1 /* 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, 2008 Apple Inc. All rights reserved. 7 * 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. 12 * 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. 17 * 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. 22 * 23 */ 24 25 #ifndef Attribute_h 26 #define Attribute_h 27 28 #include "CSSMappedAttributeDeclaration.h" 29 #include "QualifiedName.h" 30 31 namespace WebCore { 32 33 class Attr; 34 class CSSStyleDeclaration; 35 class Element; 36 class NamedNodeMap; 37 38 // This has no counterpart in DOM. 39 // It is an internal representation of the node value of an Attr. 40 // The actual Attr with its value as a Text child is allocated only if needed. 41 class Attribute : public RefCounted<Attribute> { 42 friend class Attr; 43 friend class NamedNodeMap; 44 public: create(const QualifiedName & name,const AtomicString & value)45 static PassRefPtr<Attribute> create(const QualifiedName& name, const AtomicString& value) 46 { 47 return adoptRef(new Attribute(name, value, false, 0)); 48 } createMapped(const QualifiedName & name,const AtomicString & value)49 static PassRefPtr<Attribute> createMapped(const QualifiedName& name, const AtomicString& value) 50 { 51 return adoptRef(new Attribute(name, value, true, 0)); 52 } createMapped(const AtomicString & name,const AtomicString & value)53 static PassRefPtr<Attribute> createMapped(const AtomicString& name, const AtomicString& value) 54 { 55 return adoptRef(new Attribute(name, value, true, 0)); 56 } 57 value()58 const AtomicString& value() const { return m_value; } prefix()59 const AtomicString& prefix() const { return m_name.prefix(); } localName()60 const AtomicString& localName() const { return m_name.localName(); } namespaceURI()61 const AtomicString& namespaceURI() const { return m_name.namespaceURI(); } 62 name()63 const QualifiedName& name() const { return m_name; } 64 65 Attr* attr() const; 66 PassRefPtr<Attr> createAttrIfNeeded(Element*); 67 isNull()68 bool isNull() const { return m_value.isNull(); } isEmpty()69 bool isEmpty() const { return m_value.isEmpty(); } 70 71 PassRefPtr<Attribute> clone() const; 72 73 // An extension to get the style information for presentational attributes. style()74 CSSStyleDeclaration* style() const { return m_styleDecl.get(); } decl()75 CSSMappedAttributeDeclaration* decl() const { return m_styleDecl.get(); } setDecl(PassRefPtr<CSSMappedAttributeDeclaration> decl)76 void setDecl(PassRefPtr<CSSMappedAttributeDeclaration> decl) { m_styleDecl = decl; } 77 setValue(const AtomicString & value)78 void setValue(const AtomicString& value) { m_value = value; } setPrefix(const AtomicString & prefix)79 void setPrefix(const AtomicString& prefix) { m_name.setPrefix(prefix); } 80 81 // Note: This API is only for HTMLTreeBuilder. It is not safe to change the 82 // name of an attribute once parseMappedAttribute has been called as DOM 83 // elements may have placed the Attribute in a hash by name. parserSetName(const QualifiedName & name)84 void parserSetName(const QualifiedName& name) { m_name = name; } 85 isMappedAttribute()86 bool isMappedAttribute() { return m_isMappedAttribute; } 87 88 private: Attribute(const QualifiedName & name,const AtomicString & value,bool isMappedAttribute,CSSMappedAttributeDeclaration * styleDecl)89 Attribute(const QualifiedName& name, const AtomicString& value, bool isMappedAttribute, CSSMappedAttributeDeclaration* styleDecl) 90 : m_isMappedAttribute(isMappedAttribute) 91 , m_hasAttr(false) 92 , m_name(name) 93 , m_value(value) 94 , m_styleDecl(styleDecl) 95 { 96 } 97 Attribute(const AtomicString & name,const AtomicString & value,bool isMappedAttribute,CSSMappedAttributeDeclaration * styleDecl)98 Attribute(const AtomicString& name, const AtomicString& value, bool isMappedAttribute, CSSMappedAttributeDeclaration* styleDecl) 99 : m_isMappedAttribute(isMappedAttribute) 100 , m_hasAttr(false) 101 , m_name(nullAtom, name, nullAtom) 102 , m_value(value) 103 , m_styleDecl(styleDecl) 104 { 105 } 106 107 void bindAttr(Attr*); 108 void unbindAttr(Attr*); 109 110 // 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 QualifiedName m_name; 115 AtomicString m_value; 116 RefPtr<CSSMappedAttributeDeclaration> m_styleDecl; 117 }; 118 119 } // namespace WebCore 120 121 #endif // Attribute_h 122