Source/core/platform/mac/ScrollbarThemeMacOverlayAPI.h

/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 */

#ifndef ScrollbarThemeMacOverlayAPI_h
#define ScrollbarThemeMacOverlayAPI_h

#include "core/platform/mac/ScrollbarThemeMac.h"

typedef id ScrollbarPainter;

namespace WebCore {

class ScrollbarThemeMacOverlayAPI : public ScrollbarThemeMacCommon {
public:
    virtual void updateEnabledState(ScrollbarThemeClient*) OVERRIDE;
    virtual int scrollbarThickness(ScrollbarControlSize = RegularScrollbar) OVERRIDE;
    virtual bool usesOverlayScrollbars() const OVERRIDE;
    virtual void updateScrollbarOverlayStyle(ScrollbarThemeClient*) OVERRIDE;
    virtual ScrollbarButtonsPlacement buttonsPlacement() const OVERRIDE;

    virtual void registerScrollbar(ScrollbarThemeClient*) OVERRIDE;
    virtual void unregisterScrollbar(ScrollbarThemeClient*) OVERRIDE;

    void setNewPainterForScrollbar(ScrollbarThemeClient*, ScrollbarPainter);
    ScrollbarPainter painterForScrollbar(ScrollbarThemeClient*);

    virtual void paintTrackBackground(GraphicsContext*, ScrollbarThemeClient*, const IntRect&) OVERRIDE;
    virtual void paintThumb(GraphicsContext*, ScrollbarThemeClient*, const IntRect&) OVERRIDE;

protected:
    virtual IntRect trackRect(ScrollbarThemeClient*, bool painting = false) OVERRIDE;
    virtual IntRect backButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool painting = false) OVERRIDE;
    virtual IntRect forwardButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool painting = false) OVERRIDE;

    virtual bool hasButtons(ScrollbarThemeClient*) OVERRIDE { return false; }
    virtual bool hasThumb(ScrollbarThemeClient*) OVERRIDE;

    virtual int minimumThumbLength(ScrollbarThemeClient*) OVERRIDE;
};

}

#endif