/**
 * jQuery plugin for posting form including file inputs.
 * 
 * Copyright (c) 2010 - 2011 Ewen Elder
 *
 * Licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 * @author: Ewen Elder <ewen at jainaewen dot com> <glomainn at yahoo dot co dot uk>
 * @version: 1.1.1 (2011-07-29)
**/
(function ($)
{
  $.fn.iframePostForm = function (options)
  {
    var response,
      returnReponse,
      element,
      status = true,
      iframe;
    
    options = $.extend({}, $.fn.iframePostForm.defaults, options);
    
    
    // Add the iframe.
    if (!$('#' + options.iframeID).length)
    {
      $('body').append('<iframe id="' + options.iframeID + '" name="' + options.iframeID + '" style="display:none" />');
    }
    
    
    return $(this).each(function ()
    {
      element = $(this);
      
      
      // Target the iframe.
      element.attr('target', options.iframeID);
      
      
      // Submit listener.
      element.submit(function ()
      {
        // If status is false then abort.
        status = options.post.apply(this);
        
        if (status === false)
        {
          return status;
        }
        
        
        iframe = $('#' + options.iframeID).load(function ()
        {
          response = iframe.contents().find('body');


          if (options.json)
          {
            returnReponse = $.parseJSON(response.html());
          }
          
          else
          {
            returnReponse = response.html();
          }
          
          
          options.complete.apply(this, [returnReponse]);

          iframe.unbind('load');
          

          setTimeout(function ()
          {
            response.html('');
          }, 1);
        });
      });
    });
  };
  
  
  $.fn.iframePostForm.defaults =
  {
    iframeID : 'iframe-post-form',       // Iframe ID.
    json : false,                        // Parse server response as a json object.
    post : function () {},               // Form onsubmit.
    complete : function (response) {}    // After response from the server has been received.
  };
})(jQuery);