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