1 /**************************************************************************** 2 * Copyright (c) 1998-2003,2004 Free Software Foundation, Inc. * 3 * * 4 * Permission is hereby granted, free of charge, to any person obtaining a * 5 * copy of this software and associated documentation files (the * 6 * "Software"), to deal in the Software without restriction, including * 7 * without limitation the rights to use, copy, modify, merge, publish, * 8 * distribute, distribute with modifications, sublicense, and/or sell * 9 * copies of the Software, and to permit persons to whom the Software is * 10 * furnished to do so, subject to the following conditions: * 11 * * 12 * The above copyright notice and this permission notice shall be included * 13 * in all copies or substantial portions of the Software. * 14 * * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 22 * * 23 * Except as contained in this notice, the name(s) of the above copyright * 24 * holders shall not be used in advertising or otherwise to promote the * 25 * sale, use or other dealings in this Software without prior written * 26 * authorization. * 27 ****************************************************************************/ 28 29 /**************************************************************************** 30 * Author: Juergen Pfeifer, 1995,1997 * 31 ****************************************************************************/ 32 33 #include "form.priv.h" 34 35 MODULE_ID("$Id: fld_max.c,v 1.9 2004/12/11 21:51:54 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 +--------------------------------------------------------------------------*/ 47 NCURSES_EXPORT(int) 48 set_max_field(FIELD *field, int maxgrow) 49 { 50 T((T_CALLED("set_max_field(%p,%d)"), 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 field->status &= ~_MAY_GROW; 66 if (!(field->opts & O_STATIC)) 67 { 68 if ((maxgrow == 0) || 69 (single_line_field && (field->dcols < maxgrow)) || 70 (!single_line_field && (field->drows < maxgrow))) 71 field->status |= _MAY_GROW; 72 } 73 } 74 RETURN(E_OK); 75 } 76 77 /* fld_max.c ends here */ 78