/*
* Facebox (for jQuery)
* version: 1.3 (26/11/2009)
* @requires jQuery v1.2 or later
*
* Licensed under the MIT:
* http://www.opensource.org/licenses/mit-license.php
*
* Copyright 2007, 2008 Chris Wanstrath [ chris@ozmm.org ]
* Updated by Kevin McPhillips
* http://github.com/kimos/facebox
*
* 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
*
* 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.iframe) fillFaceboxFromIFrame(data.iframe, klass)
    else 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,
      overlay : true,
      positionInfo : function(position, total) { return position + ' of ' + total },
      loadingImage : '/facebox/loading.gif',
      closeImage : '/facebox/closelabel.gif',
      nextImage : '/facebox/next.png',
      previousImage : '/facebox/prev.png',
      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="content"> \
</div> \
<div class="footer"> \
<table> \
<tr> \
<td class="tableLeft"><div class="navigation"></div></td> \
<td class="tableCenter"><div class="info"></div></td> \
<td class="tableRight"><a href="#" class="close"><img src="" title="close" alt="Close" class="close_image" /></a></td> \
</tr> \
</table> \
</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() / 20),
        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 .info').empty()
      $('#facebox .navigation').empty()
      $('#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')
      return false
    }
  })

  /*
* Public, $.fn methods
*/

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

    // suck out the images
    var images = []
    $(this).each(function() {
      if (this.href.match($.facebox.settings.imageTypesRegexp) && $.inArray(this.href, images) == -1)
        images.push(this.href)
    })
    if (images.length == 1) images = null

    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]

      if (settings && settings.iframe) fillFaceboxFromIFrame(settings.iframe, klass)

      fillFaceboxFromHref(this.href, klass, images)
      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('|')
    $.facebox.settings.imageTypesRegexp = new RegExp("\\.(" + imageTypes + ")(\\?[\\d]+)?$", '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, images) {
    // div
    if (href.match(/#/)) {
      var url = window.location.href.split('#')[0]
      var target = href.replace(url,'')
      $.facebox.reveal($(target).show().replaceWith("<div id='facebox_moved'></div>"), klass)

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

  function fillFaceboxFromImage(href, klass, images) {
    var image = new Image()
    image.onload = function() {
      $.facebox.reveal('<div class="image"><img src="' + image.src + '" /></div>', klass)
      if (images) {
        faceboxSetupGallery(href, klass, images)
        var position = $.inArray(href, images)
        var next = new Image()
        next.src = images[position+1] ? images[position+1] : images[0]
      }
    }
    image.src = href
  }

  function fillFaceboxFromIFrame(data, klass) {
    var iframe = '<iframe src="' + data.href + '"'
    if (data.klass)
        iframe += ' class="' + data.klass + '"'
    else
        iframe += ' class="facebox_iframe"'
    iframe += ' />'
    $.facebox.reveal(iframe, klass)
  }

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

  function faceboxSetupGallery(href, klass, images) {
    var position = $.inArray(href, images)

    var jump = function(where) {
      $.facebox.loading()
      if (where >= images.length) where = 0
      if (where < 0) where = images.length - 1
      fillFaceboxFromHref(images[where], klass, images)
    }
    
    $('#facebox .image').click(function() { jump(position + 1) }).css('cursor', 'pointer');
    $('#facebox .info').html($.facebox.settings.positionInfo(position + 1, images.length));
    $('#facebox .navigation')
      .html('<img class="prev" src="' + $.facebox.settings.previousImage + '" alt="Previous"/><img class="next" src="' + $.facebox.settings.nextImage + '" alt="Next"/>')
      .find('img').css('cursor', 'pointer').end().find('.prev').click(function() { jump(position - 1); return false })
      .end().find('.next').click(function() { jump(position + 1); return false }).end();
  }

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

  function showOverlay() {
    // IE 6 is so totally balls that SELECT elements are always in the foreground. Hide them on loading.
    if ( $.browser.msie && /6.0/.test(navigator.userAgent) )
      $("select").hide();

    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() {
    // Undo IE 6 hack.
    if ( $.browser.msie && /6.0/.test(navigator.userAgent) )
      $("select").show();

    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')
    $('#facebox').fadeOut(function() {
      if ($('#facebox_moved').length == 0) $('#facebox .content').removeClass().addClass('content')
      else $('#facebox_moved').replaceWith($('#facebox .content').children().hide())
      hideOverlay()
      $('#facebox .loading').remove()
    })
  })

})(jQuery);