1 /* 2 * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org) 3 * Copyright (C) 2000 Frederik Holljen (frederik.holljen (at) hig.no) 4 * Copyright (C) 2001 Peter Kelly (pmk (at) post.com) 5 * Copyright (C) 2006 Samuel Weinig (sam.weinig (at) gmail.com) 6 * Copyright (C) 2004, 2008 Apple Inc. All rights reserved. 7 * 8 * This library is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Library General Public 10 * License as published by the Free Software Foundation; either 11 * version 2 of the License, or (at your option) any later version. 12 * 13 * This library is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Library General Public License for more details. 17 * 18 * You should have received a copy of the GNU Library General Public License 19 * along with this library; see the file COPYING.LIB. If not, write to 20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 21 * Boston, MA 02110-1301, USA. 22 * 23 */ 24 25 #ifndef TreeWalker_h 26 #define TreeWalker_h 27 28 #include "bindings/v8/ScriptWrappable.h" 29 #include "core/dom/NodeFilter.h" 30 #include "core/dom/Traversal.h" 31 #include "wtf/PassRefPtr.h" 32 #include "wtf/RefCounted.h" 33 34 namespace WebCore { 35 36 class ExceptionState; 37 38 class TreeWalker : public ScriptWrappable, public RefCounted<TreeWalker>, public Traversal { 39 public: 40 static PassRefPtr<TreeWalker> create(PassRefPtr<Node> rootNode, unsigned whatToShow, PassRefPtr<NodeFilter> filter) 41 { 42 return adoptRef(new TreeWalker(rootNode, whatToShow, filter)); 43 } 44 45 Node* currentNode() const { return m_current.get(); } 46 void setCurrentNode(PassRefPtr<Node>, ExceptionState&); 47 48 Node* parentNode(ScriptState*); 49 Node* firstChild(ScriptState*); 50 Node* lastChild(ScriptState*); 51 Node* previousSibling(ScriptState*); 52 Node* nextSibling(ScriptState*); 53 Node* previousNode(ScriptState*); 54 Node* nextNode(ScriptState*); 55 56 private: 57 TreeWalker(PassRefPtr<Node>, unsigned whatToShow, PassRefPtr<NodeFilter>); 58 59 Node* setCurrent(PassRefPtr<Node>); 60 61 RefPtr<Node> m_current; 62 }; 63 64 } // namespace WebCore 65 66 #endif // TreeWalker_h 67
