1/*
2 * Copyright (C) 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef RenderMedia_h
27#define RenderMedia_h
28
29#include "core/rendering/RenderImage.h"
30
31namespace blink {
32
33class HTMLMediaElement;
34
35class RenderMedia : public RenderImage {
36public:
37    explicit RenderMedia(HTMLMediaElement*);
38    virtual ~RenderMedia();
39    virtual void trace(Visitor*) OVERRIDE;
40
41    RenderObject* firstChild() const { ASSERT(children() == virtualChildren()); return children()->firstChild(); }
42    RenderObject* lastChild() const { ASSERT(children() == virtualChildren()); return children()->lastChild(); }
43
44    // If you have a RenderMedia, use firstChild or lastChild instead.
45    void slowFirstChild() const WTF_DELETED_FUNCTION;
46    void slowLastChild() const WTF_DELETED_FUNCTION;
47
48    const RenderObjectChildList* children() const { return &m_children; }
49    RenderObjectChildList* children() { return &m_children; }
50
51    HTMLMediaElement* mediaElement() const;
52
53protected:
54    virtual void layout() OVERRIDE;
55
56private:
57    virtual RenderObjectChildList* virtualChildren() OVERRIDE FINAL { return children(); }
58    virtual const RenderObjectChildList* virtualChildren() const OVERRIDE FINAL { return children(); }
59
60    virtual LayerType layerTypeRequired() const OVERRIDE { return NormalLayer; }
61
62    // FIXME: RenderMedia::layout makes assumptions about what children are allowed
63    // so we can't support generated content.
64    virtual bool canHaveGeneratedChildren() const OVERRIDE FINAL { return false; }
65    virtual bool canHaveChildren() const OVERRIDE FINAL { return true; }
66    virtual bool isChildAllowed(RenderObject*, RenderStyle*) const override final;
67
68    virtual const char* renderName() const OVERRIDE { return "RenderMedia"; }
69    virtual bool isMedia() const OVERRIDE FINAL { return true; }
70    virtual bool isImage() const OVERRIDE FINAL { return false; }
71    virtual void paintReplaced(PaintInfo&, const LayoutPoint&) OVERRIDE;
72
73    RenderObjectChildList m_children;
74};
75
76DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderMedia, isMedia());
77
78} // namespace blink
79
80#endif // RenderMedia_h
81