1 /*

     2 * Copyright (c) 2007 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:  Widget interface with utilities for scrollbar widget.

    15  *

    16 */

    17 

    18 

    19 #ifndef ALF_SCROLLEVENTS_H

    20 #define ALF_SCROLLEVENTS_H

    21 

    22 // WidgetModel Includes

    23 #include <alf/alfwidgetevents.h>

    24 

    25 // Widget Includes

    26 #include <alf/ialfscrollbarwidget.h>

    27 #include <alf/ialfscrollbardefaultbaseelement.h>

    28 

    29 namespace Alf

    30     {

    31     // forward declaration

    32     class IAlfScrollBarDefaultBaseElement;    

    33 

    34     /**

    35      *  Flags to indicate the changes being done in the scrollbar model

    36      *  ENoChange Flag to indicate no scrollbar model data is changed 

    37      *  ESpanChanged Flag to indicate Span is changed

    38      *  EViewLengthChanged Flag to indicate view length is changed

    39      *  EViewStartPosChanged Flag to indicate view start position is changed

    40      *  EFocusPosChanged Flag to indicate focus position is changed

    41      *

    42      *  @since S60 ?S60_version

    43      */

    44     enum ScrollModelChangeMask

    45         {

    46         ENoChange             = 0, // Flag if scrollbar model data is changed

    47         ESpanChanged          = 1, // Flag to indicate Span is changed 

    48         EViewLengthChanged    = 2, // Flag to indicate view length is changed

    49         EViewStartPosChanged  = 4, // Flag if view start position is changed 

    50         };

    51 

    52     /**

    53      *  This structure is used to send data along with 

    54      * EEventScrollModelChanged scroll event

    55      *

    56      *  @since S60 ?S60_version

    57      */

    58     struct ScrollModelChangedEventData

    59         {

    60         int mSpan;          // Span 

    61         int mViewLength;    // View Length 

    62         int mViewStartPos;  // View Start position 

    63         int mChangedMask;   // combination (ORing) of one or more 

    64                             // TScrollModelChangeMask enums

    65         };

    66 

    67     } // namespace Alf

    68 

    69 #endif // IALF_SCROLLEVENTS_H

    70 //End Of File