/*
 * 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')
 *
 *	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 or image:
 *
 *	  jQuery.facebox({ ajax: 'remote.html' })
 *	  jQuery.facebox({ image: 'dude.jpg' })
 *
 *	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
 *
 *	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)
	else if (data.image) fillFaceboxFromImage(data.image)
	else if (data.div) fillFaceboxFromHref(data.div)
	else if ($.isFunction(data)) data.call($)
	else $.facebox.reveal(data, klass)
  }

  /*
   * Public, $.facebox methods
   */

  $.extend($.facebox, {
	settings: {
	  opacity	   : 0.8,
	  overlay	   : true,
	  loadingImage : '/facebox/loading.gif',
	  closeImage   : '/facebox/closelabel.gif',
	  imageTypes   : [ 'png', 'jpg', 'jpeg', 'gif' ],
	  faceboxHtml  : '\
	<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="footer"> \
				  <a href="#" class="close"> \
					<img src="/facebox/closelabel.gif" title="close" class="close_image" /> \
				  </a> \
				</div> \
			  <div class="content"> \
				</div> \
			  </td> \
			  <td class="b"/> \
			</tr> \
			<tr> \
			  <td class="bl"/><td class="b"/><td class="br"/> \
			</tr> \
		  </tbody> \
		</table> \
	  </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:	385.5
	  }).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 table').width() / 2))
	  $(document).trigger('reveal.facebox').trigger('afterReveal.facebox')
	},

	close: function() {
	  $(document).trigger('close.facebox')
	  window.location.reload(); // reload the window 
	  return false
	}
  })

  /*
   * Public, $.fn methods
   */

  $.fn.facebox = function(settings) {
	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.click(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, .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.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,'')
	  $.facebox.reveal($(target).clone().show(), 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')
	  hideOverlay()
	  $('#facebox .loading').remove()
	})
  })

})(jQuery);