/*	$OpenBSD: fld_max.c,v 1.1 1997/12/03 05:39:55 millert Exp $	*/

/*-----------------------------------------------------------------------------+
|           The ncurses form library is  Copyright (C) 1995-1997               |
|             by Juergen Pfeifer <Juergen.Pfeifer@T-Online.de>                 |
|                          All Rights Reserved.                                |
|                                                                              |
| Permission to use, copy, modify, and distribute this software and its        |
| documentation for any purpose and without fee is hereby granted, provided    |
| that the above copyright notice appear in all copies and that both that      |
| copyright notice and this permission notice appear in supporting             |
| documentation, and that the name of the above listed copyright holder(s) not |
| be used in advertising or publicity pertaining to distribution of the        |
| software without specific, written prior permission.                         | 
|                                                                              |
| THE ABOVE LISTED COPYRIGHT HOLDER(S) DISCLAIM ALL WARRANTIES WITH REGARD TO  |
| THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT-  |
| NESS, IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR   |
| ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RE- |
| SULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, |
| NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH    |
| THE USE OR PERFORMANCE OF THIS SOFTWARE.                                     |
+-----------------------------------------------------------------------------*/

#include "form.priv.h"

MODULE_ID("Id: fld_max.c,v 1.1 1997/10/21 13:24:19 juergen Exp $")

/*---------------------------------------------------------------------------
|   Facility      :  libnform  
|   Function      :  int set_max_field(FIELD *field, int maxgrow)
|   
|   Description   :  Set the maximum growth for a dynamic field. If maxgrow=0
|                    the field may grow to any possible size.
|
|   Return Values :  E_OK           - success
|                    E_BAD_ARGUMENT - invalid argument
+--------------------------------------------------------------------------*/
int set_max_field(FIELD *field, int maxgrow)
{
  if (!field || (maxgrow<0))
    RETURN(E_BAD_ARGUMENT);
  else
    {
      bool single_line_field = Single_Line_Field(field);

      if (maxgrow>0)
	{
	  if (( single_line_field && (maxgrow < field->dcols)) ||
	      (!single_line_field && (maxgrow < field->drows)))
	    RETURN(E_BAD_ARGUMENT);
	}
      field->maxgrow = maxgrow;
      field->status &= ~_MAY_GROW;
      if (!(field->opts & O_STATIC))
	{
	  if ((maxgrow==0) ||
	      ( single_line_field && (field->dcols < maxgrow)) ||
	      (!single_line_field && (field->drows < maxgrow)))
	    field->status |= _MAY_GROW;
	}
    }
  RETURN(E_OK);
}
		  
/* fld_max.c ends here */