xref: /titanic_50/usr/src/lib/libeti/menu/common/affect.c (revision 7eea693d6b672899726e75993fddc4e95b52647f)
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 }
95