usr/src/lib/libeti/menu/common/affect.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 1.4   */
  32
  33 /*LINTLIBRARY*/
  34
  35 #include <sys/types.h>
  36 #include "private.h"
  37
  38 /*
  39  * This routine checks the supplied values against the values of
  40  * current and top items.  If a value has changed then one of
  41  * terminate routines is called.  Following the actual change of
  42  * the value is the calling of the initialize routines.
  43  */
  44
  45 void
  46 _affect_change(MENU *m, int newtop, ITEM *newcurrent)
  47 {
  48         ITEM *oldcur;
  49         int topchange = FALSE, curchange = FALSE;
  50
  51         /* Call term and init routines if posted */
  52         if (Posted(m)) {
  53
  54                 /* If current has changed terminate the old item. */
  55                 if (newcurrent != Current(m)) {
  56                         Iterm(m);
  57                         curchange = TRUE;
  58                 }
  59
  60                 /* If top has changed then call menu init function */
  61                 if (newtop != Top(m)) {
  62                         Mterm(m);
  63                         topchange = TRUE;
  64                 }
  65
  66                 oldcur = Current(m);
  67                 Top(m) = newtop;
  68                 Current(m) = newcurrent;
  69
  70                 if (topchange) {
  71                         /* Init the new page if top has changed */
  72                         Minit(m);
  73                 }
  74
  75                 if (curchange) {
  76                         /* Unmark the old item and mark  the new one */
  77                         _movecurrent(m, oldcur);
  78                         /* Init the new item if current changed */
  79                         Iinit(m);
  80                 }
  81
  82                 /* If anything changed go change user's copy of menu */
  83                 if (topchange || curchange) {
  84                         _show(m);
  85                 } else {
  86                         _position_cursor(m);
  87                 }
  88
  89         } else {
  90                 /* Just change Top and Current if not posted */
  91                 Top(m) = newtop;
  92                 Current(m) = newcurrent;
  93         }
  94 }