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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Apple Inc. All rights reserved.
*
* 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
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef CharacterData_h
#define CharacterData_h
#include "Node.h"
#include <wtf/text/WTFString.h>
namespace WebCore {
class CharacterData : public Node {
public:
const String& data() const { return m_data; }
static ptrdiff_t dataMemoryOffset() { return OBJECT_OFFSETOF(CharacterData, m_data); }
WEBCORE_EXPORT void setData(const String&);
unsigned length() const { return m_data.length(); }
String substringData(unsigned offset, unsigned count, ExceptionCode&);
void appendData(const String&);
void insertData(unsigned offset, const String&, ExceptionCode&);
void deleteData(unsigned offset, unsigned count, ExceptionCode&);
void replaceData(unsigned offset, unsigned count, const String&, ExceptionCode&);
bool containsOnlyWhitespace() const;
// Like appendData, but optimized for the parser (e.g., no mutation events).
// Returns how much could be added before length limit was met.
unsigned parserAppendData(const String& string, unsigned offset, unsigned lengthLimit);
protected:
CharacterData(Document& document, const String& text, ConstructionType type)
: Node(document, type)
, m_data(!text.isNull() ? text : emptyString())
{
ASSERT(type == CreateOther || type == CreateText || type == CreateEditingText);
}
void setDataWithoutUpdate(const String& data)
{
ASSERT(!data.isNull());
m_data = data;
}
void dispatchModifiedEvent(const String& oldValue);
private:
virtual String nodeValue() const override final;
virtual void setNodeValue(const String&, ExceptionCode&) override final;
virtual bool isCharacterDataNode() const override final { return true; }
virtual int maxCharacterOffset() const override final;
virtual bool offsetInCharacters() const override final;
void setDataAndUpdate(const String&, unsigned offsetOfReplacedData, unsigned oldLength, unsigned newLength);
void checkCharDataOperation(unsigned offset, ExceptionCode&);
String m_data;
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::CharacterData)
static bool isType(const WebCore::Node& node) { return node.isCharacterDataNode(); }
SPECIALIZE_TYPE_TRAITS_END()
#endif // CharacterData_h
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