1 /*

     2 * Copyright (c) 2002 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 *     MFLDFileListBoxObserver defines an abstract interface to observe

    16 *     file list box events.

    17 *

    18 */

    19 

    20 

    21 

    22 #ifndef __MFLDFILELISTBOXOBSERVER_H__

    23 #define __MFLDFILELISTBOXOBSERVER_H__

    24 

    25 // INTERNAL INCLUDES

    26 

    27 // EXTERNAL INCLUDES

    28 #include <e32base.h>

    29 

    30 //  FORWARD DECLARATIONS

    31 class RWindow;

    32 

    33 // CLASS DEFINITION

    34 

    35 /**

    36 * MFLDFileListBoxObserver defines an abstract interface to observe

    37 * file list box events.

    38 */

    39 class MFLDFileListBoxObserver

    40     {

    41     public:     // Enumerations

    42         enum TFileListBoxEvent

    43             {

    44             EFocusChanged = 1,

    45             EListBoxClosed,

    46             EOtherKeyEvent,

    47             EVideoPreview,

    48             EVideoPreviewSelected,

    49             EVideoPreviewCanceled

    50             };

    51 

    52 		enum TFileListSoftKeyState

    53 		    {

    54    		    EToneSelectionSoftKeyState = 1,

    55 		    EPreviewSoftKeyState,

    56 		    EPreviewSelectSoftKeyState

    57     		};

    58 

    59     protected:  // Constructors and destructors

    60 

    61         /**

    62         * Destructor.

    63         */

    64         virtual ~MFLDFileListBoxObserver() {}

    65 

    66     public:     // New methods

    67 

    68         /**

    69         * Receives information about a file list box event

    70         * @param aEvent The event type that happened

    71         * @param aFileName The file name that is currently focused, or KNullDesC

    72         * construct different components using existing window.

    73 		*/

    74         virtual void HandleFileListBoxEventL( TFileListBoxEvent aEvent,

    75             const TDesC& aFileName = KNullDesC ) = 0;

    76 

    77         /**

    78         * Method for listbox to receive current state of the softkeys.

    79         * @param aSoftKeyState This parameter will return the softkey state

    80         * TFileListSoftKeyState as a return parameter

    81 		*/

    82         virtual void HandleSoftKeyState( TFileListSoftKeyState& aSoftKeyState ) = 0;

    83 

    84     };

    85 

    86 #endif      //  __MFLDFILELISTBOXOBSERVER_H__

    87 

    88 // End of File