root/Source/core/dom/CharacterData.cpp

DEFINITIONS

1. atomize
2. setData
3. substringData
4. parserAppendData
5. appendData
6. insertData
7. deleteData
8. replaceData
9. nodeValue
10. containsOnlyWhitespace
11. setNodeValue
12. setDataAndUpdate
13. didModifyData
14. maxCharacterOffset
15. offsetInCharacters

/*
 * 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"

using namespace std;

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;

    RefPtr<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());
}

void CharacterData::deleteData(unsigned offset, unsigned count, 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;
    }

    unsigned realCount;
    if (offset + count > length())
        realCount = length() - offset;
    else
        realCount = count;

    String newStr = m_data;
    newStr.remove(offset, realCount);

    setDataAndUpdate(newStr, offset, count, 0, recalcStyleBehavior);

    document().didRemoveText(this, offset, realCount);
}

void CharacterData::replaceData(unsigned offset, unsigned count, const String& data, ExceptionState& exceptionState)
{
    if (offset > length()) {
        exceptionState.throwDOMException(IndexSizeError, "The offset " + String::number(offset) + " is greater than the node's length (" + String::number(length()) + ").");
        return;
    }

    unsigned realCount;
    if (offset + count > length())
        realCount = length() - offset;
    else
        realCount = count;

    String newStr = m_data;
    newStr.remove(offset, realCount);
    newStr.insert(data, offset);

    setDataAndUpdate(newStr, offset, count, 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)->checkStyleSheet();

    if (document().frame())
        document().frame()->selection().didUpdateCharacterData(this, offsetOfReplacedData, oldLength, newLength);

    document().incDOMTreeVersion();
    didModifyData(oldData);
}

void CharacterData::didModifyData(const String& oldData)
{
    if (OwnPtr<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