/*
 * Facebox (for jQuery)
 * version: 1.2 (05/05/2008)
 * @requires jQuery v1.2.3 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 ]
 *
 * Augmented for WordPress by Daniel Stockman [ daniel.stockman@gmail.com ]
**/
(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,
      overlay      : true,
      loadingImage : '/facebox/images/loading.gif',
      closeImage   : '/facebox/images/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="content"> \
                </div> \
                <div class="footer"> \
                  <a href="#" class="close"> \
                    <img src="@REPLACE_ME@" 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>'
    },

    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 table').width() / 2));
      var top_delta = (($(window).height() / 2) - ($('#facebox table').height() / 2)) + getPageScroll()[1];
      $('#facebox').css('top', (top_delta < 0) ? 0 : top_delta);
      $(document).trigger('reveal.facebox').trigger('afterReveal.facebox');
    },

    close: function() {
      $(document).trigger('close.facebox');
      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');

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

    if (settings) $.extend($.facebox.settings, settings);
	// modify closelabel path before appending to DOM to avoid potentially missing resource
    $('body').append($.facebox.settings.faceboxHtml.replace(/@REPLACE_ME@/, $.facebox.settings.closeImage));

    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);
  }

  // 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;
  }

  // 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);