/*******************************************************************************

 * Copyright (c) 2005, 2010 Nokia Corporation and/or its subsidiary(-ies).

 * All rights reserved. This program and the accompanying materials

 * are made available under the terms of the Eclipse Public License v1.0

 * which accompanies this distribution, and is available at

 * http://www.eclipse.org/legal/epl-v10.html

 *

 * Contributors:

 *     Nokia Corporation - S60 implementation

 *******************************************************************************/

#ifndef SWTSCROLLBAR_H

#define SWTSCROLLBAR_H

#include <eiksbobs.h>

#include "eswtwidgetscore.h"

class CEikScrollBar;

class TEikScrollBarModel;

/**

 * CSwtScrollBar

 *

 * In eSWT all scrollbars must be non window owing the main reason being that

 * the scrollbars must draw at exact same time with the parent control. This

 * is especially essential in ScrolledComposite. If the scrollbars would be

 * window owing, they would draw too much ahead of the parents creating an

 * ugly visual effect when flicking the ScrolledComposite.

 * The drawback of having non window owing scrollbars is too many paint events

 * which affects on the speed of kinetic scrolling in lists.

 *

 * @lib eswt

 */

NONSHARABLE_CLASS(CSwtScrollBar)

        : public CBase

        , public MSwtScrollBar

{

public:

    CSwtScrollBar(MSwtDisplay& aDisplay, TSwtPeer aPeer, TInt aStyle,

    CEikScrollBar& aScrollBar, MSwtScrollable& aScrollable, TInt aMinimum,

    TInt aMaximum, TInt aPosition, TInt aThumbSpan, TBool aDoubleSpan,

    CEikScrollBar::TOrientation aOrientation);

    inline const CEikScrollBar& EikScrollBar() const;

    void DoSetThumbPositionL(TInt aPosition);

private:

    ~CSwtScrollBar();

    void SetModelL(TInt aPosition, TInt aMinimum, TInt aMaximum, TInt aThumbSpan);

// From MSwtScrollBar

public:

    TSwtPeer Dispose();

    TSize GetSize() const;

    void SetEnabled(TBool aEnabled);

    void SetVisible(TBool aVisible);

    TInt GetThumbPosition() const;

    void SetThumbPositionL(TInt aPosition);

    TInt GetThumbSpan() const;

    void SetThumbSpanL(TInt aThumbSpan);

    TInt GetMinimum() const;

    void SetMinimumL(TInt aMinimum);

    TInt GetMaximum() const;

    void SetMaximumL(TInt aMaximum);

    TInt GetIncrement() const;

    void SetIncrement(TInt aIncrement);

    TInt GetPageIncrement() const;

    void SetPageIncrement(TInt aPageIncrement);

    void SetValuesL(TInt aPosition, TInt aMinimum, TInt aMaximum,

                    TInt aThumbSpan, TInt aIncrement, TInt aPageIncrement);

#ifdef RD_SCALABLE_UI_V2

// From MEikScrollBarObserver

public:

    void HandleScrollEventL(CEikScrollBar* aScrollBar, TEikScrollEvent aEventType);

#endif

// Data

private:

    MSwtDisplay&    iDisplay;

    const TSwtPeer  iPeer;

    TInt  iStyle;

    CEikScrollBar&  iScrollBar;

    MSwtScrollable& iScrollable;

    TInt iIncrement;

    TInt iPageIncrement;

    TInt iMinimum;

    TInt iMaximum;

    TInt iThumbPosition;

    TInt iThumbSpan;

    TBool iDoubleSpan;

    CEikScrollBar::TOrientation iOrientation;

};

inline const CEikScrollBar& CSwtScrollBar::EikScrollBar() const

{

    return iScrollBar;

}

#endif // SWTSCROLLBAR_H