#include "config.h"
#include "RenderPart.h"
#include "Frame.h"
#include "FrameView.h"
#include "HTMLFrameElementBase.h"
#include "PluginViewBase.h"
#include "RenderSVGRoot.h"
#include "RenderView.h"
using namespace std;
namespace WebCore {
RenderPart::RenderPart(Element* node)
: RenderWidget(node)
{
setInline(false);
}
RenderPart::~RenderPart()
{
clearWidget();
}
void RenderPart::setWidget(PassRefPtr<Widget> widget)
{
if (widget == this->widget())
return;
RenderWidget::setWidget(widget);
viewCleared();
}
void RenderPart::viewCleared()
{
}
#if USE(ACCELERATED_COMPOSITING)
bool RenderPart::requiresLayer() const
{
if (RenderWidget::requiresLayer())
return true;
return requiresAcceleratedCompositing();
}
bool RenderPart::requiresAcceleratedCompositing() const
{
if (widget() && widget()->isPluginViewBase() && static_cast<PluginViewBase*>(widget())->platformLayer())
return true;
if (!node() || !node()->isFrameOwnerElement())
return false;
HTMLFrameOwnerElement* element = static_cast<HTMLFrameOwnerElement*>(node());
if (Document* contentDocument = element->contentDocument()) {
if (RenderView* view = contentDocument->renderView())
return view->usesCompositing();
}
return false;
}
#endif
bool RenderPart::needsPreferredWidthsRecalculation() const
{
if (RenderWidget::needsPreferredWidthsRecalculation())
return true;
return embeddedContentBox();
}
RenderBox* RenderPart::embeddedContentBox() const
{
if (!node() || !widget() || !widget()->isFrameView())
return 0;
return static_cast<FrameView*>(widget())->embeddedContentBox();
}
}