/**
* Galleria (http://monc.se/kitchen)
*
* Galleria is a javascript image gallery written in jQuery. 
* It loads the images one by one from an unordered list and displays thumbnails when each image is loaded. 
* It will create thumbnails for you if you choose so, scaled or unscaled, 
* centered and cropped inside a fixed thumbnail box defined by CSS.
* 
* The core of Galleria lies in it's smart preloading behaviour, snappiness and the fresh absence 
* of obtrusive design elements. Use it as a foundation for your custom styled image gallery.
*
* MAJOR CHANGES v.FROM 0.9
* Galleria now features a useful history extension, enabling back button and bookmarking for each image.
* The main image is no longer stored inside each list item, instead it is placed inside a container
* onImage and onThumb functions lets you customize the behaviours of the images on the site
*
* Tested in Safari 3, Firefox 2, MSIE 6, MSIE 7, Opera 9
* 
* Version 1.0
* Februari 21, 2008
*
* Copyright (c) 2008 David Hellsing (http://monc.se)
* Licensed under the GPL licenses.
* http://www.gnu.org/licenses/gpl.txt
**/

; (function($) {

  var $$;


  /**
  * 
  * @desc Convert images from a simple html <ul> into a thumbnail gallery
  * @author David Hellsing
  * @version 1.0
  *
  * @name Galleria
  * @type jQuery
  *
  * @cat plugins/Media
  * 
  * @example $('ul.gallery').galleria({options});
  * @desc Create a a gallery from an unordered list of images with thumbnails
  * @options
  *   insert:   (selector string) by default, Galleria will create a container div before your ul that holds the image.
  *             You can, however, specify a selector where the image will be placed instead (f.ex '#main_img')
  *   history:  Boolean for setting the history object in action with enabled back button, bookmarking etc.
  *   onImage:  (function) a function that gets fired when the image is displayed and brings the jQuery image object.
  *             You can use it to add click functionality and effects.
  *             f.ex onImage(image) { image.css('display','none').fadeIn(); } will fadeIn each image that is displayed
  *   onThumb:  (function) a function that gets fired when the thumbnail is displayed and brings the jQuery thumb object.
  *             Works the same as onImage except it targets the thumbnail after it's loaded.
  *
  **/

  $$ = $.fn.galleria = function($options) {

    // check for basic CSS support
    if (!$$.hasCSS()) { return false; }

    // init the modified history object
    $.historyInit($$.onPageLoad);

    // set default options
    var $defaults = {
      insert: '.galleria_container',
      history: true,
      clickNext: true,
      onImage: function(image, caption, thumb) { },
      onThumb: function(thumb) { }
    };


    // extend the options
    var $opts = $.extend($defaults, $options);

    // bring the options to the galleria object
    for (var i in $opts) {
      $.galleria[i] = $opts[i];
    }

    // if no insert selector, create a new division and insert it before the ul
    var _insert = ($($opts.insert).is($opts.insert)) ?
		$($opts.insert) :
		jQuery(document.createElement('div')).insertBefore(this);

    // create a wrapping div for the image
    var _div = $(document.createElement('div')).addClass('galleria_wrapper');

    // create a caption span
    var _span = $(document.createElement('span')).addClass('caption');

    // inject the wrapper in in the insert selector
    _insert.addClass('galleria_container').append(_div).append(_span);

    //-------------

    return this.each(function() {

      // add the Galleria class
      $(this).addClass('galleria');

      // loop through list
      $(this).children('li').each(function(i) {

        // bring the scope
        var _container = $(this);

        // build element specific options
        var _o = $.meta ? $.extend({}, $opts, _container.data()) : $opts;

        // remove the clickNext if image is only child
        _o.clickNext = $(this).is(':only-child') ? false : _o.clickNext;

        // try to fetch an anchor
        var _a = $(this).find('a').is('a') ? $(this).find('a') : false;

        // reference the original image as a variable and hide it
        var _img = $(this).children('img').css('display', 'none');

        // extract the original source
        var _src = _a ? _a.attr('href') : _img.attr('src');

        // find a title
        var _title = _a ? _a.attr('title') : _img.attr('title');

        // create loader image            
        var _loader = new Image();

        // check url and activate container if match
        if (_o.history && (window.location.hash && window.location.hash.replace(/\#/, '') == _src)) {
          _container.siblings('.active').removeClass('active');
          _container.addClass('active');
        }

        // begin loader
        $(_loader).load(function() {

          // try to bring the alt
          $(this).attr('alt', _img.attr('alt'));

          //-----------------------------------------------------------------
          // the image is loaded, let's create the thumbnail

          var _thumb = _a ?
					_a.find('img').addClass('thumb noscale').css('display', 'none') :
					_img.clone(true).addClass('thumb').css('display', 'none');

          if (_a) { _a.replaceWith(_thumb); }

          if (!_thumb.hasClass('noscale')) { // scaled tumbnails!
            var w = Math.ceil(_img.width() / _img.height() * _container.height());
            var h = Math.ceil(_img.height() / _img.width() * _container.width());
            if (w < h) {
              _thumb.css({ height: 'auto', width: _container.width(), marginTop: -(h - _container.height()) / 2 });
            } else {
              _thumb.css({ width: 'auto', height: _container.height(), marginLeft: -(w - _container.width()) / 2 });
            }
          } else { // Center thumbnails.
            // a tiny timer fixed the width/height
            window.setTimeout(function() {
              _thumb.css({
                marginLeft: -(_thumb.width() - _container.width()) / 2,
                marginTop: -(_thumb.height() - _container.height()) / 2
              });
            }, 1);
          }

          // add the rel attribute
          _thumb.attr('rel', _src);

          // add the title attribute
          _thumb.attr('title', _title);

          // add the click functionality to the _thumb
          _thumb.click(function() {
            $.galleria.activate(_src);
          });

          // hover classes for IE6
          _thumb.hover(
					function() { $(this).addClass('hover'); },
					function() { $(this).removeClass('hover'); }
				);
          _container.hover(
					function() { _container.addClass('hover'); },
					function() { _container.removeClass('hover'); }
				);

          // prepend the thumbnail in the container
          _container.prepend(_thumb);

          // show the thumbnail
          _thumb.css('display', 'block');

          // call the onThumb function
          _o.onThumb(jQuery(_thumb));

          // check active class and activate image if match
          if (_container.hasClass('active')) {
            $.galleria.activate(_src);
            //_span.text(_title);
          }

          //-----------------------------------------------------------------

          // finally delete the original image
          _img.remove();

        }).error(function() {

          // Error handling
          _container.html('<span class="error" style="color:red">Error loading image: ' + _src + '</span>');

        }).attr('src', _src);
      });
    });
  };

  /**
  *
  * @name NextSelector
  *
  * @desc Returns the sibling sibling, or the first one
  *
  **/

  $$.nextSelector = function(selector) {
    return $(selector).is(':last-child') ?
		   $(selector).siblings(':first-child') :
    	   $(selector).next();

  };

  /**
  *
  * @name previousSelector
  *
  * @desc Returns the previous sibling, or the last one
  *
  **/

  $$.previousSelector = function(selector) {
    return $(selector).is(':first-child') ?
		   $(selector).siblings(':last-child') :
    	   $(selector).prev();

  };

  /**
  *
  * @name hasCSS
  *
  * @desc Checks for CSS support and returns a boolean value
  *
  **/

  $$.hasCSS = function() {
    $('body').append(
		$(document.createElement('div')).attr('id', 'css_test')
		.css({ width: '1px', height: '1px', display: 'none' })
	);
    var _v = ($('#css_test').width() != 1) ? false : true;
    $('#css_test').remove();
    return _v;
  };

  /**
  *
  * @name onPageLoad
  *
  * @desc The function that displays the image and alters the active classes
  *
  * Note: This function gets called when:
  * 1. after calling $.historyInit();
  * 2. after calling $.historyLoad();
  * 3. after pushing "Go Back" button of a browser
  *
  **/

  $$.onPageLoad = function(_src) {

    // get the wrapper
    var _wrapper = $('.galleria_wrapper');

    // Get the info
    var _info = $('.GalleryImageInfo');

    // get the thumb
    var _thumb = $('.galleria img[@rel="' + _src + '"]');

    if (_src) {

      // new hash location
      if ($.galleria.history) {
        window.location = window.location.href.replace(/\#.*/, '') + '#' + _src;
      }

      // alter the active classes
      _thumb.parents('li').siblings('.active').removeClass('active');
      _thumb.parents('li').addClass('active');

      // define a new image
      var _img = $(new Image()).attr('src', _src.toString().replace('/thumb', '')).addClass('replaced');

      // empty the wrapper and insert the new image
      _wrapper.empty().append(_img);

      // insert the caption
      _wrapper.siblings('.caption').text(_thumb.attr('title'));

      // fire the onImage function to customize the loaded image's features
      $.galleria.onImage(_img, _wrapper.siblings('.caption'), _thumb);

      // add clickable image helper
      if ($.galleria.clickNext) {
        _img.css('cursor', 'pointer').click(function() { $.galleria.next(); })
      }

      $("#GalleryLoading").toggle();

      $.ajax({ type: "POST",
        url: "AlbumService.asmx/GetContentId",
        dataType: "xml",
        data: "thumbSource=" + _src,
        processData: false,
        error: function(XMLHttpRequest, textStatus, errorThrown) { ajaxError(XMLHttpRequest, textStatus, errorThrown); },
        success: function(xml) { ajaxFinish(xml); }
      });
    } else {

      // clean up the container if none are active
      _wrapper.siblings().andSelf().empty();

      // remove active classes
      $('.galleria li.active').removeClass('active');
    }

    // place the source in the galleria.current variable
    $.galleria.current = _src;

  }

  /**
  *
  * @name jQuery.galleria
  *
  * @desc The global galleria object holds four constant variables and four public methods:
  *       $.galleria.history = a boolean for setting the history object in action with named URLs
  *       $.galleria.current = is the current source that's being viewed.
  *       $.galleria.clickNext = boolean helper for adding a clickable image that leads to the next one in line
  *       $.galleria.next() = displays the next image in line, returns to first image after the last.
  *       $.galleria.prev() = displays the previous image in line, returns to last image after the first.
  *       $.galleria.activate(_src) = displays an image from _src in the galleria container.
  *       $.galleria.onImage(image,caption) = gets fired when the image is displayed.
  *
  **/

  $.extend({ galleria: {
    current: '',
    onImage: function() { },
    activate: function(_src) {
      if ($.galleria.history) {
        $.historyLoad(_src);
      } else {
        $$.onPageLoad(_src);
      }
    },
    next: function() {
      var _next = $($$.nextSelector($('.galleria img[@rel="' + $.galleria.current + '"]').parents('li'))).find('img').attr('rel');
      $.galleria.activate(_next);
    },
    prev: function() {
      var _prev = $($$.previousSelector($('.galleria img[@rel="' + $.galleria.current + '"]').parents('li'))).find('img').attr('rel');
      $.galleria.activate(_prev);
    }
  }
  });

})(jQuery);


/*
More stuff
*/

function ajaxFinish(xml) {
  var _contentImageId = $("int", xml).text();

  var _info = $('#GalleryLink');
  _info.empty();

  $.ajax({ type: "POST",
    url: "AlbumService.asmx/HasBeenImageOfTheWeek",
    dataType: "xml",
    data: "contentImageId=" + _contentImageId,
    processData: false,
    error: function(XMLHttpRequest, textStatus, errorThrown) { ajaxError(XMLHttpRequest, textStatus, errorThrown); },
    success: function(xml) { ajaxImageOfTheWeek(xml); }
  });

  $.ajax({ type: "POST",
    url: "AlbumService.asmx/GetImageComments",
    dataType: "xml",
    data: "contentImageId=" + _contentImageId,
    processData: false,
    error: function(XMLHttpRequest, textStatus, errorThrown) { ajaxError(XMLHttpRequest, textStatus, errorThrown); },
    success: function(xml) { ajaxComments(xml); }
  });

  _info.append('<a onclick="javascript:myPopup(\'SimpleImage.aspx?imageId=' + _contentImageId + '\',\'Hress.Org\',\'800\',\'650\',\'10\',\'10\')" style="cursor: pointer">Skrifa athugasemd</a>');
  /*
  var _basicModal = $(document.createElement('div'));
  _basicModal.append('<a href="#" class="basic">Skrifa athugasemd</a>');
  _basicModal.click(function(e) { e.preventDefault(); $('#basicModalContent').modal(); });
  _info.append(_basicModal);
  $('#basicModalContent').append('<iframe src="SimpleImage.aspx?ImageId=' + _contentImageId + '" width="800px" height="300px"></iframe>');
  */
}

function ajaxImageOfTheWeek(xml) {
  var _hasBeenImageOfTheWeek = $("string", xml).text();
  var _info = $('#GalleryImageOfTheWeek');
  _info.empty();

  if (_hasBeenImageOfTheWeek != null && _hasBeenImageOfTheWeek != "") {
    _info.append('<img src="/Images/beer.jpg"/><b>' + _hasBeenImageOfTheWeek + '</b><br/>');
  }
}

function ajaxComments(xml) {
  var _info = $('#GalleryComment');
  _info.empty();
  _info.append('<b>Athugasemdir:</b>');

  var _comment;
  var _author;
  var _authorId;
  var _inserted;

  $("anyType", xml).each(function() {
    _comment = $("Text", this).text();
    _author = $("Username", this).text();
    _authorId = $("UserId", this).text();
    _inserted = $("Inserted", this).text();
    _info.append('<div class="GalleryComment">' + _inserted + '<br/>' + _comment + '<br/><a href="/Gang/Single.aspx?id=' + _authorId + '">' + _author + '</a>' + '</div>');
  });

  $("#GalleryLoading").toggle();
}

function ajaxError(xmlObj, textStatus, errorThrown) {
  // Comment this out for live environments, and put a friendly error message
  alert("Unable to connect to data source.");

  $("#GalleryLoading").toggle();
}


/**
*
* Packed history extension for jQuery
* Credits to http://www.mikage.to/
*
**/


jQuery.extend({ historyCurrentHash: undefined, historyCallback: undefined, historyInit: function(callback) { jQuery.historyCallback = callback; var current_hash = location.hash; jQuery.historyCurrentHash = current_hash; if (jQuery.browser.msie) { if (jQuery.historyCurrentHash == '') { jQuery.historyCurrentHash = '#' } $("body").prepend('<iframe id="jQuery_history" style="display: none;"></iframe>'); var ihistory = $("#jQuery_history")[0]; var iframe = ihistory.contentWindow.document; iframe.open(); iframe.close(); iframe.location.hash = current_hash } else if ($.browser.safari) { jQuery.historyBackStack = []; jQuery.historyBackStack.length = history.length; jQuery.historyForwardStack = []; jQuery.isFirst = true } jQuery.historyCallback(current_hash.replace(/^#/, '')); setInterval(jQuery.historyCheck, 100) }, historyAddHistory: function(hash) { jQuery.historyBackStack.push(hash); jQuery.historyForwardStack.length = 0; this.isFirst = true }, historyCheck: function() { if (jQuery.browser.msie) { var ihistory = $("#jQuery_history")[0]; var iframe = ihistory.contentDocument || ihistory.contentWindow.document; var current_hash = iframe.location.hash; if (current_hash != jQuery.historyCurrentHash) { location.hash = current_hash; jQuery.historyCurrentHash = current_hash; jQuery.historyCallback(current_hash.replace(/^#/, '')) } } else if ($.browser.safari) { if (!jQuery.dontCheck) { var historyDelta = history.length - jQuery.historyBackStack.length; if (historyDelta) { jQuery.isFirst = false; if (historyDelta < 0) { for (var i = 0; i < Math.abs(historyDelta); i++) jQuery.historyForwardStack.unshift(jQuery.historyBackStack.pop()) } else { for (var i = 0; i < historyDelta; i++) jQuery.historyBackStack.push(jQuery.historyForwardStack.shift()) } var cachedHash = jQuery.historyBackStack[jQuery.historyBackStack.length - 1]; if (cachedHash != undefined) { jQuery.historyCurrentHash = location.hash; jQuery.historyCallback(cachedHash) } } else if (jQuery.historyBackStack[jQuery.historyBackStack.length - 1] == undefined && !jQuery.isFirst) { if (document.URL.indexOf('#') >= 0) { jQuery.historyCallback(document.URL.split('#')[1]) } else { var current_hash = location.hash; jQuery.historyCallback('') } jQuery.isFirst = true } } } else { var current_hash = location.hash; if (current_hash != jQuery.historyCurrentHash) { jQuery.historyCurrentHash = current_hash; jQuery.historyCallback(current_hash.replace(/^#/, '')) } } }, historyLoad: function(hash) { var newhash; if (jQuery.browser.safari) { newhash = hash } else { newhash = '#' + hash; location.hash = newhash } jQuery.historyCurrentHash = newhash; if (jQuery.browser.msie) { var ihistory = $("#jQuery_history")[0]; var iframe = ihistory.contentWindow.document; iframe.open(); iframe.close(); iframe.location.hash = newhash; jQuery.historyCallback(hash) } else if (jQuery.browser.safari) { jQuery.dontCheck = true; this.historyAddHistory(hash); var fn = function() { jQuery.dontCheck = false }; window.setTimeout(fn, 200); jQuery.historyCallback(hash); location.hash = newhash } else { jQuery.historyCallback(hash) } } });