runtimeparametersetters.h

/********************************************************************************
 *  FARSA - Total99                                                             *
 *  Copyright (C) 2008-2012 Tomassino Ferrauto <t_ferrauto@yahoo.it>            *
 *                                                                              *
 *  This program is free software; you can redistribute it and/or modify        *
 *  it under the terms of the GNU General Public License as published by        *
 *  the Free Software Foundation; either version 2 of the License, or           *
 *  (at your option) any later version.                                         *
 *                                                                              *
 *  This program 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 General Public License for more details.                                *
 *                                                                              *
 *  You should have received a copy of the GNU General Public License           *
 *  along with this program; if not, write to the Free Software                 *
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA  *
 ********************************************************************************/

#ifndef RUNTIME_PARAMETER_SETTERS_H
#define RUNTIME_PARAMETER_SETTERS_H

#include "configurationconfig.h"
#include <QString>
#include <QStringList>

namespace farsa {

class ParameterSettable;

class FARSA_CONF_API RuntimeParameterObserver {
public:
    virtual ~RuntimeParameterObserver() { /*nothing to do*/ };
    virtual void onParameterChanges( ParameterSettable* object, QString paramName ) = 0;
    virtual void onObjectDestruction( ParameterSettable* object ) = 0;
};

class FARSA_CONF_API RuntimeParameterSetter {
public:
    RuntimeParameterSetter( QString descrPath ) {
        this->descrPath = descrPath;
        this->name = descrPath.split( '/', QString::SkipEmptyParts ).last();
    };
    virtual ~RuntimeParameterSetter() { /* nothing to do */ };
    virtual QString set( ParameterSettable* object, QString newvalue );
    virtual int set( ParameterSettable* object, int newvalue );
    virtual unsigned int set( ParameterSettable* object, unsigned int newvalue );
    virtual double set( ParameterSettable* object, double newvalue );
    virtual float set( ParameterSettable* object, float newvalue );
    virtual bool set( ParameterSettable* object, bool newvalue );
    virtual void get( ParameterSettable* object, QString& ret );
    virtual void get( ParameterSettable* object, int& ret );
    virtual void get( ParameterSettable* object, unsigned int& ret );
    virtual void get( ParameterSettable* object, double& ret );
    virtual void get( ParameterSettable* object, float& ret );
    virtual void get( ParameterSettable* object, bool& ret );
    QString getName() { return name; };
    QString getDescriptionPath() { return descrPath; };
protected:
    QString name;
    QString descrPath;
};

// template<typename H>
// class FARSA_CONF_TEMPLATE PointerSetter : public RuntimeParameterSetter {
// public:
//  /*! the constructor */
//  PointerSetter( H* pointer, QString name )
//      : RuntimeParameterSetter( name, H() ),
//        pparam(pointer) { /* nothing else to do */ };
//  /*! set the parameter changing directly the value of the int parameter */
//  H set( H newvalue ) {
//      (*pparam) = newvalue;
//      return *pparam;
//  };
// private:
//  /*! the pointer to the parameter */
//  H* pparam;
// };

template<class T, typename H>
class FARSA_CONF_TEMPLATE MethodSetter : public RuntimeParameterSetter {
public:
    MethodSetter( QString paramPath, void (T::*setter)(H), H (T::*getter)()const )
        : RuntimeParameterSetter( paramPath ),
          setter(setter),
          getter(getter) { /*nothing else to do*/ };
    H set( ParameterSettable* object, H newvalue ) {
        T* robject = static_cast<T*>( object );
        (robject->*setter)( newvalue );
        return (robject->*getter)();
    };
    void get( ParameterSettable* object, H& retvar ) {
        T* robject = static_cast<T*>( object );
        retvar = (robject->*getter)();
    };
private:
    void (T::*setter)(H);
    H (T::*getter)()const;
};

} // end namespace farsa

#endif