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Diffstat (limited to 'WebCore/dom/NodeIterator.h')
-rw-r--r-- | WebCore/dom/NodeIterator.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/WebCore/dom/NodeIterator.h b/WebCore/dom/NodeIterator.h new file mode 100644 index 0000000..b2a7c70 --- /dev/null +++ b/WebCore/dom/NodeIterator.h @@ -0,0 +1,74 @@ +/* + * 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 "Traversal.h" +#include <wtf/PassRefPtr.h> + +namespace WebCore { + + typedef int ExceptionCode; + + class NodeIterator : public Traversal { + public: + NodeIterator(PassRefPtr<Node>, unsigned whatToShow, PassRefPtr<NodeFilter>, bool expandEntityReferences); + virtual ~NodeIterator(); + + Node* nextNode(ExceptionCode&, KJS::JSValue*& exception); + Node* previousNode(ExceptionCode&, KJS::JSValue*& exception); + 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 notifyBeforeNodeRemoval(Node* nodeToBeRemoved); + + // For non-JS bindings. Silently ignores the JavaScript exception if any. + Node* nextNode(ExceptionCode& ec) { KJS::JSValue* exception; return nextNode(ec, exception); } + Node* previousNode(ExceptionCode& ec) { KJS::JSValue* exception; return previousNode(ec, exception); } + + private: + struct NodePointer { + RefPtr<Node> node; + bool isPointerBeforeNode; + NodePointer(); + NodePointer(PassRefPtr<Node>, bool); + void clear(); + bool moveToNext(Node* root); + bool moveToPrevious(Node* root); + }; + + void updateForNodeRemoval(Node* nodeToBeRemoved, NodePointer&) const; + + NodePointer m_referenceNode; + NodePointer m_candidateNode; + bool m_detached; + }; + +} // namespace WebCore + +#endif // NodeIterator_h |