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btxld(8): Convert to hostprog.
[dragonfly.git] / contrib / dialog / treeview.c
blobc1fda152f63e36c200b8e33c20ae9532cc3c98ab
1 /*
2 * $Id: treeview.c,v 1.25 2015/01/25 23:54:02 tom Exp $
3 *
4 * treeview.c -- implements the treeview dialog
5 *
6 * Copyright 2012-2013,2015 Thomas E. Dickey
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU Lesser General Public License, version 2.1
10 * as published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this program; if not, write to
19 * Free Software Foundation, Inc.
20 * 51 Franklin St., Fifth Floor
21 * Boston, MA 02110, USA.
22 */
23
24 #include <dialog.h>
25 #include <dlg_keys.h>
26
27 #define INDENT 3
28 #define MIN_HIGH (1 + (5 * MARGIN))
29
30 typedef struct {
31 /* the outer-window */
32 WINDOW *dialog;
33 bool is_check;
34 int box_y;
35 int box_x;
36 int check_x;
37 int item_x;
38 int use_height;
39 int use_width;
40 /* the inner-window */
41 WINDOW *list;
42 DIALOG_LISTITEM *items;
43 int item_no;
44 int *depths;
45 const char *states;
46 } ALL_DATA;
47
48 /*
49 * Print list item. The 'selected' parameter is true if 'choice' is the
50 * current item. That one is colored differently from the other items.
51 */
52 static void
53 print_item(ALL_DATA * data,
54 DIALOG_LISTITEM * item,
55 const char *states,
56 int depths,
57 int choice,
58 int selected)
59 {
60 WINDOW *win = data->list;
61 chtype save = dlg_get_attrs(win);
62 int i;
63 bool first = TRUE;
64 int climit = (getmaxx(win) - data->check_x + 1);
65 const char *show = (dialog_vars.no_items
66 ? item->name
67 : item->text);
68
69 /* Clear 'residue' of last item */
70 (void) wattrset(win, menubox_attr);
71 (void) wmove(win, choice, 0);
72 for (i = 0; i < data->use_width; i++)
73 (void) waddch(win, ' ');
74
75 (void) wmove(win, choice, data->check_x);
76 (void) wattrset(win, selected ? check_selected_attr : check_attr);
77 (void) wprintw(win,
78 data->is_check ? "[%c]" : "(%c)",
79 states[item->state]);
80 (void) wattrset(win, menubox_attr);
81
82 (void) wattrset(win, selected ? item_selected_attr : item_attr);
83 for (i = 0; i < depths; ++i) {
84 int j;
85 (void) wmove(win, choice, data->item_x + INDENT * i);
86 (void) waddch(win, ACS_VLINE);
87 for (j = INDENT - 1; j > 0; --j)
88 (void) waddch(win, ' ');
89 }
90 (void) wmove(win, choice, data->item_x + INDENT * depths);
91
92 dlg_print_listitem(win, show, climit, first, selected);
93
94 if (selected) {
95 dlg_item_help(item->help);
96 }
97 (void) wattrset(win, save);
98 }
99
100 static void
101 print_list(ALL_DATA * data,
102 int choice,
103 int scrollamt,
104 int max_choice)
105 {
106 int i;
107 int cur_y, cur_x;
108
109 getyx(data->dialog, cur_y, cur_x);
110
111 for (i = 0; i < max_choice; i++) {
112 print_item(data,
113 &data->items[scrollamt + i],
114 data->states,
115 data->depths[scrollamt + i],
116 i, i == choice);
117 }
118 (void) wnoutrefresh(data->list);
119
120 dlg_draw_scrollbar(data->dialog,
121 (long) (scrollamt),
122 (long) (scrollamt),
123 (long) (scrollamt + max_choice),
124 (long) (data->item_no),
125 data->box_x + data->check_x,
126 data->box_x + data->use_width,
127 data->box_y,
128 data->box_y + data->use_height + 1,
129 menubox_border2_attr,
130 menubox_border_attr);
131
132 (void) wmove(data->dialog, cur_y, cur_x);
133 }
134
135 static bool
136 check_hotkey(DIALOG_LISTITEM * items, int choice)
137 {
138 bool result = FALSE;
139
140 if (dlg_match_char(dlg_last_getc(),
141 (dialog_vars.no_tags
142 ? items[choice].text
143 : items[choice].name))) {
144 result = TRUE;
145 }
146 return result;
147 }
148
149 /*
150 * This is an alternate interface to 'treeview' which allows the application
151 * to read the list item states back directly without putting them in the
152 * output buffer.
153 */
154 int
155 dlg_treeview(const char *title,
156 const char *cprompt,
157 int height,
158 int width,
159 int list_height,
160 int item_no,
161 DIALOG_LISTITEM * items,
162 const char *states,
163 int *depths,
164 int flag,
165 int *current_item)
166 {
167 /* *INDENT-OFF* */
168 static DLG_KEYS_BINDING binding[] = {
169 HELPKEY_BINDINGS,
170 ENTERKEY_BINDINGS,
171 DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_RIGHT ),
172 DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ),
173 DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ),
174 DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_LEFT ),
175 DLG_KEYS_DATA( DLGK_ITEM_FIRST, KEY_HOME ),
176 DLG_KEYS_DATA( DLGK_ITEM_LAST, KEY_END ),
177 DLG_KEYS_DATA( DLGK_ITEM_LAST, KEY_LL ),
178 DLG_KEYS_DATA( DLGK_ITEM_NEXT, '+' ),
179 DLG_KEYS_DATA( DLGK_ITEM_NEXT, KEY_DOWN ),
180 DLG_KEYS_DATA( DLGK_ITEM_NEXT, CHR_NEXT ),
181 DLG_KEYS_DATA( DLGK_ITEM_PREV, '-' ),
182 DLG_KEYS_DATA( DLGK_ITEM_PREV, KEY_UP ),
183 DLG_KEYS_DATA( DLGK_ITEM_PREV, CHR_PREVIOUS ),
184 DLG_KEYS_DATA( DLGK_PAGE_NEXT, KEY_NPAGE ),
185 DLG_KEYS_DATA( DLGK_PAGE_NEXT, DLGK_MOUSE(KEY_NPAGE) ),
186 DLG_KEYS_DATA( DLGK_PAGE_PREV, KEY_PPAGE ),
187 DLG_KEYS_DATA( DLGK_PAGE_PREV, DLGK_MOUSE(KEY_PPAGE) ),
188 END_KEYS_BINDING
189 };
190 /* *INDENT-ON* */
191
192 #ifdef KEY_RESIZE
193 int old_height = height;
194 int old_width = width;
195 #endif
196 ALL_DATA all;
197 int i, j, key2, found, x, y, cur_y, box_x, box_y;
198 int key = 0, fkey;
199 int button = dialog_state.visit_items ? -1 : dlg_default_button();
200 int choice = dlg_default_listitem(items);
201 int scrollamt = 0;
202 int max_choice;
203 int was_mouse;
204 int use_height;
205 int use_width, name_width, text_width, tree_width;
206 int result = DLG_EXIT_UNKNOWN;
207 int num_states;
208 WINDOW *dialog, *list;
209 char *prompt = dlg_strclone(cprompt);
210 const char **buttons = dlg_ok_labels();
211 const char *widget_name;
212
213 /* we need at least two states */
214 if (states == 0 || strlen(states) < 2)
215 states = " *";
216 num_states = (int) strlen(states);
217
218 dialog_state.plain_buttons = TRUE;
219
220 memset(&all, 0, sizeof(all));
221 all.items = items;
222 all.item_no = item_no;
223 all.states = states;
224 all.depths = depths;
225
226 dlg_does_output();
227 dlg_tab_correct_str(prompt);
228
229 /*
230 * If this is a radiobutton list, ensure that no more than one item is
231 * selected initially. Allow none to be selected, since some users may
232 * wish to provide this flavor.
233 */
234 if (flag == FLAG_RADIO) {
235 bool first = TRUE;
236
237 for (i = 0; i < item_no; i++) {
238 if (items[i].state) {
239 if (first) {
240 first = FALSE;
241 } else {
242 items[i].state = 0;
243 }
244 }
245 }
246 } else {
247 all.is_check = TRUE;
248 }
249 widget_name = "treeview";
250 #ifdef KEY_RESIZE
251 retry:
252 #endif
253
254 use_height = list_height;
255 use_width = dlg_calc_list_width(item_no, items) + 10;
256 use_width = MAX(26, use_width);
257 if (use_height == 0) {
258 /* calculate height without items (4) */
259 dlg_auto_size(title, prompt, &height, &width, MIN_HIGH, use_width);
260 dlg_calc_listh(&height, &use_height, item_no);
261 } else {
262 dlg_auto_size(title, prompt, &height, &width, MIN_HIGH + use_height, use_width);
263 }
264 dlg_button_layout(buttons, &width);
265 dlg_print_size(height, width);
266 dlg_ctl_size(height, width);
267
268 x = dlg_box_x_ordinate(width);
269 y = dlg_box_y_ordinate(height);
270
271 dialog = dlg_new_window(height, width, y, x);
272 dlg_register_window(dialog, widget_name, binding);
273 dlg_register_buttons(dialog, widget_name, buttons);
274
275 dlg_mouse_setbase(x, y);
276
277 dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr);
278 dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr);
279 dlg_draw_title(dialog, title);
280
281 (void) wattrset(dialog, dialog_attr);
282 dlg_print_autowrap(dialog, prompt, height, width);
283
284 all.use_width = width - 4;
285 cur_y = getcury(dialog);
286 box_y = cur_y + 1;
287 box_x = (width - all.use_width) / 2 - 1;
288
289 /*
290 * After displaying the prompt, we know how much space we really have.
291 * Limit the list to avoid overwriting the ok-button.
292 */
293 if (use_height + MIN_HIGH > height - cur_y)
294 use_height = height - MIN_HIGH - cur_y;
295 if (use_height <= 0)
296 use_height = 1;
297
298 max_choice = MIN(use_height, item_no);
299
300 /* create new window for the list */
301 list = dlg_sub_window(dialog, use_height, all.use_width,
302 y + box_y + 1, x + box_x + 1);
303
304 /* draw a box around the list items */
305 dlg_draw_box(dialog, box_y, box_x,
306 use_height + 2 * MARGIN,
307 all.use_width + 2 * MARGIN,
308 menubox_border_attr, menubox_border2_attr);
309
310 text_width = 0;
311 name_width = 0;
312 tree_width = 0;
313 /* Find length of longest item to center treeview */
314 for (i = 0; i < item_no; i++) {
315 tree_width = MAX(tree_width, INDENT * depths[i]);
316 text_width = MAX(text_width, dlg_count_columns(items[i].text));
317 name_width = MAX(name_width, dlg_count_columns(items[i].name));
318 }
319 if (dialog_vars.no_tags && !dialog_vars.no_items) {
320 tree_width += text_width;
321 } else if (dialog_vars.no_items) {
322 tree_width += name_width;
323 } else {
324 tree_width += (text_width + name_width);
325 }
326
327 use_width = (all.use_width - 4);
328 tree_width = MIN(tree_width, all.use_width);
329
330 all.check_x = (use_width - tree_width) / 2;
331 all.item_x = ((dialog_vars.no_tags
332 ? 0
333 : (dialog_vars.no_items
334 ? 0
335 : (2 + name_width)))
336 + all.check_x + 4);
337
338 /* ensure we are scrolled to show the current choice */
339 if (choice >= (max_choice + scrollamt)) {
340 scrollamt = choice - max_choice + 1;
341 choice = max_choice - 1;
342 }
343
344 /* register the new window, along with its borders */
345 dlg_mouse_mkbigregion(box_y + 1, box_x,
346 use_height, all.use_width + 2,
347 KEY_MAX, 1, 1, 1 /* by lines */ );
348
349 all.dialog = dialog;
350 all.box_x = box_x;
351 all.box_y = box_y;
352 all.use_height = use_height;
353 all.list = list;
354 print_list(&all, choice, scrollamt, max_choice);
355
356 dlg_draw_buttons(dialog, height - 2, 0, buttons, button, FALSE, width);
357
358 dlg_trace_win(dialog);
359 while (result == DLG_EXIT_UNKNOWN) {
360 if (button < 0) /* --visit-items */
361 wmove(dialog, box_y + choice + 1, box_x + all.check_x + 2);
362
363 key = dlg_mouse_wgetch(dialog, &fkey);
364 if (dlg_result_key(key, fkey, &result))
365 break;
366
367 was_mouse = (fkey && is_DLGK_MOUSE(key));
368 if (was_mouse)
369 key -= M_EVENT;
370
371 if (was_mouse && (key >= KEY_MAX)) {
372 i = (key - KEY_MAX);
373 if (i < max_choice) {
374 choice = (key - KEY_MAX);
375 print_list(&all, choice, scrollamt, max_choice);
376
377 key = ' '; /* force the selected item to toggle */
378 } else {
379 beep();
380 continue;
381 }
382 fkey = FALSE;
383 } else if (was_mouse && key >= KEY_MIN) {
384 key = dlg_lookup_key(dialog, key, &fkey);
385 }
386
387 /*
388 * A space toggles the item status.
389 */
390 if (key == ' ') {
391 int current = scrollamt + choice;
392 int next = items[current].state + 1;
393
394 if (next >= num_states)
395 next = 0;
396
397 if (flag == FLAG_CHECK) { /* checklist? */
398 items[current].state = next;
399 } else {
400 for (i = 0; i < item_no; i++) {
401 if (i != current) {
402 items[i].state = 0;
403 }
404 }
405 if (items[current].state) {
406 items[current].state = next ? next : 1;
407 } else {
408 items[current].state = 1;
409 }
410 }
411 print_list(&all, choice, scrollamt, max_choice);
412 continue; /* wait for another key press */
413 }
414
415 /*
416 * Check if key pressed matches first character of any item tag in
417 * list. If there is more than one match, we will cycle through
418 * each one as the same key is pressed repeatedly.
419 */
420 found = FALSE;
421 if (!fkey) {
422 if (button < 0 || !dialog_state.visit_items) {
423 for (j = scrollamt + choice + 1; j < item_no; j++) {
424 if (check_hotkey(items, j)) {
425 found = TRUE;
426 i = j - scrollamt;
427 break;
428 }
429 }
430 if (!found) {
431 for (j = 0; j <= scrollamt + choice; j++) {
432 if (check_hotkey(items, j)) {
433 found = TRUE;
434 i = j - scrollamt;
435 break;
436 }
437 }
438 }
439 if (found)
440 dlg_flush_getc();
441 } else if ((j = dlg_char_to_button(key, buttons)) >= 0) {
442 button = j;
443 ungetch('\n');
444 continue;
445 }
446 }
447
448 /*
449 * A single digit (1-9) positions the selection to that line in the
450 * current screen.
451 */
452 if (!found
453 && (key <= '9')
454 && (key > '0')
455 && (key - '1' < max_choice)) {
456 found = TRUE;
457 i = key - '1';
458 }
459
460 if (!found) {
461 if (fkey) {
462 found = TRUE;
463 switch (key) {
464 case DLGK_ITEM_FIRST:
465 i = -scrollamt;
466 break;
467 case DLGK_ITEM_LAST:
468 i = item_no - 1 - scrollamt;
469 break;
470 case DLGK_PAGE_PREV:
471 if (choice)
472 i = 0;
473 else if (scrollamt != 0)
474 i = -MIN(scrollamt, max_choice);
475 else
476 continue;
477 break;
478 case DLGK_PAGE_NEXT:
479 i = MIN(choice + max_choice, item_no - scrollamt - 1);
480 break;
481 case DLGK_ITEM_PREV:
482 i = choice - 1;
483 if (choice == 0 && scrollamt == 0)
484 continue;
485 break;
486 case DLGK_ITEM_NEXT:
487 i = choice + 1;
488 if (scrollamt + choice >= item_no - 1)
489 continue;
490 break;
491 default:
492 found = FALSE;
493 break;
494 }
495 }
496 }
497
498 if (found) {
499 if (i != choice) {
500 if (i < 0 || i >= max_choice) {
501 if (i < 0) {
502 scrollamt += i;
503 choice = 0;
504 } else {
505 choice = max_choice - 1;
506 scrollamt += (i - max_choice + 1);
507 }
508 print_list(&all, choice, scrollamt, max_choice);
509 } else {
510 choice = i;
511 print_list(&all, choice, scrollamt, max_choice);
512 }
513 }
514 continue; /* wait for another key press */
515 }
516
517 if (fkey) {
518 switch (key) {
519 case DLGK_ENTER:
520 result = dlg_enter_buttoncode(button);
521 break;
522 case DLGK_FIELD_PREV:
523 button = dlg_prev_button(buttons, button);
524 dlg_draw_buttons(dialog, height - 2, 0, buttons, button,
525 FALSE, width);
526 break;
527 case DLGK_FIELD_NEXT:
528 button = dlg_next_button(buttons, button);
529 dlg_draw_buttons(dialog, height - 2, 0, buttons, button,
530 FALSE, width);
531 break;
532 #ifdef KEY_RESIZE
533 case KEY_RESIZE:
534 /* reset data */
535 height = old_height;
536 width = old_width;
537 /* repaint */
538 dlg_clear();
539 dlg_del_window(dialog);
540 refresh();
541 dlg_mouse_free_regions();
542 goto retry;
543 #endif
544 default:
545 if (was_mouse) {
546 if ((key2 = dlg_ok_buttoncode(key)) >= 0) {
547 result = key2;
548 break;
549 }
550 beep();
551 }
552 }
553 } else {
554 beep();
555 }
556 }
557
558 dlg_del_window(dialog);
559 dlg_mouse_free_regions();
560 free(prompt);
561 *current_item = (scrollamt + choice);
562 return result;
563 }
564
565 /*
566 * Display a set of items as a tree.
567 */
568 int
569 dialog_treeview(const char *title,
570 const char *cprompt,
571 int height,
572 int width,
573 int list_height,
574 int item_no,
575 char **items,
576 int flag)
577 {
578 int result;
579 int i, j;
580 DIALOG_LISTITEM *listitems;
581 int *depths;
582 bool show_status = FALSE;
583 int current = 0;
584 char *help_result;
585
586 listitems = dlg_calloc(DIALOG_LISTITEM, (size_t) item_no + 1);
587 assert_ptr(listitems, "dialog_treeview");
588
589 depths = dlg_calloc(int, (size_t) item_no + 1);
590 assert_ptr(depths, "dialog_treeview");
591
592 for (i = j = 0; i < item_no; ++i) {
593 listitems[i].name = items[j++];
594 listitems[i].text = (dialog_vars.no_items
595 ? dlg_strempty()
596 : items[j++]);
597 listitems[i].state = !dlg_strcmp(items[j++], "on");
598 depths[i] = atoi(items[j++]);
599 listitems[i].help = ((dialog_vars.item_help)
600 ? items[j++]
601 : dlg_strempty());
602 }
603 dlg_align_columns(&listitems[0].text, (int) sizeof(DIALOG_LISTITEM), item_no);
604
605 result = dlg_treeview(title,
606 cprompt,
607 height,
608 width,
609 list_height,
610 item_no,
611 listitems,
612 NULL,
613 depths,
614 flag,
615 &current);
616
617 switch (result) {
618 case DLG_EXIT_OK: /* FALLTHRU */
619 case DLG_EXIT_EXTRA:
620 show_status = TRUE;
621 break;
622 case DLG_EXIT_HELP:
623 dlg_add_help_listitem(&result, &help_result, &listitems[current]);
624 if ((show_status = dialog_vars.help_status)) {
625 if (dialog_vars.separate_output) {
626 dlg_add_string(help_result);
627 dlg_add_separator();
628 } else {
629 dlg_add_quoted(help_result);
630 }
631 } else {
632 dlg_add_string(help_result);
633 }
634 break;
635 }
636
637 if (show_status) {
638 for (i = 0; i < item_no; i++) {
639 if (listitems[i].state) {
640 if (dialog_vars.separate_output) {
641 dlg_add_string(listitems[i].name);
642 dlg_add_separator();
643 } else {
644 if (dlg_need_separator())
645 dlg_add_separator();
646 if (flag == FLAG_CHECK)
647 dlg_add_quoted(listitems[i].name);
648 else
649 dlg_add_string(listitems[i].name);
650 }
651 }
652 }
653 dlg_add_last_key(-1);
654 }
655
656 dlg_free_columns(&listitems[0].text, (int) sizeof(DIALOG_LISTITEM), item_no);
657 free(depths);
658 free(listitems);
659 return result;
660 }
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