#pragma once
#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();
WEBCORE_EXPORT void moveWidgets();
WEBCORE_EXPORT static unsigned s_widgetHierarchyUpdateSuspendCount;
};
class RenderWidget : public RenderReplaced, private OverlapTestRequestClient {
public:
virtual ~RenderWidget();
HTMLFrameOwnerElement& frameOwnerElement() const { return downcast<HTMLFrameOwnerElement>(nodeForNonAnonymous()); }
Widget* widget() const { return m_widget.get(); }
WEBCORE_EXPORT void setWidget(RefPtr<Widget>&&);
static RenderWidget* find(const Widget*);
enum class ChildWidgetState { Valid, Destroyed };
ChildWidgetState updateWidgetPosition() WARN_UNUSED_RETURN;
WEBCORE_EXPORT IntRect windowClipRect() const;
bool requiresAcceleratedCompositing() const;
WeakPtr<RenderWidget> createWeakPtr() { return m_weakPtrFactory.createWeakPtr(); }
void ref() { ++m_refCount; }
void deref();
protected:
RenderWidget(HTMLFrameOwnerElement&, RenderStyle&&);
void styleDidChange(StyleDifference, const RenderStyle* oldStyle) final;
void layout() override;
void paint(PaintInfo&, const LayoutPoint&) override;
bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) override;
virtual void paintContents(PaintInfo&, const LayoutPoint&);
bool requiresLayer() const override;
private:
void element() const = delete;
bool isWidget() const final { return true; }
bool needsPreferredWidthsRecalculation() const final;
RenderBox* embeddedContentBox() const final;
void willBeDestroyed() final;
void setSelectionState(SelectionState) final;
void setOverlapTestResult(bool) final;
bool setWidgetGeometry(const LayoutRect&);
bool updateWidgetGeometry();
WeakPtrFactory<RenderWidget> m_weakPtrFactory;
RefPtr<Widget> m_widget;
IntRect m_clipRect; unsigned m_refCount { 1 };
};
inline void RenderWidget::deref()
{
ASSERT(m_refCount);
if (!--m_refCount)
delete this;
}
}
SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderWidget, isWidget())