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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* Copyright (C) 2004, 2005, 2006, 2009, 2010, 2013 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 "HTMLFrameOwnerElement.h"
#include "OverlapTestRequestClient.h"
#include "RenderReplaced.h"
#include "Widget.h"
#include <wtf/WeakPtr.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();
HTMLFrameOwnerElement& frameOwnerElement() const { return toHTMLFrameOwnerElement(nodeForNonAnonymous()); }
Widget* widget() const { return m_widget.get(); }
void setWidget(PassRefPtr<Widget>);
static RenderWidget* find(const Widget*);
void updateWidgetPosition();
IntRect windowClipRect() const;
#if USE(ACCELERATED_COMPOSITING)
bool requiresAcceleratedCompositing() const;
#endif
WeakPtr<RenderWidget> createWeakPtr() { return m_weakPtrFactory.createWeakPtr(); }
protected:
RenderWidget(HTMLFrameOwnerElement&, PassRef<RenderStyle>);
virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) override final;
virtual void layout() override;
virtual void paint(PaintInfo&, const LayoutPoint&) override;
virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) override;
virtual void paintContents(PaintInfo&, const LayoutPoint&);
#if USE(ACCELERATED_COMPOSITING)
virtual bool requiresLayer() const override;
#endif
private:
void element() const = delete;
virtual bool isWidget() const override final { return true; }
virtual bool needsPreferredWidthsRecalculation() const override final;
virtual RenderBox* embeddedContentBox() const override final;
virtual void willBeDestroyed() override final;
virtual void setSelectionState(SelectionState) override final;
virtual void setOverlapTestResult(bool) override final;
bool setWidgetGeometry(const LayoutRect&);
bool updateWidgetGeometry();
WeakPtrFactory<RenderWidget> m_weakPtrFactory;
RefPtr<Widget> m_widget;
IntRect m_clipRect; // The rectangle needs to remain correct after scrolling, so it is stored in content view coordinates, and not clipped to window.
};
RENDER_OBJECT_TYPE_CASTS(RenderWidget, isWidget())
} // namespace WebCore
#endif // RenderWidget_h
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