/*

* Copyright (c) 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:  Active object for subscribing to Publish & Suscribe properties 

*

*/

#ifndef VUICPROPERTYHANDLER_H

#define VUICPROPERTYHANDLER_H

// INCLUDES

#include <e32base.h>

#include <e32property.h>

// FORWARDS

class CVoiceRecognitionDialogImpl;

// CLASS DECLARATION

/**

* Active object for subscribing to Publish & Suscribe properties

*/

NONSHARABLE_CLASS( CPropertyHandler ) : public CActive

    {

    public:  // Constructors and destructor

        /**

        * Symbian two-phased constructor.

        * @param aCategory Category of the property to watch

        * @param aKey      Key UID of the property to watch

        * @param aCallback Callback to get notifications about changes

        */

        static CPropertyHandler* NewL( TUid aFirstCategory,

                                       TUint aFirstKey,

                                       TUid aSecondCategory,

                                       TUint aSecondkey);

        // Destructor

        virtual ~CPropertyHandler();

    public:  // New functions

        /**

        * Method to handle the deregistration of monitoring accessories

        * @param 

        */  

        void Register( CVoiceRecognitionDialogImpl* aRecogObserver );

        /**

        * Method to handle the deregistration of monitoring accessories

        * @param 

        */  

        void DeRegister( CVoiceRecognitionDialogImpl* aRecogObserver );

    private: // Functions from base classes

        /**

        * From CActive.

        * Handle a change event.

        */

        void RunL();

        /**

        * From CActive.

        * Cancel the request to receive events.

        */

        void DoCancel();

    private: // New functions

        /**

        * Symbian OS 2nd phase constructor.

        */

        void ConstructL( TUid aFirstCategory,

                         TUint aFirstKey,

                         TUid aSecondCategory,

                         TUint aSecondKey );

        /**

        * C++ constructor.

        */

        CPropertyHandler();

    private:    // Data

        RProperty                       iProperty;

        TCallBack                       iCallback;

        TBool                           iRequestIssued;

        CVoiceRecognitionDialogImpl*    iRecogObserver;

        TUid                            iFirstCategory;

        TUint                           iFirstKey;

    };

#endif    // VUICPROPERTYHANDLER_H

// End of File