/*

* 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:   Contains MCatalogsBase implementation base class definition

*

*/

#ifndef C_NCDOPERATION_H

#define C_NCDOPERATION_H

#include <e32cmn.h>

#include <e32base.h>

#include "catalogsbase.h"

#include "ncdoperation.h"

#include "ncdbaseoperationproxy.h"

template< class T1 >

class CNcdOperation : public CNcdBaseOperationProxy, public T1

    {

public:

    /**

     * @see MNcdOperation::OperationStateL()

     */

    MNcdOperation::TState OperationStateL() const

        {

        return DoOperationStateL();

        }    

    /**

     * @see MNcdOperation::StartOperationL()

     */

    void StartOperationL()

        {

        DoStartOperationL();

        }

    /**

     * @see MNcdOperation::CancelOperation()

     */

    void CancelOperation()

        {

        DoCancelOperation();

        }

    /**

     * @see MNcdOperation::Progress()

     */

    TNcdProgress Progress() const

        {

        return DoProgress();

        }

    /**

     * @see MNcdOperation::CompleteQuery()

     */    

    void CompleteQueryL( MNcdQuery& aQuery )

        {

        DoCompleteQueryL( aQuery );

        }

    /**

     * @see MNcdOperation::Node()

     */

    MNcdNode* Node()

        {

        return DoNode();

        }

protected:

    /**

     * ConstructorL

     *

     * @note CNcdBaseOperationProxy::ConstructL also needs to be called when the child classes

     * initialize themselves in their own ConstructL functions.

     *

     * @see CNcdBaseOperationProxy::ConstructL

     */ 

    CNcdOperation( MNcdClientLocalizer* aLocalizer ) : 

        CNcdBaseOperationProxy( aLocalizer ) 

        {

        }

    const TAny* QueryInterfaceL( TInt aInterfaceId ) const

        {

        const TAny* result = NULL;

        switch( aInterfaceId )

            {

            case T1::KInterfaceUid:             result = static_cast< const T1* >( this ); break;

            case MNcdOperation::KInterfaceUid:  result = static_cast< const MNcdOperation* >( this ); break;

            case MCatalogsBase::KInterfaceUid:  result = static_cast< const MCatalogsBase* >( this ); break;                        

            default: break;

            }

        if( result != NULL )

            {

            AddRef();

            }

        return result;

        }

    };

#endif // C_NCDOPERATION_H