/*

* Copyright (c) 2004-2007 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:  An interface for contact view base extension.

*

*/

#ifndef MVPBKCONTACTVIEWBASECHILDACCESSEXT_H

#define MVPBKCONTACTVIEWBASECHILDACCESSEXT_H

// INCLUDES

#include <e32cmn.h>

#include <vpbkcontactview.hrh>

#include <bamdesca.h>

// FORWARD DECLARATIONS

// CLASS DECLARATIONS

/// This is the UID that identifies this interface.

const TUint KVPbkViewBaseExtChildAccess = 123; // TODO Allocate UID.

/**

 * This is an extension to MVPbkContactViewBase for accessing child views

 * of a composite.

 */

class MVPbkContactViewBaseChildAccessExtension

    {

    public: // types

    public:  // Destructor

        /**

         * Destructor.

         */

        virtual ~MVPbkContactViewBaseChildAccessExtension() { }

    public:  // New functions

        /**

         * Tells the number of child views.

         */

        virtual TInt ChildViewCount() const = 0;

        /**

         * Gives reference to a specific child view.

         * @param aIndex Index of child view.

         */

        virtual MVPbkContactViewBase& ChildViewAt(TInt aIndex) = 0;

        /**

         * Gives pointer to a specific child view.

         * @param aId Id of child view.

         */

        virtual MVPbkContactViewBase* GetChildViewById(TInt aId) = 0;

        /**

         * Gives a current view id.

         */

        virtual TInt GetViewId() = 0;

        /**

         * Returns an extension point for this interface or NULL.

         *

         * @param aExtensionUid no extensions defined currently.

         * @return an extension point for this interface or NULL.

         */

        virtual TAny* MVPbkContactViewBaseChildAccessExtensionExtension(TUid /*aExtensionUid*/) 

                { return NULL; }

    };

#endif // MVPBKCONTACTVIEWBASECHILDACCESSEXT_H

// End of File