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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, 2007, 2008, 2009 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 Attr_h
#define Attr_h
#include "core/dom/ContainerNode.h"
#include "core/dom/QualifiedName.h"
namespace blink {
// Attr can have Text children
// therefore it has to be a fullblown Node. The plan
// is to dynamically allocate a textchild and store the
// resulting nodevalue in the attribute upon
// destruction. however, this is not yet implemented.
class Attr final : public ContainerNode {
DEFINE_WRAPPERTYPEINFO();
public:
static PassRefPtrWillBeRawPtr<Attr> create(Element&, const QualifiedName&);
static PassRefPtrWillBeRawPtr<Attr> create(Document&, const QualifiedName&, const AtomicString& value);
virtual ~Attr();
String name() const { return m_name.toString(); }
bool specified() const { return true; }
Element* ownerElement() const { return m_element; }
const AtomicString& value() const;
void setValue(const AtomicString&);
const AtomicString& valueForBindings() const;
void setValueForBindings(const AtomicString&);
const QualifiedName qualifiedName() const;
void attachToElement(Element*, const AtomicString&);
void detachFromElementWithValue(const AtomicString&);
virtual const AtomicString& localName() const override { return m_name.localName(); }
virtual const AtomicString& namespaceURI() const override { return m_name.namespaceURI(); }
const AtomicString& prefix() const { return m_name.prefix(); }
virtual void trace(Visitor*) override;
private:
Attr(Element&, const QualifiedName&);
Attr(Document&, const QualifiedName&, const AtomicString& value);
bool isElementNode() const = delete; // This will catch anyone doing an unnecessary check.
void createTextChild();
void setValueInternal(const AtomicString&);
virtual String nodeName() const override { return name(); }
virtual NodeType nodeType() const override { return ATTRIBUTE_NODE; }
virtual String nodeValue() const override { return value(); }
virtual void setNodeValue(const String&) override;
virtual PassRefPtrWillBeRawPtr<Node> cloneNode(bool deep = true) override;
virtual bool isAttributeNode() const override { return true; }
virtual bool childTypeAllowed(NodeType) const override;
virtual void childrenChanged(const ChildrenChange&) override;
Attribute& elementAttribute();
// Attr wraps either an element/name, or a name/value pair (when it's a standalone Node.)
// Note that m_name is always set, but m_element/m_standaloneValue may be null.
RawPtrWillBeMember<Element> m_element;
QualifiedName m_name;
// Holds the value if it is a standalone Node, or the local name of the
// attribute it is attached to on an Element. The latter may (letter case)
// differ from m_name's local name. As these two modes are non-overlapping,
// use a single field.
AtomicString m_standaloneValueOrAttachedLocalName;
unsigned m_ignoreChildrenChanged;
};
DEFINE_NODE_TYPE_CASTS(Attr, isAttributeNode());
} // namespace blink
#endif // Attr_h
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