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    */
42int
43top_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