/*

* 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:   CScreensaverRepositoryWatcher declaration.

*

*/

#ifndef C_SCREENSAVERREPOSITORYWATCHER_H

#define C_SCREENSAVERREPOSITORYWATCHER_H

// INCLUDES

#include <cenrepnotifyhandler.h>

// CLASS DECLARATION

class CRepository;

/**

* The class used to monitor the change of register value

*/

class CScreensaverRepositoryWatcher : public CBase,

    public MCenRepNotifyHandlerCallback

    {

public:

    /**

    * Two-phased constructor

    */

    static CScreensaverRepositoryWatcher* NewL(const TUid aUid,

            const TUint32 aKey, CCenRepNotifyHandler::TCenRepKeyType aKeyType,

            TCallBack aCallBack, CRepository* aRepository);

    /**

    * Two-phased constructor

    */

    static CScreensaverRepositoryWatcher* NewL(const TUid aUid,

            TCallBack aCallBack, CRepository* aRepository);

    /**

    * Destructor

    */

    ~CScreensaverRepositoryWatcher();

    /**

    * Returns the changed key

    */

    TUint32 ChangedKey();

public:

    // from MCenRepNotifyHandlerCallback

    void HandleNotifyInt(TUint32 aKey, TInt aNewValue);

    void HandleNotifyString(TUint32 aKey, const TDesC16& aNewValue);

    void HandleNotifyGeneric(TUint32 aKey);

    void HandleNotifyError(TUint32 aKey, TInt aError,

            CCenRepNotifyHandler* aHandler);

private:

    /**

    * C++ default constructor

    */

    CScreensaverRepositoryWatcher(const TUid aUid, const TUint32 aKey,

            TCallBack aCallBack, CRepository* aRepository);

    /**

    * Two-phased constructor

    */

    void ConstructL(CCenRepNotifyHandler::TCenRepKeyType aKeyType);

    /**

    * Two-phased constructor

    */

    void ConstructL();

private:

    TUid iUid;

    TUint32 iKey;

    TUint32 iChangedKey;

    TCallBack iCallBack;

    CRepository* iRepository;

    CCenRepNotifyHandler* iNotifyHandler;

    };

#endif // C_SCREENSAVERREPOSITORYWATCHER_H