--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/srsf/nssvascontacthdlr/src/nssvasdatasyncwatcher.h	Thu Dec 17 08:46:30 2009 +0200
@@ -0,0 +1,137 @@
+/*
+* Copyright (c) 2004-2006 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:  Watcher for the PC-Suite data sync state
+*
+*/
+
+
+#ifndef NSSVASDATASYNCWATCHER_H
+#define NSSVASDATASYNCWATCHER_H
+
+//  INCLUDES
+
+#include <e32base.h>
+
+// Publish & Subscribe of the contact handler activity
+#include <e32property.h>  
+
+#include <DataSyncInternalPSKeys.h>
+
+// CONSTANTS
+
+
+// MACROS
+
+// FORWARD DECLARATIONS
+
+// CLASS DECLARATION
+
+/**
+*  Interface for classes that want to be notified about the PC Suite data
+*  sync status: is it running or not
+*/
+NONSHARABLE_CLASS( MNssDataSyncStateObserver ) 
+    {
+    public:
+        /** 
+        *  Is called when data sync status is changed and when data sync state
+        *  observation was just started
+        *  @param aRunning ETrue if from now on data sync process is running
+        *                  EFalse otherwise
+        */
+        virtual void DataSyncStateChanged( TBool aRunning ) = 0;
+    };
+
+
+/** 
+*  Watches for the changes of the data sync state (is it running) or not
+*  and notifies the host observer about it
+*/
+NONSHARABLE_CLASS( MNssDataSyncWatcher )
+    {
+    public:
+        virtual ~MNssDataSyncWatcher();
+        /**
+        * @return ETrue if data sync is in progress, EFalse otherwise
+        */
+        virtual TBool InProgress() = 0;
+    };
+    
+/** 
+*  Creates and returns 
+*/
+NONSHARABLE_CLASS ( CNssDataSyncWatcherFactory ) : public CBase
+    {
+    public:
+        /**
+        *  Constructs and returns the data sync watcher according to what's
+        *  available in the system. I.e RProperty based watcher or
+        *  shared data client based watcher
+        *  @param aHost Observer to be notified about data sync state changes
+        *
+        *  @return Constructed and already started watcher
+        */
+        static MNssDataSyncWatcher* ConstructDataSyncWatcherL( MNssDataSyncStateObserver& aHost );
+    };
+
+/**
+* RProperty based data sync watcher implementation
+*/
+NONSHARABLE_CLASS ( CNssDataSyncPropertyWatcher ) : public CActive, public MNssDataSyncWatcher
+    {
+    public:
+        /** 
+        *  Factory construction
+        *  @param aHost Observer to be notified about data sync state changes
+        *  @return Constructed and already started CNssDataSyncWatcher
+        */
+        static CNssDataSyncPropertyWatcher* NewL( MNssDataSyncStateObserver& aHost );
+        
+        /** 
+        * Destructor 
+        * Doesn't need to be declared as virtual. Is virtual since CBase 
+        * implementation
+        */
+        ~CNssDataSyncPropertyWatcher();
+        
+        /**
+        * @return ETrue if data sync is in progress, EFalse otherwise
+        */
+        virtual TBool InProgress();
+    private:
+        /** C++ constructor */
+        CNssDataSyncPropertyWatcher( MNssDataSyncStateObserver& aHost );
+        
+        /** Symbian second phase constructor */
+        void ConstructL();
+        
+        /** is called when data sync property changed */
+        void RunL();
+        
+        /** Is called when system wants immediate cancelling of the watching */
+        void DoCancel();
+    private:
+        // Publish & Sunscribe property about the data sync state
+        RProperty   iProperty;
+        
+        // Host to be notified about the state changes
+        MNssDataSyncStateObserver* iHost;
+        
+        // current data sync status
+        TDataSyncStatus iDataSyncStatus;
+    };
+
+#endif // NSSVASDATASYNCWATCHER_H
+            
+// End of File