/*

* 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:  Observer interface for handling features

*

*/

#ifndef MVTUIFEATURE_H

#define MVTUIFEATURE_H

//  INCLUDES

#include <e32std.h>

#include "tvtuifeatureids.h"

// CLASS DECLARATION

/**

*  Interface for handling features

*

*  @since S60 v3.2

*/

class MVtUiFeature

    {

    public:  // New functions

        /**

        * ENotSupported

        *  feature is not supported in current configuration.

        * EUnprepared

        *   starting may require some init code to run.

        * EPreparing

        *   running initialization code.

        * EReady

        *   feature can be started.

        * EActive

        *   feature is running.

        * EDisabled

        *   feature is supported but cannot be started at this time.

        * EFailed

        *   started but failed (maybe temporary or permanent, feature specific)

        */

        enum TVtUiFeatureState

            {

            ENotSupported,

            EUnprepared,

            EPreparing,

            EReady,

            EActive,

            EDisabled,

            EFailed

            };

        /**

        * Starts the feature.

        */

        virtual void StartL() = 0;

        /**

        * Stops the feature.

        */

        virtual void Stop() = 0;

        /**

        * Current state of the feature

        */

        virtual TVtUiFeatureState State() const = 0;

        /**

        * Id()

        */

        virtual TVtUiFeatureId Id() const = 0;

    };

#endif // MVTUIFEATURE_H

// End of File