/*

* Facebox (for jQuery)
* version: 1.2 (05/05/2008)
* @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')
*    jQuery.facebox('some html', 'my-groovy-style')
*
*  The above will open a facebox with "some html" as the content.
*
*    jQuery.facebox(function($) {
*      $.get('blah.html', function(data) { $.facebox(data) })
*    })
*
*  The above will show a loading screen before the passed function is called,
*  allowing for a better ajaxy experience.
*
*  The facebox function can also display an ajax page, an image, or the contents of a div:
*
*    jQuery.facebox({ ajax: 'remote.html' })
*    jQuery.facebox({ ajax: 'remote.html' }, 'my-groovy-style')
*    jQuery.facebox({ image: 'stairs.jpg' })
*    jQuery.facebox({ image: 'stairs.jpg' }, 'my-groovy-style')
*    jQuery.facebox({ div: '#box' })
*    jQuery.facebox({ div: '#box' }, 'my-groovy-style')
*
*  Want to close the facebox?  Trigger the 'close.facebox' document event:
*
*    jQuery(document).trigger('close.facebox')
*
*  Facebox also has a bunch of other hooks:
*
*    loading.facebox
*    beforeReveal.facebox
*    reveal.facebox (aliased as 'afterReveal.facebox')
*    init.facebox
*    afterClose.facebox
*
*  Simply bind a function to any of these hooks:
*
*   $(document).bind('reveal.facebox', function() { ...stuff to do after the facebox and contents are revealed... })
*
*/

(function($) {

$.facebox = function(data, klass) {
  $.facebox.loading()

  if (data.ajax) fillFaceboxFromAjax(data.ajax, klass)
  else if (data.image) fillFaceboxFromImage(data.image, klass)
  else if (data.div) fillFaceboxFromHref(data.div, klass)
  else if ($.isFunction(data)) data.call($)
  else $.facebox.reveal(data, klass)
}

/*
 * Public, $.facebox methods
 */

$.extend($.facebox, {
  settings: {
    opacity      : 0.2,
    overlay      : true,
    loadingImage : '/img/facebox/loading.gif',
    closeImage   : '/img/facebox/closelabel.png',
    imageTypes   : [ 'png', 'jpg', 'jpeg', 'gif' ],
    faceboxHtml  : '\
  <div id="facebox" style="display:none;"> \
    <div class="popup"> \
      <div class="content"> \
      </div> \
      <a href="#" class="close"><img src="/img/facebox/closelabel.png" title="close" class="close_image" /></a> \
    </div> \
  </div>'
  },

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

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

    $('#facebox').css({
      top:    getPageScroll()[1] + (getPageHeight() / 10),
      left:   $(window).width() / 2 - 205
    }).show()

    $(document).bind('keydown.facebox', function(e) {
      if (e.keyCode == 27) $.facebox.close()
      return true
    })
    $(document).trigger('loading.facebox')
  },

  reveal: function(data, klass) {
    $(document).trigger('beforeReveal.facebox')
    if (klass) $('#facebox .content').addClass(klass)
    $('#facebox .content').append(data)
    $('#facebox .loading').remove()
    $('#facebox .body').children().fadeIn('normal')
    $('#facebox').css('left', $(window).width() / 2 - ($('#facebox .popup').width() / 2))
    $(document).trigger('reveal.facebox').trigger('afterReveal.facebox')
  },

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

/*
 * Public, $.fn methods
 */

$.fn.facebox = function(settings) {
  if ($(this).length == 0) return

  init(settings)

  function clickHandler() {
    $.facebox.loading(true)

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

    fillFaceboxFromHref(this.href, klass)
    return false
  }

  return this.bind('click.facebox', clickHandler)
}

/*
 * Private methods
 */

// called one time to setup facebox on this page
function init(settings) {
  if ($.facebox.settings.inited) return true
  else $.facebox.settings.inited = true

  $(document).trigger('init.facebox')
  makeCompatible()

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

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

  var preload = [ new Image(), new Image() ]
  preload[0].src = $.facebox.settings.closeImage
  preload[1].src = $.facebox.settings.loadingImage

  $('#facebox').find('.b:first, .bl').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.closeImage)
}

// getPageScroll() by quirksmode.com
function getPageScroll() {
  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)
}

// Adapted from getPageSize() by quirksmode.com
function getPageHeight() {
  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
}

// Backwards compatibility
function makeCompatible() {
  var $s = $.facebox.settings

  $s.loadingImage = $s.loading_image || $s.loadingImage
  $s.closeImage = $s.close_image || $s.closeImage
  $s.imageTypes = $s.image_types || $s.imageTypes
  $s.faceboxHtml = $s.facebox_html || $s.faceboxHtml
}

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

  // image
  } else if (href.match($.facebox.settings.imageTypesRegexp)) {
    fillFaceboxFromImage(href, klass)
  // ajax
  } else {
    fillFaceboxFromAjax(href, klass)
  }
}

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

function fillFaceboxFromAjax(href, klass) {
  $.get(href, function(data) { $.facebox.reveal(data, klass) })
}

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

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

  if ($('#facebox_overlay').length == 0)
    $("body").append('<div id="facebox_overlay" class="facebox_hide"></div>')

  $('#facebox_overlay').hide().addClass("facebox_overlayBG")
    .css('opacity', $.facebox.settings.opacity)
    .click(function() { $(document).trigger('close.facebox') })
    .fadeIn(200)
  return false
}

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

  $('#facebox_overlay').fadeOut(200, function(){
    $("#facebox_overlay").removeClass("facebox_overlayBG")
    $("#facebox_overlay").addClass("facebox_hide")
    $("#facebox_overlay").remove()
  })

  return false
}

/*
 * Bindings
 */

$(document).bind('close.facebox', function() {
  $(document).unbind('keydown.facebox')
  $('#facebox').fadeOut(function() {
    $('#facebox .content').removeClass().addClass('content')
    $('#facebox .loading').remove()
    $(document).trigger('afterClose.facebox')
  })
  hideOverlay()
})

})(jQuery);