/* | |
* 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 "CString.h" | |
#include "EventNames.h" | |
#include "ExceptionCode.h" | |
#include "MutationEvent.h" | |
#include "RenderText.h" | |
namespace WebCore { | |
CharacterData::CharacterData(Document* document, const String& text, ConstructionType type) | |
: Node(document, type) | |
, m_data(text.impl() ? text.impl() : StringImpl::empty()) | |
{ | |
ASSERT(type == CreateOther || type == CreateText); | |
} | |
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())->setTextWithOffset(m_data, 0, oldLength); | |
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 |