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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 "core/dom/CharacterData.h"
#include "bindings/v8/ExceptionState.h"
#include "core/dom/Document.h"
#include "core/dom/ExceptionCode.h"
#include "core/dom/MutationObserverInterestGroup.h"
#include "core/dom/MutationRecord.h"
#include "core/dom/ProcessingInstruction.h"
#include "core/dom/Text.h"
#include "core/editing/FrameSelection.h"
#include "core/events/MutationEvent.h"
#include "core/inspector/InspectorInstrumentation.h"
#include "wtf/CheckedArithmetic.h"
namespace WebCore {
void CharacterData::atomize()
{
m_data = AtomicString(m_data);
}
void CharacterData::setData(const String& data)
{
const String& nonNullData = !data.isNull() ? data : emptyString();
if (m_data == nonNullData)
return;
RefPtrWillBeRawPtr<CharacterData> protect(this);
unsigned oldLength = length();
setDataAndUpdate(nonNullData, 0, oldLength, nonNullData.length());
document().didRemoveText(this, 0, oldLength);
}
String CharacterData::substringData(unsigned offset, unsigned count, ExceptionState& exceptionState)
{
if (offset > length()) {
exceptionState.throwDOMException(IndexSizeError, "The offset " + String::number(offset) + " is greater than the node's length (" + String::number(length()) + ").");
return String();
}
return m_data.substring(offset, count);
}
void CharacterData::parserAppendData(const String& string)
{
unsigned oldLength = m_data.length();
m_data = m_data + string;
ASSERT(!renderer() || isTextNode());
if (isTextNode())
toText(this)->updateTextRenderer(oldLength, 0);
document().incDOMTreeVersion();
if (parentNode())
parentNode()->childrenChanged();
}
void CharacterData::appendData(const String& data)
{
String newStr = m_data + data;
setDataAndUpdate(newStr, m_data.length(), 0, data.length());
// FIXME: Should we call textInserted here?
}
void CharacterData::insertData(unsigned offset, const String& data, ExceptionState& exceptionState, RecalcStyleBehavior recalcStyleBehavior)
{
if (offset > length()) {
exceptionState.throwDOMException(IndexSizeError, "The offset " + String::number(offset) + " is greater than the node's length (" + String::number(length()) + ").");
return;
}
String newStr = m_data;
newStr.insert(data, offset);
setDataAndUpdate(newStr, offset, 0, data.length(), recalcStyleBehavior);
document().didInsertText(this, offset, data.length());
}
static bool validateOffsetCount(unsigned offset, unsigned count, unsigned length, unsigned& realCount, ExceptionState& exceptionState)
{
if (offset > length) {
exceptionState.throwDOMException(IndexSizeError, "The offset " + String::number(offset) + " is greater than the node's length (" + String::number(length) + ").");
return false;
}
Checked<unsigned, RecordOverflow> offsetCount = offset;
offsetCount += count;
if (offsetCount.hasOverflowed() || offset + count > length)
realCount = length - offset;
else
realCount = count;
return true;
}
void CharacterData::deleteData(unsigned offset, unsigned count, ExceptionState& exceptionState, RecalcStyleBehavior recalcStyleBehavior)
{
unsigned realCount = 0;
if (!validateOffsetCount(offset, count, length(), realCount, exceptionState))
return;
String newStr = m_data;
newStr.remove(offset, realCount);
setDataAndUpdate(newStr, offset, realCount, 0, recalcStyleBehavior);
document().didRemoveText(this, offset, realCount);
}
void CharacterData::replaceData(unsigned offset, unsigned count, const String& data, ExceptionState& exceptionState)
{
unsigned realCount = 0;
if (!validateOffsetCount(offset, count, length(), realCount, exceptionState))
return;
String newStr = m_data;
newStr.remove(offset, realCount);
newStr.insert(data, offset);
setDataAndUpdate(newStr, offset, realCount, data.length());
// update the markers for spell checking and grammar checking
document().didRemoveText(this, offset, realCount);
document().didInsertText(this, offset, data.length());
}
String CharacterData::nodeValue() const
{
return m_data;
}
bool CharacterData::containsOnlyWhitespace() const
{
return m_data.containsOnlyWhitespace();
}
void CharacterData::setNodeValue(const String& nodeValue)
{
setData(nodeValue);
}
void CharacterData::setDataAndUpdate(const String& newData, unsigned offsetOfReplacedData, unsigned oldLength, unsigned newLength, RecalcStyleBehavior recalcStyleBehavior)
{
String oldData = m_data;
m_data = newData;
ASSERT(!renderer() || isTextNode());
if (isTextNode())
toText(this)->updateTextRenderer(offsetOfReplacedData, oldLength, recalcStyleBehavior);
if (nodeType() == PROCESSING_INSTRUCTION_NODE)
toProcessingInstruction(this)->didAttributeChanged();
if (document().frame())
document().frame()->selection().didUpdateCharacterData(this, offsetOfReplacedData, oldLength, newLength);
document().incDOMTreeVersion();
didModifyData(oldData);
}
void CharacterData::didModifyData(const String& oldData)
{
if (OwnPtrWillBeRawPtr<MutationObserverInterestGroup> mutationRecipients = MutationObserverInterestGroup::createForCharacterDataMutation(*this))
mutationRecipients->enqueueMutationRecord(MutationRecord::createCharacterData(this, oldData));
if (parentNode())
parentNode()->childrenChanged();
if (!isInShadowTree()) {
if (document().hasListenerType(Document::DOMCHARACTERDATAMODIFIED_LISTENER))
dispatchScopedEvent(MutationEvent::create(EventTypeNames::DOMCharacterDataModified, true, nullptr, oldData, m_data));
dispatchSubtreeModifiedEvent();
}
InspectorInstrumentation::characterDataModified(this);
}
int CharacterData::maxCharacterOffset() const
{
return static_cast<int>(length());
}
bool CharacterData::offsetInCharacters() const
{
return true;
}
} // namespace WebCore
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