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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 "RenderStyleConstants.h"
30 #include <wtf/Forward.h>
31 
32 namespace WebCore {
33 
34 class RenderObject;
35 
36 class RenderObjectChildList {
37 public:
RenderObjectChildList()38     RenderObjectChildList()
39         : m_firstChild(0)
40         , m_lastChild(0)
41     {
42     }
43 
firstChild()44     RenderObject* firstChild() const { return m_firstChild; }
lastChild()45     RenderObject* lastChild() const { return m_lastChild; }
46 
47     // FIXME: Temporary while RenderBox still exists. Eventually this will just happen during insert/append/remove methods on the child list, and nobody
48     // will need to manipulate firstChild or lastChild directly.
setFirstChild(RenderObject * child)49     void setFirstChild(RenderObject* child) { m_firstChild = child; }
setLastChild(RenderObject * child)50     void setLastChild(RenderObject* child) { m_lastChild = child; }
51 
52     void destroyLeftoverChildren();
53 
54     RenderObject* removeChildNode(RenderObject* owner, RenderObject*, bool fullRemove = true);
55     void appendChildNode(RenderObject* owner, RenderObject*, bool fullAppend = true);
56     void insertChildNode(RenderObject* owner, RenderObject* child, RenderObject* before, bool fullInsert = true);
57 
58     void updateBeforeAfterContent(RenderObject* owner, PseudoId type, const RenderObject* styledObject = 0);
59     RenderObject* beforePseudoElementRenderer(const RenderObject* owner) const;
60     RenderObject* afterPseudoElementRenderer(const RenderObject* owner) const;
61 
62 private:
63     RenderObject* m_firstChild;
64     RenderObject* m_lastChild;
65 };
66 
67 } // namespace WebCore
68 
69 #endif // RenderObjectChildList_h
70