1 /* 2 * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org) 3 * (C) 1999 Antti Koivisto (koivisto (at) 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 "core/dom/Node.h" 27 #include "wtf/text/WTFString.h" 28 29 namespace WebCore { 30 31 class ExceptionState; 32 33 class CharacterData : public Node { 34 public: 35 void atomize(); 36 String data() const { return m_data; } 37 void setData(const String&); 38 unsigned length() const { return m_data.length(); } 39 String substringData(unsigned offset, unsigned count, ExceptionState&); 40 void appendData(const String&); 41 void insertData(unsigned offset, const String&, ExceptionState&); 42 void deleteData(unsigned offset, unsigned count, ExceptionState&); 43 void replaceData(unsigned offset, unsigned count, const String&, ExceptionState&); 44 45 bool containsOnlyWhitespace() const; 46 47 StringImpl* dataImpl() { return m_data.impl(); } 48 49 // Like appendData, but optimized for the parser (e.g., no mutation events). 50 // Returns how much could be added before length limit was met. 51 unsigned parserAppendData(const String& string, unsigned offset, unsigned lengthLimit); 52 53 protected: 54 CharacterData(TreeScope* treeScope, const String& text, ConstructionType type) 55 : Node(treeScope, type) 56 , m_data(!text.isNull() ? text : emptyString()) 57 { 58 ASSERT(type == CreateOther || type == CreateText || type == CreateEditingText); 59 ScriptWrappable::init(this); 60 } 61 62 void setDataWithoutUpdate(const String& data) 63 { 64 ASSERT(!data.isNull()); 65 m_data = data; 66 } 67 void didModifyData(const String& oldValue); 68 69 private: 70 virtual String nodeValue() const OVERRIDE FINAL; 71 virtual void setNodeValue(const String&) OVERRIDE FINAL; 72 virtual bool isCharacterDataNode() const OVERRIDE FINAL { return true; } 73 virtual int maxCharacterOffset() const OVERRIDE FINAL; 74 virtual bool offsetInCharacters() const OVERRIDE FINAL; 75 void setDataAndUpdate(const String&, unsigned offsetOfReplacedData, unsigned oldLength, unsigned newLength); 76 77 String m_data; 78 }; 79 80 } // namespace WebCore 81 82 #endif // CharacterData_h 83
