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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.
*
*/
#include "config.h"
#include "RenderTextFragment.h"
#include "Text.h"
namespace WebCore {
RenderTextFragment::RenderTextFragment(Node* node, StringImpl* str, int startOffset, int length)
: RenderText(node, str ? str->substring(startOffset, length) : 0)
, m_start(startOffset)
, m_end(length)
, m_firstLetter(0)
{
}
RenderTextFragment::RenderTextFragment(Node* node, StringImpl* str)
: RenderText(node, str)
, m_start(0)
, m_end(str ? str->length() : 0)
, m_contentString(str)
, m_firstLetter(0)
{
}
PassRefPtr<StringImpl> RenderTextFragment::originalText() const
{
Node* e = element();
RefPtr<StringImpl> result = (e ? static_cast<Text*>(e)->string() : contentString());
if (result && (start() > 0 || start() < result->length()))
result = result->substring(start(), end());
return result.release();
}
void RenderTextFragment::destroy()
{
if (m_firstLetter)
m_firstLetter->destroy();
RenderText::destroy();
}
void RenderTextFragment::setTextInternal(PassRefPtr<StringImpl> text)
{
RenderText::setTextInternal(text);
if (m_firstLetter) {
ASSERT(!m_contentString);
m_firstLetter->destroy();
m_firstLetter = 0;
m_start = 0;
m_end = textLength();
}
}
UChar RenderTextFragment::previousCharacter()
{
if (start()) {
Node* e = element();
StringImpl* original = (e ? static_cast<Text*>(e)->string() : contentString());
if (original)
return (*original)[start() - 1];
}
return RenderText::previousCharacter();
}
} // namespace WebCore
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