paygate.php

<?php
/*
Plugin Name: Gravity Forms PayGate Add-On
Plugin URI: http://www.gravityforms.com
Description: Integrates Gravity Forms with PayGate, a South African payment gateway.
Version: 1.0.0
Author: PayGate
Author URI: http://www.paygate.co.za
Text Domain: gravityformspaygate
Domain Path: /languages

------------------------------------------------------------------------
Copyright 2009-2015 PayGate

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/

add_action( 'gform_loaded', array( 'GF_PayGate_Bootstrap', 'load' ), 5 );

class GF_PayGate_Bootstrap
{
	public static function load()
    {
		if ( !method_exists( 'GFForms', 'include_payment_addon_framework' ) )
        {
			return;
		}

		require_once( 'paygate_gf_class.php' );

		GFAddOn::register( 'PayGateGF' );
	}
}

function gf_paygate()
{
	return PayGateGF::get_instance();
}