/*

* 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:  Central repository observer class.

*

*/

#ifndef CVTENGCROBSITEM_H

#define CVTENGCROBSITEM_H

//  INCLUDES

#include <e32base.h>

#include <e32std.h>

#include "cenrepnotifyhandler.h"

// FORWARD DECLARATIONS

class MVtEngCRSettingObserver;

// CLASS DECLARATION

/**

*  Central repository listener for video telephony.

*

*  @lib videoteleng.lib

*  @since Series 60 3.0

*/

NONSHARABLE_CLASS( CVtEngCRObserverItem ) : public CBase,

    public MCenRepNotifyHandlerCallback

    {

    public:  // Constructors and destructor.

        /**

        * Two-phased constructor.

        * @param aObserver the real observer to notify

        * @param aUid UID for this listener

        * @param aKey ID for this listener

        * @param aType type of information interested in

        * @return this CR observer

        */

        static CVtEngCRObserverItem* NewL( 

            MVtEngCRSettingObserver* aObserver,

            TUid aUid, TUint32 aKey, 

            CCenRepNotifyHandler::TCenRepKeyType aType );

        /**

        * Destructor.

        */

        virtual ~CVtEngCRObserverItem();

    public: // From MCenRepNotifyHandlerCallback.

        /**

        * Callback to notify changed integer setting.

        * @param aId changed id

        * @param aNewValue 

        */

        void HandleNotifyInt( TUint32 aId, TInt aNewValue );

        /**

        * Callback to notify changed real setting.

        * @param aId changed id

        * @param aNewValue 

        */

        void HandleNotifyReal( TUint32 aId, TReal aNewValue );

        /**

        * Callback to notify changed string setting.

        * @param aId changed id

        * @param aNewValue 

        */

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

        /**

        * Callback to notify changed binary setting.

        * @param aId changed id

        * @param aNewValue 

        */

        void HandleNotifyBinary( TUint32 aId, const TDesC8& aNewValue );

        /**

        * Callback to notify changed setting.

        * @param aId changed id

        */

        void HandleNotifyGeneric( TUint32 aId);

        /**

        * Callback to notify of an occurred error.

        * @param aId changed id

        * @param aError 

        * @param aHandler which handler

        */

        void HandleNotifyError( TUint32 aId, TInt aError, 

            CCenRepNotifyHandler* aHandler );

        public: // New functions.

        /**

        * Checks if this one matches given UID and key.

        * @param aUID UID to use in comparison 

        * @param aKey key to use in comparison

        * @return ETrue if match

        */

        TBool Offer( const TUid aUid, const TUint32 aKey ) const;

        /**

        * Checks if this one matches given UID.

        * @param aUID UID to use in comparison 

        * @return ETrue if match

        */

        TBool Offer( const TUid aUid ) const;

        /**

        * Checks if this one matches given key.

        * @param aKey key to use in comparison 

        * @return ETrue if match

        */

        TBool Offer( const TUint32 aKey ) const;

        /**

        * Returns UID of this handler.

        * @return UID

        */

        TUid Uid() const;

        /**

        * Returns key of this handler.

        * @return key

        */

        TUint32 Key() const;

        /**

        * Returns notifier of this handler.

        * @return notifier

        */

        CCenRepNotifyHandler* Notifier() const;

        /**

        * Returns type of this handler.

        * @return type

        */

        CCenRepNotifyHandler::TCenRepKeyType Type() const;

        /**

        * Returns observer of this handler.

        * @return observer

        */

        MVtEngCRSettingObserver* Observer() const;

        /**

        * Sets CenRep notifier

        * @param notifier to set.

        */

        void SetCenRepNotifier( CCenRepNotifyHandler* aNotifier );

    private: // Constructor.

        /**

        * C++ default constructor.

        * @param aObserver the real observer to notify

        * @param aUid UID for this listener

        * @param aKey ID for this listener

        * @param aType type of information interested in

        */

        CVtEngCRObserverItem( MVtEngCRSettingObserver* Observer,

            TUid aUid, TUint32 aKey, 

            CCenRepNotifyHandler::TCenRepKeyType aType );

    private:    // Data

        // Callback for notifications.

        MVtEngCRSettingObserver* iObserver;

        // UID for this item.

        TUid                     iUid;

        // Key for this item.

        TUint32                  iKey;

        // Type of listener.

        CCenRepNotifyHandler::TCenRepKeyType iType;

        // Central repository notifier.

        CCenRepNotifyHandler*   iNotifier;

};

#endif      // CVTENGCROBSITEM_H

// End of File