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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2001 Peter Kelly (pmk@post.com)
* (C) 2001 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2004, 2005, 2006, 2007 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.
*/
#include "config.h"
#include "Attribute.h"
#include "Attr.h"
#include "Element.h"
#include <wtf/HashMap.h>
#include <wtf/UnusedParam.h>
namespace WebCore {
typedef HashMap<Attribute*, Attr*> AttributeAttrMap;
static AttributeAttrMap& attributeAttrMap()
{
DEFINE_STATIC_LOCAL(AttributeAttrMap, map, ());
return map;
}
PassRefPtr<Attribute> Attribute::clone() const
{
return adoptRef(new Attribute(m_name, m_value, m_isMappedAttribute, m_styleDecl.get()));
}
Attr* Attribute::attr() const
{
if (m_hasAttr) {
ASSERT(attributeAttrMap().contains(const_cast<Attribute*>(this)));
return attributeAttrMap().get(const_cast<Attribute*>(this));
}
ASSERT(!attributeAttrMap().contains(const_cast<Attribute*>(this)));
return 0;
}
PassRefPtr<Attr> Attribute::createAttrIfNeeded(Element* e)
{
RefPtr<Attr> r;
if (m_hasAttr) {
ASSERT(attributeAttrMap().contains(this));
r = attributeAttrMap().get(this);
} else {
ASSERT(!attributeAttrMap().contains(this));
r = Attr::create(e, e->document(), this); // This will end up calling Attribute::bindAttr.
ASSERT(attributeAttrMap().contains(this));
}
return r.release();
}
void Attribute::bindAttr(Attr* attr)
{
ASSERT(!m_hasAttr);
ASSERT(!attributeAttrMap().contains(this));
attributeAttrMap().set(this, attr);
m_hasAttr = true;
}
void Attribute::unbindAttr(Attr* attr)
{
ASSERT(m_hasAttr);
ASSERT(attributeAttrMap().contains(this));
ASSERT_UNUSED(attr, attributeAttrMap().get(this) == attr);
attributeAttrMap().remove(this);
m_hasAttr = false;
}
} // namespace WebCore
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