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: 41 ParentDetails() 42 : m_insertionPoint(0) 43 { } 44 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 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