/*
 * Facebox (for jQuery)
 * version: 1.1 (03/01/2008)
 * @requires jQuery v1.2 or later
 *
 * Examples at http://famspam.com/facebox/
 *
 * Licensed under the MIT:
 *   http://www.opensource.org/licenses/mit-license.php
 *
 * Copyright 2007, 2008 Chris Wanstrath [ chris@ozmm.org ]
 *
 * Usage:
 *
 *  jQuery(document).ready(function() {
 *    jQuery('a[rel*=facebox]').facebox()
 *  })
 *
 *  <a href="#terms" rel="facebox">Terms</a>
 *    Loads the #terms div in the box
 *
 *  <a href="terms.html" rel="facebox">Terms</a>
 *    Loads the terms.html page in the box
 *
 *  <a href="terms.png" rel="facebox">Terms</a>
 *    Loads the terms.png image in the box
 *
 *
 *  You can also use it programmatically:
 *
 *    jQuery.facebox('some html')
 *
 *  This will open a facebox with "some html" as the content.
 *
 *    jQuery.facebox(function() { ajaxes })
 *
 *  This will show a loading screen before the passed function is called,
 *  allowing for a better ajax experience.
 *
 */
(function($) {
  $.facebox = function(data, klass) {
    $.facebox.init();
    $.facebox.loading();
    $.isFunction(data) ? data.call($) : $.facebox.reveal(data, klass);
  };

  $.facebox.settings = {
    loading_image : 'images/facefiles/loading.gif',
    close_image   : 'images/facefiles/closelabel.gif',
    image_types   : [ 'png', 'jpg', 'jpeg', 'gif' ],
    facebox_html  : '\
  <div id="facebox" style="display:none;"> \
    <div class="popup"> \
      <table> \
        <tbody> \
          <tr> \
            <td class="tl"/><td class="b"/><td class="tr"/> \
          </tr> \
          <tr> \
            <td class="b"/> \
            <td class="body"> \
              <div class="content"> \
              </div> \
              <div class="footer"> \
                <a href="#" class="close" > \
                  <img src="'+this.close_image+'" title="close" class="close_image" /> \
                </a> \
              </div> \
            </td> \
            <td class="b"/> \
          </tr> \
          <tr> \
            <td class="bl"/><td class="b"/><td class="br"/> \
          </tr> \
        </tbody> \
      </table> \
    </div> \
  </div>'
  };

  $.facebox.loading = function() {
    if ($('#facebox .loading').length == 1) return true;

    $('#facebox .content').empty();
    $('#facebox .body').children().hide().end().
      append('<div class="loading"><img src="'+$.facebox.settings.loading_image+'"/></div>');

    var pageScroll = $.facebox.getPageScroll()
    $('#facebox').css({
      top:	pageScroll[1] + ($.facebox.getPageHeight() / 10),
      left:	pageScroll[0]
    }).show();

    $(document).bind('keydown.facebox', function(e) {
      if (e.keyCode == 27) $.facebox.close();
    });

    return true;
  };

  $.facebox.reveal = function(data, klass) {
    if (klass) $('#facebox .content').addClass(klass);

    $('#facebox .content').append(data);
    $('#facebox .loading').remove();
    $('#facebox .body').children().fadeIn('normal');
  };

  $.facebox.close = function() {
    $(document).trigger('close.facebox');
    return false;
  };

  $(document).bind('close.facebox', function() {
    $(document).unbind('keydown.facebox');
    $('#facebox').fadeOut(function() {
      $('#facebox .content').removeClass().addClass('content');
    });
  });

  $.fn.facebox = function(settings) {
    $.facebox.init(settings);

    var image_types = $.facebox.settings.image_types.join('|');
    image_types = new RegExp('\.' + image_types + '$', 'i');

    function click_handler() {
      $.facebox.loading(true);

      // support for rel="facebox[.inline_popup]" syntax, to add a class
      var klass = this.rel.match(/facebox\[\.(\w+)\]/);
      if (klass) klass = klass[1];

      // div
      if (this.href.match(/#/)) {
        var url    = window.location.href.split('#')[0];
        var target = this.href.replace(url,'');
        $.facebox.reveal($(target).clone().show(), klass);

      // image
      } else if (this.href.match(image_types)) {
        var image = new Image()
        image.onload = function() {
          $.facebox.reveal('<div class="image"><img src="' + image.src + '" /></div>', klass)
        }
        image.src = this.href;

      // ajax
      } else {
        $.get(this.href, function(data) { $.facebox.reveal(data, klass) });
      }

      return false;
    }

    this.click(click_handler);
    return this;
  };

  $.facebox.init = function(settings) {
    if ($.facebox.settings.inited) {
      return true;
    } else {
      $.facebox.settings.inited = true;
    }

    if (settings) $.extend($.facebox.settings, settings);
    $('body').append($.facebox.settings.facebox_html);

    var preload = [ new Image(), new Image() ];
    preload[0].src = $.facebox.settings.close_image;
    preload[1].src = $.facebox.settings.loading_image;

    $('#facebox').find('.b:first, .bl, .br, .tl, .tr').each(function() {
      preload.push(new Image());
      preload.slice(-1).src = $(this).css('background-image').replace(/url\((.+)\)/, '$1');
    });

    $('#facebox .close').click($.facebox.close);
    $('#facebox .close_image').attr('src', $.facebox.settings.close_image);

    return true;
  };

  // getPageScroll() by quirksmode.com
  $.facebox.getPageScroll = function() {
    var xScroll, yScroll;
    if (self.pageYOffset) {
      yScroll = self.pageYOffset;
      xScroll = self.pageXOffset;
    } else if (document.documentElement && document.documentElement.scrollTop) {	 // Explorer 6 Strict
      yScroll = document.documentElement.scrollTop;
      xScroll = document.documentElement.scrollLeft;
    } else if (document.body) {// all other Explorers
      yScroll = document.body.scrollTop;
      xScroll = document.body.scrollLeft;
    }
    return new Array(xScroll,yScroll);
  };

  // adapter from getPageSize() by quirksmode.com
  $.facebox.getPageHeight = function() {
    var windowHeight;
    if (self.innerHeight) {	// all except Explorer
      windowHeight = self.innerHeight;
    } else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
      windowHeight = document.documentElement.clientHeight;
    } else if (document.body) { // other Explorers
      windowHeight = document.body.clientHeight;
    }
    return windowHeight;
  };
})(jQuery);