lib
creationstrategy.h
00001 /* This file is part of the KDE project 00002 Copyright (C) 2003 Ulrich Kuettler <ulrich.kuettler@gmx.de> 00003 00004 This library is free software; you can redistribute it and/or 00005 modify it under the terms of the GNU Library General Public 00006 License as published by the Free Software Foundation; either 00007 version 2 of the License, or (at your option) any later version. 00008 00009 This library is distributed in the hope that it will be useful, 00010 but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00012 Library General Public License for more details. 00013 00014 You should have received a copy of the GNU Library General Public License 00015 along with this library; see the file COPYING.LIB. If not, write to 00016 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 00017 * Boston, MA 02110-1301, USA. 00018 */ 00019 00020 00021 #ifndef CREATIONSTRATEGY_H 00022 #define CREATIONSTRATEGY_H 00023 00024 00025 #include <qstring.h> 00026 #include <qdom.h> 00027 00028 #include "kformuladefs.h" 00029 00030 KFORMULA_NAMESPACE_BEGIN 00031 00032 class BasicElement; 00033 class BracketElement; 00034 class EmptyElement; 00035 class FractionElement; 00036 class IdentifierElement; 00037 class IndexElement; 00038 class MatrixElement; 00039 class MultilineElement; 00040 class NameSequence; 00041 class OperatorElement; 00042 class OverlineElement; 00043 class RootElement; 00044 class SpaceElement; 00045 class SymbolElement; 00046 class TextElement; 00047 class NumberElement; 00048 class UnderlineElement; 00049 00054 class ElementCreationStrategy { 00055 public: 00056 virtual ~ElementCreationStrategy() {} 00057 00058 virtual BasicElement* createElement( QString type, const QDomElement& element ) = 0; 00059 00061 virtual TextElement* createTextElement( const QChar& ch, bool symbol=false ) = 0; 00062 00064 virtual MatrixElement* createMatrixElement( uint rows, uint columns ) = 0; 00065 00066 virtual EmptyElement* createEmptyElement() = 0; 00067 virtual NameSequence* createNameSequence() = 0; 00068 virtual BracketElement* createBracketElement( SymbolType lhs, SymbolType rhs ) = 0; 00069 virtual OverlineElement* createOverlineElement() = 0; 00070 virtual UnderlineElement* createUnderlineElement() = 0; 00071 virtual MultilineElement* createMultilineElement() = 0; 00072 virtual SpaceElement* createSpaceElement( SpaceWidth width ) = 0; 00073 virtual FractionElement* createFractionElement() = 0; 00074 virtual RootElement* createRootElement() = 0; 00075 virtual SymbolElement* createSymbolElement( SymbolType type ) = 0; 00076 virtual IndexElement* createIndexElement() = 0; 00077 virtual IdentifierElement* createIdentifierElement() = 0; 00078 virtual OperatorElement* createOperatorElement() = 0; 00079 virtual NumberElement* createNumberElement() = 0; 00080 virtual QString type() const = 0; 00081 }; 00082 00083 00087 class OrdinaryCreationStrategy : public ElementCreationStrategy { 00088 public: 00089 virtual BasicElement* createElement( QString type, const QDomElement& element = 0 ); 00090 00091 virtual TextElement* createTextElement( const QChar& ch, bool symbol=false ); 00092 virtual EmptyElement* createEmptyElement(); 00093 virtual NameSequence* createNameSequence(); 00094 virtual BracketElement* createBracketElement( SymbolType lhs, SymbolType rhs ); 00095 virtual OverlineElement* createOverlineElement(); 00096 virtual UnderlineElement* createUnderlineElement(); 00097 virtual MultilineElement* createMultilineElement(); 00098 virtual SpaceElement* createSpaceElement( SpaceWidth width ); 00099 virtual FractionElement* createFractionElement(); 00100 virtual RootElement* createRootElement(); 00101 virtual SymbolElement* createSymbolElement( SymbolType type ); 00102 virtual MatrixElement* createMatrixElement( uint rows, uint columns ); 00103 virtual IndexElement* createIndexElement(); 00104 virtual IdentifierElement* createIdentifierElement(); 00105 virtual OperatorElement* createOperatorElement(); 00106 virtual NumberElement* createNumberElement(); 00107 virtual QString type() const { return "Ordinary"; } 00108 }; 00109 00110 00111 KFORMULA_NAMESPACE_END 00112 00113 #endif // CREATIONSTRATEGY_H