/*

* Copyright (c) 2004 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 CAPPCONTROLLERPROPERTYHANDLER_H

#define CAPPCONTROLLERPROPERTYHANDLER_H

// INCLUDES

#include <e32base.h>

#include <e32property.h>

// FORWARDS

class CVCApplicationControllerImpl;

// CLASS DECLARATION

/**

* Active object for subscribing to Publish & Suscribe properties

* @since 2.8

*/

class CAppControllerPropertyHandler : public CActive

    {

    public:  // Constructors and destructor

        /**

        * Symbian two-phased constructor.

        * @since 2.8

        * @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 CAppControllerPropertyHandler* NewL(

            TUid aCategory,

            TUint aKey,

            CVCApplicationControllerImpl* aController );

        // Destructor

        virtual ~CAppControllerPropertyHandler();

    public:  // New functions

		/**

        * Get current property value.

        * @since 2.8

        * @return current (integer) value of this property

        */

        TInt Value();

    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 aCategory,

						TUint aKey );

        /**

        * C++ constructor.

        */

        CAppControllerPropertyHandler(CVCApplicationControllerImpl* aController);

    private:	// Data

        RProperty					  iProperty;

        TCallBack					  iCallback;

        TBool						  iRequestIssued;

		CVCApplicationControllerImpl* iController;

    };

#endif

// End of File