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kernel - swapcache - vm_object_page_remove()
[dragonfly.git] / gnu / lib / libdialog / radiolist.c
blob3921aaeca2bb202f54e6966579c46dffda917a39
1 /*
2 * radiolist.c -- implements the radiolist box
3 *
4 * AUTHOR: Stuart Herbert - S.Herbert@sheffield.ac.uk
5 * (from checklist.c by Savio Lam (lam836@cs.cuhk.hk))
6 *
7 * Substantial rennovation: 12/18/95, Jordan K. Hubbard
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version 2
12 * of the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 *
23 * $FreeBSD: src/gnu/lib/libdialog/radiolist.c,v 1.36.2.2 2001/08/31 03:04:59 eric Exp $
24 * $DragonFly: src/gnu/lib/libdialog/radiolist.c,v 1.2 2003/06/17 04:25:43 dillon Exp $
25 */
26
27 #include <dialog.h>
28 #include "dialog.priv.h"
29
30
31 static void print_item(WINDOW *win, char *tag, char *item, int status, int choice, int selected, dialogMenuItem *me);
32
33 #define DREF(di, item) ((di) ? &((di)[(item)]) : NULL)
34
35 static int list_width, check_x, item_x;
36
37
38 /*
39 * Display a dialog box with a list of options that can be turned on or off
40 */
41 int
42 dialog_radiolist(unsigned char *title, unsigned char *prompt, int height, int width, int list_height,
43 int cnt, void *it, unsigned char *result)
44 {
45 int i, j, x, y, cur_x, cur_y, old_x, old_y, box_x, box_y, key = 0, button,
46 choice, l, k, scroll, max_choice, *status, item_no = 0, was_on = 0;
47 int redraw_menu = FALSE, cursor_reset = FALSE;
48 int rval = 0, onlist = 1, ok_space, cancel_space;
49 char okButton, cancelButton;
50 WINDOW *dialog, *list;
51 unsigned char **items = NULL;
52 dialogMenuItem *ditems;
53
54 /* Allocate space for storing item on/off status */
55 if ((status = alloca(sizeof(int) * abs(cnt))) == NULL) {
56 endwin();
57 fprintf(stderr, "\nCan't allocate memory in dialog_radiolist().\n");
58 exit(-1);
59 }
60
61 draw:
62 button = choice = scroll = 0;
63 /* Previous calling syntax, e.g. just a list of strings? */
64 if (cnt >= 0) {
65 items = it;
66 ditems = NULL;
67 item_no = cnt;
68 /* Initializes status */
69 for (i = 0; i < item_no; i++) {
70 status[i] = !strcasecmp(items[i*3 + 2], "on");
71 if (status[i]) {
72 if (was_on)
73 status[i] = FALSE;
74 else
75 was_on = 1;
76 }
77 }
78 }
79 /* It's the new specification format - fake the rest of the code out */
80 else {
81 item_no = abs(cnt);
82 ditems = it;
83 if (!items)
84 items = (unsigned char **)alloca((item_no * 3) * sizeof(unsigned char *));
85 /* Initializes status */
86 for (i = 0; i < item_no; i++) {
87 status[i] = ditems[i].checked ? ditems[i].checked(&ditems[i]) : FALSE;
88 if (status[i]) {
89 if (was_on)
90 status[i] = FALSE;
91 else
92 was_on = 1;
93 }
94 items[i*3] = ditems[i].prompt;
95 items[i*3 + 1] = ditems[i].title;
96 items[i*3 + 2] = status[i] ? "on" : "off";
97 }
98 }
99 max_choice = MIN(list_height, item_no);
100
101 check_x = 0;
102 item_x = 0;
103 /* Find length of longest item in order to center radiolist */
104 for (i = 0; i < item_no; i++) {
105 l = strlen(items[i * 3]);
106 for (j = 0; j < item_no; j++) {
107 k = strlen(items[j * 3 + 1]);
108 check_x = MAX(check_x, l + k + 6);
109 }
110 item_x = MAX(item_x, l);
111 }
112 if (height < 0)
113 height = strheight(prompt) + list_height + 4 + 2;
114 if (width < 0) {
115 i = strwidth(prompt);
116 j = ((title != NULL) ? strwidth(title) : 0);
117 width = MAX(i, j);
118 width = MAX(width, check_x + 4) + 4;
119 }
120 width = MAX(width, 24);
121
122 if (width > COLS)
123 width = COLS;
124 if (height > LINES)
125 height = LINES;
126 /* center dialog box on screen */
127 x = DialogX ? DialogX : (COLS - width) / 2;
128 y = DialogY ? DialogY : (LINES - height) / 2;
129
130 #ifdef HAVE_NCURSES
131 if (use_shadow)
132 draw_shadow(stdscr, y, x, height, width);
133 #endif
134 dialog = newwin(height, width, y, x);
135 if (dialog == NULL) {
136 endwin();
137 fprintf(stderr, "\nnewwin(%d,%d,%d,%d) failed, maybe wrong dims\n", height, width, y, x);
138 return -1;
139 }
140 keypad(dialog, TRUE);
141
142 draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
143 wattrset(dialog, border_attr);
144 wmove(dialog, height - 3, 0);
145 waddch(dialog, ACS_LTEE);
146 for (i = 0; i < width - 2; i++)
147 waddch(dialog, ACS_HLINE);
148 wattrset(dialog, dialog_attr);
149 waddch(dialog, ACS_RTEE);
150 wmove(dialog, height - 2, 1);
151 for (i = 0; i < width - 2; i++)
152 waddch(dialog, ' ');
153
154 if (title != NULL) {
155 wattrset(dialog, title_attr);
156 wmove(dialog, 0, (width - strlen(title)) / 2 - 1);
157 waddch(dialog, ' ');
158 waddstr(dialog, title);
159 waddch(dialog, ' ');
160 }
161 wattrset(dialog, dialog_attr);
162 wmove(dialog, 1, 2);
163 print_autowrap(dialog, prompt, height - 1, width - 2, width, 1, 2, TRUE, FALSE);
164
165 list_width = width - 6;
166 getyx(dialog, cur_y, cur_x);
167 box_y = cur_y + 1;
168 box_x = (width - list_width) / 2 - 1;
169
170 /* create new window for the list */
171 list = subwin(dialog, list_height, list_width, y + box_y + 1, x + box_x + 1);
172 if (list == NULL) {
173 delwin(dialog);
174 endwin();
175 fprintf(stderr, "\nsubwin(dialog,%d,%d,%d,%d) failed, maybe wrong dims\n", list_height, list_width,
176 y + box_y + 1,x + box_x + 1);
177 return -1;
178 }
179 keypad(list, TRUE);
180
181 /* draw a box around the list items */
182 draw_box(dialog, box_y, box_x, list_height+2, list_width+2, menubox_border_attr, menubox_attr);
183
184 check_x = (list_width - check_x) / 2;
185 item_x = check_x + item_x + 6;
186
187 /* Print the list */
188 for (i = 0; i < max_choice; i++)
189 print_item(list, items[i * 3], items[i * 3 + 1], status[i], i, i == choice, DREF(ditems, i));
190 wnoutrefresh(list);
191 print_arrows(dialog, scroll, list_height, item_no, box_x, box_y, check_x + 4, cur_x, cur_y);
192
193 display_helpline(dialog, height-1, width);
194
195 x = width/ 2 - 11;
196 y = height - 2;
197 if (ditems && result) {
198 cancelButton = toupper(ditems[CANCEL_BUTTON].prompt[0]);
199 print_button(dialog, ditems[CANCEL_BUTTON].prompt, y, x + strlen(ditems[OK_BUTTON].prompt) + 5,
200 ditems[CANCEL_BUTTON].checked ? ditems[CANCEL_BUTTON].checked(&ditems[CANCEL_BUTTON]) : FALSE);
201 okButton = toupper(ditems[OK_BUTTON].prompt[0]);
202 print_button(dialog, ditems[OK_BUTTON].prompt, y, x,
203 ditems[OK_BUTTON].checked ? ditems[OK_BUTTON].checked(&ditems[OK_BUTTON]) : TRUE);
204 }
205 else {
206 cancelButton = 'C';
207 print_button(dialog, "Cancel", y, x + 14, FALSE);
208 okButton = 'O';
209 print_button(dialog, " OK ", y, x, TRUE);
210 }
211 wnoutrefresh(dialog);
212 wmove(list, choice, check_x+1);
213 wrefresh(list);
214
215 while (key != ESC) {
216 key = wgetch(dialog);
217
218 /* See if its the short-cut to "OK" */
219 if (toupper(key) == okButton) {
220 if (ditems) {
221 if (result && ditems[OK_BUTTON].fire) {
222 int st;
223 WINDOW *save;
224
225 save = dupwin(newscr);
226 st = ditems[OK_BUTTON].fire(&ditems[OK_BUTTON]);
227 if (st & DITEM_RESTORE) {
228 touchwin(save);
229 wrefresh(save);
230 }
231 delwin(save);
232 }
233 }
234 else if (result) {
235 *result = '\0';
236 for (i = 0; i < item_no; i++) {
237 if (status[i]) {
238 strcat(result, items[i*3]);
239 break;
240 }
241 }
242 }
243 rval = 0;
244 key = ESC;
245 break;
246 }
247
248 /* Shortcut to cancel */
249 if (toupper(key) == cancelButton) {
250 if (ditems && result && ditems[CANCEL_BUTTON].fire) {
251 int st;
252 WINDOW *save;
253
254 save = dupwin(newscr);
255 st = ditems[CANCEL_BUTTON].fire(&ditems[CANCEL_BUTTON]);
256 if (st & DITEM_RESTORE) {
257 touchwin(save);
258 wrefresh(save);
259 }
260 delwin(save);
261 }
262 rval = 1;
263 key = ESC;
264 break;
265 }
266
267 /* Check if key pressed matches first character of any item tag in list */
268 for (i = 0; i < max_choice; i++)
269 if (key != ' ' && toupper(key) == toupper(items[(scroll + i) * 3][0]))
270 break;
271
272 if (i < max_choice || (key >= '1' && key <= MIN('9', '0' + max_choice)) ||
273 KEY_IS_UP(key) || KEY_IS_DOWN(key) || ((key == ' ' || key == '\r' || key == '\n') && onlist == 1)) {
274
275 /* if moving from buttons to the list, reset and redraw buttons */
276 if (!onlist) {
277 onlist = 1;
278 button = 0;
279
280 if (ditems && result ) {
281 print_button(dialog, ditems[CANCEL_BUTTON].prompt, y, x + strlen(ditems[OK_BUTTON].prompt) + 5,
282 ditems[CANCEL_BUTTON].checked ? ditems[CANCEL_BUTTON].checked(&ditems[CANCEL_BUTTON]) : button);
283 print_button(dialog, ditems[OK_BUTTON].prompt, y, x,
284 ditems[OK_BUTTON].checked ? ditems[OK_BUTTON].checked(&ditems[OK_BUTTON]) : !button);
285 }
286 else {
287 print_button(dialog, "Cancel", y, x + 14, button);
288 print_button(dialog, " OK ", y, x, !button);
289 }
290 }
291 wmove(list, choice, check_x+1);
292 wnoutrefresh(dialog);
293 wrefresh(list);
294
295 if (key >= '1' && key <= MIN('9', '0' + max_choice))
296 i = key - '1';
297 else if (KEY_IS_UP(key)) {
298 if (!choice) {
299 if (scroll) {
300 /* Scroll list down */
301 getyx(dialog, cur_y, cur_x); /* Save cursor position */
302 if (list_height > 1) {
303 /* De-highlight current first item before scrolling down */
304 print_item(list, items[scroll*3], items[scroll*3 + 1], status[scroll], 0,
305 FALSE, DREF(ditems, scroll));
306 scrollok(list, TRUE);
307 wscrl(list, -1);
308 scrollok(list, FALSE);
309 }
310 scroll--;
311 print_item(list, items[scroll*3], items[scroll*3 + 1], status[scroll], 0,
312 TRUE, DREF(ditems, scroll));
313 print_arrows(dialog, scroll, list_height, item_no, box_x, box_y, check_x + 4, cur_x, cur_y);
314 wmove(list, choice, check_x+1);
315 wnoutrefresh(dialog);
316 wrefresh(list);
317 }
318 continue; /* wait for another key press */
319 }
320 else
321 i = choice - 1;
322 }
323 else if (KEY_IS_DOWN(key)) {
324 if (choice == max_choice - 1) {
325 if (scroll + choice < item_no - 1) {
326 /* Scroll list up */
327 getyx(dialog, cur_y, cur_x); /* Save cursor position */
328 if (list_height > 1) {
329 /* De-highlight current last item before scrolling up */
330 print_item(list, items[(scroll + max_choice - 1) * 3],
331 items[(scroll + max_choice - 1) * 3 + 1],
332 status[scroll + max_choice - 1], max_choice - 1,
333 FALSE, DREF(ditems, scroll + max_choice - 1));
334 scrollok(list, TRUE);
335 scroll(list);
336 scrollok(list, FALSE);
337 }
338 scroll++;
339 print_item(list, items[(scroll + max_choice - 1) * 3],
340 items[(scroll + max_choice - 1) * 3 + 1],
341 status[scroll + max_choice - 1], max_choice - 1,
342 TRUE, DREF(ditems, scroll + max_choice - 1));
343 print_arrows(dialog, scroll, list_height, item_no, box_x, box_y, check_x + 4, cur_x, cur_y);
344 wmove(list, choice, check_x+1);
345 wnoutrefresh(dialog);
346 wrefresh(list);
347 }
348 continue; /* wait for another key press */
349 }
350 else
351 i = choice + 1;
352 }
353 else if ((key == ' ' || key == '\r' || key == '\n') && onlist) { /* Toggle item status */
354 getyx(list, old_y, old_x); /* Save cursor position */
355 if (status[scroll + choice])
356 continue;
357 else if (ditems) {
358 if (ditems[scroll + choice].fire) {
359 int st;
360 WINDOW *save;
361
362 save = dupwin(newscr);
363 st = ditems[scroll + choice].fire(&ditems[scroll + choice]);
364 if (st & DITEM_RESTORE) {
365 touchwin(save);
366 wrefresh(save);
367 }
368 delwin(save);
369 if (st & DITEM_REDRAW) {
370 wclear(list);
371 for (i = 0; i < item_no; i++)
372 status[i] = ditems[i].checked ? ditems[i].checked(&ditems[i]) : FALSE;
373
374 for (i = 0; i < max_choice; i++) {
375 print_item(list, items[(scroll + i) * 3], items[(scroll + i) * 3 + 1],
376 status[scroll + i], i, i == choice,
377 DREF(ditems, scroll + i));
378 }
379 /* wmove(list, old_y, old_x);*/ /* Restore cursor to previous position */
380 /* wrefresh(list); */
381 }
382 if (st & DITEM_LEAVE_MENU) {
383 /* Allow a fire action to take us out of the menu */
384 key = ESC;
385 break;
386 }
387 else if (st & DITEM_RECREATE) {
388 delwin(list);
389 delwin(dialog);
390 dialog_clear();
391 goto draw;
392 }
393 }
394 for (i = 0; i < item_no; i++)
395 status[i] = ditems[i].checked ? ditems[i].checked(&ditems[i]) : FALSE;
396 }
397 else {
398 for (i = 0; i < item_no; i++)
399 status[i] = 0;
400 status[scroll + choice] = TRUE;
401 }
402 for (i = 0; i < max_choice; i++)
403 print_item(list, items[(scroll + i) * 3], items[(scroll + i) * 3 + 1],
404 status[scroll + i], i, i == choice, DREF(ditems, scroll + i));
405 wmove(list, choice, check_x+1); /* Restore cursor position */
406 wrefresh(list);
407 continue; /* wait for another key press */
408 }
409
410 if (i != choice) {
411 /* De-highlight current item */
412 print_item(list, items[(scroll + choice) * 3], items[(scroll + choice) * 3 +1],
413 status[scroll + choice], choice, FALSE, DREF(ditems, scroll + choice));
414 /* Highlight new item */
415 choice = i;
416 print_item(list, items[(scroll + choice) * 3], items[(scroll + choice) * 3 + 1],
417 status[scroll + choice], choice, TRUE, DREF(ditems, scroll + choice));
418 wmove(list, choice, check_x+1); /* Restore cursor position */
419 wrefresh(list);
420 }
421 continue; /* wait for another key press */
422 }
423
424 switch (key) {
425 case KEY_PPAGE:
426 if (scroll > height-4) /* can we go up? */
427 scroll -= (height-4);
428 else
429 scroll = 0;
430 redraw_menu = TRUE;
431 if (!onlist) {
432 onlist = 1;
433 button = 0;
434 }
435 break;
436
437 case KEY_NPAGE:
438 if (scroll + list_height >= item_no-1 - list_height) { /* can we go down a full page? */
439 scroll = item_no - list_height;
440 if (scroll < 0)
441 scroll = 0;
442 }
443 else
444 scroll += list_height;
445 redraw_menu = TRUE;
446 if (!onlist) {
447 onlist = 1;
448 button = 0;
449 }
450 break;
451
452 case KEY_HOME:
453 scroll = 0;
454 choice = 0;
455 redraw_menu = TRUE;
456 cursor_reset = TRUE;
457 onlist = 1;
458 break;
459
460 case KEY_END:
461 scroll = item_no - list_height;
462 if (scroll < 0)
463 scroll = 0;
464 choice = max_choice - 1;
465 redraw_menu = TRUE;
466 cursor_reset = TRUE;
467 onlist = 1;
468 break;
469
470 case TAB:
471 case KEY_BTAB:
472 /* move to next component */
473 if (onlist) { /* on list, next is ok button */
474 onlist = 0;
475 if (ditems && result)
476 ok_space = 1;
477 else
478 ok_space = 3;
479 wmove(dialog, y, x + ok_space);
480 wrefresh(dialog);
481 break;
482 }
483 else if (button) { /* on cancel button, next is list */
484 button = 0;
485 onlist = 1;
486 redraw_menu = TRUE;
487 break;
488 }
489 /* on ok button, next is cancel button, same as left/right case */
490
491 case KEY_LEFT:
492 case KEY_RIGHT:
493 onlist = 0;
494 button = !button;
495 if (ditems && result) {
496 print_button(dialog, ditems[CANCEL_BUTTON].prompt, y, x + strlen(ditems[OK_BUTTON].prompt) + 5,
497 ditems[CANCEL_BUTTON].checked ? ditems[CANCEL_BUTTON].checked(&ditems[CANCEL_BUTTON]) : button);
498 print_button(dialog, ditems[OK_BUTTON].prompt, y, x,
499 ditems[OK_BUTTON].checked ? ditems[OK_BUTTON].checked(&ditems[OK_BUTTON]) : !button);
500 ok_space = 1;
501 cancel_space = strlen(ditems[OK_BUTTON].prompt) + 6;
502 }
503 else {
504 print_button(dialog, "Cancel", y, x + 14, button);
505 print_button(dialog, " OK ", y, x, !button);
506 ok_space = 3;
507 cancel_space = 15;
508 }
509 if (button)
510 wmove(dialog, y, x + cancel_space);
511 else
512 wmove(dialog, y, x + ok_space);
513 wrefresh(dialog);
514 break;
515
516 case ' ':
517 case '\r':
518 case '\n':
519 if (!onlist) {
520 if (ditems) {
521 if (result && ditems[button ? CANCEL_BUTTON : OK_BUTTON].fire) {
522 int st;
523 WINDOW *save;
524
525 save = dupwin(newscr);
526 st = ditems[button ? CANCEL_BUTTON : OK_BUTTON].fire(&ditems[button ? CANCEL_BUTTON : OK_BUTTON]);
527 if (st & DITEM_RESTORE) {
528 touchwin(save);
529 wrefresh(save);
530 }
531 delwin(save);
532 }
533 }
534 else if (result) {
535 *result = '\0';
536 for (i = 0; i < item_no; i++) {
537 if (status[i]) {
538 strcpy(result, items[i*3]);
539 break;
540 }
541 }
542 }
543 rval = button;
544 key = ESC;
545 break;
546 }
547
548 case ESC:
549 rval = -1;
550 break;
551
552 case KEY_F(1):
553 case '?':
554 display_helpfile();
555 break;
556 }
557
558 if (redraw_menu) {
559 getyx(list, old_y, old_x);
560 wclear(list);
561 for (i = 0; i < max_choice; i++)
562 print_item(list, items[(scroll + i) * 3], items[(scroll + i) * 3 + 1], status[scroll + i],
563 i, i == choice, DREF(ditems, scroll + i));
564 print_arrows(dialog, scroll, list_height, item_no, box_x, box_y, check_x + 4, cur_x, cur_y);
565
566 /* redraw buttons to fix highlighting */
567 if (ditems && result) {
568 print_button(dialog, ditems[CANCEL_BUTTON].prompt, y, x + strlen(ditems[OK_BUTTON].prompt) + 5,
569 ditems[CANCEL_BUTTON].checked ? ditems[CANCEL_BUTTON].checked(&ditems[CANCEL_BUTTON]) : button);
570 print_button(dialog, ditems[OK_BUTTON].prompt, y, x,
571 ditems[OK_BUTTON].checked ? ditems[OK_BUTTON].checked(&ditems[OK_BUTTON]) : !button);
572 }
573 else {
574 print_button(dialog, "Cancel", y, x + 14, button);
575 print_button(dialog, " OK ", y, x, !button);
576 }
577 wnoutrefresh(dialog);
578 if (cursor_reset) {
579 wmove(list, choice, check_x+1);
580 cursor_reset = FALSE;
581 }
582 else {
583 wmove(list, old_y, old_x);
584 }
585 wrefresh(list);
586 redraw_menu = FALSE;
587 }
588 }
589
590 delwin(list);
591 delwin(dialog);
592 return rval; /* ESC pressed */
593 }
594
595 /*
596 * Print list item
597 */
598 static void
599 print_item(WINDOW *win, char *tag, char *item, int status, int choice, int selected, dialogMenuItem *me)
600 {
601 int i;
602
603 /* Clear 'residue' of last item */
604 wattrset(win, menubox_attr);
605 wmove(win, choice, 0);
606 for (i = 0; i < list_width; i++)
607 waddch(win, ' ');
608 wmove(win, choice, check_x);
609 wattrset(win, selected ? check_selected_attr : check_attr);
610 wprintw(win, "%c%c%c", me && me->lbra ? me->lbra : '(',
611 status ? me && me->mark ? me->mark : '*' : ' ',
612 me && me->rbra ? me->rbra : ')');
613 wattrset(win, menubox_attr);
614 waddch(win, ' ');
615 wattrset(win, selected ? tag_key_selected_attr : tag_key_attr);
616 waddch(win, tag[0]);
617 wattrset(win, selected ? tag_selected_attr : tag_attr);
618 waddstr(win, tag + 1);
619 wmove(win, choice, item_x);
620 wattrset(win, selected ? item_selected_attr : item_attr);
621 waddstr(win, item);
622 /* If have a selection handler for this, call it */
623 if (me && me->selected) {
624 wrefresh(win);
625 me->selected(me, selected);
626 }
627 }
628 /* End of print_item() */
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