usr/src/lib/libeti/menu/common/curitem.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 1.6   */
  32
  33 /*LINTLIBRARY*/
  34
  35 #include <sys/types.h>
  36 #include "private.h"
  37
  38 int
  39 set_current_item(MENU *m, ITEM *current)
  40 {
  41         int top;
  42
  43         if (m && current && Imenu(current) == m) {
  44                 if (Indriver(m)) {
  45                         return (E_BAD_STATE);
  46                 }
  47                 if (current != Current(m)) {
  48                         if (LinkNeeded(m)) {
  49                                 _link_items(m);
  50                         }
  51
  52                         top = Top(m);
  53                         _chk_current(m, &top, current);
  54
  55                         /* Next clear the pattern buffer. */
  56                         Pindex(m) = 0;
  57                         IthPattern(m, Pindex(m)) = '\0';
  58                         _affect_change(m, top, current);
  59                 }
  60         } else {
  61                 return (E_BAD_ARGUMENT);
  62         }
  63         return (E_OK);
  64 }
  65
  66 ITEM *
  67 current_item(MENU *m)
  68 {
  69         if (m && Items(m)) {
  70                 return (Current(m));
  71         } else {
  72                 return ((ITEM *)0);
  73         }
  74 }
  75
  76 int
  77 item_index(ITEM *i)
  78 {
  79         if (i && Imenu(i)) {
  80                 return (Index(i));
  81         } else {
  82                 return (-1);
  83         }
  84 }