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 "Node.h" 27 28 namespace WebCore { 29 30 class CharacterData : public Node { 31 public: 32 String data() const { return m_data; } 33 void setData(const String&, ExceptionCode&); 34 unsigned length() const { return m_data->length(); } 35 String substringData(unsigned offset, unsigned count, ExceptionCode&); 36 void appendData(const String&, ExceptionCode&); 37 void insertData(unsigned offset, const String&, ExceptionCode&); 38 void deleteData(unsigned offset, unsigned count, ExceptionCode&); 39 void replaceData(unsigned offset, unsigned count, const String&, ExceptionCode&); 40 41 bool containsOnlyWhitespace() const; 42 43 StringImpl* dataImpl() { return m_data.get(); } 44 45 // Like appendData, but optimized for the parser (e.g., no mutation events). 46 // Returns how much could be added before length limit was met. 47 unsigned parserAppendData(const UChar*, unsigned dataLength, unsigned lengthLimit); 48 49 protected: 50 CharacterData(Document* document, const String& text, ConstructionType type) 51 : Node(document, type) 52 , m_data(text.impl() ? text.impl() : StringImpl::empty()) 53 { 54 ASSERT(type == CreateComment || type == CreateText); 55 } 56 57 virtual bool rendererIsNeeded(RenderStyle*); 58 59 void setDataImpl(PassRefPtr<StringImpl> impl) { m_data = impl; } 60 void dispatchModifiedEvent(StringImpl* oldValue); 61 62 private: 63 virtual String nodeValue() const; 64 virtual void setNodeValue(const String&, ExceptionCode&); 65 virtual bool isCharacterDataNode() const { return true; } 66 virtual int maxCharacterOffset() const; 67 virtual bool offsetInCharacters() const; 68 void setDataAndUpdate(PassRefPtr<StringImpl>, unsigned offsetOfReplacedData, unsigned oldLength, unsigned newLength); 69 void updateRenderer(unsigned offsetOfReplacedData, unsigned lengthOfReplacedData); 70 void checkCharDataOperation(unsigned offset, ExceptionCode&); 71 72 RefPtr<StringImpl> m_data; 73 }; 74 75 } // namespace WebCore 76 77 #endif // CharacterData_h 78 79
