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/*

 * 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 : '/static/images/loading.gif',

      closeImage   : '/static/images/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="/static/images/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);