FreeBSD-5.3/usr.bin/window/win.c
/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Edward Wang at The University of California, Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char sccsid[] = "@(#)win.c 8.1 (Berkeley) 6/6/93";
static char rcsid[] =
"$FreeBSD: src/usr.bin/window/win.c,v 1.3 2001/05/17 09:38:48 obrien Exp $";
#endif /* not lint */
#include "defs.h"
#include "char.h"
/*
* Higher level routines for dealing with windows.
*
* There are two types of windows: user window, and information window.
* User windows are the ones with a pty and shell. Information windows
* are for displaying error messages, and other information.
*
* The windows are doubly linked in overlapping order and divided into
* two groups: foreground and normal. Information
* windows are always foreground. User windows can be either.
* Addwin() adds a window to the list at the top of one of the two groups.
* Deletewin() deletes a window. Front() moves a window to the front
* of its group. Wwopen(), wwadd(), and wwdelete() should never be called
* directly.
*/
/*
* Open a user window.
*/
struct ww *
openwin(id, row, col, nrow, ncol, nline, label, haspty, hasframe, shf, sh)
char *label;
char haspty, hasframe;
char *shf, **sh;
{
register struct ww *w;
if (id < 0 && (id = findid()) < 0)
return 0;
if (row + nrow <= 0 || row > wwnrow - 1
|| col + ncol <= 0 || col > wwncol - 1) {
error("Illegal window position.");
return 0;
}
w = wwopen(haspty ? WWO_PTY : WWO_SOCKET, nrow, ncol, row, col, nline);
if (w == 0) {
error("Can't open window: %s.", wwerror());
return 0;
}
w->ww_id = id;
window[id] = w;
w->ww_hasframe = hasframe;
w->ww_alt = w->ww_w;
if (label != 0 && setlabel(w, label) < 0)
error("No memory for label.");
wwcursor(w, 1);
/*
* We have to do this little maneuver to make sure
* addwin() puts w at the top, so we don't waste an
* insert and delete operation.
*/
setselwin((struct ww *)0);
addwin(w, 0);
setselwin(w);
if (wwspawn(w, shf, sh) < 0) {
error("Can't execute %s: %s.", shf, wwerror());
closewin(w);
return 0;
}
return w;
}
findid()
{
register i;
for (i = 0; i < NWINDOW && window[i] != 0; i++)
;
if (i >= NWINDOW) {
error("Too many windows.");
return -1;
}
return i;
}
struct ww *
findselwin()
{
register struct ww *w, *s = 0;
register i;
for (i = 0; i < NWINDOW; i++)
if ((w = window[i]) != 0 && w != selwin &&
(s == 0 ||
!isfg(w) && (w->ww_order < s->ww_order || isfg(s))))
s = w;
return s;
}
/*
* Close a user window. Close all if w == 0.
*/
closewin(w)
register struct ww *w;
{
char didit = 0;
register i;
if (w != 0) {
closewin1(w);
didit++;
} else
for (i = 0; i < NWINDOW; i++) {
if ((w = window[i]) == 0)
continue;
closewin1(w);
didit++;
}
if (didit) {
if (selwin == 0)
if (lastselwin != 0) {
setselwin(lastselwin);
lastselwin = 0;
} else if (w = findselwin())
setselwin(w);
if (lastselwin == 0 && selwin)
if (w = findselwin())
lastselwin = w;
reframe();
}
}
/*
* Open an information (display) window.
*/
struct ww *
openiwin(nrow, label)
char *label;
{
register struct ww *w;
if ((w = wwopen(0, nrow, wwncol, 2, 0, 0)) == 0)
return 0;
w->ww_mapnl = 1;
w->ww_hasframe = 1;
w->ww_nointr = 1;
w->ww_noupdate = 1;
w->ww_unctrl = 1;
w->ww_id = -1;
w->ww_center = 1;
(void) setlabel(w, label);
addwin(w, 1);
reframe();
return w;
}
/*
* Close an information window.
*/
closeiwin(w)
struct ww *w;
{
closewin1(w);
reframe();
}
closewin1(w)
register struct ww *w;
{
if (w == selwin)
selwin = 0;
if (w == lastselwin)
lastselwin = 0;
if (w->ww_id >= 0 && w->ww_id < NWINDOW)
window[w->ww_id] = 0;
if (w->ww_label)
str_free(w->ww_label);
deletewin(w);
wwclose(w);
}
/*
* Move the window to the top of its group.
* Don't do it if already fully visible.
* Wwvisible() doesn't work for tinted windows.
* But anything to make it faster.
* Always reframe() if doreframe is true.
*/
front(w, doreframe)
register struct ww *w;
char doreframe;
{
if (w->ww_back != (isfg(w) ? framewin : fgwin) && !wwvisible(w)) {
deletewin(w);
addwin(w, isfg(w));
doreframe = 1;
}
if (doreframe)
reframe();
}
/*
* Add a window at the top of normal windows or foreground windows.
* For normal windows, we put it behind the current window.
*/
addwin(w, fg)
register struct ww *w;
char fg;
{
if (fg) {
wwadd(w, framewin);
if (fgwin == framewin)
fgwin = w;
} else
wwadd(w, selwin != 0 && selwin != w && !isfg(selwin)
? selwin : fgwin);
}
/*
* Delete a window.
*/
deletewin(w)
register struct ww *w;
{
if (fgwin == w)
fgwin = w->ww_back;
wwdelete(w);
}
reframe()
{
register struct ww *w;
wwunframe(framewin);
for (w = wwhead.ww_back; w != &wwhead; w = w->ww_back)
if (w->ww_hasframe) {
wwframe(w, framewin);
labelwin(w);
}
}
labelwin(w)
register struct ww *w;
{
int mode = w == selwin ? WWM_REV : 0;
if (!w->ww_hasframe)
return;
if (w->ww_id >= 0) {
char buf[2];
buf[0] = w->ww_id + '1';
buf[1] = 0;
wwlabel(w, framewin, 1, buf, mode);
}
if (w->ww_label) {
int col;
if (w->ww_center) {
col = (w->ww_w.nc - strlen(w->ww_label)) / 2;
col = MAX(3, col);
} else
col = 3;
wwlabel(w, framewin, col, w->ww_label, mode);
}
}
stopwin(w)
register struct ww *w;
{
if (w->ww_pty >= 0 && w->ww_ispty && wwstoptty(w->ww_pty) < 0)
error("Can't stop output: %s.", wwerror());
else
w->ww_stopped = 1;
}
startwin(w)
register struct ww *w;
{
if (w->ww_pty >= 0 && w->ww_ispty && wwstarttty(w->ww_pty) < 0)
error("Can't start output: %s.", wwerror());
else
w->ww_stopped = 0;
}
sizewin(w, nrow, ncol)
register struct ww *w;
{
struct ww *back = w->ww_back;
w->ww_alt.nr = w->ww_w.nr;
w->ww_alt.nc = w->ww_w.nc;
wwdelete(w);
if (wwsize(w, nrow, ncol) < 0)
error("Can't resize window: %s.", wwerror());
wwadd(w, back);
reframe();
}
waitnl(w)
struct ww *w;
{
(void) waitnl1(w, "[Type any key to continue]");
}
more(w, always)
register struct ww *w;
char always;
{
int c;
char uc = w->ww_unctrl;
if (!always && w->ww_cur.r < w->ww_w.b - 2)
return 0;
c = waitnl1(w, "[Type escape to abort, any other key to continue]");
w->ww_unctrl = 0;
wwputs("\033E", w);
w->ww_unctrl = uc;
return c == ctrl('[') ? 2 : 1;
}
waitnl1(w, prompt)
register struct ww *w;
char *prompt;
{
char uc = w->ww_unctrl;
w->ww_unctrl = 0;
front(w, 0);
wwprintf(w, "\033Y%c%c\033sA%s\033rA ",
w->ww_w.nr - 1 + ' ', ' ', prompt); /* print on last line */
wwcurtowin(w);
while (wwpeekc() < 0)
wwiomux();
w->ww_unctrl = uc;
return wwgetc();
}