1/* $NetBSD: v_screen.c,v 1.5 2014/01/26 21:43:45 christos Exp $ */ 2/*- 3 * Copyright (c) 1993, 1994 4 * The Regents of the University of California. All rights reserved. 5 * Copyright (c) 1992, 1993, 1994, 1995, 1996 6 * Keith Bostic. All rights reserved. 7 * 8 * See the LICENSE file for redistribution information. 9 */ 10 11#include "config.h" 12 13#include <sys/cdefs.h> 14#if 0 15#ifndef lint 16static const char sccsid[] = "Id: v_screen.c,v 10.12 2001/06/25 15:19:34 skimo Exp (Berkeley) Date: 2001/06/25 15:19:34 "; 17#endif /* not lint */ 18#else 19__RCSID("$NetBSD: v_screen.c,v 1.5 2014/01/26 21:43:45 christos Exp $"); 20#endif 21 22#include <sys/types.h> 23#include <sys/queue.h> 24#include <sys/time.h> 25 26#include <bitstring.h> 27#include <limits.h> 28#include <stdio.h> 29 30#include "../common/common.h" 31#include "vi.h" 32 33/* 34 * v_screen -- ^W 35 * Switch screens. 36 * 37 * PUBLIC: int v_screen __P((SCR *, VICMD *)); 38 */ 39int 40v_screen(SCR *sp, VICMD *vp) 41{ 42 /* 43 * You can't leave a colon command-line edit window -- it's not that 44 * it won't work, but it gets real weird, real fast when you execute 45 * a colon command out of a window that was forked from a window that's 46 * now backgrounded... You get the idea. 47 */ 48 if (F_ISSET(sp, SC_COMEDIT)) { 49 msgq(sp, M_ERR, 50 "308|Enter <CR> to execute a command, :q to exit"); 51 return (1); 52 } 53 54 /* 55 * Try for the next lower screen, or, go back to the first 56 * screen on the stack. 57 */ 58 if (TAILQ_NEXT(sp, q) != NULL) 59 sp->nextdisp = TAILQ_NEXT(sp, q); 60 else if (TAILQ_FIRST(&sp->wp->scrq) == sp) { 61 msgq(sp, M_ERR, "187|No other screen to switch to"); 62 return (1); 63 } else 64 sp->nextdisp = TAILQ_FIRST(&sp->wp->scrq); 65 66 F_SET(sp->nextdisp, SC_STATUS); 67 F_SET(sp, SC_SSWITCH | SC_STATUS); 68 return (0); 69} 70