/*

 * 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 : 'facefiles/loading.gif',

    close_image   : '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()

    })

  }



  $.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)

  }



  // 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);