| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * Copyright (C) 2000 Frederik Holljen (frederik.holljen@hig.no) |
| * Copyright (C) 2001 Peter Kelly (pmk@post.com) |
| * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com) |
| * Copyright (C) 2004, 2008 Apple Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #ifndef NodeIterator_h |
| #define NodeIterator_h |
| |
| #include "bindings/core/v8/ScriptWrappable.h" |
| #include "core/dom/NodeFilter.h" |
| #include "core/dom/NodeIteratorBase.h" |
| #include "platform/heap/Handle.h" |
| |
| namespace blink { |
| |
| class ExceptionState; |
| |
| class NodeIterator final : public GarbageCollected<NodeIterator>, public ScriptWrappable, public NodeIteratorBase { |
| DEFINE_WRAPPERTYPEINFO(); |
| USING_GARBAGE_COLLECTED_MIXIN(NodeIterator); |
| public: |
| static NodeIterator* create(Node* rootNode, unsigned whatToShow, NodeFilter* filter) |
| { |
| return new NodeIterator(rootNode, whatToShow, filter); |
| } |
| |
| Node* nextNode(ExceptionState&); |
| Node* previousNode(ExceptionState&); |
| void detach(); |
| |
| Node* referenceNode() const { return m_referenceNode.node.get(); } |
| bool pointerBeforeReferenceNode() const { return m_referenceNode.isPointerBeforeNode; } |
| |
| // This function is called before any node is removed from the document tree. |
| void nodeWillBeRemoved(Node&); |
| |
| DECLARE_VIRTUAL_TRACE(); |
| |
| DECLARE_VIRTUAL_TRACE_WRAPPERS(); |
| |
| private: |
| NodeIterator(Node*, unsigned whatToShow, NodeFilter*); |
| |
| class NodePointer { |
| DISALLOW_NEW(); |
| public: |
| NodePointer(); |
| NodePointer(Node*, bool); |
| |
| void clear(); |
| bool moveToNext(Node* root); |
| bool moveToPrevious(Node* root); |
| |
| Member<Node> node; |
| bool isPointerBeforeNode; |
| |
| DEFINE_INLINE_TRACE() |
| { |
| visitor->trace(node); |
| } |
| }; |
| |
| void updateForNodeRemoval(Node& nodeToBeRemoved, NodePointer&) const; |
| |
| NodePointer m_referenceNode; |
| NodePointer m_candidateNode; |
| }; |
| |
| } // namespace blink |
| |
| #endif // NodeIterator_h |