/* ------------------------------------------------------------------------
	Class: prettyPhoto
	Use: Lightbox clone for jQuery
	Author: Stephane Caron (http://www.no-margin-for-errors.com)
	Version: 2.2.7
------------------------------------------------------------------------- */

var $pp_pic_holder;
var $ppt;

(function($) {
	$.fn.prettyPhoto = function(settings) {
		// global Variables
		var doresize = true;
		var imagesArray = [];
		var setPosition = 0; /* Position in the set */
	
		// Global elements
		var $caller;
		
		var $scrollPos = _getScroll();
	
		$(window).scroll(function(){ _centerPicture(); $scrollPos = _getScroll(); });
		$(window).resize(function(){ _centerPicture(); _resizeOverlay(); });
		$(document).keyup(function(e){
			switch(e.keyCode){
				case 37:
					if (setPosition == 1) return;
					changePicture('previous');
					break;
				case 39:
					if (setPosition == setCount) return;
					changePicture('next');
					break;
				case 27:
					close();
					break;
			};
	    });
 
	
		settings = jQuery.extend({
			animationSpeed: 'normal', /* fast/slow/normal */
			padding: 40, /* padding for each side of the picture */
			opacity: 0.35, /* Value between 0 and 1 */
			showTitle: true, /* true/false */
			allowresize: true, /* true/false */
			counter_separator_label: '/', /* The separator for the gallery counter 1 "of" 2 */
			theme: 'light_rounded' /* light_rounded / dark_rounded / light_square / dark_square */
		}, settings);
	
		$(this).each(function(){
			var hasTitle = false;
			var isSet = false;
			var setCount = 0; /* Total images in the set */
			var arrayPosition = 0; /* Total position in the array */
			
			imagesArray[imagesArray.length] = this;
			$(this).bind('click',function(){
				open(this);
				return false;
			});
		});
	
		function open(el) {
			$caller = $(el);
		
			// Find out if the picture is part of a set
			theRel = $caller.attr('rel');
			galleryRegExp = /\[(?:.*)\]/;
			theGallery = galleryRegExp.exec(theRel);
		
			// Calculate the number of items in the set, and the position of the clicked picture.
			isSet = false;
			setCount = 0;
			for (i = 0; i < imagesArray.length; i++){
				if($(imagesArray[i]).attr('rel').indexOf(theGallery) != -1){
					setCount++;
					if(setCount > 1) isSet = true;

					if($(imagesArray[i]).attr('href') == $caller.attr('href')){
						setPosition = setCount;
						arrayPosition = i;
					};
				};
			};
		
			_buildOverlay();

			// Display the current position
			$pp_pic_holder.find('p.currentTextHolder').text(setPosition + settings.counter_separator_label + setCount);

			// Position the picture in the center of the viewing area
			_centerPicture();
		
			$('#pp_full_res').hide();
			$pp_pic_holder.find('.pp_loaderIcon').show();
		};
	
		showimage = function(width,height,containerWidth,containerHeight,contentHeight,contentWidth,resized){
			$('.pp_loaderIcon').hide();

			if($.browser.opera) {
				windowHeight = window.innerHeight;
				windowWidth = window.innerWidth;
			}else{
				windowHeight = $(window).height();
				windowWidth = $(window).width();
			};

			$pp_pic_holder.find('.pp_content').animate({'height':contentHeight,'width':containerWidth},settings.animationSpeed);

			projectedTop = $scrollPos['scrollTop'] + ((windowHeight/2) - (containerHeight/2));
			if(projectedTop < 0) projectedTop = 0 + $('div.ppt').height();

			// Resize the holder
			$pp_pic_holder.animate({
				'top': projectedTop,
				'left': ((windowWidth/2) - (containerWidth/2)),
				'width': containerWidth
			},settings.animationSpeed,function(){
				$pp_pic_holder.width(containerWidth);
				$pp_pic_holder.find('.pp_hoverContainer,#fullResImage').height(height).width(width);

				// Fade the new image
				$pp_pic_holder.find('#pp_full_res').fadeIn(settings.animationSpeed);

				// Show the nav elements
				_shownav($pp_pic_holder,$ppt);
			
				// Fade the resizing link if the image is resized
				if(resized) $('a.pp_expand,a.pp_contract').fadeIn(settings.animationSpeed);
			});
		};
	
		function changePicture(direction){
			if(direction == 'previous') {
				arrayPosition--;
				setPosition--;
			}else{
				arrayPosition++;
				setPosition++;
			};

			// Allow the resizing of the images
			if(!doresize) doresize = true;

			// Fade out the current picture
			$pp_pic_holder.find('.pp_hoverContainer,.pp_details').fadeOut(settings.animationSpeed);
			$pp_pic_holder.find('#pp_full_res').fadeOut(settings.animationSpeed,function(){
				$('.pp_loaderIcon').show();
			
				// Preload the image
				_preload();
			});

			_hideTitle();
			$('a.pp_expand,a.pp_contract').fadeOut(settings.animationSpeed,function(){
				$(this).removeClass('pp_contract').addClass('pp_expand');
			});
		};
	
		function close(){
			$('div.pp_pic_holder,div.ppt').fadeOut(settings.animationSpeed, function(){
				$('div.pp_overlay').fadeOut(settings.animationSpeed, function(){
					$('div.pp_overlay,div.pp_pic_holder,div.ppt').remove();
				
					// To fix the bug with IE select boxes
					if($.browser.msie && $.browser.version == 6){
						$('select').css('visibility','visible');
					};
				});
			});
			
			doresize = true;
		};
	
		function _checkPosition(){
			// If at the end, hide the next link
			if(setPosition == setCount) {
				$pp_pic_holder.find('a.pp_next').css('visibility','hidden');
				$pp_pic_holder.find('a.pp_arrow_next').addClass('disabled').unbind('click');
			}else{ 
				$pp_pic_holder.find('a.pp_next').css('visibility','visible');
				$pp_pic_holder.find('a.pp_arrow_next.disabled').removeClass('disabled').bind('click',function(){
					changePicture('next');
					return false;
				});
			};
		
			// If at the beginning, hide the previous link
			if(setPosition == 1) {
				$pp_pic_holder.find('a.pp_previous').css('visibility','hidden');
				$pp_pic_holder.find('a.pp_arrow_previous').addClass('disabled').unbind('click');
			}else{
				$pp_pic_holder.find('a.pp_previous').css('visibility','visible');
				$pp_pic_holder.find('a.pp_arrow_previous.disabled').removeClass('disabled').bind('click',function(){
					changePicture('previous');
					return false;
				});
			};
		
			// Change the current picture text
			$pp_pic_holder.find('p.currentTextHolder').text(setPosition + settings.counter_separator_label + setCount);
		
			$caller = (isSet) ? $(imagesArray[arrayPosition]) : $caller;

			if($caller.attr('title')){
				$pp_pic_holder.find('.pp_description').show().html(unescape($caller.attr('title')));
			}else{
				$pp_pic_holder.find('.pp_description').hide().text('');
			};
		
			if($caller.find('img').attr('alt') && settings.showTitle){
				hasTitle = true;
				$ppt.find('.ppt_content').html(unescape($caller.find('img').attr('alt')));
			}else{
				hasTitle = false;
			};
		};
	
		function _fitToViewport(width,height){
			hasBeenResized = false;
		
			$('div.pp_pic_holder .pp_details').width(width); /* To have the correct height */
			$('div.pp_pic_holder .pp_details p.pp_description').width(width - parseFloat($('div.pp_pic_holder a.pp_close').css('width'))); /* So it doesn't overlap the button */
		
			// Get the container size, to resize the holder to the right dimensions
			contentHeight = height + parseFloat($('div.pp_pic_holder .pp_details').height()) + parseFloat($('div.pp_pic_holder .pp_details').css('margin-top')) + parseFloat($('div.pp_pic_holder .pp_details').css('margin-bottom'));
			contentWidth = width;
			containerHeight = height + parseFloat($('div.ppt').height()) + parseFloat($('div.pp_pic_holder .pp_top').height()) + parseFloat($('div.pp_pic_holder .pp_bottom').height());
			containerWidth = width + settings.padding;
		
			// Define them in case there's no resize needed
			imageWidth = width;
			imageHeight = height;

			windowHeight = $(window).height();
			windowWidth = $(window).width();
		
			if( ((containerWidth > windowWidth) || (containerHeight > windowHeight)) && doresize && settings.allowresize) {
				hasBeenResized = true;
				notFitting = true;
			
				while (notFitting){
					if((containerWidth > windowWidth)){
						imageWidth = (windowWidth - 200);
						imageHeight = (height/width) * imageWidth;
					}else if((containerHeight > windowHeight)){
						imageHeight = (windowHeight - 200);
						imageWidth = (width/height) * imageHeight;
					}else{
						notFitting = false;
					};

					containerHeight = imageHeight;
					containerWidth = imageWidth;
				};
			
				// Define the new dimensions
				contentHeight = imageHeight + parseFloat($('div.pp_pic_holder .pp_details').height()) + parseFloat($('div.pp_pic_holder .pp_details').css('margin-top')) + parseFloat($('div.pp_pic_holder .pp_details').css('margin-bottom'));
				contentWidth = imageWidth;
				containerHeight = imageHeight + parseFloat($('div.ppt').height()) + parseFloat($('div.pp_pic_holder .pp_top').height()) + parseFloat($('div.pp_pic_holder .pp_bottom').height());
				containerWidth = imageWidth + settings.padding;
			
				$('div.pp_pic_holder .pp_details').width(contentWidth); /* To have the correct height */
				$('div.pp_pic_holder .pp_details p.pp_description').width(contentWidth - parseFloat($('div.pp_pic_holder a.pp_close').css('width'))); /* So it doesn't overlap the button */
			};

			return {
				width:imageWidth,
				height:imageHeight,
				containerHeight:containerHeight,
				containerWidth:containerWidth,
				contentHeight:contentHeight,
				contentWidth:contentWidth,
				resized:hasBeenResized
			};
		};
	
		function _centerPicture(){
			if ($pp_pic_holder){ if($pp_pic_holder.size() == 0){ return; }}else{ return; }; //Make sure the gallery is open

			if($.browser.opera) {
				windowHeight = window.innerHeight;
				windowWidth = window.innerWidth;
			}else{
				windowHeight = $(window).height();
				windowWidth = $(window).width();
			};
		
			if(doresize) {
				$pHeight = $pp_pic_holder.height();
				$pWidth = $pp_pic_holder.width();
				$tHeight = $ppt.height();
				$offset = $pp_pic_holder.offset();
				
				projectedTop = (windowHeight/2) + $scrollPos['scrollTop'] - ($pHeight/2);
				if(projectedTop < 0) projectedTop = 0 + $tHeight;
				
				$pp_pic_holder.css({
					'top': projectedTop,
					'left': (windowWidth/2) + $scrollPos['scrollLeft'] - ($pWidth/2)
				});
		
				$ppt.css({
					'top' : $offset.top - $tHeight,
					'left' : $offset.left + (settings.padding/2)
				});
			};
		};
	
		function _shownav(){
			if(isSet) $pp_pic_holder.find('.pp_hoverContainer').fadeIn(settings.animationSpeed);
			$pp_pic_holder.find('.pp_details').fadeIn(settings.animationSpeed);
			_showTitle($pp_pic_holder,$ppt);
		};
	
		function _showTitle(){
			if(settings.showTitle && hasTitle){
				$ppt.css({
					'top' : $pp_pic_holder.offset().top - 22,
					'left' : $pp_pic_holder.offset().left + (settings.padding/2),
					'display' : 'none'
				});
			
				$ppt.find('div.ppt_content').css('width','auto');
			
				if($ppt.width() > $pp_pic_holder.width()){
					$ppt.find('div.ppt_content').css('width',$pp_pic_holder.width() - (settings.padding * 2));
				}else{
					$ppt.find('div.ppt_content').css('width','');
				};
			
				$ppt.fadeIn(settings.animationSpeed);
			};
		};
	
		function _hideTitle() {
			$ppt.fadeOut(settings.animationSpeed);
		};
	
		function _preload(){
			// Hide the next/previous links if on first or last images.
			_checkPosition();
		
			// Set the new image
			imgPreloader = new Image();
		
			// Preload the neighbour images
			nextImage = new Image();
			if(isSet && setPosition > setCount) nextImage.src = $(imagesArray[arrayPosition + 1]).attr('href');
			prevImage = new Image();
			if(isSet && imagesArray[arrayPosition - 1]) prevImage.src = $(imagesArray[arrayPosition - 1]).attr('href');

			$pp_pic_holder.find('.pp_content').css('overflow','hidden');
			$pp_pic_holder.find('#fullResImage').attr('src',$caller.attr('href'));

			imgPreloader.onload = function(){
				var correctSizes = _fitToViewport(imgPreloader.width,imgPreloader.height);
				imgPreloader.width = correctSizes['width'];
				imgPreloader.height = correctSizes['height'];
				showimage(imgPreloader.width,imgPreloader.height,correctSizes["containerWidth"],correctSizes["containerHeight"],correctSizes["contentHeight"],correctSizes["contentWidth"],correctSizes["resized"]);
			};
		
			imgPreloader.src = $caller.attr('href');
		};
	
		function _getScroll(){
			scrollTop = window.pageYOffset || document.documentElement.scrollTop || 0;
			scrollLeft = window.pageXOffset || document.documentElement.scrollLeft || 0;
			return {scrollTop:scrollTop,scrollLeft:scrollLeft};
		};
	
		function _resizeOverlay() {
			$('div.pp_overlay').css({
				'height':$(document).height(),
				'width':$(window).width()
			});
		};
	
		function _buildOverlay(){
			toInject = "";
			
			// Build the background overlay div
			toInject += "<div class='pp_overlay'></div>";
			
			// Basic HTML for the picture holder
			toInject += '<div class="pp_pic_holder"><div class="pp_top"><div class="pp_left"></div><div class="pp_middle"></div><div class="pp_right"></div></div><div class="pp_content"><a href="#" class="pp_expand" title="Expand the image">Expand</a><div class="pp_loaderIcon"></div><div class="pp_hoverContainer"><a class="pp_next" href="#">next</a><a class="pp_previous" href="#">previous</a></div><div id="pp_full_res"><img id="fullResImage" src="" /></div><div class="pp_details clearfix"><a class="pp_close" href="#">Close</a><p class="pp_description"></p><div class="pp_nav"><a href="#" class="pp_arrow_previous">Previous</a><p class="currentTextHolder">0'+settings.counter_separator_label+'0</p><a href="#" class="pp_arrow_next">Next</a></div></div></div><div class="pp_bottom"><div class="pp_left"></div><div class="pp_middle"></div><div class="pp_right"></div></div></div>';
			
			// Basic html for the title holder
			toInject += '<div class="ppt"><div class="ppt_left"></div><div class="ppt_content"></div><div class="ppt_right"></div></div>';
			
			$('body').append(toInject);
			
			// Set my global selectors
			$pp_pic_holder = $('.pp_pic_holder');
			$ppt = $('.ppt');
			
			$('div.pp_overlay').css('height',$(document).height()).bind('click',function(){
				close();
			});

			$pp_pic_holder.css({'opacity': 0}).addClass(settings.theme);

			$('a.pp_close').bind('click',function(){ close(); return false; });

			$('a.pp_expand').bind('click',function(){				
				$this = $(this);
				
				// Expand the image
				if($this.hasClass('pp_expand')){
					$this.removeClass('pp_expand').addClass('pp_contract');
					doresize = false;
				}else{
					$this.removeClass('pp_contract').addClass('pp_expand');
					doresize = true;
				};
			
				_hideTitle();
				
				$pp_pic_holder.find('.pp_hoverContainer, #pp_full_res, .pp_details').fadeOut(settings.animationSpeed,function(){
					_preload();
				});
		
				return false;	
			});
		
			$pp_pic_holder.find('.pp_previous, .pp_arrow_previous').bind('click',function(){
				changePicture('previous');
				return false;
			});
		
			$pp_pic_holder.find('.pp_next, .pp_arrow_next').bind('click',function(){
				changePicture('next');
				return false;
			});

			$pp_pic_holder.find('.pp_hoverContainer').css({
				'margin-left': settings.padding/2
			});
		
			// If it's not a set, hide the links
			if(!isSet) {
				$pp_pic_holder.find('.pp_hoverContainer,.pp_nav').hide();
			};


			// To fix the bug with IE select boxes
			if($.browser.msie && $.browser.version == 6){
				$('body').addClass('ie6');
				$('select').css('visibility','hidden');
			};

			// Then fade it in
			$('div.pp_overlay').css('opacity',0).fadeTo(settings.animationSpeed,settings.opacity, function(){
				$pp_pic_holder.css('opacity',0).fadeIn(settings.animationSpeed,function(){
					$pp_pic_holder.attr('style','left:'+$pp_pic_holder.css('left')+';top:'+$pp_pic_holder.css('top')+';');
					_preload();
				});
			});
		};
	};
})(jQuery);