WebCore/Attr.h

   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, 2007, 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 Attr_h
  26 #define Attr_h
  27
  28 #include "ContainerNode.h"
  29 #include "Attribute.h"
  30
  31 namespace WebCore {
  32
  33 // Attr can have Text and EntityReference 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.
  38
  39 class Attr : public ContainerNode {
  40     friend class NamedAttrMap;
  41 public:
  42     Attr(Element*, Document*, PassRefPtr<Attribute>);
  43     ~Attr();
  44
  45     // Call this after calling the constructor so the
  46     // Attr node isn't floating when we append the text node.
  47     void createTextChild();
  48
  49     // DOM methods & attributes for Attr
  50     String name() const { return qualifiedName().toString(); }
  51     bool specified() const { return m_specified; }
  52     Element* ownerElement() const { return m_element; }
  53
  54     String value() const { return m_attribute->value(); }
  55     void setValue(const String&, ExceptionCode&);
  56
  57     // DOM methods overridden from parent classes
  58     virtual String nodeName() const;
  59     virtual NodeType nodeType() const;
  60     const AtomicString& localName() const;
  61     const AtomicString& namespaceURI() const;
  62     const AtomicString& prefix() const;
  63     virtual void setPrefix(const AtomicString&, ExceptionCode&);
  64
  65     virtual String nodeValue() const;
  66     virtual void setNodeValue(const String&, ExceptionCode&);
  67     virtual PassRefPtr<Node> cloneNode(bool deep);
  68
  69     // Other methods (not part of DOM)
  70     virtual bool isAttributeNode() const { return true; }
  71     virtual bool childTypeAllowed(NodeType);
  72
  73     virtual void childrenChanged(bool changedByParser = false, Node* beforeChange = 0, Node* afterChange = 0, int childCountDelta = 0);
  74
  75     Attribute* attr() const { return m_attribute.get(); }
  76     const QualifiedName& qualifiedName() const { return m_attribute->name(); }
  77
  78     // An extension to get presentational information for attributes.
  79     CSSStyleDeclaration* style() { return m_attribute->style(); }
  80
  81     void setSpecified(bool specified) { m_specified = specified; }
  82
  83 private:
  84     virtual const AtomicString& virtualPrefix() const { return prefix(); }
  85     virtual const AtomicString& virtualLocalName() const { return localName(); }
  86     virtual const AtomicString& virtualNamespaceURI() const { return namespaceURI(); }
  87
  88     Element* m_element;
  89     RefPtr<Attribute> m_attribute;
  90     unsigned m_ignoreChildrenChanged : 31;
  91     bool m_specified : 1;
  92 };
  93
  94 } // namespace WebCore
  95
  96 #endif // Attr_h