/* ------------------------------------------------------------------------
  Class: prettyPhoto
  Use: Lightbox clone for jQuery
  Author: Stephane Caron (http://www.no-margin-for-errors.com)
  Version: 2.5.3
------------------------------------------------------------------------- */

(function($) {
  $.prettyPhoto = {version: '2.5.3'};

  $.fn.prettyPhoto = function(settings) {
    settings = jQuery.extend({
      animationSpeed: 'normal', /* fast/slow/normal */
      padding: 30, /* padding for each side of the picture */
      opacity: 0.75, /* 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 */
      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, settings,

    // 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();
      });
      if (pp_type == "iframe")
      {
          pp_typeMarkup = '<iframe src ="about:blank;" width="'+(correctSizes['width']-10)+'" height="'+(correctSizes['height']-10)+'" frameborder="no"></iframe>';
          _showContent();
      }
      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);