// JavaScript Document
// Requires JQuery
// Based heavily upon the infinite carousel script
// http://jqueryfordesigners.com/jquery-infinite-carousel/


$.fn.flyoutCarousel = function () {

	function repeat(str, num) {
		return new Array( num + 1 ).join( str );
	}

	return this.each(function () {
		var $wrapper = $('> div', this).css('overflow', 'hidden'),
		$slider = $wrapper.find('> ul'),
		$items = $slider.find('> li'),
		$single = $items.filter(':first'),
		singleWidth = $single.outerWidth(), 
		visible = Math.ceil($wrapper.innerWidth() / singleWidth),
		currentPage = 1,
		pages = Math.ceil($items.length / visible);

		// 1. Pad so that 'visible' number will always be seen, otherwise create empty items
		if (($items.length % visible) != 0) {
			$slider.append(repeat('<li class="empty" />', visible - ($items.length % visible)));
			//$items = $slider.find('> li');
		}
	
		// 2. Top and tail the list with 'visible' number of items, top has the last section, and tail has the first
		$items.filter(':first').before($items.slice(- visible).clone().addClass('cloned'));
		$items.filter(':last').after($items.slice(0, visible).clone().addClass('cloned'));
		$items = $slider.find('> li'); // reselect
	
		// 3. Set the left position to the first 'real' item
		$wrapper.scrollLeft(singleWidth * visible);
		

		// 4. paging function
		function gotoPage(page) {
			
			var isHidden = true;
			
			$.each( $items, function() {
				if ( $(this).children('.hidden').is(':visible') ) {
					isHidden = false;
				}
			});

			// DONT ALLOW SCROLLING IF PANEL IS OPEN
			if ( isHidden == true ) {
				
				var dir = page < currentPage ? -1 : 1,
				n = Math.abs(currentPage - page),
				left = singleWidth * dir * visible * n;
		
				$wrapper.filter(':not(:animated)').animate({
					scrollLeft : '+=' + left
					}, 500, function () {
						if (page == 0) {
							$wrapper.scrollLeft(singleWidth * visible * pages);
							page = pages;
						} else if (page > pages) {
							$wrapper.scrollLeft(singleWidth * visible);
							// reset back to start position
							page = 1;
						} 
					currentPage = page;

				});                

			} else {
				$('.wrapper ul li.open div.thumb').click();
			}

		return false;
		}



		$wrapper.after('<a class="arrow back">&lt;</a><a class="arrow forward">&gt;</a>');
	
		// 5. Bind to the forward and back buttons
		$('a.back', this).click(function () {									  
			return gotoPage(currentPage - 1);                
		});
	
		$('a.forward', this).click(function () {
			return gotoPage(currentPage + 1);                
		});
		
		// create a public interface to move to a specific page
		$(this).bind('goto', function (event, page) {
			gotoPage(page);
		});
		
		$('.wrapper .thumb').filter(':not(:animated)').click(function() {
			var $parentElement = $(this).parent();
		
			if ( $($parentElement).children('.hidden').is(':hidden') ) {
				
				// Add Open Class
				$($parentElement).addClass('open');
			
				// Move object to first position based on the index #
				var index = ( ( $($items).index($parentElement) ) - ( visible - 1) );
				if ( currentPage == '1' ) {
					var position = index;
				} else {
					var position = ( index - ( visible * ( currentPage -1 ) ) );
				}
				var position = position -1;
				var offset = ( position * singleWidth );
				
				//$("span").text("Index #" + index + " and the offset is" + offset);
				$wrapper.filter(':not(:animated)').animate({ scrollLeft : '+=' + offset }, 500, 'linear');
				
				// Unhide Children of Clicked Object
				$($parentElement).children('.hidden').show('slow');

				// DISABLE ARROWS
				$('a.arrow').addClass('inactive');

				$('.output').html('index: ' + index + ' - position: ' + position + ' - Offset: ' + offset + ' - Current Page: ' + currentPage);		

			} else {
				
				// Remove Open Class
				$($parentElement).removeClass('open');

				// Move object to first position based on the index #
				var index = ( ( $($items).index($parentElement) ) - ( visible - 1) );
				if ( currentPage == '1' ) {
					var position = index;
				} else {
					var position = ( index - ( visible * ( currentPage -1 ) ) );
				}
				var position = position -1;
				var offset = ( position * singleWidth );

				$($parentElement).removeClass('open');
				$($parentElement).children('.hidden').hide( 200, function() {
					$wrapper.filter(':not(:animated)').animate({ scrollLeft : '-=' + offset }, 500, 'linear' );					
				});

				// ENABLE ARROWS
				$('a.arrow').removeClass('inactive');


//			$('.output').html('index: ' + index + ' - position: ' + position + ' - Offset: ' + offset + ' - Current Page: ' + currentPage);

				
			}
			
			return false;
		});
				
	});  
};

$(document).ready(function () {
	$('.flyoutCarousel').flyoutCarousel();
});