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--Delete panel routines */
32
33 /*LINTLIBRARY*/
34
35 #include <sys/types.h>
36 #include <stdlib.h>
37 #include <curses.h>
38 #include "private.h"
39
40 /* hide_panel - Unlink a panel from the pile and remove it from the screen. */
41 int
hide_panel(PANEL * panel)42 hide_panel(PANEL *panel)
43 {
44 if (!panel)
45 return (ERR);
46
47 /* It is ok to hide a panel that is already hidden. */
48
49 if (panel == panel -> below)
50 return (OK);
51
52 /* unlink panel */
53
54 _remove_overlap(panel);
55 if (panel == _Bottom_panel)
56 _Bottom_panel = panel -> above;
57 else
58 panel -> below -> above = panel -> above;
59
60 if (panel == _Top_panel)
61 _Top_panel = panel -> below;
62 else
63 panel -> above -> below = panel -> below;
64
65 _Panel_cnt--;
66 panel -> below = panel;
67 return (OK);
68 }
69
70 /*
71 * del_panel - Delete a panel from the pile
72 * and free all memory associated with it.
73 */
74 int
del_panel(PANEL * panel)75 del_panel(PANEL *panel)
76 {
77 return ((hide_panel(panel) == OK) ? free(panel), OK : ERR);
78 }
79
80 /*
81 * _remove_overlap
82 * Remove all references to a panel from the obscured lists of all panels.
83 * Also remove all obscured nodes from the given panel. This routine
84 * touches the appropriate places to ensure that everybody is properly
85 * updated.
86 */
87 void
_remove_overlap(PANEL * panel)88 _remove_overlap(PANEL *panel)
89 {
90 PANEL *pnl;
91 _obscured_list *obs;
92 _obscured_list *prev_obs;
93
94 /* Make sure that the background gets updated */
95
96 (void) touchline(stdscr, panel->wstarty,
97 panel->wendy - panel->wstarty + 1);
98
99 /* Remove all references to the panel from the remaining panels */
100
101 for (pnl = _Bottom_panel; pnl != panel; pnl = pnl->above) {
102 if (obs = _unlink_obs(pnl, panel))
103 _free_overlap(obs);
104 }
105
106 /* delete the obscured list from the panel */
107
108 if ((obs = panel -> obscured) != 0) {
109 do {
110 prev_obs = obs;
111 obs = obs -> next;
112 _free_overlap(prev_obs);
113 }
114 while (obs != panel -> obscured);
115 panel -> obscured = 0;
116 }
117 }
118