TextInterfaceFunction.h

//-*-C++-*-
 
/***************************************************************************
 *
 *   Copyright (C) 2003 - 2023 by Willem van Straten
 *   Licensed under the Academic Free License version 2.1
 *
 ***************************************************************************/
 
// psrchive/Util/units/TextInterfaceFunction.h
 
#ifndef __TextInterfaceFunction_h
#define __TextInterfaceFunction_h
 
#include "TextInterfaceAttribute.h"
 
namespace TextInterface
{


  template<class C, class Get>
  class GetFunction : public Attribute<C> {
 
  public:

    GetFunction (const std::string& _name, Get _get)
      : get (_get) { name = _name; }
    
    GetFunction (const GetFunction& copy)
      : get (copy.get) { name = copy.name; description = copy.description; }

    Attribute<C>* clone () const { return new GetFunction(*this); }

    std::string get_name () const { return name; }

    std::string get_description () const { return description; }

    void set_description (const std::string& d) { description = d; }

    std::string get_detailed_description () const
    { return detailed_description; }

    void set_detailed_description (const std::string& d)
    { detailed_description = d; }

    std::string get_value (const C* ptr) const
      { if (!ptr) return ""; return tostring( get(ptr) ); }

    void set_value (C*, const std::string&)
      { throw Error (InvalidState, "GetFunction::set_value", 
                     name + " cannot be set"); }
 
    void set_modifiers (const std::string& modifiers) const
    {
      tostring_precision = fromstring<unsigned> (modifiers);
    }
 
    void reset_modifiers () const
    {
      tostring_precision = 0;
    }
    
  protected:

    std::string name;

    std::string description;

    std::string detailed_description;

    Get get;
 
  };

  template<class C, class Get, class Set>
  class GetSetFunction : public GetFunction<C, Get>
  {
 
  public:

    GetSetFunction (const std::string& _name, Get _get, Set _set)
      : GetFunction<C,Get> (_name, _get), set (_set) { }

    Attribute<C>* clone () const { return new GetSetFunction(*this); }

    void set_value (C* ptr, const std::string& value)
      { set (ptr, fromstring<typename Set::second_argument_type> (value)); }
 
  protected:

    Set set;
  };
 
}
 
#endif