1 /* $NetBSD: new.c,v 1.3 2015/11/02 02:45:25 kamil Exp $ */
2
3 /*
4 * Copyright (c) 2015 Valery Ushakov
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include <sys/cdefs.h>
29 __RCSID("$NetBSD: new.c,v 1.3 2015/11/02 02:45:25 kamil Exp $");
30
31 #include "panel_impl.h"
32
33 #include <assert.h>
34 #include <stdlib.h>
35
36
37 static PANEL *
_new_panel(WINDOW * w)38 _new_panel(WINDOW *w)
39 {
40 PANEL *p;
41
42 p = (PANEL *)malloc(sizeof(PANEL));
43 if (__predict_false(p == NULL))
44 return NULL;
45
46 p->win = w;
47 p->user = NULL;
48
49 DECK_INSERT_TOP(p);
50 return p;
51 }
52
53
54 PANEL *
new_panel(WINDOW * w)55 new_panel(WINDOW *w)
56 {
57
58 if (__predict_false(w == NULL))
59 return NULL;
60
61 if (__predict_false(w == stdscr))
62 return NULL;
63
64 /*
65 * Ensure there's phantom panel for stdscr at (below) the
66 * bottom. We explicitly re-assign stdscr in case it changed.
67 */
68 if (TAILQ_EMPTY(&_deck)) {
69 assert(PANEL_HIDDEN(&_stdscr_panel));
70
71 _stdscr_panel.win = stdscr;
72 DECK_INSERT_TOP(&_stdscr_panel);
73 }
74
75 return _new_panel(w);
76 }
77