freebsd-dev/contrib/ncurses/form/fld_ftchoice.c

/****************************************************************************
 * Copyright 2018,2020 Thomas E. Dickey                                     *
 * Copyright 1998-2012,2016 Free Software Foundation, Inc.                  *
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/****************************************************************************
 *   Author:  Juergen Pfeifer, 1995,1997                                    *
 ****************************************************************************/

#include "form.priv.h"

MODULE_ID("$Id: fld_ftchoice.c,v 1.17 2020/05/24 01:40:20 anonymous.maarten Exp $")

/*---------------------------------------------------------------------------
|   Facility      :  libnform  
|   Function      :  int set_fieldtype_choice(
|                          FIELDTYPE *typ,
|                          bool (* const next_choice)(FIELD *,const void *),
|                          bool (* const prev_choice)(FIELD *,const void *))
|
|   Description   :  Define implementation of enumeration requests.
|
|   Return Values :  E_OK           - success
|                    E_BAD_ARGUMENT - invalid arguments
+--------------------------------------------------------------------------*/
FORM_EXPORT(int)
set_fieldtype_choice(FIELDTYPE *typ,
		     bool (*const next_choice) (FIELD *, const void *),
		     bool (*const prev_choice) (FIELD *, const void *))
{
  TR_FUNC_BFR(2);

  T((T_CALLED("set_fieldtype_choice(%p,%s,%s)"),
     (void *)typ,
     TR_FUNC_ARG(0, next_choice),
     TR_FUNC_ARG(1, prev_choice)));

  if (!typ || !next_choice || !prev_choice)
    RETURN(E_BAD_ARGUMENT);

  SetStatus(typ, _HAS_CHOICE);
#if NCURSES_INTEROP_FUNCS
  typ->enum_next.onext = next_choice;
  typ->enum_prev.oprev = prev_choice;
#else
  typ->next = next_choice;
  typ->prev = prev_choice;
#endif
  RETURN(E_OK);
}

/* fld_ftchoice.c ends here */