Index: branches/5.2.x/core/kernel/db/db_event_handler.php
===================================================================
diff -u -N -r14726 -r14758
--- branches/5.2.x/core/kernel/db/db_event_handler.php	(.../db_event_handler.php)	(revision 14726)
+++ branches/5.2.x/core/kernel/db/db_event_handler.php	(.../db_event_handler.php)	(revision 14758)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: db_event_handler.php 14726 2011-11-03 08:43:30Z alex $
+* @version	$Id: db_event_handler.php 14758 2011-11-11 10:39:49Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -169,6 +169,7 @@
 									'OnSaveWidths' => Array ('self' => true, 'subitem' => true),
 
 									'OnValidateMInputFields' => Array ('self' => 'view'),
+									'OnValidateField' => Array ('self' => true, 'subitem' => true),
 							);
 			$this->permMapping = array_merge($this->permMapping, $permissions);
 		}
@@ -1806,13 +1807,14 @@
 			/* @var $temp_handler kTempTablesHandler */
 
 			$temp_handler->CancelEdit();
-
 			$this->clearSelectedIDs($event);
-			$event->setRedirectParams(Array ('opener' => 'u'), true);
+
 			$this->Application->RemoveVar($event->getPrefixSpecial() . '_modified');
 
 			$changes_var_name = $this->Prefix . '_changes_' . $this->Application->GetTopmostWid($this->Prefix);
 			$this->Application->RemoveVar($changes_var_name);
+
+			$event->SetRedirectParam('opener', 'u');
 		}
 
 		/**
@@ -3029,6 +3031,49 @@
 		}
 
 		/**
+		 * Validates individual object field and returns the result
+		 *
+		 * @param kEvent $event
+		 */
+		function OnValidateField(&$event)
+		{
+			$event->status = kEvent::erSTOP;
+			$field = $this->Application->GetVar('field');
+
+			if ( ($this->Application->GetVar('ajax') != 'yes') || !$field ) {
+				return;
+			}
+
+			$object =& $event->getObject(Array ('skip_autoload' => true));
+			/* @var $object kDBItem */
+
+			$items_info = $this->Application->GetVar($event->getPrefixSpecial(true));
+
+			if ( !$items_info ) {
+				return;
+			}
+
+			list ($id, $field_values) = each($items_info);
+			$object->Load($id);
+			$object->SetFieldsFromHash($field_values);
+			$object->setID($id);
+
+			$response = Array ('status' => 'OK',);
+
+			$event->CallSubEvent($object->isLoaded() ? 'OnBeforeItemUpdate' : 'OnBeforeItemCreate');
+
+			// validate all fields, since "Password_plain" field sets error to "Password" field, which is passed here
+			$error_field = $object->GetFieldOption($field, 'error_field', false, $field);
+
+			if ( !$object->Validate() && $object->GetErrorPseudo($error_field) ) {
+				$response['status'] = $object->GetErrorMsg($error_field);
+			}
+
+			$event->status = kEvent::erSTOP; // since event's OnBefore... events can change this event status
+			echo json_encode($response);
+		}
+
+		/**
 		 * Returns auto-complete values for ajax-dropdown
 		 *
 		 * @param kEvent $event