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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) 2003, 2004, 2005, 2006, 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 Attribute_h
#define Attribute_h
#include "QualifiedName.h"
namespace WebCore {
class Attr;
class CSSStyleDeclaration;
class Element;
class NamedAttrMap;
// This has no counterpart in DOM.
// It is an internal representation of the node value of an Attr.
// The actual Attr with its value as a Text child is allocated only if needed.
class Attribute : public RefCounted<Attribute> {
friend class Attr;
friend class NamedAttrMap;
public:
static PassRefPtr<Attribute> create(const QualifiedName& name, const AtomicString& value)
{
return adoptRef(new Attribute(name, value));
}
virtual ~Attribute() { }
const AtomicString& value() const { return m_value; }
const AtomicString& prefix() const { return m_name.prefix(); }
const AtomicString& localName() const { return m_name.localName(); }
const AtomicString& namespaceURI() const { return m_name.namespaceURI(); }
const QualifiedName& name() const { return m_name; }
Attr* attr() const { return m_impl; }
PassRefPtr<Attr> createAttrIfNeeded(Element*);
bool isNull() const { return m_value.isNull(); }
bool isEmpty() const { return m_value.isEmpty(); }
virtual PassRefPtr<Attribute> clone() const;
// An extension to get the style information for presentational attributes.
virtual CSSStyleDeclaration* style() const { return 0; }
void setValue(const AtomicString& value) { m_value = value; }
void setPrefix(const AtomicString& prefix) { m_name.setPrefix(prefix); }
virtual bool isMappedAttribute() { return false; }
protected:
Attribute(const QualifiedName& name, const AtomicString& value)
: m_name(name), m_value(value), m_impl(0)
{
}
Attribute(const AtomicString& name, const AtomicString& value)
: m_name(nullAtom, name, nullAtom), m_value(value), m_impl(0)
{
}
private:
QualifiedName m_name;
AtomicString m_value;
Attr* m_impl;
};
} //namespace
#endif
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