Attribute.h 4.37 KB
Newer Older
1 2 3 4 5
/*
 * 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)
darin@apple.com's avatar
darin@apple.com committed
6
 * Copyright (C) 2003, 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
7 8 9 10 11 12 13 14 15 16 17 18 19
 *
 * 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
ddkilzer's avatar
ddkilzer committed
20 21
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
22 23 24 25 26 27
 *
 */

#ifndef Attribute_h
#define Attribute_h

28
#include "CSSMappedAttributeDeclaration.h"
29 30 31 32
#include "QualifiedName.h"

namespace WebCore {

darin's avatar
darin committed
33
class Attr;
34
class CSSStyleDeclaration;
darin's avatar
darin committed
35
class Element;
36
class NamedNodeMap;
37

darin@apple.com's avatar
darin@apple.com committed
38 39 40
// 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.
ggaren@apple.com's avatar
ggaren@apple.com committed
41
class Attribute : public RefCounted<Attribute> {
42
    friend class Attr;
43
    friend class NamedNodeMap;
44
public:
darin@apple.com's avatar
darin@apple.com committed
45 46
    static PassRefPtr<Attribute> create(const QualifiedName& name, const AtomicString& value)
    {
47
        return adoptRef(new Attribute(name, value, false, 0));
darin@apple.com's avatar
darin@apple.com committed
48
    }
49 50 51 52 53 54 55 56
    static PassRefPtr<Attribute> createMapped(const QualifiedName& name, const AtomicString& value)
    {
        return adoptRef(new Attribute(name, value, true, 0));
    }
    static PassRefPtr<Attribute> createMapped(const AtomicString& name, const AtomicString& value)
    {
        return adoptRef(new Attribute(name, value, true, 0));
    }
57

58 59 60 61 62 63 64
    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; }
    
65
    Attr* attr() const;
darin's avatar
darin committed
66
    PassRefPtr<Attr> createAttrIfNeeded(Element*);
67 68 69 70

    bool isNull() const { return m_value.isNull(); }
    bool isEmpty() const { return m_value.isEmpty(); }
    
71
    PassRefPtr<Attribute> clone() const;
72 73

    // An extension to get the style information for presentational attributes.
74 75 76 77
    CSSStyleDeclaration* style() const { return m_styleDecl.get(); }
    CSSMappedAttributeDeclaration* decl() const { return m_styleDecl.get(); }
    void setDecl(PassRefPtr<CSSMappedAttributeDeclaration> decl) { m_styleDecl = decl; }

78 79 80
    void setValue(const AtomicString& value) { m_value = value; }
    void setPrefix(const AtomicString& prefix) { m_name.setPrefix(prefix); }

81 82 83 84
    // Note: This API is only for HTMLTreeBuilder.  It is not safe to change the
    // name of an attribute once parseMappedAttribute has been called as DOM
    // elements may have placed the Attribute in a hash by name.
    void parserSetName(const QualifiedName& name) { m_name = name; }
85

86
    bool isMappedAttribute() { return m_isMappedAttribute; }
ddkilzer@apple.com's avatar
ddkilzer@apple.com committed
87

88
private:
89 90
    Attribute(const QualifiedName& name, const AtomicString& value, bool isMappedAttribute, CSSMappedAttributeDeclaration* styleDecl)
        : m_isMappedAttribute(isMappedAttribute)
91
        , m_hasAttr(false)
92 93 94
        , m_name(name)
        , m_value(value)
        , m_styleDecl(styleDecl)
darin@apple.com's avatar
darin@apple.com committed
95 96
    {
    }
97 98 99

    Attribute(const AtomicString& name, const AtomicString& value, bool isMappedAttribute, CSSMappedAttributeDeclaration* styleDecl)
        : m_isMappedAttribute(isMappedAttribute)
100
        , m_hasAttr(false)
101 102 103
        , m_name(nullAtom, name, nullAtom)
        , m_value(value)
        , m_styleDecl(styleDecl)
darin@apple.com's avatar
darin@apple.com committed
104 105 106
    {
    }

107 108 109 110
    void bindAttr(Attr*);
    void unbindAttr(Attr*);

    // These booleans will go into the spare 32-bits of padding from RefCounted in 64-bit.
111
    bool m_isMappedAttribute;
112
    bool m_hasAttr;
113
    
114 115
    QualifiedName m_name;
    AtomicString m_value;
116
    RefPtr<CSSMappedAttributeDeclaration> m_styleDecl;
117 118
};

119
} // namespace WebCore
120

121
#endif // Attribute_h