/**

 * Contains the functionality for the accordion slider.

 * 

 * @author Pexeto

 * http://pexeto.com

 */





(function($){

	$.fn.accordionSlider=function(options){

		var defaults={

			imageWidth:700,

			holderWidth:950

		};

		

		options=$.extend(defaults, options);

		var api, timer=-1, holders=[], current, root, inAnimation=false, descBox, descBottom=2, currentImage=-1, smallWidth=0, holderNumber=0,

		inHover=false;

		

		

		root=$(this);

		thumbContainer=$('#'+options.thumbContainerId);

		current=root.find('img:first').toggleClass('current').show();

		

		init();

		

		/**

		 * Inits the slider.

		 */

		function init(){

			getHolders();

			holderNumber=holders.length;

			smallWidth=(options.holderWidth-options.imageWidth)/(holderNumber-1);

			positionHolders();

			setEventHandlers();

		}

		

		/**

		 * Inserts the bigger holders into an array for further use.

		 */

		function getHolders(){

			root.find('.accordion-holder').each(function(i){

				var holder=$(this).append('<div class="accordion-shadow" />'),

				description=holder.find('.accordion-description:first').css({opacity:0.8});

				holders.push({obj:holder, description:description});

			});

		}

		

		/**

		 * Positions the holders in an accordion layout.

		 */

		function positionHolders(){

			var width=options.holderWidth/holderNumber,

				leftPosition=0,

				descriptionDiv,

				current;

		

			for(var i=0; i<holderNumber; i++){

				leftPosition=i*width;

				current=holders[i];

								

				current.obj.css({left:leftPosition, visibility:'visible', zIndex:i*10});

			}

		}

		

		/**

		 * Sets the mouse event handlers to the images.

		 */

		function setEventHandlers(){

			var holder;

			

			//set the hover handler for each of the images

			for(var i=0; i<holderNumber; i++) (function(i){

				holder=holders[i].obj;

				holder.mouseover(function(){

					inHover=true;

					$(this).css({cursor:'pointer'});

					window.setTimeout(function(){

						if(inHover){

							showSelected(i);

						}

					}, 100);

				});

			})(i);

			

			//set the mouseleave event handler to the root - when the mouse leaves the root, 

			//position the images to the default state

			root.mouseleave(function(){

				inHover=false;

				window.setTimeout(function(){

					if(!inHover){

						setInitialPosition();

					}

				}, 150);

			});

			

		}

		

		/**

		 * Shows the selected (hovered image).

		 */

		function showSelected(index){

			var selected=holders[index].obj,

				leftPosition=0;

			

			if(currentImage!=-1){

				holders[currentImage].obj.css({zIndex:currentImage*10});

			}

			

			

			//calculate the left position of the selected image

			selectedLeft=smallWidth*index;

			

			for(var i=0; i<holderNumber; i++){

				if(i===index){

					//the holder is the selected one

					leftPosition=smallWidth*i;

					holders[i].obj.stop().animate({left:leftPosition}, 500,function(i){

					$(this).find('.accordion-description:first').fadeIn();

				}

							);

				}else if(i<index){

					//the holder to move is a holder before the selected one

					leftPosition=smallWidth*i;

					holders[i].obj.stop().animate({left:leftPosition}, 500, function(i){

					$(this).find('.accordion-description:first').hide();

				});

				}else{

					//the holder to move is positioned after the selected one

					leftPosition=smallWidth*(i-1)+options.imageWidth;

					holders[i].obj.stop().animate({left:leftPosition}, 500, function(i){

					$(this).find('.accordion-description:first').hide();

				});

				}

			}

			

			selected.animate(selectedLeft);

			

			currentImage=index;

		}

		

		/**

		 * Animates the images to their initial position.

		 */

		function setInitialPosition(){

			var width=options.holderWidth/holderNumber,

			leftPosition=0;

			

	

			for(var i=0; i<holderNumber; i++){

				leftPosition=i*width;

				holders[i].obj.stop().animate({left:leftPosition}, function(i){

					$(this).find('.accordion-description:first').hide();

				});

			}

		}

	};

}(jQuery));