1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 

    18 #ifndef __MENUENGOBSERVER_H__

    19 #define __MENUENGOBSERVER_H__

    20 

    21 #include <e32base.h>

    22 

    23 /**

    24 * Menu Engine Observer.

    25 */

    26 NONSHARABLE_CLASS( MMenuEngObserver )

    27     {

    28 

    29 public:     // new methods

    30 

    31     /**

    32     * Engine events.

    33     * @param aFolder Events occurred in this folder. (0==unspecified.)

    34     * @param aEvents Events. A combination of TEvent bits.

    35     */

    36     virtual void EngineEvents( TInt aFolder, TInt aEvents ) = 0;

    37 

    38     /**

    39     * Unrecoverable Engine error. The engine stopped working and is useless.

    40     * Delete the engine.

    41     * @param aErr Error code.

    42     */

    43     virtual void EngineError( TInt aErr ) = 0;

    44     /**

    45      * Engine tree reload events. 

    46      * Happens when loading tree from Ram failed

    47      * and was reloaded from Rom.

    48      */

    49     virtual void EngineTreeReloaded() = 0;

    50 

    51     };

    52 

    53 #endif // __MENUENGOBSERVER_H__