--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/natfw/natfwclient/inc/natfweventregistration.h	Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,110 @@
+/*
+* 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:    A container for event registration functionality
+*
+*/
+
+
+
+
+#ifndef NATFWEVENTREGISTRATION_H
+#define NATFWEVENTREGISTRATION_H
+
+#include "mnatfwconnectivityobserver.h"
+
+/**
+ *  The container class for event registration data
+ *
+ *  @lib natconfw.lib
+ *  @since S60 v3.2
+ */
+NONSHARABLE_CLASS( TNATFWEventRegistration )
+    {
+
+public: // methods
+
+    inline TNATFWEventRegistration(
+        MNATFWConnectivityObserver& aObserver ) :
+        iObserver( aObserver ),
+        iEvents( 0 )
+        {
+        }
+
+    inline MNATFWConnectivityObserver& Observer() const
+        {
+        return iObserver;
+        }
+
+    inline TUint16 Events() const
+        {
+        return iEvents;
+        }
+
+// Disabled a PC-Lint notice: Loss of precision. PC-Lint is giving false
+// positives involving shift operations with subinteger variables.
+/*lint -e734*/
+    inline void ProcessRegistrationL( TUint16 aToBeRegistered )
+        {
+        // Force down to maximum value in case of an overflow
+        aToBeRegistered &= MNATFWConnectivityObserver::EAllEvents;
+        TUint16 backup( iEvents );
+        TUint16 bitcount( 0 );
+        do
+            {
+            if ( aToBeRegistered & 1 )
+                {
+                // Event requested for registration
+                if ( ( iEvents >> bitcount ) & 1 )
+                    {
+                    // Event already registered, do backup before leaving
+                    iEvents = backup;
+                    User::Leave( KErrAlreadyExists );
+                    }
+                // Register event
+                iEvents ^= ( 1 << bitcount );
+                }
+
+            // Examine the next event
+            aToBeRegistered >>= 1;
+            ++bitcount;
+            } while ( aToBeRegistered );
+        }
+
+    inline void ProcessUnregistration( TUint16 aToBeUnregistered )
+        {
+        // Force down to maximum value in case of an overflow
+        aToBeUnregistered &= MNATFWConnectivityObserver::EAllEvents;
+        TUint16 bitcount( 0 );
+        do
+            {
+            if ( ( aToBeUnregistered & 1 ) &&
+                 ( ( iEvents >> bitcount ) & 1 ) )
+                {
+                // Unregister event as it is registered
+                iEvents ^= ( 1 << bitcount );
+                }
+
+            // Examine the next event
+            aToBeUnregistered >>= 1;
+            ++bitcount;
+            } while ( aToBeUnregistered );
+        }
+
+private: // data
+
+    MNATFWConnectivityObserver& iObserver;
+    TUint16 iEvents;
+    };
+
+#endif // NATFWEVENTREGISTRATION_H