[apple/shell_cmds.git] / window / win.c

/*	$NetBSD: win.c,v 1.10 1998/08/25 20:59:43 ross Exp $	*/

/*
 * 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.
 */

#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)win.c	8.1 (Berkeley) 6/6/93";
#else
__RCSID("$NetBSD: win.c,v 1.10 1998/08/25 20:59:43 ross Exp $");
#endif
#endif /* not lint */

#include <string.h>
#include "defs.h"
#include "char.h"
#include "window_string.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, type, uflags, shf, sh)
	int	id, row, col, nrow, ncol, nline;
	char   *label;
	int	type, uflags;
	char   *shf, **sh;
{
	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(type, 0, nrow, ncol, row, col, nline);
	if (w == 0) {
		error("Can't open window: %s.", wwerror());
		return 0;
	}
	w->ww_id = id;
	window[id] = w;
	CLR(w->ww_uflags, WWU_ALLFLAGS);
	SET(w->ww_uflags, uflags);
	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;
}

int
findid()
{
	int i;

	for (i = 0; i < NWINDOW && window[i] != 0; i++)
		;
	if (i >= NWINDOW) {
		error("Too many windows.");
		return -1;
	}
	return i;
}

struct ww *
findselwin()
{
	struct ww *w, *s = 0;
	int 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.
 */
void
closewin(w)
	struct ww *w;
{
	char didit = 0;
	int 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)
	int nrow;
	char *label;
{
	struct ww *w;

	if ((w = wwopen(WWT_INTERNAL, 0, nrow, wwncol, 2, 0, 0)) == 0)
		return 0;
	SET(w->ww_wflags, WWW_MAPNL | WWW_NOINTR | WWW_NOUPDATE | WWW_UNCTRL);
	SET(w->ww_uflags, WWU_HASFRAME | WWU_CENTER);
	w->ww_id = -1;
	(void) setlabel(w, label);
	addwin(w, 1);
	reframe();
	return w;
}

/*
 * Close an information window.
 */
void
closeiwin(w)
	struct ww *w;
{
	closewin1(w);
	reframe();
}

void
closewin1(w)
	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.
 */
void
front(w, doreframe)
	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.
 */
void
addwin(w, fg)
	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.
 */
void
deletewin(w)
	struct ww *w;
{
	if (fgwin == w)
		fgwin = w->ww_back;
	wwdelete(w);
}

void
reframe()
{
	struct ww *w;

	wwunframe(framewin);
	for (w = wwhead.ww_back; w != &wwhead; w = w->ww_back)
		if (ISSET(w->ww_uflags, WWU_HASFRAME)) {
			wwframe(w, framewin);
			labelwin(w);
		}
}

void
labelwin(w)
	struct ww *w;
{
	int mode = w == selwin ? WWM_REV : 0;

	if (!ISSET(w->ww_uflags, WWU_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 (ISSET(w->ww_uflags, WWU_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);
	}
}

void
stopwin(w)
	struct ww *w;
{
	if (w->ww_pty >= 0 && w->ww_type == WWT_PTY && wwstoptty(w->ww_pty) < 0)
		error("Can't stop output: %s.", wwerror());
	else
		SET(w->ww_pflags, WWP_STOPPED);
}

void
startwin(w)
	struct ww *w;
{
	if (w->ww_pty >= 0 && w->ww_type == WWT_PTY &&
	    wwstarttty(w->ww_pty) < 0)
		error("Can't start output: %s.", wwerror());
	else
		CLR(w->ww_pflags, WWP_STOPPED);
}

void
sizewin(w, nrow, ncol)
	struct ww *w;
	int nrow, ncol;
{
	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();
}

void
waitnl(w)
	struct ww *w;
{
	(void) waitnl1(w, "[Type any key to continue]");
}

int
more(w, always)
	struct ww *w;
	char always;
{
	int c;
	int uc = ISSET(w->ww_wflags, WWW_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]");
	CLR(w->ww_wflags, WWW_UNCTRL);
	wwputs("\033E", w);
	SET(w->ww_wflags, uc);
	return c == ctrl('[') ? 2 : 1;
}

int
waitnl1(w, prompt)
	struct ww *w;
	char *prompt;
{
	int uc = ISSET(w->ww_wflags, WWW_UNCTRL);

	CLR(w->ww_wflags, WWW_UNCTRL);
	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();
	SET(w->ww_wflags, uc);
	return wwgetc();
}
Commit	Line	Data
44bd5ea7 A	1	/* $NetBSD: win.c,v 1.10 1998/08/25 20:59:43 ross Exp $ */
	2
	3	/*
	4	* Copyright (c) 1983, 1993
	5	* The Regents of the University of California. All rights reserved.
	6	*
	7	* This code is derived from software contributed to Berkeley by
	8	* Edward Wang at The University of California, Berkeley.
	9	*
	10	* Redistribution and use in source and binary forms, with or without
	11	* modification, are permitted provided that the following conditions
	12	* are met:
	13	* 1. Redistributions of source code must retain the above copyright
	14	* notice, this list of conditions and the following disclaimer.
	15	* 2. Redistributions in binary form must reproduce the above copyright
	16	* notice, this list of conditions and the following disclaimer in the
	17	* documentation and/or other materials provided with the distribution.
	18	* 3. All advertising materials mentioning features or use of this software
	19	* must display the following acknowledgement:
	20	* This product includes software developed by the University of
	21	* California, Berkeley and its contributors.
	22	* 4. Neither the name of the University nor the names of its contributors
	23	* may be used to endorse or promote products derived from this software
	24	* without specific prior written permission.
	25	*
	26	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	27	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	28	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	29	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	30	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	31	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	32	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	33	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	34	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	35	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	36	* SUCH DAMAGE.
	37	*/
	38
	39	#include <sys/cdefs.h>
	40	#ifndef lint
	41	#if 0
	42	static char sccsid[] = "@(#)win.c 8.1 (Berkeley) 6/6/93";
	43	#else
	44	__RCSID("$NetBSD: win.c,v 1.10 1998/08/25 20:59:43 ross Exp $");
	45	#endif
	46	#endif /* not lint */
	47
	48	#include <string.h>
	49	#include "defs.h"
	50	#include "char.h"
	51	#include "window_string.h"
	52
	53	/*
	54	* Higher level routines for dealing with windows.
	55	*
	56	* There are two types of windows: user window, and information window.
	57	* User windows are the ones with a pty and shell. Information windows
	58	* are for displaying error messages, and other information.
	59	*
	60	* The windows are doubly linked in overlapping order and divided into
	61	* two groups: foreground and normal. Information
	62	* windows are always foreground. User windows can be either.
	63	* Addwin() adds a window to the list at the top of one of the two groups.
	64	* Deletewin() deletes a window. Front() moves a window to the front
65	* of its group. Wwopen(), wwadd(), and wwdelete() should never be called
66	* directly.
67	*/
68
69	/*
70	* Open a user window.
71	*/
72	struct ww *
73	openwin(id, row, col, nrow, ncol, nline, label, type, uflags, shf, sh)
74	int id, row, col, nrow, ncol, nline;
75	char *label;
76	int type, uflags;
77	char shf, *sh;
78	{
79	struct ww *w;
80
81	if (id < 0 && (id = findid()) < 0)
82	return 0;
83	if (row + nrow <= 0 \|\| row > wwnrow - 1
84	\|\| col + ncol <= 0 \|\| col > wwncol - 1) {
85	error("Illegal window position.");
86	return 0;
87	}
88	w = wwopen(type, 0, nrow, ncol, row, col, nline);
89	if (w == 0) {
90	error("Can't open window: %s.", wwerror());
91	return 0;
92	}
93	w->ww_id = id;
94	window[id] = w;
95	CLR(w->ww_uflags, WWU_ALLFLAGS);
96	SET(w->ww_uflags, uflags);
97	w->ww_alt = w->ww_w;
98	if (label != 0 && setlabel(w, label) < 0)
99	error("No memory for label.");
100	wwcursor(w, 1);
101	/*
102	* We have to do this little maneuver to make sure
103	* addwin() puts w at the top, so we don't waste an
104	* insert and delete operation.
105	*/
106	setselwin((struct ww *)0);
107	addwin(w, 0);
108	setselwin(w);
109	if (wwspawn(w, shf, sh) < 0) {
110	error("Can't execute %s: %s.", shf, wwerror());
111	closewin(w);
112	return 0;
113	}
114	return w;
115	}
116
117	int
118	findid()
119	{
120	int i;
121
122	for (i = 0; i < NWINDOW && window[i] != 0; i++)
123	;
124	if (i >= NWINDOW) {
125	error("Too many windows.");
126	return -1;
127	}
128	return i;
129	}
130
131	struct ww *
132	findselwin()
133	{
134	struct ww w, s = 0;
135	int i;
136
137	for (i = 0; i < NWINDOW; i++)
138	if ((w = window[i]) != 0 && w != selwin &&
139	(s == 0 \|\|
140	(!isfg(w) && (w->ww_order < s->ww_order \|\| isfg(s)))))
141	s = w;
142	return s;
143	}
144
145	/*
146	* Close a user window. Close all if w == 0.
147	*/
148	void
149	closewin(w)
150	struct ww *w;
151	{
152	char didit = 0;
153	int i;
154
155	if (w != 0) {
156	closewin1(w);
157	didit++;
158	} else
159	for (i = 0; i < NWINDOW; i++) {
160	if ((w = window[i]) == 0)
161	continue;
162	closewin1(w);
163	didit++;
164	}
165	if (didit) {
166	if (selwin == 0) {
167	if (lastselwin != 0) {
168	setselwin(lastselwin);
169	lastselwin = 0;
170	} else if ((w = findselwin()))
171	setselwin(w);
172	}
173	if (lastselwin == 0 && selwin)
174	if ((w = findselwin()))
175	lastselwin = w;
176	reframe();
177	}
178	}
179
180	/*
181	* Open an information (display) window.
182	*/
183	struct ww *
184	openiwin(nrow, label)
185	int nrow;
186	char *label;
187	{
188	struct ww *w;
189
190	if ((w = wwopen(WWT_INTERNAL, 0, nrow, wwncol, 2, 0, 0)) == 0)
191	return 0;
192	SET(w->ww_wflags, WWW_MAPNL \| WWW_NOINTR \| WWW_NOUPDATE \| WWW_UNCTRL);
193	SET(w->ww_uflags, WWU_HASFRAME \| WWU_CENTER);
194	w->ww_id = -1;
195	(void) setlabel(w, label);
196	addwin(w, 1);
197	reframe();
198	return w;
199	}
200
201	/*
202	* Close an information window.
203	*/
204	void
205	closeiwin(w)
206	struct ww *w;
207	{
208	closewin1(w);
209	reframe();
210	}
211
212	void
213	closewin1(w)
214	struct ww *w;
215	{
216	if (w == selwin)
217	selwin = 0;
218	if (w == lastselwin)
219	lastselwin = 0;
220	if (w->ww_id >= 0 && w->ww_id < NWINDOW)
221	window[w->ww_id] = 0;
222	if (w->ww_label)
223	str_free(w->ww_label);
224	deletewin(w);
225	wwclose(w);
226	}
227
228	/*
229	* Move the window to the top of its group.
230	* Don't do it if already fully visible.
231	* Wwvisible() doesn't work for tinted windows.
232	* But anything to make it faster.
233	* Always reframe() if doreframe is true.
234	*/
235	void
236	front(w, doreframe)
237	struct ww *w;
238	char doreframe;
239	{
240	if (w->ww_back != (isfg(w) ? framewin : fgwin) && !wwvisible(w)) {
241	deletewin(w);
242	addwin(w, isfg(w));
243	doreframe = 1;
244	}
245	if (doreframe)
246	reframe();
247	}
248
249	/*
250	* Add a window at the top of normal windows or foreground windows.
251	* For normal windows, we put it behind the current window.
252	*/
253	void
254	addwin(w, fg)
255	struct ww *w;
256	char fg;
257	{
258	if (fg) {
259	wwadd(w, framewin);
260	if (fgwin == framewin)
261	fgwin = w;
262	} else
263	wwadd(w, selwin != 0 && selwin != w && !isfg(selwin)
264	? selwin : fgwin);
265	}
266
267	/*
268	* Delete a window.
269	*/
270	void
271	deletewin(w)
272	struct ww *w;
273	{
274	if (fgwin == w)
275	fgwin = w->ww_back;
276	wwdelete(w);
277	}
278
279	void
280	reframe()
281	{
282	struct ww *w;
283
284	wwunframe(framewin);
285	for (w = wwhead.ww_back; w != &wwhead; w = w->ww_back)
286	if (ISSET(w->ww_uflags, WWU_HASFRAME)) {
287	wwframe(w, framewin);
288	labelwin(w);
289	}
290	}
291
292	void
293	labelwin(w)
294	struct ww *w;
295	{
296	int mode = w == selwin ? WWM_REV : 0;
297
298	if (!ISSET(w->ww_uflags, WWU_HASFRAME))
299	return;
300	if (w->ww_id >= 0) {
301	char buf[2];
302
303	buf[0] = w->ww_id + '1';
304	buf[1] = 0;
305	wwlabel(w, framewin, 1, buf, mode);
306	}
307	if (w->ww_label) {
308	int col;
309
310	if (ISSET(w->ww_uflags, WWU_CENTER)) {
311	col = (w->ww_w.nc - strlen(w->ww_label)) / 2;
312	col = MAX(3, col);
313	} else
314	col = 3;
315	wwlabel(w, framewin, col, w->ww_label, mode);
316	}
317	}
318
319	void
320	stopwin(w)
321	struct ww *w;
322	{
323	if (w->ww_pty >= 0 && w->ww_type == WWT_PTY && wwstoptty(w->ww_pty) < 0)
324	error("Can't stop output: %s.", wwerror());
325	else
326	SET(w->ww_pflags, WWP_STOPPED);
327	}
328
329	void
330	startwin(w)
331	struct ww *w;
332	{
333	if (w->ww_pty >= 0 && w->ww_type == WWT_PTY &&
334	wwstarttty(w->ww_pty) < 0)
335	error("Can't start output: %s.", wwerror());
336	else
337	CLR(w->ww_pflags, WWP_STOPPED);
338	}
339
340	void
341	sizewin(w, nrow, ncol)
342	struct ww *w;
343	int nrow, ncol;
344	{
345	struct ww *back = w->ww_back;
346
347	w->ww_alt.nr = w->ww_w.nr;
348	w->ww_alt.nc = w->ww_w.nc;
349	wwdelete(w);
350	if (wwsize(w, nrow, ncol) < 0)
351	error("Can't resize window: %s.", wwerror());
352	wwadd(w, back);
353	reframe();
354	}
355
356	void
357	waitnl(w)
358	struct ww *w;
359	{
360	(void) waitnl1(w, "[Type any key to continue]");
361	}
362
363	int
364	more(w, always)
365	struct ww *w;
366	char always;
367	{
368	int c;
369	int uc = ISSET(w->ww_wflags, WWW_UNCTRL);
370
371	if (!always && w->ww_cur.r < w->ww_w.b - 2)
372	return 0;
373	c = waitnl1(w, "[Type escape to abort, any other key to continue]");
374	CLR(w->ww_wflags, WWW_UNCTRL);
375	wwputs("\033E", w);
376	SET(w->ww_wflags, uc);
377	return c == ctrl('[') ? 2 : 1;
378	}
379
380	int
381	waitnl1(w, prompt)
382	struct ww *w;
383	char *prompt;
384	{
385	int uc = ISSET(w->ww_wflags, WWW_UNCTRL);
386
387	CLR(w->ww_wflags, WWW_UNCTRL);
388	front(w, 0);
389	wwprintf(w, "\033Y%c%c\033sA%s\033rA ",
390	w->ww_w.nr - 1 + ' ', ' ', prompt); /* print on last line */
391	wwcurtowin(w);
392	while (wwpeekc() < 0)
393	wwiomux();
394	SET(w->ww_wflags, uc);
395	return wwgetc();
396	}