diff -r 000000000000 -r 4f2f89ce4247 WebCore/dom/CharacterData.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/dom/CharacterData.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,231 @@
+/*
+ * 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())->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);
+}
+
+PassRefPtr<StringImpl> CharacterData::appendDataCommon(const String& data)
+{
+    String newStr = m_data;
+    newStr.append(data);
+
+    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);
+
+    return oldStr.release();
+}
+
+void CharacterData::parserAppendData(const String& data)
+{
+    appendDataCommon(data);
+    // We don't call dispatchModifiedEvent here because we don't want the
+    // parser to dispatch DOM mutation events.
+    if (parentNode())
+        parentNode()->childrenChanged();
+}
+
+void CharacterData::appendData(const String& data, ExceptionCode&)
+{
+    RefPtr<StringImpl> oldStr = appendDataCommon(data);
+    dispatchModifiedEvent(oldStr.get());
+}
+
+void CharacterData::insertData(unsigned offset, const String& data, ExceptionCode& ec)
+{
+    checkCharDataOperation(offset, ec);
+    if (ec)
+        return;
+
+    String newStr = m_data;
+    newStr.insert(data, 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, data.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& data, 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(data, 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, data.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