--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/IMPSengine/client/inc/impshandler.h	Thu Dec 17 08:41:52 2009 +0200
@@ -0,0 +1,241 @@
+/*
+* Copyright (c) 2002-2004 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: 
+*     Base class for client side event handlers.
+*
+*/
+
+
+#ifndef IMPSHANDLER_H
+#define IMPSHANDLER_H
+
+// INCLUDES
+#include <e32base.h>
+#include "impspacked.h"
+#include "impsclientsrv.h"
+#include "impshandlertimer.h"
+
+// FORWARD DECLARATIONS
+class RImpsClient2;
+class MImpsStatusHandler2;
+class MImpsErrorHandler2;
+class CImpsFields;
+
+// CLASS DECLARATION
+
+
+// -----------------------------------------------------------------------------
+// TWvBuf::CWvBuf
+// -----------------------------------------------------------------------------
+class TWvBuf 
+    {
+    public:
+        /**
+        * Constructor
+        * @param aBuf data buffer
+        */
+        TWvBuf( HBufC8* aBuf );
+
+    public:
+        TPtr8  iPtr;    // pointer to the buffer
+    };
+
+
+/**
+*  Abstract base class for WV event handlers.
+*/
+class CImpsHandler2 :public CActive
+    {
+    public:  // Constructors and destructor
+        
+        /**
+        * Destructor.
+        */
+        virtual ~CImpsHandler2();
+
+
+    public: // New functions
+        
+        /** 
+        * Start the execution. Ready to get messages after that.
+        */
+        void StartRun();
+
+        /**
+        * Session status handler accessor
+        * @return status event handler
+        */
+        inline MImpsStatusHandler2* StatusHandler();
+
+        /**
+        * Session status handler mutator.
+        * Registers status to server too.
+        * @param aObserver status event observer
+        */
+        void SetStatusHandlerL( MImpsStatusHandler2* aObserver );
+
+        /**
+        * Error handler accessor
+        * @return error handler
+        */
+        inline MImpsErrorHandler2* ErrorHandler();
+
+        /**
+        * Error handler mutator.
+        * Registers status to server too.
+        */
+        void SetErrorHandlerL( MImpsErrorHandler2* aObserver );
+
+        /**
+        * Request event message body from the server
+        */
+        void EventHandled();
+
+    private: // New functions
+
+        /**
+        * Read message from server thread
+        * @param aLength data length to be read
+        * @return ETrue if message read complete, no need to read body separately
+        */
+        TBool ReadDataL( TInt aLength );
+
+        /**
+        * Request event message body from the server
+        */
+        void EventBody();
+
+        /**
+        * Reset IPC buffer
+        */
+        void ResetBuffers();
+
+        /**
+        * Current event message buffer size
+        * @return buffer size
+        */
+        inline TInt CurrentSize() const;
+        
+    protected:  // New functions
+
+        /**
+        * Actual construction.
+        */
+        void ConstructL();
+
+        /**
+        * Call appropriate observer
+        * @param aErrorFields used if error case. NULL or ImpsFields structure
+        *
+        */
+        virtual void HandleEventL( CImpsFields* aErrorFields )=0;
+
+        /**
+        * Detailed error handling
+        * @param aOpCode operation-id
+        * @param aStatus error code
+        * @param aFields error data
+        */
+        void HandleErrorEventL(
+            TInt aOpCode, TInt aStatus, CImpsFields* aFields);
+
+        /**
+        * Registers base class observer for session status change observer
+        */
+        void DoRegisterStatusHandlerL(  );
+
+        /**
+        * Unregisters base class observer for session status change observer
+        */
+        void DoUnregisterStatusHandlerL(  );
+
+        /**
+        * Registers base class observer for detailed error observer
+        */
+        void DoRegisterErrorHandlerL(  );
+
+        /**
+        * Unregisters base class observer for detailed error observer
+        */
+        void DoUnregisterErrorHandlerL(  );
+        
+    protected:  
+
+        /**
+        * C++ constructor 
+        */
+        CImpsHandler2( TInt aPriority, RImpsClient2& aClient );
+
+
+    protected:  // Functions from base classes
+
+        /**
+        * From CActive 
+        */
+        void RunL();
+
+        /**
+        * From CActive 
+        */
+        void DoCancel();
+  
+    protected:  // Data
+
+        // Message header area
+        TBuf<sizeof(SImpsEventData)> iEventData;
+
+        // Client interface reference who is using this object
+        RImpsClient2&            iClient;
+        // Pointer to registered online status observer
+        MImpsStatusHandler2*     iStatusHandler;
+        // Pointer to registered detailed error observer
+        MImpsErrorHandler2*      iErrorHandler;
+        // Internal message data structure
+        CImpsFields*            iFields;
+
+    private:    // Data
+
+        // Pointer to stack variable to detect the deletion of the heap 
+        // instance. This case takes place if a client
+        // calls Unregister in observer method.
+        TBool*                  iDestroyedPtr;
+
+        // IPC buffers and auxiliary classes
+        TIpcArgs                iArgs;
+        HBufC8*                 iBody;
+        TWvBuf*                 iPtrStore;
+        
+        // Timer for server busy situations
+        CImpsHandlerTimer*		iBusyTimer;
+    };
+
+
+inline MImpsStatusHandler2* CImpsHandler2::StatusHandler()
+    {
+    return iStatusHandler;
+    }
+
+inline MImpsErrorHandler2* CImpsHandler2::ErrorHandler()
+    {
+    return iErrorHandler;
+    }
+
+inline TInt CImpsHandler2::CurrentSize() const
+    {
+    return iBody ? iBody->Des().MaxSize() : 0;
+    }
+
+#endif        
+            
+// End of File