diff -r 000000000000 -r 4e1aa6a622a0 sensorservices/sensorserver/inc/client/sensrvchannelchangehandler.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sensorservices/sensorserver/inc/client/sensrvchannelchangehandler.h	Tue Feb 02 00:53:00 2010 +0200
@@ -0,0 +1,114 @@
+/*
+* Copyright (c) 2007 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:  Channel change handler
+*
+*/
+
+
+#ifndef CSENSRVCHANNELCHANGEHANDLER_H
+#define CSENSRVCHANNELCHANGEHANDLER_H
+
+
+#include <e32base.h>
+#include "sensrvclient.h"
+#include "sensrvchannelinfo.h"
+
+class MSensrvChannelChangeHandlerObserver;
+
+/**
+ *  Channel Change handler class
+ *
+ *  @lib sensrvclient.lib
+ *  @since S60 5.0
+ */
+NONSHARABLE_CLASS( CSensrvChannelChangeHandler ) : public CActive
+    {
+    public:
+
+        static CSensrvChannelChangeHandler* NewL( RSensrvClient& aSensrvClient );
+
+        static CSensrvChannelChangeHandler* NewLC( RSensrvClient& aSensrvClient );
+
+        /**
+        * Destructor
+        */
+        virtual ~CSensrvChannelChangeHandler();        
+    
+    public:
+    
+        /**
+        * Start channel change listening. Send request to server.
+        * 
+        * @since S60 5.0
+        * @param aChannelChangeObserver Channel change observer
+        * @param aSearchParameters Search parameters.
+        */
+        void StartListening( MSensrvChannelChangeHandlerObserver* aChannelChangeObserver,
+                             const TSensrvChannelInfo& aSearchParameters );
+        
+    protected: // From CActive
+
+          void DoCancel();
+          void RunL();
+          TInt RunError(TInt aError);
+
+    private:
+
+        /**
+        * Constructor
+        */
+        CSensrvChannelChangeHandler( RSensrvClient& aSensrvClient );
+
+        /**
+        * Create and send request to server
+        */
+        void CreateAndSendRequest();
+
+
+    private: // data
+        
+        /**
+        * Client
+        * Not own.
+        */
+        RSensrvClient& iSensrvClient;
+        
+        /**
+        * Observer
+        * Not own.         
+        */
+        MSensrvChannelChangeHandlerObserver* iObserver;       
+       
+        /**
+        * Server writes channel info of new or removed channel here.
+        */
+        TSensrvChannelInfoPckgBuf iChannelInfoPckgBuf;
+        
+        /**
+        * Server writes type of change here.
+        */
+        TSensrvTSensrvChannelChangeTypePckgBuf iChangeTypePckgBuf;
+        
+        /**
+        * Error count
+        */
+        TInt iErrorCount;
+        
+        /**
+        * Stores the current search parameters.
+        */
+        TSensrvChannelInfoPckgBuf iSearchParameterBuf;
+    };
+    
+#endif // CSENSRVCHANNELCHANGEHANDLER_H