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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* Copyright (C) 2004, 2005, 2006, 2009, 2010 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef RenderWidget_h
#define RenderWidget_h
#include "OverlapTestRequestClient.h"
#include "RenderReplaced.h"
#include "Widget.h"
namespace WebCore {
class WidgetHierarchyUpdatesSuspensionScope {
public:
WidgetHierarchyUpdatesSuspensionScope()
{
s_widgetHierarchyUpdateSuspendCount++;
}
~WidgetHierarchyUpdatesSuspensionScope()
{
ASSERT(s_widgetHierarchyUpdateSuspendCount);
if (s_widgetHierarchyUpdateSuspendCount == 1)
moveWidgets();
s_widgetHierarchyUpdateSuspendCount--;
}
static bool isSuspended() { return s_widgetHierarchyUpdateSuspendCount; }
static void scheduleWidgetToMove(Widget* widget, FrameView* frame) { widgetNewParentMap().set(widget, frame); }
private:
typedef HashMap<RefPtr<Widget>, FrameView*> WidgetToParentMap;
static WidgetToParentMap& widgetNewParentMap();
void moveWidgets();
static unsigned s_widgetHierarchyUpdateSuspendCount;
};
class RenderWidget : public RenderReplaced, private OverlapTestRequestClient {
public:
virtual ~RenderWidget();
Widget* widget() const { return m_widget.get(); }
virtual void setWidget(PassRefPtr<Widget>);
static RenderWidget* find(const Widget*);
void updateWidgetPosition();
void widgetPositionsUpdated();
IntRect windowClipRect() const;
void notifyWidget(WidgetNotification);
RenderArena* ref() { ++m_refCount; return renderArena(); }
void deref(RenderArena*);
protected:
RenderWidget(Node*);
FrameView* frameView() const { return m_frameView; }
void clearWidget();
virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
virtual void layout();
virtual void paint(PaintInfo&, const LayoutPoint&);
virtual CursorDirective getCursor(const LayoutPoint&, Cursor&) const;
virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) OVERRIDE;
private:
virtual bool isWidget() const { return true; }
virtual void willBeDestroyed();
virtual void destroy();
virtual void setSelectionState(SelectionState);
virtual void setOverlapTestResult(bool);
bool setWidgetGeometry(const LayoutRect&);
bool updateWidgetGeometry();
RefPtr<Widget> m_widget;
FrameView* m_frameView;
IntRect m_clipRect; // The rectangle needs to remain correct after scrolling, so it is stored in content view coordinates, and not clipped to window.
int m_refCount;
};
inline RenderWidget* toRenderWidget(RenderObject* object)
{
ASSERT(!object || object->isWidget());
return static_cast<RenderWidget*>(object);
}
inline const RenderWidget* toRenderWidget(const RenderObject* object)
{
ASSERT(!object || object->isWidget());
return static_cast<const RenderWidget*>(object);
}
// This will catch anyone doing an unnecessary cast.
void toRenderWidget(const RenderWidget*);
} // namespace WebCore
#endif // RenderWidget_h
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