Index: trunk/core/units/general/cat_event_handler.php
===================================================================
diff -u -N -r8420 -r8422
--- trunk/core/units/general/cat_event_handler.php	(.../cat_event_handler.php)	(revision 8420)
+++ trunk/core/units/general/cat_event_handler.php	(.../cat_event_handler.php)	(revision 8422)
@@ -1822,7 +1822,71 @@
 	 */
 	function OnUpdate(&$event)
 	{
-		parent::OnUpdate($event);
+		$use_pending_editing = $this->Application->getUnitOption($event->Prefix, 'UsePendingEditing');
+		if ($this->Application->IsAdmin() || !$use_pending_editing) {
+			parent::OnUpdate($event);
+			return ;
+		}
+
+		$object =& $event->getObject(Array('skip_autoload' => true));
+		/* @var $object kCatDBItem */
+
+		$items_info = $this->Application->GetVar($event->getPrefixSpecial(true));
+		if ($items_info) {
+			$perm_helper =& $this->Application->recallObject('PermissionsHelper');
+			/* @var $perm_helper kPermissionsHelper */
+
+			$temp_handler =& $this->Application->recallObject($event->getPrefixSpecial().'_TempHandler', 'kTempTablesHandler');
+			/* @var $temp_handler kTempTablesHandler */
+
+			foreach ($items_info as $id => $field_values) {
+				$object->Load($id);
+ 				$object->SetFieldsFromHash($field_values);
+
+ 				if ($use_pending_editing && !$object->GetDBField('OrgId')) {
+					// PENDING EDITING enabled & not previously edited -> clone item & change cloned item instead
+					if ($perm_helper->ModifyCheckPermission($object->GetDBField('CreatedById'), $object->GetDBField('CategoryId'), $event->Prefix) == 2) {
+						// 1. clone original item
+						$cloned_ids = $temp_handler->CloneItems($event->Prefix, $event->Special, Array($object->GetID()), null, null, null, true);
+
+						$original_id = $object->GetID();
+						$original_resource_id = $object->GetDBField('ResourceId');
+						$ci_table = $this->Application->getUnitOption('ci', 'TableName');
+
+						// 2. apply all operations to cloned item
+						$object->Load($cloned_ids[0]);
+						$object->SetFieldsFromHash($field_values);
+
+						// 2. delete record from CategoryItems (about cloned item) that was automatically created during call of Create method of kCatDBItem
+						$sql = 'DELETE FROM '.$ci_table.'
+								WHERE ItemResourceId = '.$object->GetDBField('ResourceId').' AND PrimaryCat = 1';
+						$this->Conn->Query($sql);
+
+						// 3. copy main item categoryitems to cloned item
+						$sql = 'INSERT INTO '.$ci_table.' (CategoryId, ItemResourceId, PrimaryCat, ItemPrefix, Filename)
+								SELECT CategoryId, '.$object->GetDBField('ResourceId').' AS ItemResourceId, PrimaryCat, ItemPrefix, Filename
+								FROM '.$ci_table.'
+								WHERE ItemResourceId = '.$original_resource_id;
+						$this->Conn->Query($sql);
+
+						// 4. put cloned id to OrgId field of item being cloned
+						$object->SetDBField('Status', STATUS_PENDING_EDITING);
+						$object->SetDBField('OrgId', $original_id);
+						$this->Application->SetVar($event->getPrefixSpecial().'_id', $object->GetID());
+					}
+ 				}
+
+				if ($object->Update()) {
+					$event->status = erSUCCESS;
+				}
+				else {
+					$event->status = erFAIL;
+					$event->redirect = false;
+					break;
+				}
+			}
+		}
+
 		$this->SetFrontRedirectTemplate($event, 'modify');
 	}
 
@@ -1838,11 +1902,29 @@
 			return ;
 		}
 
-		$event->SetRedirectParam('opener', 's');
-
+		// prepare redirect template
 		$object =& $event->getObject();
-		$next_template = $object->GetDBField('Status') == STATUS_ACTIVE ? 'confirm_template' : 'pending_confirm_template';
+		$is_active = ($object->GetDBField('Status') == STATUS_ACTIVE);
+
+		$next_template = ($object->GetDBField('Status') == STATUS_ACTIVE) ? 'confirm_template' : 'pending_confirm_template';
 		$event->redirect = $this->Application->GetVar($template_key.'_'.$next_template);
+		$event->SetRedirectParam('opener', 's');
+
+		// send email events
+		$perm_prefix = $this->Application->getUnitOption($event->Prefix, 'PermItemPrefix');
+		switch ($event->Name) {
+			case 'OnCreate':
+				$event_suffix = $is_active ? 'ADD' : 'ADD.PENDING';
+				$this->Application->EmailEventAdmin($perm_prefix.'.'.$event_suffix); // there are no ADD.PENDING event for admin :(
+				$this->Application->EmailEventUser($perm_prefix.'.'.$event_suffix, $object->GetDBField('CreatedById'));
+				break;
+
+			case 'OnUpdate':
+				$event_suffix = $is_active ? 'MODIFY' : 'MODIFY.PENDING';
+				$this->Application->EmailEventAdmin($perm_prefix.'.'.$event_suffix); // there are no ADD.PENDING event for admin :(
+				$this->Application->EmailEventUser($perm_prefix.'.'.$event_suffix, $object->GetDBField('ModifiedById'));
+				break;
+		}
 	}
 
 	/**