xref: /illumos-gate/usr/src/lib/libeti/panel/common/top.c (revision 4de2612967d06c4fdbf524a62556a1e8118a006f)
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 Microsystems, Inc.
28  *      All rights reserved.
29  */
30 
31 /* A panels subsystem built on curses--Move a panel to the top */
32 
33 #pragma ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.3	*/
34 
35 /*LINTLIBRARY*/
36 
37 #include <sys/types.h>
38 #include <curses.h>
39 #include "private.h"
40 
41 /*  top_panel    */
42 int
43 top_panel(PANEL *panel)
44 {
45 	_obscured_list	*obs;
46 	_obscured_list	*prev_obs, *tmp;
47 
48 	if (!panel || panel == panel -> below)
49 		return (ERR);
50 
51 	/* If the panel is already on top, there is nothing to do */
52 
53 	if (_Top_panel == panel)
54 		return (OK);
55 
56 	/*
57 	 * All the panels that used to obscure this panel are
58 	 * now obscured by this panel.
59 	 */
60 
61 	if ((obs = panel -> obscured) != 0) {
62 		do {
63 			prev_obs = obs;
64 			obs = obs -> next;
65 			if ((tmp = prev_obs -> panel_p -> obscured) != 0) {
66 				prev_obs->next = tmp->next;
67 				tmp->next = prev_obs;
68 			} else
69 				prev_obs->next =
70 				    prev_obs->panel_p->obscured = prev_obs;
71 			prev_obs -> panel_p = panel;
72 		}
73 		while (obs != panel -> obscured);
74 		panel -> obscured = 0;
75 	}
76 
77 	/* Move the panel to the top */
78 
79 	if (panel == _Bottom_panel)
80 		(_Bottom_panel = panel -> above) -> below = 0;
81 	else {
82 		panel -> above -> below = panel -> below;
83 		panel -> below -> above = panel -> above;
84 	}
85 
86 	panel -> above = 0;
87 	panel -> below = _Top_panel;
88 	_Top_panel = _Top_panel -> above = panel;
89 	(void) touchwin(panel -> win);
90 
91 	return (OK);
92 }
93