Index: t3lib/class.t3lib_tcemain.php
===================================================================
--- t3lib/class.t3lib_tcemain.php	(revision 5105)
+++ t3lib/class.t3lib_tcemain.php	(working copy)
@@ -361,6 +361,7 @@
 	var $autoVersioningUpdate = FALSE;			// A signal flag used to tell file processing that autoversioning has happend and hence certain action should be applied.
 
 	protected $disableDeleteClause = false;		// Disable delete clause
+    protected $hookObjects = array();			// array containing instances of hook classes
 
 
 
@@ -416,9 +416,36 @@
 			reset($cmd);
 			$this->cmdmap = $cmd;
 		}
+		
+		$this->initHookObjects();
 	}
 
 	/**
+	 * Initialized the hook objects for this class.
+	 * Each hook object has to implement the interface t3lib_tcemainHook.
+	 *
+	 * @return	void
+	 */
+	protected function initHookObjects() {
+		$this->hookObjects = array();
+		if (isset($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_tceforms_inline.php']['tcemainHook'])) {
+			$tcemainHook =& $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_tceforms_inline.php']['tcemainHook'];
+			if (is_array($tcemainHook)) {
+				foreach($tcemainHook as $classData) {
+					$processObject = &t3lib_div::getUserObj($classData);
+
+					if(!($processObject instanceof t3lib_tcemainHook)) {
+						throw new UnexpectedValueException('$processObject must implement interface t3lib_tcemainHook', 1235863561);
+					}
+
+					$processObject->init($this);
+					$this->hookObjects[] = $processObject;
+				}
+			}
+		}
+	}
+	
+	/**
 	 * Function that can mirror input values in datamap-array to other uid numbers.
 	 * Example: $mirror[table][11] = '22,33' will look for content in $this->datamap[table][11] and copy it to $this->datamap[table][22] and $this->datamap[table][33]
 	 *
@@ -4609,6 +4637,11 @@
 											}
 										}
 
+										// Hook: versionSwap_postProcess
+										foreach ($this->hookObjects as $hookObj)	{
+											$hookObj->versionSwap_postProcess($table, $id, $swapWith, $swapIntoWS);
+										}
+										
 										if (!count($sqlErrors))	{
 
 												// If a moving operation took place...:
Index: t3lib/interfaces/interface.t3lib_tcemainhook.php
===================================================================
--- t3lib/interfaces/interface.t3lib_tcemainhook.php	(revision 0)
+++ t3lib/interfaces/interface.t3lib_tcemainhook.php	(revision 0)
@@ -0,0 +1,59 @@
+<?php
+/***************************************************************
+ * Copyright notice
+ *
+ * (c) 2009 Steffen Kamper <info@sk-typo3.de>
+ * All rights reserved
+ *
+ * This script is part of the TYPO3 project. The TYPO3 project 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.
+ *
+ * The GNU General Public License can be found at
+ * http://www.gnu.org/copyleft/gpl.html.
+ * A copy is found in the textfile GPL.txt and important notices to the license
+ * from the author is found in LICENSE.txt distributed with these scripts.
+ *
+ *
+ * This script 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.
+ *
+ * This copyright notice MUST APPEAR in all copies of the script!
+ ***************************************************************/
+
+/**
+ * Interface for classes which hook into t3lib_TCEmain.
+ *
+ * $Id: interface.interface.t3lib_tcemainhook.php
+ *
+ * @author		Steffen Kamper <info@sk-typo3.de>
+ * @package 	TYPO3
+ * @subpackage	t3lib
+ */
+interface t3lib_tcemainHook {
+    /**
+	 * Initializes this hook object.
+	 *
+	 * @param	t3lib_TCEmain		$parentObject: The calling t3lib_TCEmain object.
+	 * @return	void
+	 */
+	public function init(&$parentObject);
+	
+	/**
+	 * Post-processing of versionSwap.
+	 *
+	 * @param	string		Table name
+	 * @param	integer		UID of the online record to swap
+	 * @param	integer		UID of the archived version to swap with!
+	 * @param	boolean		If set, swaps online into workspace instead of publishing out of workspace.
+	 * @return	void
+	 */
+	public function versionSwap_postProcess($table, $id, $swapWith, $swapIntoWS);
+
+	
+}
+?>
\ No newline at end of file