/*
* Copyright (C) 2013 Apple Inc. All rights reserved.
* Copyright (C) 2014 Samsung Electronics. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef EmptyNodeList_h
#define EmptyNodeList_h
#include "core/dom/NodeList.h"
#include "wtf/RefPtr.h"
namespace WebCore {
class EmptyNodeList FINAL : public NodeList {
public:
static PassRefPtr<EmptyNodeList> create(Node& rootNode)
{
return adoptRef(new EmptyNodeList(rootNode));
}
virtual ~EmptyNodeList();
Node& ownerNode() const { return *m_owner; }
private:
explicit EmptyNodeList(Node& rootNode) : m_owner(rootNode) { }
virtual unsigned length() const OVERRIDE { return 0; }
virtual Node* item(unsigned) const OVERRIDE { return 0; }
virtual bool isEmptyNodeList() const OVERRIDE { return true; }
virtual Node* virtualOwnerNode() const OVERRIDE;
RefPtr<Node> m_owner;
};
DEFINE_TYPE_CASTS(EmptyNodeList, NodeList, nodeList, nodeList->isEmptyNodeList(), nodeList.isEmptyNodeList());
} // namespace WebCore
#endif // EmptyNodeList_h