diff options
Diffstat (limited to 'WebCore/rendering/RenderTextFragment.cpp')
-rw-r--r-- | WebCore/rendering/RenderTextFragment.cpp | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/WebCore/rendering/RenderTextFragment.cpp b/WebCore/rendering/RenderTextFragment.cpp new file mode 100644 index 0000000..c8beba0 --- /dev/null +++ b/WebCore/rendering/RenderTextFragment.cpp @@ -0,0 +1,87 @@ +/* + * (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 |