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 WebCore {
33
34 class InsertionPoint;
35
36 namespace NodeRenderingTraversal {
37
38 class ParentDetails {
39 public:
ParentDetails()40 ParentDetails()
41 : m_insertionPoint(0)
42 , m_resetStyleInheritance(false)
43 { }
44
insertionPoint()45 const InsertionPoint* insertionPoint() const { return m_insertionPoint; }
resetStyleInheritance()46 bool resetStyleInheritance() const { return m_resetStyleInheritance; }
47
48 void didTraverseInsertionPoint(const InsertionPoint*);
49 void didTraverseShadowRoot(const ShadowRoot*);
50
51 bool operator==(const ParentDetails& other)
52 {
53 return m_insertionPoint == other.m_insertionPoint
54 && m_resetStyleInheritance == other.m_resetStyleInheritance;
55 }
56
57 private:
58 const InsertionPoint* m_insertionPoint;
59 bool m_resetStyleInheritance;
60 };
61
62 ContainerNode* parent(const Node*);
63 ContainerNode* parent(const Node*, ParentDetails*);
64 Node* nextSibling(const Node*);
65 Node* previousSibling(const Node*);
66
parent(const Node * node)67 inline ContainerNode* parent(const Node* node)
68 {
69 ParentDetails unusedDetails;
70 return parent(node, &unusedDetails);
71 }
72
parentElement(const Node * node)73 inline Element* parentElement(const Node* node)
74 {
75 ParentDetails unusedDetails;
76 Node* found = parent(node, &unusedDetails);
77 return found && found->isElementNode() ? toElement(found) : 0;
78 }
79
80 }
81
82 } // namespace WebCore
83
84 #endif
85