pgpropertyfield_integer.h

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/*
    ParaGUI - crossplatform widgetset
    Copyright (C) 2000,2001,2002  Alexander Pipelka
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.
 
    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.
 
    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
    Alexander Pipelka
    pipelka@teleweb.at
 
    Last Update:      $Author: mbickel $
    Update Date:      $Date: 2007-04-13 16:15:57 $
    Source File:      $Source: /home/cvspsrv/cvsroot/games/asc/source/libs/paragui/include/pgpropertyfield_integer.h,v $
    CVS/RCS Revision: $Revision: 1.2 $
    Status:           $State: Exp $
*/

#ifndef PG_PROPERTYFIELD_INTEGER_H
#define PG_PROPERTYFIELD_INTEGER_H

#include <sstream>
#include <limits>

#include "pgpropertyeditor_linefield.h"


template <class IntegerType=int>
class PG_PropertyField_Integer : public PG_PropertyEditor_LineField {
        IntegerType* myProperty;
        IntegerType minValue;
        IntegerType maxValue;
protected:
        bool convert( IntegerType& i ) {
                std::istringstream s( lineEdit->GetText() );
                if ( !( s >> i ))
                        return false;

                return s.eof();
        };

        void set
                ( IntegerType i ) {
                std::ostringstream s;
                s << i;
                lineEdit->SetText( s.str() );
        }

        bool EditEnd() {
                IntegerType i ;
                if ( convert(i)) {
                        sigValueChanged(this,i);
                        return true;
                } else
                        return false;
        }

public:

        typedef PG_Signal2<PG_PropertyField_Integer*, IntegerType> IntegerPropertySignal;
        IntegerPropertySignal sigValueChanged;
        IntegerPropertySignal sigValueApplied;

        PG_PropertyField_Integer( PG_PropertyEditor* propertyEditor, const std::string& name, IntegerType* myInteger ) : PG_PropertyEditor_LineField( propertyEditor, name ), myProperty( myInteger ) {
                minValue = std::numeric_limits<IntegerType>::min();
                maxValue = std::numeric_limits<IntegerType>::max();
                Reload();
        };

        PG_PropertyField_Integer( PG_PropertyEditor* propertyEditor, const std::string& name, IntegerType myInteger ) : PG_PropertyEditor_LineField( propertyEditor, name ), myProperty( NULL ) {
                minValue = std::numeric_limits<IntegerType>::min();
                maxValue = std::numeric_limits<IntegerType>::max();
                set
                        ( myInteger );
        };

        void SetRange( IntegerType min, IntegerType max ) {
                if ( min <= max ) {
                        minValue = min;
                        maxValue = max;
                }
        }

        virtual bool CheckValue( IntegerType value ) {
                return value >= minValue && value <= maxValue;
        }

        bool Valid() {
                IntegerType i;
                if ( !convert(i) )
                        return false;

                if ( !CheckValue( i ))
                        return false;

                return true;
        };

        bool Apply() {
                IntegerType i;
                if ( !convert(i) )
                        return false;

                if ( !CheckValue( i ))
                        return false;

                sigValueApplied( this, i );

                if ( myProperty )
                        *myProperty = i;

                return true;
        };

        void Reload() {
                if ( myProperty )
                        set
                                ( *myProperty );
        };

};

#endif

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