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28
29/****************************************************************************
30 *   Author:  Juergen Pfeifer, 1995,1997                                    *
31 ****************************************************************************/
32
33#include "form.priv.h"
34
35MODULE_ID("$Id: fld_max.c,v 1.13 2013/08/24 22:59:28 tom Exp $")
36
37/*---------------------------------------------------------------------------
38|   Facility      :  libnform
39|   Function      :  int set_max_field(FIELD *field, int maxgrow)
40|
41|   Description   :  Set the maximum growth for a dynamic field. If maxgrow=0
42|                    the field may grow to any possible size.
43|
44|   Return Values :  E_OK           - success
45|                    E_BAD_ARGUMENT - invalid argument
46+--------------------------------------------------------------------------*/
47NCURSES_EXPORT(int)
48set_max_field(FIELD *field, int maxgrow)
49{
50  T((T_CALLED("set_max_field(%p,%d)"), (void *)field, maxgrow));
51
52  if (!field || (maxgrow < 0))
53    RETURN(E_BAD_ARGUMENT);
54  else
55    {
56      bool single_line_field = Single_Line_Field(field);
57
58      if (maxgrow > 0)
59	{
60	  if ((single_line_field && (maxgrow < field->dcols)) ||
61	      (!single_line_field && (maxgrow < field->drows)))
62	    RETURN(E_BAD_ARGUMENT);
63	}
64      field->maxgrow = maxgrow;
65      ClrStatus(field, _MAY_GROW);
66      if (!((unsigned)field->opts & O_STATIC))
67	{
68	  if ((maxgrow == 0) ||
69	      (single_line_field && (field->dcols < maxgrow)) ||
70	      (!single_line_field && (field->drows < maxgrow)))
71	    SetStatus(field, _MAY_GROW);
72	}
73    }
74  RETURN(E_OK);
75}
76
77/* fld_max.c ends here */
78