').append(html):$('#'+wrapID).append(html);

				$('#btn_rt'+randID).click(function(){
					forcePrevNext('next');
				}).hover(function(){$(this).animate({left:0},250)},function(){$(this).animate({left:-51},250)});
				
				$('#btn_lt'+randID).click(function(){
					forcePrevNext('prev');
				}).hover(function(){$(this).animate({left:-51},250)},function(){$(this).animate({left:0},250)});
				
			}
			
			
			if(o.customThumbnails)
			{
				function thumbclick(event)
				{
					target_num = this.id.split('_'); // we want target_num[1]
					
					if(viewable[0] != target_num[1])
					{
						status='pause';
						clearTimeout(clearInt);
						autopilot = 0;
						
						// Unbind the thumbnail click event until the transition has ended
						$('#carousel-thumbs div.thumb').css({'cursor':'default'}).unbind('click'); 
					}
					
					if(target_num[1] > viewable[0])
					{
						diff = target_num[1] - viewable[0];
						moveLeft(diff);
					}
					if(target_num[1] < viewable[0])
					{
						diff = viewable[0]- target_num[1];
						moveRight(diff);
					}
				}

				var viewable = []; // track which images are being displayed
				var unviewable = []; // track which images are being displayed
				
				for(i=0;i<=numElements-1;i++)
				{
					if(i<=o.inView) $('#thumb_' + i).css({'background-color':'#574429','color':'#fff'});
					unviewable.push(i+1);
				}
				// Initialize viewable/unviewable arrays
				for(i=1;i<=o.inView;i++) viewable.push(unviewable.shift());

				/*$('#carousel-thumbs div.thumb').hover(function(){$(this).animate({'opacity':1},150)},function(){if(viewable[0]!=this.id.split('_')[1]) $(this).animate({'opacity':.65},250)});*/ // add hover to thumbs
				// Assign click handler for the thumbnails. Normally the format $('.thumb') would work but since it's outside of our object (obj) it would get called multiple times
				$('#carousel-thumbs div.thumb').bind('click', thumbclick); // We use bind instead of just plain click so that we can repeatedly remove and reattach the handler
				
			}
			
			function forcePrevNext(dir)
			{
				o.onPauseClick.call(this);
				$('#btn_rt'+randID).unbind('click');
				$('#btn_lt'+randID).unbind('click');
				setTimeout(function(){$('#play_pause_btn'+randID).css('background-position','0 -16px')},o.transitionSpeed-1);
				autopilot = 0;
				$('#progress'+randID).stop().fadeOut();
				status='pause';
				clearTimeout(clearInt);
				(dir=='prev') ? moveRight():moveLeft();
				$('#play_pause_btn'+randID).unbind('click');
				setTimeout(function(){
						$('#play_pause_btn'+randID).bind('click',function(){forceStart();});
						$('#btn_rt'+randID).bind('click',function(){forcePrevNext('next')});
						$('#btn_lt'+randID).bind('click',function(){forcePrevNext('prev')});
					},o.transitionSpeed);
			}


			function preMove()
			{
				
				// Fade out play/pause/left/right
				if(o.showControls && o.prevNextInternal)
				{
					$('#play_pause_btn'+randID).fadeOut(200);
				}
				if(o.customThumbnails) for(i=1;i<=numElements;i++) $('#thumb_'+i).css({'background-color':'#e0e27c','color':'#574426'});
			}

			function postMove()
			{
				if(o.showControls && o.prevNextInternal)
				{
					$('#play_pause_btn'+randID).fadeIn(200);
				}
				
				
				if(o.customThumbnails) for(i=0;i<viewable.length;i++) $('#thumb_'+viewable[i]).css({'background-color':'#574429','color':'#fff'});
				if(o.customThumbnails) $('#carousel-thumbs div.thumb').unbind('click').bind('click', thumbclick).css({'cursor':'pointer'});
				
			}

			function moveLeft(dist)
			{
				if(dist==null) dist=o.advance;
				preMove();
				
				if(o.customThumbnails)
				{
					for(i=1;i<=dist;i++){
						viewable.push(unviewable.shift());
						unviewable.push(viewable.shift());
					}
				}
				
				
				if(o.displayTime == 0){clearInterval(clearInt);} // If running a contonuous show with no display time, fist clear the interval. Then below, recursively call moveLeft
				$('li:lt('+dist+')', obj).clone(true).insertAfter($('li:last', obj)); // Copy the first image (offscreen to the left) to the end of the list (offscreen to the right)
				o.onSlideStart.call(this,viewable,'left');
				$('ul', obj).animate({left:-o.elementWidth*(dist+1)-(parseInt(o.padding)*(dist+1))*2},o.transitionSpeed,o.easeLeft,function(){ // Animate the entire list to the left
					$('li:lt('+dist+')', obj).remove(); // When the animation finishes, remove the first image (on the left). It has already been copied to the end of the list (right)
					$(this).css({'left':-o.elementWidth-parseInt(o.padding)*2});
					if(o.displayProgressBar && autopilot) startProgressBar();
					postMove();
					if(o.displayTime == 0){moveLeft();}
				});
			}
			function moveRight(dist)
			{
				if(dist==null) dist=o.advance;
				preMove();
				
				if(o.customThumbnails)
				{
					for(i=1;i<=dist;i++){
						viewable.unshift(unviewable.pop());
						unviewable.unshift(viewable.pop());
					}
				}
				
				$('li:gt('+(numElements-(dist+1))+')', obj).clone(true).insertBefore($('li:first', obj)); // Copy rightmost (last) li and insert it after the first li
				o.onSlideStart.call(this,viewable,'right');
				$('ul', obj).css('left',-(o.elementWidth*(dist+1))-(parseInt(o.padding)*((dist+1)*2)))
					.animate({left:-o.elementWidth-(parseInt(o.padding)*2)},o.transitionSpeed,o.easeRight,function(){
						$('li:gt('+(numElements-1)+')', obj).remove();
						postMove();
					});
			}

			// Kickoff the show
			if(autopilot)
			{
				var clearInt = setInterval(function(){moveLeft();},o.displayTime+o.transitionSpeed);
				if(o.displayProgressBar) startProgressBar(o.displayTime+o.transitionSpeed);
			} else {status='pause';$('#play_pause_btn'+randID).css({'background-position':'0 -16px'});}
 		});
	}
	});
})(jQuery);