usr/src/lib/libeti/menu/common/topitem.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*      Copyright (c) 1988 AT&T */
  23 /*        All Rights Reserved   */
  24
  25
  26 /*
  27  * Copyright (c) 1997, by Sun Mircrosystems, Inc.
  28  * All rights reserved.
  29  */
  30
  31 #pragma ident   "%Z%%M% %I%     %E% SMI"        /* SVr4.0 1.9   */
  32
  33 /*LINTLIBRARY*/
  34
  35 #include <sys/types.h>
  36 #include "private.h"
  37
  38 int
  39 set_top_row(MENU *m, int top)
  40 {
  41         ITEM *current;
  42
  43         if (m) {
  44                 if (Indriver(m)) {
  45                         return (E_BAD_STATE);
  46                 }
  47                 if (!Items(m)) {
  48                         return (E_NOT_CONNECTED);
  49                 }
  50                 if (top < 0 || top > Rows(m) - Height(m)) {
  51                         return (E_BAD_ARGUMENT);
  52                 }
  53                 if (top != Top(m)) {
  54                         /* Get linking information if not already there */
  55                         if (LinkNeeded(m)) {
  56                                 _link_items(m);
  57                         }
  58                         /* Set current to toprow */
  59                         current = IthItem(m, RowMajor(m) ? top * Cols(m) : top);
  60                         Pindex(m) = 0;          /* Clear the pattern buffer */
  61                         IthPattern(m, Pindex(m)) = '\0';
  62                         _affect_change(m, top, current);
  63                 }
  64         } else {
  65                 return (E_BAD_ARGUMENT);
  66         }
  67         return (E_OK);
  68 }
  69
  70 int
  71 top_row(MENU *m)
  72 {
  73         if (m && Items(m) && IthItem(m, 0)) {
  74                 return (Top(m));
  75         } else {
  76                 return (-1);
  77         }
  78 }