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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2003-2018 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.
*
*/
#pragma once
#include "ContainerNode.h"
namespace WebCore {
class CharacterData : public Node {
WTF_MAKE_ISO_ALLOCATED(CharacterData);
public:
const String& data() const { return m_data; }
static ptrdiff_t dataMemoryOffset() { return OBJECT_OFFSETOF(CharacterData, m_data); }
WEBCORE_EXPORT void setData(const String&);
unsigned length() const { return m_data.length(); }
WEBCORE_EXPORT ExceptionOr<String> substringData(unsigned offset, unsigned count);
WEBCORE_EXPORT void appendData(const String&);
WEBCORE_EXPORT ExceptionOr<void> insertData(unsigned offset, const String&);
WEBCORE_EXPORT ExceptionOr<void> deleteData(unsigned offset, unsigned count);
WEBCORE_EXPORT ExceptionOr<void> replaceData(unsigned offset, unsigned count, const String&);
// Like appendData, but optimized for the parser (e.g., no mutation events).
void parserAppendData(StringView);
protected:
CharacterData(Document& document, String&& text, ConstructionType type = CreateCharacterData)
: Node(document, type)
, m_data(!text.isNull() ? WTFMove(text) : emptyString())
{
ASSERT(type == CreateCharacterData || type == CreateText || type == CreateEditingText);
}
~CharacterData();
void setDataWithoutUpdate(const String& data)
{
ASSERT(!data.isNull());
m_data = data;
}
void dispatchModifiedEvent(const String& oldValue);
enum class UpdateLiveRanges : bool { No, Yes };
virtual void setDataAndUpdate(const String&, unsigned offsetOfReplacedData, unsigned oldLength, unsigned newLength, UpdateLiveRanges = UpdateLiveRanges::Yes);
private:
String nodeValue() const final;
void setNodeValue(const String&) final;
void notifyParentAfterChange(const ContainerNode::ChildChange&);
void parentOrShadowHostNode() const = delete; // Call parentNode() instead.
String m_data;
};
inline unsigned Node::length() const
{
if (auto characterData = dynamicDowncast<CharacterData>(*this))
return characterData->length();
return countChildNodes();
}
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::CharacterData)
static bool isType(const WebCore::Node& node) { return node.isCharacterDataNode(); }
SPECIALIZE_TYPE_TRAITS_END()
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