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
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