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 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 // this has no counterpart in DOM, purely internal

    34 // representation of the nodevalue of an Attr.

    35 // the actual Attr (Attr) with its value as textchild

    36 // is only allocated on demand by the DOM bindings.

    37 // Any use of Attr inside khtml should be avoided.

    38 

    39 // Attr can have Text and EntityReference children

    40 // therefore it has to be a fullblown Node. The plan

    41 // is to dynamically allocate a textchild and store the

    42 // resulting nodevalue in the Attribute upon

    43 // destruction. however, this is not yet implemented.

    44 

    45 class Attr : public ContainerNode {

    46     friend class NamedAttrMap;

    47 

    48 public:

    49     Attr(Element*, Document*, Attribute*);

    50     ~Attr();

    51 

    52     // Call this after calling the constructor so the

    53     // Attr node isn't floating when we append the text node.

    54     void createTextChild();

    55     

    56     // DOM methods & attributes for Attr

    57     String name() const { return qualifiedName().toString(); }

    58     bool specified() const { return m_attrWasSpecifiedOrElementHasRareData; }

    59     Element* ownerElement() const { return m_element; }

    60 

    61     String value() const { return m_attribute->value(); }

    62     void setValue(const String&, ExceptionCode&);

    63 

    64     // DOM methods overridden from parent classes

    65     virtual String nodeName() const;

    66     virtual NodeType nodeType() const;

    67     virtual const AtomicString& localName() const;

    68     virtual const AtomicString& namespaceURI() const;

    69     virtual const AtomicString& prefix() const;

    70     virtual void setPrefix(const AtomicString&, ExceptionCode&);

    71 

    72     virtual String nodeValue() const;

    73     virtual void setNodeValue(const String&, ExceptionCode&);

    74     virtual PassRefPtr<Node> cloneNode(bool deep);

    75 

    76     // Other methods (not part of DOM)

    77     virtual bool isAttributeNode() const { return true; }

    78     virtual bool childTypeAllowed(NodeType);

    79 

    80     virtual void childrenChanged();

    81     virtual String toString() const;

    82 

    83     Attribute* attr() const { return m_attribute.get(); }

    84     const QualifiedName& qualifiedName() const { return m_attribute->name(); }

    85 

    86     // An extension to get presentational information for attributes.

    87     CSSStyleDeclaration* style() { return m_attribute->style(); }

    88 

    89     void setSpecified(bool specified) { m_attrWasSpecifiedOrElementHasRareData = specified; }

    90 

    91 private:

    92     Element* m_element;

    93     RefPtr<Attribute> m_attribute;

    94     int m_ignoreChildrenChanged;

    95 };

    96 

    97 } //namespace

    98 

    99 #endif