Cart work for payments and Paypal work to test

modules/checkout/classes/Checkout/Plugin.php

@@ -0,0 +1,35 @@
+<?php defined('SYSPATH') or die('No direct access allowed.');
+
+/**
+ * This class provides CHECKOUT Plugin Support
+ *
+ * @package    OSB
+ * @subpackage Checkout Plugins
+ * @category   Plugins
+ * @author     Deon George
+ * @copyright  (c) 2010 Deon George
+ * @license    http://dev.leenooks.net/license.html
+ * @todo Does this need to be Serializable?
+ */
+abstract class Checkout_Plugin implements Serializable {
+	protected $co; // Our Checkout Object
+	protected $_object;
+
+        // Our required abstract classes
+	public function serialize() {
+		return (string)$this->_object;
+	}
+	public function unserialize($s) {
+		$this->_object = XML::factory(NULL,NULL,$s);
+	}
+
+	// Required abstract classes
+	// Present pre-plugin processing information
+	abstract public function before(Cart $co);
+	abstract public function notify(Model_Checkout_Notify $cno);
+
+	public function __construct(Model_Checkout $co) {
+		$this->co = $co;
+	}
+}
+?>