/*
 * facybox (for jQuery)
 * version: 1.0 (11/09/2009)
 * @requires jQuery v1.2 or later
 *
 * Examples at http://bitbonsai.com/facybox/
 *
 * Licensed under the MIT:
 *   http://www.opensource.org/licenses/mit-license.php
 *
 * Copyright 2009 Mauricio Wolff [ chris@ozmm.org ]
 *
 * Usage:
 *
 *  jQuery(document).ready(function() {
 *    jQuery('a[rel*=facybox]').facybox()
 *  })
 *
 *  <a href="#terms" rel="facybox">Terms</a>
 *    Loads the #terms div in the box
 *
 *  <a href="terms.html" rel="facybox">Terms</a>
 *    Loads the terms.html page in the box
 *
 *  <a href="terms.png" rel="facybox">Terms</a>
 *    Loads the terms.png image in the box
 *
 *
 *  You can also use it programmatically:
 *
 *    jQuery.facybox('some html')
 *    jQuery.facybox('some html', 'my-groovy-style')
 *
 *  The above will open a facybox with "some html" as the content.
 *
 *    jQuery.facybox(function($) {
 *      $.get('blah.html', function(data) { $.facybox(data) })
 *    })
 *
 *  The above will show a loading screen before the passed function is called,
 *  allowing for a better ajaxy experience.
 *
 *  The facybox function can also display an ajax page, an image, or the contents of a div:
 *
 *    jQuery.facybox({ ajax: 'remote.html' })
 *    jQuery.facybox({ ajax: 'remote.html' }, 'my-groovy-style')
 *    jQuery.facybox({ image: 'stairs.jpg' })
 *    jQuery.facybox({ images: ['stairs.jpg','ballon.jpg'] })
 *    jQuery.facybox({ images: ['stairs.jpg','ballon.jpg'], initial:'ballon.jpg'})
 *    jQuery.facybox({ image: 'stairs.jpg' }, 'my-groovy-style')
 *    jQuery.facybox({ div: '#box' })
 *    jQuery.facybox({ div: '#box' }, 'my-groovy-style')
 *
 *  Want to close the facybox?  Trigger the 'close.facybox' document event:
 *
 *    jQuery(document).trigger('close.facybox')
 *
 *  facybox also has a bunch of other hooks:
 *
 *    loading.facybox
 *    beforeReveal.facybox
 *    reveal.facybox (aliased as 'afterReveal.facybox')
 *    init.facybox
 *
 *  Simply bind a function to any of these hooks:
 *
 *   $(document).bind('reveal.facybox', function() { ...stuff to do after the facybox and contents are revealed... })
 *
 */
(function($) {
  //TODO refactor using data.content_klass
  $.facybox = function(data, klass) {
    $.facybox.loading();
    $.facybox.content_klass = klass;
    if (data.ajax) revealAjax(data.ajax);
    else if(data.image) revealImage(data.image);
    else if(data.images) revealGallery(data.images,data.initial);
    else if(data.div) revealHref(data.div);
    else if($.isFunction(data)) data.call($);
    else $.facybox.reveal(data);
  }

  /*
   * Public, $.facybox methods
   */

  $.extend($.facybox, {
    //possible option: noAutoload --- will build facybox only when it is needed
    settings: {
      opacity      : 0.3,
      overlay      : false,
      modal        : false,
      imageTypes   : [ 'png', 'jpg', 'jpeg', 'gif' ]
    },

    html : function(){
      return '\
		<div id="facybox" style="display:none;"> \
			<div class="fbpopup"> \
				<table> \
					<tbody> \
						<tr> \
							<td class="nw"/><td class="n" /><td class="ne"/> \
						</tr> \
						<tr> \
							<td class="w" /> \
							<td class="body"> \
							<div class="above-content"> \
								<a href="#" class="close">close</a>\
							</div> \
							<div class="content"> \
							</div> \
							<div class="below-content"> \
								<a href="#" class="close">close</a>\
							</div> \
						</td> \
							<td class="e"/> \
						</tr> \
						<tr> \
							<td class="sw"/><td class="s"/><td class="se"/> \
						</tr> \
					</tbody> \
				</table> \
			</div> \
		</div> \
	'
    },

    loading: function(){
      init();
      if($('.loading',$('#facybox'))[0]) return;//already in loading state...
	  showOverlay();
      $.facybox.wait();
      if (!$.facybox.settings.modal) {
        $(document).bind('keydown.facybox', function(e) {
          if(e.keyCode == 27) $.facybox.close();//ESC
        });
      }
      $(document).trigger('loading.facybox');
    },

    wait: function(){
      var $f = $('#facybox');
      $('.content',$f).empty();//clear out old content
      $('.body',$f).children().hide().end().append('<div class="loading"></div>');
      $f.fadeIn('fast');
	  $.facybox.centralize();
      $(document).trigger('reveal.facybox').trigger('afterReveal.facybox');
    },

    centralize: function(){
      $('#facybox').css({
        top:	$(window).scrollTop() + ($(window).height() / 10),
        left: $(window).width() / 2 - ($('#facybox table').width() / 2)
      });
    },

	getViewport: function() {
		return [$(window).width(), $(window).height(), $(document).scrollLeft(), $(document).scrollTop() ];
	},

    reveal: function(content){
		$(document).trigger('beforeReveal.facybox');
		var $f = $('#facybox');
		$('.content',$f)
			.attr('class',($.facybox.content_klass||'')+' content') //do not simply add the new class, since on the next call the old classes would remain
			.html(content);
		$('.loading',$f).remove();
		$('.body',$f).children().fadeIn('fast');
	
		
		var pos = $.facybox.getViewport();
		var wl = parseInt(pos[0]/2) - parseInt($f.find("table").width() / 2);
		var wt = parseInt(pos[1]/2) - parseInt($f.find("table").height() / 2);
		
		if(pos[1] < $f.height()){
			wt = 40;
		}
		
		$f.css('left', wl);
	
	
		$(document).trigger('reveal.facybox').trigger('afterReveal.facybox');
    },

    close: function(){
      $(document).trigger('close.facybox');
      return false;
    }
  });

  /*
   * Bind to links, on click they open a facybox which
   * contains what their href points to
   */
  $.fn.facybox = function(settings) {
    var $this = $(this);
    if(!$this[0]) return $this;//called on empty elements, just stop and continue chain
    if(settings)$.extend($.facybox.settings, settings);
    if(!$.facybox.settings.noAutoload) init();

    $this.bind('click.facybox',function(){
      $.facybox.loading();
      // support for rel="facybox.inline_popup" syntax, to add a class
      // also supports deprecated "facybox[.inline_popup]" syntax
      var klass = this.rel.match(/facybox\[?\.(\w+)\]?/);
      $.facybox.content_klass = klass ? klass[1] : '';
      revealHref(this.href);
      return false;
    });
    return $this;//continue chain
  }

  /*
   * Private methods
   */
  // called one time to setup facybox on this page
  function init() {
    if($.facybox.settings.inited) return;
    else $.facybox.settings.inited = true;

    $(document).trigger('init.facybox');
    makeBackwardsCompatible();

    var imageTypes = $.facybox.settings.imageTypes.join('|');
    $.facybox.settings.imageTypesRegexp = new RegExp('\.(' + imageTypes + ')', 'i');

    $('body').append($.facybox.html());//insert facybox to dom

    //if we did not autoload, so the user has just clicked the facybox and pre-loading is useless
    if(! $.facybox.settings.noAutoload)preloadImages();
    $('#facybox .close').click($.facybox.close);
  }

  //preloads all the static facybox images
  function preloadImages(){
    //TODO preload prev/next ?
    $('#facybox').find('.b:first, .loading, .close , .bl, .br, .tl, .tr').each(function() {
      var img = new Image();
      img.src = $(this).css('background-image').replace(/url\((.+)\)/, '$1');
    })
  }

  function makeBackwardsCompatible() {
    var $s = $.facybox.settings;
    $s.imageTypes = $s.image_types || $s.imageTypes;
    $s.facyboxHtml = $s.facybox_html || $s.facyboxHtml;
  }

  // Figures out what you want to display and displays it
  // formats are:
  //     div: #id
  //   image: blah.extension
  //    ajax: anything else
  function revealHref(href) {
    // div
    if(href.match(/#/)) {
      var url    = window.location.href.split('#')[0];
      var target = href.replace(url,'');
      if (target == '#') return
      $.facybox.reveal($(target).html(), $.facybox.content_klass);
    // image
    } else if(href.match($.facybox.settings.imageTypesRegexp)) {
      revealImage(href);
    // ajax
    } else { revealAjax(href)}
  }

  function revealGallery(hrefs, initial) {
    //initial position
    var position=$.inArray(initial||0,hrefs);
    if (position == -1) {
		position = 0;
	}
	
    //build navigation and ensure it will be removed
	/* Commented by NSS 
	if (hrefs.length > 1) {
		var navHtml = ['<div class="navigation"><a class="prev">&laquo; prev</a> '];
		for (var i = 0, l = hrefs.length; i < l; i++) {
			navHtml.push('<a class="page" rel="', i, '">', i + 1, '</a> ');
		}
		navHtml.push('<a class="next">next &raquo;</a></div>');
		$('#facybox div.above-content').append($(navHtml.join('')));
		var $nav = $('#facybox .navigation');
		$(document).bind('afterClose.facybox', function(){
			$nav.remove()
		});
	} Commented by NSS */
    function change_image(diff){
      position = (position + diff + hrefs.length) % hrefs.length;
      replaceImage(hrefs[position], function(){
	  	$('a.current', $nav).removeClass('current');
	    $('a[rel="'+position+'"]', $nav).addClass('current');
	  });
      //$nav.find('.counter').html(position+1+" / "+hrefs.length);
    }
	
	function set_image(diff) {
	  position = (position + diff + hrefs.length) % hrefs.length;
      revealImage(hrefs[position]);
	  $('a[rel="'+position+'"]', $nav).addClass('current');
      //$nav.find('.counter').html(position+1+" / "+hrefs.length);
	}
	//Removed by NSS: set_image(0);
	//Added by NSS
	var srcs = "";
	$.facybox.loading();
    for (var pos = 0; pos <  hrefs.length; pos++) {
		srcs += '<div class="image"><img src="' + hrefs[pos] + '" /><br/><br/></div>';
	}
	$.facybox.reveal(srcs, $.facybox.content_klass)
	//End Added by NSS
	/*   COMMENTED BY NSS 
	if (hrefs.length > 1) {
		//bind events
		$('a.prev', $nav).click(function(ev){
			ev.preventDefault();
			change_image(-1);
			return false;
		});
		$('a.next', $nav).click(function(ev){
			ev.preventDefault();
			change_image(1);
			return false;
		});
		$('a.page', $nav).click(function(ev){
			ev.preventDefault();
			var newPos = parseInt($(this).attr('rel'));
			change_image(newPos - position);
			return false;
		});
	}
    $(document).bind('keydown.facybox', function(e) {
      if(e.keyCode == 39)change_image(1);  // right
      if(e.keyCode == 37)change_image(-1); // left
    });  COMMENTED BY NSS */
  }

  function revealImage(href){
    $('#facybox .content').empty();
    $.facybox.loading();//TODO loading must be shown until image is loaded -> stopLoading() on onload
    var image = new Image();
    image.onload = function() {
      //modified by NSS
      //old: $.facybox.reveal('<div class="image"><img src="' + image.src + '" /></div>', $.facybox.content_klass)
      $.facybox.reveal('<div class="image"><img src="' + image.src + '" /><br/><br/></div>', $.facybox.content_klass)
    }
    image.src = href;
  }
  
  function replaceImage(href, cb){
  	$('#facybox').fadeOut('fast',function(){
		revealImage(href);
		if (cb) {
			cb();
		}
	});
  	
  }

  //TODO loading until content arrives
  function revealAjax(href) {
    $.get(href, function(data) { $.facybox.reveal(data) });
  }

  function skipOverlay() {
    return $.facybox.settings.overlay == false || $.facybox.settings.opacity === null
  }

  function showOverlay() {
    if(skipOverlay()) return;

    if($('#facybox_overlay').length == 0){
      $("body").append('<div id="facybox_overlay" class="facybox_hide"></div>');
    }

    $('#facybox_overlay').hide().addClass("facybox_overlayBG")
      .css('opacity', $.facybox.settings.opacity)
      .fadeIn(200);
    if(!$.facybox.settings.modal){
      $('#facybox_overlay').click(function(){ $(document).trigger('close.facybox')})
    }
  }

  function hideOverlay() {
    if(skipOverlay()) return;

    $('#facybox_overlay').fadeOut(200, function(){
      $("#facybox_overlay").removeClass("facybox_overlayBG").
        addClass("facybox_hide").
        remove();
    })
  }

  /*
   * Bindings
   */

  $(document).bind('close.facybox', function() {
    $(document).unbind('keydown.facybox');
    $('#facybox').fadeOut(function() {
      $('#facybox .content').removeClass().addClass('content');//revert changing class
      hideOverlay();
      $('#facybox .loading').remove();
    })
    $(document).trigger('afterClose.facybox');
  });

})(jQuery);