Index: branches/5.2.x/core/units/logs/change_logs/change_log_eh.php
===================================================================
diff -u -N -r14244 -r14639
--- branches/5.2.x/core/units/logs/change_logs/change_log_eh.php	(.../change_log_eh.php)	(revision 14244)
+++ branches/5.2.x/core/units/logs/change_logs/change_log_eh.php	(.../change_log_eh.php)	(revision 14639)
@@ -1,22 +1,61 @@
 <?php
+/**
+* @version	$Id: change_log_eh.php 14639 2011-10-05 14:17:02Z alex $
+* @package	In-Portal
+* @copyright	Copyright (C) 1997 - 2011 Intechnic. All rights reserved.
+* @license      GNU/GPL
+* In-Portal is Open Source software.
+* This means that this software may have been modified pursuant
+* the GNU General Public License, and as distributed it includes
+* or is derivative of works licensed under the GNU General Public License
+* or other free or open source software licenses.
+* See http://www.in-portal.org/license for copyright notices and details.
+*/
 
-	class ChangeLogEventHandler extends kDBEventHandler {
+defined('FULL_PATH') or die('restricted access!');
 
-		/**
-		 * Updates affected record count in session, when change log record is deleted
-		 *
-		 * @param kEvent $event
-		 */
-		function OnAfterItemDelete(&$event)
-		{
-			parent::OnAfterItemDelete($event);
+class ChangeLogEventHandler extends kDBEventHandler {
 
-			$object =& $event->getObject();
-			/* @var $object kDBItem */
+	/**
+	 * Allows to override standard permission mapping
+	 *
+	 */
+	function mapPermissions()
+	{
+		parent::mapPermissions();
 
-			$sql = 'UPDATE ' . $this->Application->getUnitOption('session-log', 'TableName') . '
-					SET AffectedItems = AffectedItems - 1
-					WHERE SessionLogId = ' . $object->GetDBField('SessionLogId');
-			$this->Conn->Query($sql);
-		}
-	}
\ No newline at end of file
+		$permissions = Array (
+			'OnEnableLog' => Array ('self' => 'view'),
+		);
+
+		$this->permMapping = array_merge($this->permMapping, $permissions);
+	}
+
+	/**
+	 * Updates affected record count in session, when change log record is deleted
+	 *
+	 * @param kEvent $event
+	 */
+	function OnAfterItemDelete(&$event)
+	{
+		parent::OnAfterItemDelete($event);
+
+		$object =& $event->getObject();
+		/* @var $object kDBItem */
+
+		$sql = 'UPDATE ' . $this->Application->getUnitOption('session-log', 'TableName') . '
+				SET AffectedItems = AffectedItems - 1
+				WHERE SessionLogId = ' . $object->GetDBField('SessionLogId');
+		$this->Conn->Query($sql);
+	}
+
+	/**
+	 * Changes configuration value to enable log writing
+	 *
+	 * @param kEvent $event
+	 */
+	function OnEnableLog(&$event)
+	{
+		$this->Application->SetConfigValue('UseChangeLog', 1);
+	}
+}
\ No newline at end of file