diff options
author | Steve Block <steveblock@google.com> | 2011-05-06 11:45:16 +0100 |
---|---|---|
committer | Steve Block <steveblock@google.com> | 2011-05-12 13:44:10 +0100 |
commit | cad810f21b803229eb11403f9209855525a25d57 (patch) | |
tree | 29a6fd0279be608e0fe9ffe9841f722f0f4e4269 /Source/WebCore/dom/NodeIterator.h | |
parent | 121b0cf4517156d0ac5111caf9830c51b69bae8f (diff) | |
download | external_webkit-cad810f21b803229eb11403f9209855525a25d57.zip external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.gz external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.bz2 |
Merge WebKit at r75315: Initial merge by git.
Change-Id: I570314b346ce101c935ed22a626b48c2af266b84
Diffstat (limited to 'Source/WebCore/dom/NodeIterator.h')
-rw-r--r-- | Source/WebCore/dom/NodeIterator.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/Source/WebCore/dom/NodeIterator.h b/Source/WebCore/dom/NodeIterator.h new file mode 100644 index 0000000..3eec49a --- /dev/null +++ b/Source/WebCore/dom/NodeIterator.h @@ -0,0 +1,82 @@ +/* + * 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 "NodeFilter.h" +#include "Traversal.h" +#include <wtf/PassRefPtr.h> +#include <wtf/RefCounted.h> + +namespace WebCore { + + typedef int ExceptionCode; + + class NodeIterator : public RefCounted<NodeIterator>, public Traversal { + public: + static PassRefPtr<NodeIterator> create(PassRefPtr<Node> rootNode, unsigned whatToShow, PassRefPtr<NodeFilter> filter, bool expandEntityReferences) + { + return adoptRef(new NodeIterator(rootNode, whatToShow, filter, expandEntityReferences)); + } + ~NodeIterator(); + + PassRefPtr<Node> nextNode(ScriptState*, ExceptionCode&); + PassRefPtr<Node> previousNode(ScriptState*, ExceptionCode&); + 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*); + + // Do not call these functions. They are just scaffolding to support the Objective-C bindings. + // They operate in the main thread normal world, and they swallow JS exceptions. + PassRefPtr<Node> nextNode(ExceptionCode& ec) { return nextNode(scriptStateFromNode(mainThreadNormalWorld(), referenceNode()), ec); } + PassRefPtr<Node> previousNode(ExceptionCode& ec) { return previousNode(scriptStateFromNode(mainThreadNormalWorld(), referenceNode()), ec); } + + private: + NodeIterator(PassRefPtr<Node>, unsigned whatToShow, PassRefPtr<NodeFilter>, bool expandEntityReferences); + + 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 |