1 /*

     2  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)

     3  *           (C) 1999 Antti Koivisto (koivisto@kde.org)

     4  * Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Apple Inc. All rights reserved.

     5  *

     6  * This library is free software; you can redistribute it and/or

     7  * modify it under the terms of the GNU Library General Public

     8  * License as published by the Free Software Foundation; either

     9  * version 2 of the License, or (at your option) any later version.

    10  *

    11  * This library is distributed in the hope that it will be useful,

    12  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    14  * Library General Public License for more details.

    15  *

    16  * You should have received a copy of the GNU Library General Public License

    17  * along with this library; see the file COPYING.LIB.  If not, write to

    18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

    19  * Boston, MA 02110-1301, USA.

    20  *

    21  */

    22 

    23 #ifndef CharacterData_h

    24 #define CharacterData_h

    25 

    26 #include "Node.h"

    27 

    28 namespace WebCore {

    29 

    30 class CharacterData : public Node {

    31 public:

    32     String data() const { return m_data; }

    33     void setData(const String&, ExceptionCode&);

    34     unsigned length() const { return m_data->length(); }

    35     String substringData(unsigned offset, unsigned count, ExceptionCode&);

    36     void appendData(const String&, ExceptionCode&);

    37     void insertData(unsigned offset, const String&, ExceptionCode&);

    38     void deleteData(unsigned offset, unsigned count, ExceptionCode&);

    39     void replaceData(unsigned offset, unsigned count, const String&, ExceptionCode&);

    40 

    41     bool containsOnlyWhitespace() const;

    42 

    43     StringImpl* dataImpl() { return m_data.get(); }

    44 

    45     // Like appendData, but optimized for the parser (e.g., no mutation events).

    46     void parserAppendData(const String&);

    47 

    48 protected:

    49     CharacterData(Document* document, const String& text, ConstructionType type)

    50         : Node(document, type)

    51         , m_data(text.impl() ? text.impl() : StringImpl::empty())

    52     {

    53         ASSERT(type == CreateComment || type == CreateText);

    54     }

    55 

    56     virtual bool rendererIsNeeded(RenderStyle*);

    57 

    58     void setDataImpl(PassRefPtr<StringImpl> impl) { m_data = impl; }

    59     void dispatchModifiedEvent(StringImpl* oldValue);

    60 

    61 private:

    62     virtual String nodeValue() const;

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

    64     virtual bool isCharacterDataNode() const { return true; }

    65     virtual int maxCharacterOffset() const;

    66     virtual bool offsetInCharacters() const;

    67 

    68     void checkCharDataOperation(unsigned offset, ExceptionCode&);

    69     PassRefPtr<StringImpl> appendDataCommon(const String&);

    70 

    71     RefPtr<StringImpl> m_data;

    72 };

    73 

    74 } // namespace WebCore

    75 

    76 #endif // CharacterData_h

    77