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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, 2007, 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.
*/
#include "config.h"
#include "CharacterData.h"
#include "EventNames.h"
#include "ExceptionCode.h"
#include "MutationEvent.h"
#include "RenderText.h"
namespace WebCore {
void CharacterData::setData(const String& data, ExceptionCode&)
{
StringImpl* dataImpl = data.impl() ? data.impl() : StringImpl::empty();
if (equal(m_data.get(), dataImpl))
return;
int oldLength = length();
RefPtr<StringImpl> oldStr = m_data;
m_data = dataImpl;
if ((!renderer() || !rendererIsNeeded(renderer()->style())) && attached()) {
detach();
attach();
} else if (renderer())
toRenderText(renderer())->setText(m_data);
dispatchModifiedEvent(oldStr.get());
document()->textRemoved(this, 0, oldLength);
}
String CharacterData::substringData(unsigned offset, unsigned count, ExceptionCode& ec)
{
checkCharDataOperation(offset, ec);
if (ec)
return String();
return m_data->substring(offset, count);
}
void CharacterData::appendData(const String& arg, ExceptionCode&)
{
String newStr = m_data;
newStr.append(arg);
RefPtr<StringImpl> oldStr = m_data;
m_data = newStr.impl();
if ((!renderer() || !rendererIsNeeded(renderer()->style())) && attached()) {
detach();
attach();
} else if (renderer())
toRenderText(renderer())->setTextWithOffset(m_data, oldStr->length(), 0);
dispatchModifiedEvent(oldStr.get());
}
void CharacterData::insertData(unsigned offset, const String& arg, ExceptionCode& ec)
{
checkCharDataOperation(offset, ec);
if (ec)
return;
String newStr = m_data;
newStr.insert(arg, offset);
RefPtr<StringImpl> oldStr = m_data;
m_data = newStr.impl();
if ((!renderer() || !rendererIsNeeded(renderer()->style())) && attached()) {
detach();
attach();
} else if (renderer())
toRenderText(renderer())->setTextWithOffset(m_data, offset, 0);
dispatchModifiedEvent(oldStr.get());
document()->textInserted(this, offset, arg.length());
}
void CharacterData::deleteData(unsigned offset, unsigned count, ExceptionCode& ec)
{
checkCharDataOperation(offset, ec);
if (ec)
return;
unsigned realCount;
if (offset + count > length())
realCount = length() - offset;
else
realCount = count;
String newStr = m_data;
newStr.remove(offset, realCount);
RefPtr<StringImpl> oldStr = m_data;
m_data = newStr.impl();
if ((!renderer() || !rendererIsNeeded(renderer()->style())) && attached()) {
detach();
attach();
} else if (renderer())
toRenderText(renderer())->setTextWithOffset(m_data, offset, count);
dispatchModifiedEvent(oldStr.get());
document()->textRemoved(this, offset, realCount);
}
void CharacterData::replaceData(unsigned offset, unsigned count, const String& arg, ExceptionCode& ec)
{
checkCharDataOperation(offset, ec);
if (ec)
return;
unsigned realCount;
if (offset + count > length())
realCount = length() - offset;
else
realCount = count;
String newStr = m_data;
newStr.remove(offset, realCount);
newStr.insert(arg, offset);
RefPtr<StringImpl> oldStr = m_data;
m_data = newStr.impl();
if ((!renderer() || !rendererIsNeeded(renderer()->style())) && attached()) {
detach();
attach();
} else if (renderer())
toRenderText(renderer())->setTextWithOffset(m_data, offset, count);
dispatchModifiedEvent(oldStr.get());
// update the markers for spell checking and grammar checking
document()->textRemoved(this, offset, realCount);
document()->textInserted(this, offset, arg.length());
}
String CharacterData::nodeValue() const
{
return m_data;
}
bool CharacterData::containsOnlyWhitespace() const
{
return !m_data || m_data->containsOnlyWhitespace();
}
void CharacterData::setNodeValue(const String& nodeValue, ExceptionCode& ec)
{
setData(nodeValue, ec);
}
void CharacterData::dispatchModifiedEvent(StringImpl* prevValue)
{
if (parentNode())
parentNode()->childrenChanged();
if (document()->hasListenerType(Document::DOMCHARACTERDATAMODIFIED_LISTENER))
dispatchEvent(MutationEvent::create(eventNames().DOMCharacterDataModifiedEvent, true, 0, prevValue, m_data));
dispatchSubtreeModifiedEvent();
}
void CharacterData::checkCharDataOperation(unsigned offset, ExceptionCode& ec)
{
ec = 0;
// INDEX_SIZE_ERR: Raised if the specified offset is negative or greater than the number of 16-bit
// units in data.
if (offset > length()) {
ec = INDEX_SIZE_ERR;
return;
}
}
int CharacterData::maxCharacterOffset() const
{
return static_cast<int>(length());
}
bool CharacterData::rendererIsNeeded(RenderStyle *style)
{
if (!m_data || !length())
return false;
return Node::rendererIsNeeded(style);
}
bool CharacterData::offsetInCharacters() const
{
return true;
}
} // namespace WebCore
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