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/*
* (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 2000 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2004, 2005, 2006, 2007 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 RenderTextFragment_h
#define RenderTextFragment_h
#include "RenderText.h"
namespace WebCore {
// Used to represent a text substring of an element, e.g., for text runs that are split because of
// first letter and that must therefore have different styles (and positions in the render tree).
// We cache offsets so that text transformations can be applied in such a way that we can recover
// the original unaltered string from our corresponding DOM node.
class RenderTextFragment : public RenderText {
public:
RenderTextFragment(Node*, StringImpl*, int startOffset, int length);
RenderTextFragment(Node*, StringImpl*);
virtual bool isTextFragment() const { return true; }
virtual void destroy();
unsigned start() const { return m_start; }
unsigned end() const { return m_end; }
RenderObject* firstLetter() const { return m_firstLetter; }
void setFirstLetter(RenderObject* firstLetter) { m_firstLetter = firstLetter; }
StringImpl* contentString() const { return m_contentString.get(); }
virtual PassRefPtr<StringImpl> originalText() const;
private:
virtual void setTextInternal(PassRefPtr<StringImpl>);
virtual UChar previousCharacter() const;
unsigned m_start;
unsigned m_end;
RefPtr<StringImpl> m_contentString;
RenderObject* m_firstLetter;
};
} // namespace WebCore
#endif // RenderTextFragment_h
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