#include <varmask.h>
#include <utility.h>
       
const TString& TVariable_mask::get(short fld_id) const
{
   if (present( fld_id ))
     return TMask::get( fld_id );
   else
     return "";
}

void TVariable_mask::set_handler(short fld_id, CONTROL_HANDLER handler)
{
  if(present( fld_id ))
    TMask::set_handler( fld_id, handler );
}               

void TVariable_mask::set(short fld_id, const char* str, bool hit )
{
  if(present( fld_id ))
    TMask::set( fld_id, str, hit );
}

void TVariable_mask::show(short fld_id, bool on )
{
  if(present( fld_id ) )
    TMask::show( fld_id, on );
}
 
void TVariable_mask::enable(short fld_id, bool on )
{
  if(present( fld_id ))
    TMask::enable( fld_id, on );
}

void TVariable_mask::check_field( short fld_id )
{
  if (present( fld_id ))
    TMask::check_field(fld_id);
}

TMask_field* TVariable_mask::parse_field(TScanner& scanner)
{
  if (scanner.key() == "SP")
  {
    _sheets++;
    return new TVariable_sheet_field(this);
  }

  return TMask::parse_field(scanner);
}

TVariable_mask::TVariable_mask(const char* name, int num, int max) : TMask()
{

  if (name && *name)
    read_mask(name, num, max);
}


TMask& TVariable_sheet_field::sheet_mask() const
{ 
  TMask& m = TSheet_field::sheet_mask();
  const int current = selected();
  
  if (_getmask != NULL && current >= 0 && current < items())
    return *_getmask(current, m, FALSE);
  return m;
}                                  
 
TVariable_sheet_field::~TVariable_sheet_field()
{ 
  TMask & m = TSheet_field::sheet_mask();
  if (_getmask != NULL)
    _getmask(0, m, TRUE);   // Distrugge la maschera customizzata
}