1/*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 *           (C) 2000 Simon Hausmann <hausmann@kde.org>
4 * Copyright (C) 2006, 2009 Apple Inc. All rights reserved.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB.  If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 *
21 */
22
23#ifndef RenderPart_h
24#define RenderPart_h
25
26#include "RenderWidget.h"
27
28namespace WebCore {
29
30// Renderer for frames via RenderFrameBase, and plug-ins via RenderEmbeddedObject.
31class RenderPart : public RenderWidget {
32public:
33    explicit RenderPart(Element*);
34    virtual ~RenderPart();
35
36    virtual void setWidget(PassRefPtr<Widget>);
37    virtual void viewCleared();
38
39#if USE(ACCELERATED_COMPOSITING)
40    bool requiresAcceleratedCompositing() const;
41#endif
42
43    virtual bool needsPreferredWidthsRecalculation() const;
44    virtual RenderBox* embeddedContentBox() const;
45
46    virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) OVERRIDE;
47
48protected:
49#if USE(ACCELERATED_COMPOSITING)
50    virtual bool requiresLayer() const;
51#endif
52
53private:
54    virtual bool isRenderPart() const { return true; }
55    virtual const char* renderName() const { return "RenderPart"; }
56};
57
58inline RenderPart* toRenderPart(RenderObject* object)
59{
60    ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isRenderPart());
61    return static_cast<RenderPart*>(object);
62}
63
64// This will catch anyone doing an unnecessary cast.
65void toRenderPart(const RenderPart*);
66
67}
68
69#endif
70