/**
 * 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);