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 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