/*

* Copyright (c) 2009 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:

*

*/

#ifndef IRPROPERTYOBSERVER_H

#define IRPROPERTYOBSERVER_H 

#include <e32base.h>

//This is an symbian interface.  

class MIRPropertyChangeObserverInterface

{

public:

    virtual void HandlePropertyChangeL(const TUid& aCategory, const TUint aKey, const TInt aValue) = 0;

    virtual void HandlePropertyChangeErrorL(const TUid& aCategory, const TUint aKey, TInt aError) = 0;

};

class MIRPropertyObserverInterface;

class CIRPropertyChangeAO;

class CIRPropertyObserver : public CBase, public MIRPropertyChangeObserverInterface

{

public:

    //only two-phase constructor is permit to use

    static  CIRPropertyObserver* NewL(MIRPropertyObserverInterface* aObserver);

    static  CIRPropertyObserver* NewLC(MIRPropertyObserverInterface* aObserver);

    ~CIRPropertyObserver();

    TBool    IsCallActive() const;

protected:

    //from base class MIRPropertyChangeObserverInterface

    void HandlePropertyChangeL(const TUid& aCategory, const TUint aKey, const TInt aValue);

    void HandlePropertyChangeErrorL(const TUid& aCategory, const TUint aKey, TInt aError);

private:

    void ConstructL();

    CIRPropertyObserver(MIRPropertyObserverInterface* aObserver);

private: 

    CIRPropertyChangeAO* iCallStatusObserver;

    TBool                iIsCallActive;

    MIRPropertyObserverInterface* iPropertyObserver;

};

#endif	//IRPROPERTYOBSERVER_H