1/*
2 * Copyright (C) 2009 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 RenderObjectChildList_h
27#define RenderObjectChildList_h
28
29#include <wtf/Forward.h>
30
31namespace WebCore {
32
33class RenderObject;
34
35class RenderObjectChildList {
36public:
37    RenderObjectChildList()
38        : m_firstChild(0)
39        , m_lastChild(0)
40    {
41    }
42
43    RenderObject* firstChild() const { return m_firstChild; }
44    RenderObject* lastChild() const { return m_lastChild; }
45
46    // FIXME: Temporary while RenderBox still exists. Eventually this will just happen during insert/append/remove methods on the child list, and nobody
47    // will need to manipulate firstChild or lastChild directly.
48    void setFirstChild(RenderObject* child) { m_firstChild = child; }
49    void setLastChild(RenderObject* child) { m_lastChild = child; }
50
51    void destroyLeftoverChildren();
52
53    RenderObject* removeChildNode(RenderObject* owner, RenderObject*, bool notifyRenderer = true);
54    void insertChildNode(RenderObject* owner, RenderObject* newChild, RenderObject* beforeChild, bool notifyRenderer = true);
55    void appendChildNode(RenderObject* owner, RenderObject* newChild, bool notifyRenderer = true)
56    {
57        insertChildNode(owner, newChild, 0, notifyRenderer);
58    }
59
60private:
61    RenderObject* m_firstChild;
62    RenderObject* m_lastChild;
63};
64
65} // namespace WebCore
66
67#endif // RenderObjectChildList_h
68