2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * (C) 1999 Antti Koivisto (koivisto@kde.org)
4 * (C) 2001 Peter Kelly (pmk@post.com)
5 * (C) 2001 Dirk Mueller (mueller@kde.org)
6 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
18 * You should have received a copy of the GNU Library General Public License
19 * along with this library; see the file COPYING.LIB. If not, write to
20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 * Boston, MA 02110-1301, USA.
28 #include "core/dom/ContainerNode.h"
29 #include "core/dom/QualifiedName.h"
33 // Attr can have Text children
34 // therefore it has to be a fullblown Node. The plan
35 // is to dynamically allocate a textchild and store the
36 // resulting nodevalue in the attribute upon
37 // destruction. however, this is not yet implemented.
39 class Attr FINAL : public ContainerNode {
41 static PassRefPtrWillBeRawPtr<Attr> create(Element&, const QualifiedName&);
42 static PassRefPtrWillBeRawPtr<Attr> create(Document&, const QualifiedName&, const AtomicString& value);
45 String name() const { return m_name.toString(); }
46 bool specified() const { return true; }
47 Element* ownerElement() const { return m_element; }
49 const AtomicString& value() const;
50 void setValue(const AtomicString&);
52 const AtomicString& valueForBindings() const;
53 void setValueForBindings(const AtomicString&);
55 const QualifiedName qualifiedName() const;
57 void attachToElement(Element*, const AtomicString&);
58 void detachFromElementWithValue(const AtomicString&);
60 virtual const AtomicString& localName() const OVERRIDE { return m_name.localName(); }
61 virtual const AtomicString& namespaceURI() const OVERRIDE { return m_name.namespaceURI(); }
62 const AtomicString& prefix() const { return m_name.prefix(); }
64 virtual void trace(Visitor*) OVERRIDE;
67 Attr(Element&, const QualifiedName&);
68 Attr(Document&, const QualifiedName&, const AtomicString& value);
70 bool isElementNode() const WTF_DELETED_FUNCTION; // This will catch anyone doing an unnecessary check.
72 void createTextChild();
74 void setValueInternal(const AtomicString&);
76 virtual String nodeName() const OVERRIDE { return name(); }
77 virtual NodeType nodeType() const OVERRIDE { return ATTRIBUTE_NODE; }
79 virtual String nodeValue() const OVERRIDE { return value(); }
80 virtual void setNodeValue(const String&) OVERRIDE;
81 virtual PassRefPtrWillBeRawPtr<Node> cloneNode(bool deep = true) OVERRIDE;
83 virtual bool isAttributeNode() const OVERRIDE { return true; }
84 virtual bool childTypeAllowed(NodeType) const OVERRIDE;
86 virtual void childrenChanged(const ChildrenChange&) OVERRIDE;
88 Attribute& elementAttribute();
90 // Attr wraps either an element/name, or a name/value pair (when it's a standalone Node.)
91 // Note that m_name is always set, but m_element/m_standaloneValue may be null.
92 RawPtrWillBeMember<Element> m_element;
94 // Holds the value if it is a standalone Node, or the local name of the
95 // attribute it is attached to on an Element. The latter may (letter case)
96 // differ from m_name's local name. As these two modes are non-overlapping,
97 // use a single field.
98 AtomicString m_standaloneValueOrAttachedLocalName;
99 unsigned m_ignoreChildrenChanged;
102 DEFINE_NODE_TYPE_CASTS(Attr, isAttributeNode());