diff -r aaeeca1f15af -r e8d784ac1a4b inc/screensavershareddatamonitor.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/inc/screensavershareddatamonitor.h	Wed Sep 01 12:30:40 2010 +0100
@@ -0,0 +1,184 @@
+/*
+* Copyright (c) 2003 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:   Defination for screensaver shared data monitoring.
+*
+*/
+
+
+
+#ifndef C_SCREENSAVERSHAREDDATAMONITOR_H
+#define C_SCREENSAVERSHAREDDATAMONITOR_H
+
+// INCLUDES
+#include <e32property.h>
+
+// CLASS DECLARATION
+class CScreensaverSharedDataI;
+class CScreensaverRepositoryWatcher;
+class CScreensaverEngine;
+class CScreensaverView;
+class CSubscriber;
+
+
+/**
+ *  Cscreensavershareddatamonitor
+ * 
+ */
+class CScreensaverSharedDataMonitor : public CBase
+    {
+public:
+    // Constructors and destructor
+
+    /**
+     * Destructor.
+     */
+    ~CScreensaverSharedDataMonitor( );
+
+    /**
+     * Two-phased constructor.
+     */
+    static CScreensaverSharedDataMonitor* NewL( CScreensaverSharedDataI* aData );
+
+private:
+
+    /**
+     * Constructor for performing 1st stage construction
+     */
+    CScreensaverSharedDataMonitor( CScreensaverSharedDataI* aData );
+
+    /**
+     * EPOC default constructor for performing 2nd stage construction
+     */
+    void ConstructL();
+    
+    /*
+    * Returns the pointer of screensaver appui 
+    */
+    CScreensaverView* View();
+    
+    /*
+    * Returns the refrence of model instance
+    */
+    CScreensaverEngine& Model();
+    
+    /**
+    * detele CSubscriber
+    */
+    void DeleteSubscriber( CSubscriber*& aSubscriber );
+    
+private:
+    
+    /**
+    * Callback fuction. Called when the preview mode changed
+    */
+    static TInt HandlePreviewModeChanged(TAny* aPtr);
+
+    /**
+    * Callback fuction. Called when the MMC state changed
+    */
+    static TInt HandleMMCStateChanged(TAny* aPtr);
+
+    /**
+    * Callback fuction. Called when the USB state changed
+    */
+    static TInt HandleUSBStateChanged(TAny* aPtr);
+
+    /**
+    * Callback fuction. Called when the Keyguard state changed
+    */
+    static TInt HandleKeyguardStateChanged(TAny* aPtr);
+
+    /**
+    * Callback fuction. Called when the Call state changed
+    */
+    static TInt HandleCallStateChanged(TAny* aPtr);
+
+    /**
+    * Callback fuction. Called when the ShuttingDown state changed
+    */
+    static TInt HandleShuttingDownStateChanged(TAny* aPtr);
+
+    /**
+    * Callback function. Called when a start/stop request is received
+    */
+    static TInt HandleActivateSSChanged( TAny* aPtr );
+    
+    /**
+    * Callback function. Called when charger state changes
+    */
+    static TInt HandleChargerStateChanged( TAny* aPtr );
+    
+    /**
+    * Callback function. Called when the message waiting display state changes
+    */
+    static TInt HandleMessageWaitingStateChanged( TAny* aPtr );
+
+private:
+    
+    /*
+    * The data of model class, Not own 
+    */
+    CScreensaverSharedDataI* iData;
+    
+    /*
+    * The Preview mode property and its monitor
+    */
+    RProperty iPreviewModeProperty;
+    CSubscriber* iPreviewModeSubscriber;
+    
+    /*
+    * The MMC property and its monitor
+    */
+    RProperty iMMCWatchProperty;
+    CSubscriber* iMMCWatchSubscriber;
+    
+    /*
+    * The USB property and its monitor 
+    */
+    RProperty iUSBWatchProperty;
+    CSubscriber* iUSBWatchSubscriber;
+    
+    /*
+    * The  KeyGuard state property and its watcher
+    */
+    RProperty iKeyguardStateProperty;
+    CSubscriber* iKeyguardStateSubscriber;
+    
+    /*
+    * The Call state property and its watcher 
+    */
+    RProperty iCallStateProperty;
+    CSubscriber* iCallStateSubscriber;
+    
+    /*
+    * The shutting down property and its watcher 
+    */
+    RProperty iShuttingDownProperty;
+    CSubscriber* iShuttingDownSubscriber;
+
+    RProperty iActivateSSProperty;
+    CSubscriber* iActivateSSSubscriber;
+    
+    /*
+    * Charger state property and subscriber
+    */
+    RProperty iChargerStateProperty;
+    CSubscriber* iChargerStateSubscriber;
+    
+    CRepository* iMessageWaitingRepository;
+    CScreensaverRepositoryWatcher* iMessageWaitingWatcher;
+
+    };
+
+#endif // C_SCREENSAVERSHAREDDATAMONITOR_H