/* ------------------------------------------------------------------------
    Class: prettyPhoto
    Use: Lightbox clone for jQuery
    Author: Stephane Caron (http://www.no-margin-for-errors.com)
    Version: 2.5.4
------------------------------------------------------------------------- */

(function($) {
    $.prettyPhoto = {version: '2.5.4'};
    
    $.fn.prettyPhoto = function(settings) {
        settings = jQuery.extend({
            animationSpeed: 'normal', /* fast/slow/normal */
            padding: 40, /* padding for each side of the picture */
            opacity: 0.80, /* 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: 'dark_rounded', /* light_rounded / dark_rounded / light_square / dark_square */
            hideflash: false, /* Hides all the flash object on a page, set to TRUE if flash appears over prettyPhoto */
            modal: false, /* If set to true, only the close button will close the window */
            changepicturecallback: function(){}, /* Called everytime an item is shown/changed */
            callback: function(){} /* Called when prettyPhoto is closed */
        }, settings);
        
        // Fallback to a supported theme for IE6
        if($.browser.msie && $.browser.version == 6){
            settings.theme = "light_square";
        }
        
        if($('.pp_overlay').size() == 0) {
            _buildOverlay(); // If the overlay is not there, inject it!
        }else{
            // Set my global selectors
            $pp_pic_holder = $('.pp_pic_holder');
            $ppt = $('.ppt');
        }
        
        // Global variables accessible only by prettyPhoto
        var doresize = true, percentBased = false, correctSizes,
        
        // Cached selectors
        $pp_pic_holder, $ppt,
        
        // prettyPhoto container specific
        pp_contentHeight, pp_contentWidth, pp_containerHeight, pp_containerWidth, pp_type = 'image',
    
        //Gallery specific
        setPosition = 0,

        // Global elements
        $scrollPos = _getScroll();
    
        // Window/Keyboard events
        $(window).scroll(function(){ $scrollPos = _getScroll(); _centerOverlay(); _resizeOverlay(); });
        $(window).resize(function(){ _centerOverlay(); _resizeOverlay(); });
        $(document).keydown(function(e){
            if($pp_pic_holder.is(':visible'))
            switch(e.keyCode){
                case 37:
                    $.prettyPhoto.changePage('previous');
                    break;
                case 39:
                    $.prettyPhoto.changePage('next');
                    break;
                case 27:
                    if(!settings.modal)
                    $.prettyPhoto.close();
                    break;
            };
        });
    
        // Bind the code to each links
        $(this).each(function(){
            $(this).bind('click',function(){
                
                link = this; // Fix scoping
                
                // Find out if the picture is part of a set
                theRel = $(this).attr('rel');
                galleryRegExp = /\[(?:.*)\]/;
                theGallery = galleryRegExp.exec(theRel);
                
                // Build the gallery array
                var images = new Array(), titles = new Array(), descriptions = new Array();
                if(theGallery){
                    $('a[rel*='+theGallery+']').each(function(i){
                        if($(this)[0] === $(link)[0]) setPosition = i; // Get the position in the set
                        images.push($(this).attr('href'));
                        titles.push($(this).find('img').attr('alt'));
                        descriptions.push($(this).attr('title'));
                    });
                }else{
                    images = $(this).attr('href');
                    titles = ($(this).find('img').attr('alt')) ?  $(this).find('img').attr('alt') : '';
                    descriptions = ($(this).attr('title')) ?  $(this).attr('title') : '';
                }

                $.prettyPhoto.open(images,titles,descriptions);
                return false;
            });
        });
    
        
        /**
        * Opens the prettyPhoto modal box.
        * @param image {String,Array} Full path to the image to be open, can also be an array containing full images paths.
        * @param title {String,Array} The title to be displayed with the picture, can also be an array containing all the titles.
        * @param description {String,Array} The description to be displayed with the picture, can also be an array containing all the descriptions.
        */
        $.prettyPhoto.open = function(gallery_images,gallery_titles,gallery_descriptions) {
            // To fix the bug with IE select boxes
            if($.browser.msie && $.browser.version == 6){
                $('select').css('visibility','hidden');
            };
            
            // Hide the flash
            if(settings.hideflash) $('object,embed').css('visibility','hidden');
            
            // Convert everything to an array in the case it's a single item
            images = $.makeArray(gallery_images);
            titles = $.makeArray(gallery_titles);
            descriptions = $.makeArray(gallery_descriptions);
            
            if($('.pp_overlay').size() == 0) {
                _buildOverlay(); // If the overlay is not there, inject it!
            }else{
                // Set my global selectors
                $pp_pic_holder = $('.pp_pic_holder');
                $ppt = $('.ppt');
            }
            
            $pp_pic_holder.attr('class','pp_pic_holder ' + settings.theme); // Set the proper theme

            isSet = ($(images).size() > 0) ?  true : false; // Find out if it's a set

            _getFileType(images[setPosition]); // Set the proper file type

            _centerOverlay(); // Center it

            // Hide the next/previous links if on first or last images.
            _checkPosition($(images).size());
        
            $('.pp_loaderIcon').show(); // Do I need to explain?
        
            // Fade the content in
            $('div.pp_overlay').show().fadeTo(settings.animationSpeed,settings.opacity, function(){
                $pp_pic_holder.fadeIn(settings.animationSpeed,function(){
                    // Display the current position
                    $pp_pic_holder.find('p.currentTextHolder').text((setPosition+1) + settings.counter_separator_label + $(images).size());

                    // Set the description
                    if(descriptions[setPosition]){
                        $pp_pic_holder.find('.pp_description').show().html(unescape(descriptions[setPosition]));
                    }else{
                        $pp_pic_holder.find('.pp_description').hide().text('');
                    };

                    // Set the title
                    if(titles[setPosition] && settings.showTitle){
                        hasTitle = true;
                        $ppt.html(unescape(titles[setPosition]));
                    }else{
                        hasTitle = false;
                    };
                    
                    // Inject the proper content
                    if(pp_type == 'image'){
                        // Set the new image
                        imgPreloader = new Image();

                        // Preload the neighbour images
                        nextImage = new Image();
                        if(isSet && setPosition > $(images).size()) nextImage.src = images[setPosition + 1];
                        prevImage = new Image();
                        if(isSet && images[setPosition - 1]) prevImage.src = images[setPosition - 1];

                        pp_typeMarkup = '<img id="fullResImage" src="" />';             
                        $pp_pic_holder.find('#pp_full_res')[0].innerHTML = pp_typeMarkup;

                        $pp_pic_holder.find('.pp_content').css('overflow','hidden');
                        $pp_pic_holder.find('#fullResImage').attr('src',images[setPosition]);

                        imgPreloader.onload = function(){
                            // Fit item to viewport
                            correctSizes = _fitToViewport(imgPreloader.width,imgPreloader.height);
                            
                            _showContent();
                        };

                        imgPreloader.src = images[setPosition];
                    }else{
                        // Get the dimensions
                        movie_width = ( parseFloat(grab_param('width',images[setPosition])) ) ? grab_param('width',images[setPosition]) : "425";
                        movie_height = ( parseFloat(grab_param('height',images[setPosition])) ) ? grab_param('height',images[setPosition]) : "344";

                        // If the size is % based, calculate according to window dimensions
                        if(movie_width.indexOf('%') != -1 || movie_height.indexOf('%') != -1){
                            movie_height = ($(window).height() * parseFloat(movie_height) / 100) - 100;
                            movie_width = ($(window).width() * parseFloat(movie_width) / 100) - 100;
                            percentBased = true;
                        }

                        movie_height = parseFloat(movie_height);
                        movie_width = parseFloat(movie_width);

                        if(pp_type == 'quicktime') movie_height+=15; // Add space for the control bar

                        // Fit item to viewport
                        correctSizes = _fitToViewport(movie_width,movie_height);

                        if(pp_type == 'youtube'){
                            pp_typeMarkup = '<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="'+correctSizes['width']+'" height="'+correctSizes['height']+'"><param name="allowfullscreen" value="true" /><param name="allowscriptaccess" value="always" /><param name="movie" value="http://www.youtube.com/v/'+grab_param('v',images[setPosition])+'" /><embed src="http://www.youtube.com/v/'+grab_param('v',images[setPosition])+'" type="application/x-shockwave-flash" allowfullscreen="true" allowscriptaccess="always" width="'+correctSizes['width']+'" height="'+correctSizes['height']+'"></embed></object>';
                        }else if(pp_type == 'quicktime'){
                            pp_typeMarkup = '<object classid="clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B" codebase="http://www.apple.com/qtactivex/qtplugin.cab" height="'+correctSizes['height']+'" width="'+correctSizes['width']+'"><param name="src" value="'+images[setPosition]+'"><param name="autoplay" value="true"><param name="type" value="video/quicktime"><embed src="'+images[setPosition]+'" height="'+correctSizes['height']+'" width="'+correctSizes['width']+'" autoplay="true" type="video/quicktime" pluginspage="http://www.apple.com/quicktime/download/"></embed></object>';
                        }else if(pp_type == 'flash'){
                            flash_vars = images[setPosition];
                            flash_vars = flash_vars.substring(images[setPosition].indexOf('flashvars') + 10,images[setPosition].length);

                            filename = images[setPosition];
                            filename = filename.substring(0,filename.indexOf('?'));

                            pp_typeMarkup = '<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="'+correctSizes['width']+'" height="'+correctSizes['height']+'"><param name="allowfullscreen" value="true" /><param name="allowscriptaccess" value="always" /><param name="movie" value="'+filename+'?'+flash_vars+'" /><embed src="'+filename+'?'+flash_vars+'" type="application/x-shockwave-flash" allowfullscreen="true" allowscriptaccess="always" width="'+correctSizes['width']+'" height="'+correctSizes['height']+'"></embed></object>';
                        }else if(pp_type == 'iframe'){
                            movie_url = images[setPosition];
                            movie_url = movie_url.substr(0,movie_url.indexOf('iframe')-1);

                            pp_typeMarkup = '<iframe src ="'+movie_url+'" width="'+(correctSizes['width']-10)+'" height="'+(correctSizes['height']-10)+'" frameborder="no"></iframe>';
                        }

                        // Show content
                        _showContent();
                    }
                });
            });
        };
        
        /**
        * Change page in the prettyPhoto modal box
        * @param direction {String} Direction of the paging, previous or next.
        */
        $.prettyPhoto.changePage = function(direction){
            if(direction == 'previous') {
                setPosition--;
                if (setPosition < 0){
                    setPosition = 0;
                    return;
                }
            }else{
                if($('.pp_arrow_next').is('.disabled')) return;
                setPosition++;
            };

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

            _hideContent();
            $('a.pp_expand,a.pp_contract').fadeOut(settings.animationSpeed,function(){
                $(this).removeClass('pp_contract').addClass('pp_expand');
                $.prettyPhoto.open(images,titles,descriptions);
            });
        };
        
        /**
        * Closes the prettyPhoto modal box.
        */
        $.prettyPhoto.close = function(){
            $pp_pic_holder.find('object,embed').css('visibility','hidden');
            
            $('div.pp_pic_holder,div.ppt').fadeOut(settings.animationSpeed);
            
            $('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');
                };
                
                // Show the flash
                if(settings.hideflash) $('object,embed').css('visibility','visible');
                
                setPosition = 0;
                
                settings.callback();
            });
            
            doresize = true;
        };
    
        /**
        * Set the proper sizes on the containers and animate the content in.
        */
        _showContent = function(){
            $('.pp_loaderIcon').hide();

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

            // Calculate the opened top position of the pic holder
            projectedTop = $scrollPos['scrollTop'] + ((windowHeight/2) - (correctSizes['containerHeight']/2));
            if(projectedTop < 0) projectedTop = 0 + $pp_pic_holder.find('.ppt').height();

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

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

                // Show the nav
                if(isSet && pp_type=="image") { $pp_pic_holder.find('.pp_hoverContainer').fadeIn(settings.animationSpeed); }else{ $pp_pic_holder.find('.pp_hoverContainer').hide(); }
                $pp_pic_holder.find('.pp_details').fadeIn(settings.animationSpeed);

                // Show the title
                if(settings.showTitle && hasTitle){
                    $ppt.css({
                        'top' : $pp_pic_holder.offset().top - 20,
                        'left' : $pp_pic_holder.offset().left + (settings.padding/2),
                        'display' : 'none'
                    });

                    $ppt.fadeIn(settings.animationSpeed);
                };
            
                // Fade the resizing link if the image is resized
                if(correctSizes['resized']) $('a.pp_expand,a.pp_contract').fadeIn(settings.animationSpeed);
                
                // Once everything is done, inject the content if it's now a photo
                if(pp_type != 'image') $pp_pic_holder.find('#pp_full_res')[0].innerHTML = pp_typeMarkup;
                
                // Callback!
                settings.changepicturecallback();
            });
        };
        
        /**
        * Hide the content...DUH!
        */
        function _hideContent(){
            // Fade out the current picture
            $pp_pic_holder.find('#pp_full_res object,#pp_full_res embed').css('visibility','hidden');
            $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();
            });
            
            // Hide the title
            $ppt.fadeOut(settings.animationSpeed);
        }
    
        /**
        * Check the item position in the gallery array, hide or show the navigation links
        * @param setCount {integer} The total number of items in the set
        */
        function _checkPosition(setCount){
            // If at the end, hide the next link
            if(setPosition == setCount-1) {
                $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(){
                    $.prettyPhoto.changePage('next');
                    return false;
                });
            };
        
            // If at the beginning, hide the previous link
            if(setPosition == 0) {
                $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(){
                    $.prettyPhoto.changePage('previous');
                    return false;
                });
            };
            
            // Hide the bottom nav if it's not a set.
            if(setCount > 1) {
                $('.pp_nav').show();
            }else{
                $('.pp_nav').hide();
            }
        };
    
        /**
        * Resize the item dimensions if it's bigger than the viewport
        * @param width {integer} Width of the item to be opened
        * @param height {integer} Height of the item to be opened
        * @return An array containin the "fitted" dimensions
        */
        function _fitToViewport(width,height){
            hasBeenResized = false;
        
            _getDimensions(width,height);
            
            // Define them in case there's no resize needed
            imageWidth = width;
            imageHeight = height;

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

                    pp_containerHeight = imageHeight;
                    pp_containerWidth = imageWidth;
                };
            
                _getDimensions(imageWidth,imageHeight);
            };

            return {
                width:imageWidth,
                height:imageHeight,
                containerHeight:pp_containerHeight,
                containerWidth:pp_containerWidth,
                contentHeight:pp_contentHeight,
                contentWidth:pp_contentWidth,
                resized:hasBeenResized
            };
        };
        
        /**
        * Get the containers dimensions according to the item size
        * @param width {integer} Width of the item to be opened
        * @param height {integer} Height of the item to be opened
        */
        function _getDimensions(width,height){
            $pp_pic_holder.find('.pp_details').width(width).find('.pp_description').width(width - parseFloat($pp_pic_holder.find('a.pp_close').css('width'))); /* To have the correct height */
            
            // Get the container size, to resize the holder to the right dimensions
            pp_contentHeight = height + $pp_pic_holder.find('.pp_details').height() + parseFloat($pp_pic_holder.find('.pp_details').css('marginTop')) + parseFloat($pp_pic_holder.find('.pp_details').css('marginBottom'));
            pp_contentWidth = width;
            pp_containerHeight = pp_contentHeight + $pp_pic_holder.find('.ppt').height() + $pp_pic_holder.find('.pp_top').height() + $pp_pic_holder.find('.pp_bottom').height();
            pp_containerWidth = width + settings.padding;
        }
    
        function _getFileType(itemSrc){
            if (itemSrc.match(/youtube\.com\/watch/i)) {
                pp_type = 'youtube';
            }else if(itemSrc.indexOf('.mov') != -1){ 
                pp_type = 'quicktime';
            }else if(itemSrc.indexOf('.swf') != -1){
                pp_type = 'flash';
            }else if(itemSrc.indexOf('iframe') != -1){
                pp_type = 'iframe'
            }else{
                pp_type = 'image';
            };
        };
    
        function _centerOverlay(){
            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();
                
                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' : projectedTop - $tHeight,
                    'left' : (windowWidth/2) + $scrollPos['scrollLeft'] - ($pWidth/2) + (settings.padding/2)
                });
            };
        };
    
        function _getScroll(){
            if (self.pageYOffset) {
                scrollTop = self.pageYOffset;
                scrollLeft = self.pageXOffset;
            } else if (document.documentElement && document.documentElement.scrollTop) { // Explorer 6 Strict
                scrollTop = document.documentElement.scrollTop;
                scrollLeft = document.documentElement.scrollLeft;
            } else if (document.body) {// all other Explorers
                scrollTop = document.body.scrollTop;
                scrollLeft = document.body.scrollLeft;  
            }
            
            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"></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>';
            
            $('body').append(toInject);
            
            // So it fades nicely
            $('div.pp_overlay').css('opacity',0);
            
            // Set my global selectors
            $pp_pic_holder = $('.pp_pic_holder');
            $ppt = $('.ppt');
            
            $('div.pp_overlay').css('height',$(document).height()).hide().bind('click',function(){
                if(!settings.modal)
                $.prettyPhoto.close();
            });

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

            $('a.pp_expand').bind('click',function(){
                $this = $(this); // Fix scoping
                
                // 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;
                };
            
                _hideContent();
                
                $pp_pic_holder.find('.pp_hoverContainer, .pp_details').fadeOut(settings.animationSpeed);
                $pp_pic_holder.find('#pp_full_res').fadeOut(settings.animationSpeed,function(){
                    $.prettyPhoto.open(images,titles,descriptions);
                });
        
                return false;
            });
        
            $pp_pic_holder.find('.pp_previous, .pp_arrow_previous').bind('click',function(){
                $.prettyPhoto.changePage('previous');
                return false;
            });
        
            $pp_pic_holder.find('.pp_next, .pp_arrow_next').bind('click',function(){
                $.prettyPhoto.changePage('next');
                return false;
            });

            $pp_pic_holder.find('.pp_hoverContainer').css({
                'margin-left': settings.padding/2
            });
        };
    };
    
    function grab_param(name,url){
      name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
      var regexS = "[\\?&]"+name+"=([^&#]*)";
      var regex = new RegExp( regexS );
      var results = regex.exec( url );
      if( results == null )
        return "";
      else
        return results[1];
    }
})(jQuery);
