1 /*-
2 * Copyright (c) 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 1992, 1993, 1994, 1995, 1996
5 * Keith Bostic. All rights reserved.
6 *
7 * See the LICENSE file for redistribution information.
8 */
9
10 #include "config.h"
11
12 #ifndef lint
13 static const char sccsid[] = "$Id: v_screen.c,v 10.12 2001/06/25 15:19:34 skimo Exp $";
14 #endif /* not lint */
15
16 #include <sys/types.h>
17 #include <sys/queue.h>
18 #include <sys/time.h>
19
20 #include <bitstring.h>
21 #include <limits.h>
22 #include <stdio.h>
23
24 #include "../common/common.h"
25 #include "vi.h"
26
27 /*
28 * v_screen -- ^W
29 * Switch screens.
30 *
31 * PUBLIC: int v_screen(SCR *, VICMD *);
32 */
33 int
v_screen(SCR * sp,VICMD * vp)34 v_screen(SCR *sp, VICMD *vp)
35 {
36 /*
37 * You can't leave a colon command-line edit window -- it's not that
38 * it won't work, but it gets real weird, real fast when you execute
39 * a colon command out of a window that was forked from a window that's
40 * now backgrounded... You get the idea.
41 */
42 if (F_ISSET(sp, SC_COMEDIT)) {
43 msgq(sp, M_ERR,
44 "308|Enter <CR> to execute a command, :q to exit");
45 return (1);
46 }
47
48 /*
49 * Try for the next lower screen, or, go back to the first
50 * screen on the stack.
51 */
52 if (TAILQ_NEXT(sp, q) != NULL)
53 sp->nextdisp = TAILQ_NEXT(sp, q);
54 else if (TAILQ_FIRST(sp->gp->dq) == sp) {
55 msgq(sp, M_ERR, "187|No other screen to switch to");
56 return (1);
57 } else
58 sp->nextdisp = TAILQ_FIRST(sp->gp->dq);
59
60 F_SET(sp->nextdisp, SC_STATUS);
61 F_SET(sp, SC_SSWITCH | SC_STATUS);
62 return (0);
63 }
64