--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wlanutilities/wlansniffer/wlaninfosorting/inc/wsfwlaninfosortingdbchangenotifier.h	Wed Sep 01 12:20:32 2010 +0100
@@ -0,0 +1,127 @@
+/*
+* Copyright (c) 2007-2008 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Class header for CWsfWlanInfoSortingDbChangeNotifier
+*
+*/
+
+
+
+#ifndef C_WSFWLANINFOSORTINGDBCHANGENOTIFIER_H
+#define C_WSFWLANINFOSORTINGDBCHANGENOTIFIER_H
+
+
+//  EXTERNAL INCLUDES
+#include <e32base.h>
+#include <d32dbms.h>
+
+
+//  FORWARD DECLARATIONS
+class MWsfWlanInfoSortingFilterVisitor;
+
+
+/**
+ * Active object to monitor changes in a given database
+ *
+ * @lib wsfwlaninfosorting.lib
+ * @since S60 5.0
+ */
+
+NONSHARABLE_CLASS( CWsfWlanInfoSortingDbChangeNotifier ): public CActive
+    {
+    public:     // construction
+        /**
+         * Factory function.
+         * @since S60 5.0
+         * @param aDatabase The database to be monitored. Ownership not passed.
+         * @return Class instance
+         */
+        static CWsfWlanInfoSortingDbChangeNotifier* NewLC( 
+                                                      RDbDatabase& aDatabase );
+
+        /**
+         * Factory function.
+         * @since S60 5.0
+         * @param aDatabase The database to be monitored. Ownership not passed.
+         * @return Class instance
+         */
+        static CWsfWlanInfoSortingDbChangeNotifier* NewL( 
+                                                      RDbDatabase& aDatabase );
+        
+        ~CWsfWlanInfoSortingDbChangeNotifier();
+
+
+    private:    // constructors
+        /**
+         * Constructor
+         * @since S60 5.0
+         * @param aDatabase The database to be monitored. Ownership not passed.
+         */
+        CWsfWlanInfoSortingDbChangeNotifier( RDbDatabase& aDatabase );
+        
+        void ConstructL();    
+    
+        
+    public:     // new methods
+
+        /**
+        * Starts monitoring the database
+        * @since S60 5.0
+        */
+         void StartDbObservation();
+         
+         /**
+         * Append filter to the list of clients to be notified. 
+        * @since S60 5.0
+         * @param aRelatedFilter A filter which is interested in db events.
+         *                       Ownership not passed.
+         * @return - void
+         */
+        void AppendDbRelatedFilterL( 
+                            MWsfWlanInfoSortingFilterVisitor* aRelatedFilter );
+        
+        /**
+        * Removes the filter from the list of clients. 
+        * @since S60 5.0
+         * @param aRelatedFilter A filter which is interested in db events.
+         *                       Ownership not passed.
+         * @return - void
+         */
+        void RemoveDbRelatedFilter( 
+                            MWsfWlanInfoSortingFilterVisitor* aRelatedFilter );
+        
+        
+    private: // from CActive
+        
+        void DoCancel(); 
+        void RunL();
+
+
+    private: //data    
+        /**
+        * The database to be monitored. Not owned.
+        */
+        RDbDatabase* iDatabase;
+        
+        /**
+        * Database notifier
+        */
+        RDbNotifier iNotifier;
+        
+        /**
+        * Array of DB-related filters to be notified
+        */
+        RPointerArray<MWsfWlanInfoSortingFilterVisitor> iDbAwareFilters;
+    };
+
+#endif // C_WSFWLANINFOSORTINGDBCHANGENOTIFIER_H