1 /**************************************************************************** 2 * Copyright 2019-2020,2021 Thomas E. Dickey * 3 * Copyright 1998-2012,2013 Free Software Foundation, Inc. * 4 * * 5 * Permission is hereby granted, free of charge, to any person obtaining a * 6 * copy of this software and associated documentation files (the * 7 * "Software"), to deal in the Software without restriction, including * 8 * without limitation the rights to use, copy, modify, merge, publish, * 9 * distribute, distribute with modifications, sublicense, and/or sell * 10 * copies of the Software, and to permit persons to whom the Software is * 11 * furnished to do so, subject to the following conditions: * 12 * * 13 * The above copyright notice and this permission notice shall be included * 14 * in all copies or substantial portions of the Software. * 15 * * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 23 * * 24 * Except as contained in this notice, the name(s) of the above copyright * 25 * holders shall not be used in advertising or otherwise to promote the * 26 * sale, use or other dealings in this Software without prior written * 27 * authorization. * 28 ****************************************************************************/ 29 30 /**************************************************************************** 31 * Author: Juergen Pfeifer, 1995,1997 * 32 ****************************************************************************/ 33 34 #include "form.priv.h" 35 36 MODULE_ID("$Id: fld_max.c,v 1.18 2021/06/17 21:26:02 tom Exp $") 37 38 /*--------------------------------------------------------------------------- 39 | Facility : libnform 40 | Function : int set_max_field(FIELD *field, int maxgrow) 41 | 42 | Description : Set the maximum growth for a dynamic field. If maxgrow=0 43 | the field may grow to any possible size. 44 | 45 | Return Values : E_OK - success 46 | E_BAD_ARGUMENT - invalid argument 47 +--------------------------------------------------------------------------*/ 48 FORM_EXPORT(int) 49 set_max_field(FIELD *field, int maxgrow) 50 { 51 T((T_CALLED("set_max_field(%p,%d)"), (void *)field, maxgrow)); 52 53 if (!field || (maxgrow < 0)) 54 RETURN(E_BAD_ARGUMENT); 55 else 56 { 57 bool single_line_field = Single_Line_Field(field); 58 59 if (maxgrow > 0) 60 { 61 if (((single_line_field && (maxgrow < field->dcols)) || 62 (!single_line_field && (maxgrow < field->drows))) && 63 !Field_Has_Option(field, O_INPUT_LIMIT)) 64 RETURN(E_BAD_ARGUMENT); 65 } 66 field->maxgrow = maxgrow; 67 /* shrink */ 68 if (maxgrow > 0 && Field_Has_Option(field, O_INPUT_LIMIT) && 69 field->dcols > maxgrow) 70 field->dcols = maxgrow; 71 ClrStatus(field, _MAY_GROW); 72 if (!((unsigned)field->opts & O_STATIC)) 73 { 74 if ((maxgrow == 0) || 75 (single_line_field && (field->dcols < maxgrow)) || 76 (!single_line_field && (field->drows < maxgrow))) 77 SetStatus(field, _MAY_GROW); 78 } 79 } 80 RETURN(E_OK); 81 } 82 83 /* fld_max.c ends here */ 84