/*
 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
 *           (C) 1999 Antti Koivisto (koivisto@kde.org)
 *           (C) 2001 Dirk Mueller (mueller@kde.org)
 * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
 * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
 *
 * 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.
 */

#include "config.h"
#include "core/dom/TagCollection.h"

#include "core/dom/NodeRareData.h"
#include "wtf/Assertions.h"

namespace blink {

TagCollection::TagCollection(ContainerNode& rootNode, CollectionType type, const AtomicString& namespaceURI, const AtomicString& localName)
    : HTMLCollection(rootNode, type, DoesNotOverrideItemAfter)
    , m_namespaceURI(namespaceURI)
    , m_localName(localName)
{
    ASSERT(m_namespaceURI.isNull() || !m_namespaceURI.isEmpty());
}

TagCollection::~TagCollection()
{
#if !ENABLE(OILPAN)
    if (m_namespaceURI == starAtom)
        ownerNode().nodeLists()->removeCache(this, type(), m_localName);
    else
        ownerNode().nodeLists()->removeCache(this, m_namespaceURI, m_localName);
#endif
}

bool TagCollection::elementMatches(const Element& testNode) const
{
    // Implements http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#concept-getelementsbytagnamens
    if (m_localName != starAtom && m_localName != testNode.localName())
        return false;

    return m_namespaceURI == starAtom || m_namespaceURI == testNode.namespaceURI();
}

} // namespace blink