85 lines
3.2 KiB
C++
85 lines
3.2 KiB
C++
/*
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* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
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* (C) 1999 Antti Koivisto (koivisto@kde.org)
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* Copyright (C) 2003-2018 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#pragma once
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#include "ContainerNode.h"
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namespace WebCore {
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class CharacterData : public Node {
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WTF_MAKE_ISO_ALLOCATED(CharacterData);
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public:
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const String& data() const { return m_data; }
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static ptrdiff_t dataMemoryOffset() { return OBJECT_OFFSETOF(CharacterData, m_data); }
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WEBCORE_EXPORT void setData(const String&);
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unsigned length() const { return m_data.length(); }
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WEBCORE_EXPORT ExceptionOr<String> substringData(unsigned offset, unsigned count);
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WEBCORE_EXPORT void appendData(const String&);
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WEBCORE_EXPORT ExceptionOr<void> insertData(unsigned offset, const String&);
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WEBCORE_EXPORT ExceptionOr<void> deleteData(unsigned offset, unsigned count);
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WEBCORE_EXPORT ExceptionOr<void> replaceData(unsigned offset, unsigned count, const String&);
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// Like appendData, but optimized for the parser (e.g., no mutation events).
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// Returns how much could be added before length limit was met.
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unsigned parserAppendData(const String& string, unsigned offset, unsigned lengthLimit);
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protected:
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CharacterData(Document& document, const String& text, ConstructionType type = CreateCharacterData)
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: Node(document, type)
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, m_data(!text.isNull() ? text : emptyString())
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{
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ASSERT(type == CreateCharacterData || type == CreateText || type == CreateEditingText);
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}
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void setDataWithoutUpdate(const String& data)
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{
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ASSERT(!data.isNull());
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m_data = data;
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}
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void dispatchModifiedEvent(const String& oldValue);
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enum class UpdateLiveRanges : bool { No, Yes };
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virtual void setDataAndUpdate(const String&, unsigned offsetOfReplacedData, unsigned oldLength, unsigned newLength, UpdateLiveRanges = UpdateLiveRanges::Yes);
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private:
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String nodeValue() const final;
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ExceptionOr<void> setNodeValue(const String&) final;
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void notifyParentAfterChange(ContainerNode::ChildChange::Source);
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String m_data;
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};
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inline unsigned Node::length() const
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{
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if (is<CharacterData>(*this))
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return downcast<CharacterData>(*this).length();
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return countChildNodes();
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}
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} // namespace WebCore
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SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::CharacterData)
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static bool isType(const WebCore::Node& node) { return node.isCharacterDataNode(); }
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SPECIALIZE_TYPE_TRAITS_END()
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