73 lines
2.5 KiB
C++
73 lines
2.5 KiB
C++
/*
|
|
* 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) 2004-2019 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.
|
|
*
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "ExceptionOr.h"
|
|
#include "NodeFilter.h"
|
|
#include "ScriptWrappable.h"
|
|
#include "Traversal.h"
|
|
#include <wtf/IsoMalloc.h>
|
|
|
|
namespace WebCore {
|
|
|
|
class NodeIterator final : public ScriptWrappable, public RefCounted<NodeIterator>, public NodeIteratorBase {
|
|
WTF_MAKE_ISO_ALLOCATED_EXPORT(NodeIterator, WEBCORE_EXPORT);
|
|
public:
|
|
static Ref<NodeIterator> create(Node&, unsigned whatToShow, RefPtr<NodeFilter>&&);
|
|
WEBCORE_EXPORT ~NodeIterator();
|
|
|
|
WEBCORE_EXPORT ExceptionOr<RefPtr<Node>> nextNode();
|
|
WEBCORE_EXPORT ExceptionOr<RefPtr<Node>> previousNode();
|
|
void detach() { } // This is now a no-op as per the DOM specification.
|
|
|
|
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&);
|
|
|
|
private:
|
|
NodeIterator(Node&, unsigned whatToShow, RefPtr<NodeFilter>&&);
|
|
|
|
struct NodePointer {
|
|
RefPtr<Node> node;
|
|
bool isPointerBeforeNode { true };
|
|
|
|
NodePointer() = default;
|
|
NodePointer(Node&, bool);
|
|
|
|
void clear();
|
|
bool moveToNext(Node& root);
|
|
bool moveToPrevious(Node& root);
|
|
};
|
|
|
|
void updateForNodeRemoval(Node& nodeToBeRemoved, NodePointer&) const;
|
|
|
|
NodePointer m_referenceNode;
|
|
NodePointer m_candidateNode;
|
|
};
|
|
|
|
} // namespace WebCore
|