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#ifndef FramelessScrollView_h
#define FramelessScrollView_h
#include "platform/PlatformExport.h"
#include "platform/scroll/ScrollView.h"
namespace WebCore {
class FramelessScrollViewClient;
class PlatformGestureEvent;
class PlatformKeyboardEvent;
class PlatformMouseEvent;
class PlatformTouchEvent;
class PlatformWheelEvent;
// A FramelessScrollView is a ScrollView that can be used to render custom
// content, which does not have an associated LocalFrame.
//
// NOTE: It may be better to just develop a custom subclass of Widget that
// can have scroll bars for this instead of trying to reuse ScrollView.
//
class PLATFORM_EXPORT FramelessScrollView : public ScrollView {
public:
FramelessScrollView() : m_client(0) { }
virtual ~FramelessScrollView();
FramelessScrollViewClient* client() const { return m_client; }
void setClient(FramelessScrollViewClient* client) { m_client = client; }
// Event handlers that subclasses must implement.
virtual bool handleMouseDownEvent(const PlatformMouseEvent&) = 0;
virtual bool handleMouseMoveEvent(const PlatformMouseEvent&) = 0;
virtual bool handleMouseReleaseEvent(const PlatformMouseEvent&) = 0;
virtual bool handleWheelEvent(const PlatformWheelEvent&) = 0;
virtual bool handleKeyEvent(const PlatformKeyboardEvent&) = 0;
virtual bool handleTouchEvent(const PlatformTouchEvent&) = 0;
virtual bool handleGestureEvent(const PlatformGestureEvent&) = 0;
// ScrollableArea public methods:
virtual void invalidateScrollbarRect(Scrollbar*, const IntRect&) OVERRIDE;
virtual bool isActive() const OVERRIDE;
virtual bool scrollbarsCanBeActive() const OVERRIDE;
virtual IntRect scrollableAreaBoundingBox() const OVERRIDE;
// Widget public methods:
virtual void invalidateRect(const IntRect&) OVERRIDE;
// ScrollView public methods:
virtual HostWindow* hostWindow() const OVERRIDE;
virtual IntRect windowClipRect(IncludeScrollbarsInRect = ExcludeScrollbars) const OVERRIDE;
protected:
// ScrollView protected methods:
virtual void paintContents(GraphicsContext*, const IntRect&) OVERRIDE;
virtual void contentsResized() OVERRIDE;
virtual void scrollbarExistenceDidChange() OVERRIDE;
private:
FramelessScrollViewClient* m_client;
};
} // namespace WebCore
#endif