1/* 2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) 3 * (C) 1999 Antti Koivisto (koivisto@kde.org) 4 * Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Apple Inc. All rights reserved. 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Library General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Library General Public License for more details. 15 * 16 * You should have received a copy of the GNU Library General Public License 17 * along with this library; see the file COPYING.LIB. If not, write to 18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA. 20 * 21 */ 22 23#ifndef CharacterData_h 24#define CharacterData_h 25 26#include "Node.h" 27#include <wtf/text/WTFString.h> 28 29namespace WebCore { 30 31class CharacterData : public Node { 32public: 33 String data() const { return m_data; } 34 void setData(const String&, ExceptionCode&); 35 unsigned length() const { return m_data.length(); } 36 String substringData(unsigned offset, unsigned count, ExceptionCode&); 37 void appendData(const String&, ExceptionCode&); 38 void insertData(unsigned offset, const String&, ExceptionCode&); 39 void deleteData(unsigned offset, unsigned count, ExceptionCode&); 40 void replaceData(unsigned offset, unsigned count, const String&, ExceptionCode&); 41 42 bool containsOnlyWhitespace() const; 43 44 StringImpl* dataImpl() { return m_data.impl(); } 45 46 // Like appendData, but optimized for the parser (e.g., no mutation events). 47 // Returns how much could be added before length limit was met. 48 unsigned parserAppendData(const String& string, unsigned offset, unsigned lengthLimit); 49 50protected: 51 CharacterData(Document& document, const String& text, ConstructionType type) 52 : Node(document, type) 53 , m_data(!text.isNull() ? text : emptyString()) 54 { 55 ASSERT(type == CreateOther || type == CreateText || type == CreateEditingText); 56 } 57 58 void setDataWithoutUpdate(const String& data) 59 { 60 ASSERT(!data.isNull()); 61 m_data = data; 62 } 63 void dispatchModifiedEvent(const String& oldValue); 64 65private: 66 virtual String nodeValue() const override final; 67 virtual void setNodeValue(const String&, ExceptionCode&) override final; 68 virtual bool isCharacterDataNode() const override final { return true; } 69 virtual int maxCharacterOffset() const override final; 70 virtual bool offsetInCharacters() const override final; 71 void setDataAndUpdate(const String&, unsigned offsetOfReplacedData, unsigned oldLength, unsigned newLength); 72 void checkCharDataOperation(unsigned offset, ExceptionCode&); 73 74 String m_data; 75}; 76 77inline bool isCharacterData(const Node& node) { return node.isCharacterDataNode(); } 78void isCharacterData(const CharacterData&); // Catch unnecessary runtime check of type known at compile time. 79void isCharacterData(const ContainerNode&); // Catch unnecessary runtime check of type known at compile time. 80 81NODE_TYPE_CASTS(CharacterData) 82 83} // namespace WebCore 84 85#endif // CharacterData_h 86