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: Interface class for the focus strategy

    15 *

    16 */

    17 

    18 #ifndef MMRFOCUSSTRATEGY_H

    19 #define MMRFOCUSSTRATEGY_H

    20 

    21 // INCLUDES

    22 #include <e32base.h>

    23 

    24 // FORWARD DECLARATIONS

    25 class CESMRField;

    26 class MESMRFieldStorage;

    27 

    28 // CLASS DECLARATIONS

    29 

    30 class MMRFocusStrategy

    31     {

    32     public: // Types

    33         /**

    34          * Event types where the strategy will react on.

    35          */

    36         enum TFocusEventType

    37             {

    38             EFocusPointerEvent,

    39             EFocusKeyEvent

    40             };

    41 

    42     public: // Destructor

    43         virtual ~MMRFocusStrategy() { }

    44         

    45     public: // Interface

    46         

    47         /**

    48          * Called to initialize the focus

    49          */

    50         virtual void InitializeFocus() = 0;

    51         

    52         /**

    53          * Called when the event occurs

    54          *

    55          * @param aEventType Type of the event e.g. key, pointer

    56          */

    57         virtual void EventOccured( TFocusEventType aEventType ) = 0;

    58 

    59         /**

    60          * Returns either the focus is on or off

    61          * 

    62          * @return ETrue if the focus is visible

    63          */

    64         virtual TBool IsFocusVisible() const = 0;

    65     };

    66 #endif // MMRFOCUSSTRATEGY_H

    67 

    68 // End of file