Source/WebCore/rendering/RenderPart.h

/*
 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
 *           (C) 2000 Simon Hausmann <hausmann@kde.org>
 * Copyright (C) 2006, 2009 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 RenderPart_h
#define RenderPart_h

#include "RenderWidget.h"

namespace WebCore {

// Renderer for frames via RenderFrameBase, and plug-ins via RenderEmbeddedObject.
class RenderPart : public RenderWidget {
public:
    RenderPart(Element*);
    virtual ~RenderPart();

    virtual void setWidget(PassRefPtr<Widget>);
    virtual void viewCleared();

#if USE(ACCELERATED_COMPOSITING)
    bool requiresAcceleratedCompositing() const;
#endif

protected:
#if USE(ACCELERATED_COMPOSITING)
    virtual bool requiresLayer() const;
#endif

private:
    virtual bool isRenderPart() const { return true; }
    virtual const char* renderName() const { return "RenderPart"; }
};

inline RenderPart* toRenderPart(RenderObject* object)
{
    ASSERT(!object || object->isRenderPart());
    return static_cast<RenderPart*>(object);
}

// This will catch anyone doing an unnecessary cast.
void toRenderPart(const RenderPart*);

}

#endif