/*

* Copyright (c) 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:   MNcdAsyncOperationObserver

*

*/

#ifndef NCD_ASYNC_OPERATION_OBSERVER_H

#define NCD_ASYNC_OPERATION_OBSERVER_H

/**

 * MNcdAsyncOperationObserver

 *

 * Provides callback function that may be called when an

 * asynchronous operation has been completed.

 *

 * @see CNcdActiveOperationObserver

 */

class MNcdAsyncOperationObserver

{

public:

    /**

     * This callback function may be called when an asynchronous operation

     * has been completed.

     *

     * @param aError Gives the error code of the completed operation.

     *

     * @since S60 v3.2

     */

    virtual void AsyncOperationComplete( TInt aError ) = 0; 

protected:

    /**

     * The destructor of an interface is set virtual to make sure that

     * the destructors of derived classes are called appropriately when the

     * object is destroyed.

     *

     * Destructor is defined as protected to prevent direct use of delete on 

     * observer interface pointer.

     *

     * @since S60 v3.2

     */

    virtual ~MNcdAsyncOperationObserver() { }

};

#endif // NCD_ASYNC_OPERATION_OBSERVER_H