1 /*
2 * Copyright (C) 2012 Google 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 are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Neither the name of Google Inc. nor the names of its
11 * contributors may be used to endorse or promote products derived from
12 * this software without specific prior written permission.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
15 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
16 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
17 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
18 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
19 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
20 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #ifndef NodeRenderingTraversal_h
28 #define NodeRenderingTraversal_h
29
30 #include "core/dom/Element.h"
31
32 namespace blink {
33
34 class InsertionPoint;
35 class RenderObject;
36
37 namespace NodeRenderingTraversal {
38
39 class ParentDetails {
40 public:
ParentDetails()41 ParentDetails()
42 : m_insertionPoint(0)
43 { }
44
insertionPoint()45 const InsertionPoint* insertionPoint() const { return m_insertionPoint; }
46
47 void didTraverseInsertionPoint(const InsertionPoint*);
48
49 bool operator==(const ParentDetails& other)
50 {
51 return m_insertionPoint == other.m_insertionPoint;
52 }
53
54 private:
55 const InsertionPoint* m_insertionPoint;
56 };
57
58 ContainerNode* parent(const Node*, ParentDetails* = 0);
59 bool contains(const ContainerNode*, const Node*);
60 Node* nextSibling(const Node*);
61 Node* previousSibling(const Node*);
62 Node* previous(const Node*, const Node* stayWithin);
63 Node* next(const Node*, const Node* stayWithin);
64 RenderObject* nextSiblingRenderer(const Node*);
65 RenderObject* previousSiblingRenderer(const Node*);
66 RenderObject* nextInTopLayer(const Element*);
67
parentElement(const Node * node)68 inline Element* parentElement(const Node* node)
69 {
70 ContainerNode* found = parent(node);
71 return found && found->isElementNode() ? toElement(found) : 0;
72 }
73
74 }
75
76 } // namespace blink
77
78 #endif
79