xref: /openbmc/linux/scripts/kconfig/lxdialog/util.c (revision 22246614)
1 /*
2  *  util.c
3  *
4  *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
5  *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
6  *
7  *  This program is free software; you can redistribute it and/or
8  *  modify it under the terms of the GNU General Public License
9  *  as published by the Free Software Foundation; either version 2
10  *  of the License, or (at your option) any later version.
11  *
12  *  This program is distributed in the hope that it will be useful,
13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  *  GNU General Public License for more details.
16  *
17  *  You should have received a copy of the GNU General Public License
18  *  along with this program; if not, write to the Free Software
19  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20  */
21 
22 #include "dialog.h"
23 
24 struct dialog_info dlg;
25 
26 static void set_mono_theme(void)
27 {
28 	dlg.screen.atr = A_NORMAL;
29 	dlg.shadow.atr = A_NORMAL;
30 	dlg.dialog.atr = A_NORMAL;
31 	dlg.title.atr = A_BOLD;
32 	dlg.border.atr = A_NORMAL;
33 	dlg.button_active.atr = A_REVERSE;
34 	dlg.button_inactive.atr = A_DIM;
35 	dlg.button_key_active.atr = A_REVERSE;
36 	dlg.button_key_inactive.atr = A_BOLD;
37 	dlg.button_label_active.atr = A_REVERSE;
38 	dlg.button_label_inactive.atr = A_NORMAL;
39 	dlg.inputbox.atr = A_NORMAL;
40 	dlg.inputbox_border.atr = A_NORMAL;
41 	dlg.searchbox.atr = A_NORMAL;
42 	dlg.searchbox_title.atr = A_BOLD;
43 	dlg.searchbox_border.atr = A_NORMAL;
44 	dlg.position_indicator.atr = A_BOLD;
45 	dlg.menubox.atr = A_NORMAL;
46 	dlg.menubox_border.atr = A_NORMAL;
47 	dlg.item.atr = A_NORMAL;
48 	dlg.item_selected.atr = A_REVERSE;
49 	dlg.tag.atr = A_BOLD;
50 	dlg.tag_selected.atr = A_REVERSE;
51 	dlg.tag_key.atr = A_BOLD;
52 	dlg.tag_key_selected.atr = A_REVERSE;
53 	dlg.check.atr = A_BOLD;
54 	dlg.check_selected.atr = A_REVERSE;
55 	dlg.uarrow.atr = A_BOLD;
56 	dlg.darrow.atr = A_BOLD;
57 }
58 
59 #define DLG_COLOR(dialog, f, b, h) \
60 do {                               \
61 	dlg.dialog.fg = (f);       \
62 	dlg.dialog.bg = (b);       \
63 	dlg.dialog.hl = (h);       \
64 } while (0)
65 
66 static void set_classic_theme(void)
67 {
68 	DLG_COLOR(screen,                COLOR_CYAN,   COLOR_BLUE,   true);
69 	DLG_COLOR(shadow,                COLOR_BLACK,  COLOR_BLACK,  true);
70 	DLG_COLOR(dialog,                COLOR_BLACK,  COLOR_WHITE,  false);
71 	DLG_COLOR(title,                 COLOR_YELLOW, COLOR_WHITE,  true);
72 	DLG_COLOR(border,                COLOR_WHITE,  COLOR_WHITE,  true);
73 	DLG_COLOR(button_active,         COLOR_WHITE,  COLOR_BLUE,   true);
74 	DLG_COLOR(button_inactive,       COLOR_BLACK,  COLOR_WHITE,  false);
75 	DLG_COLOR(button_key_active,     COLOR_WHITE,  COLOR_BLUE,   true);
76 	DLG_COLOR(button_key_inactive,   COLOR_RED,    COLOR_WHITE,  false);
77 	DLG_COLOR(button_label_active,   COLOR_YELLOW, COLOR_BLUE,   true);
78 	DLG_COLOR(button_label_inactive, COLOR_BLACK,  COLOR_WHITE,  true);
79 	DLG_COLOR(inputbox,              COLOR_BLACK,  COLOR_WHITE,  false);
80 	DLG_COLOR(inputbox_border,       COLOR_BLACK,  COLOR_WHITE,  false);
81 	DLG_COLOR(searchbox,             COLOR_BLACK,  COLOR_WHITE,  false);
82 	DLG_COLOR(searchbox_title,       COLOR_YELLOW, COLOR_WHITE,  true);
83 	DLG_COLOR(searchbox_border,      COLOR_WHITE,  COLOR_WHITE,  true);
84 	DLG_COLOR(position_indicator,    COLOR_YELLOW, COLOR_WHITE,  true);
85 	DLG_COLOR(menubox,               COLOR_BLACK,  COLOR_WHITE,  false);
86 	DLG_COLOR(menubox_border,        COLOR_WHITE,  COLOR_WHITE,  true);
87 	DLG_COLOR(item,                  COLOR_BLACK,  COLOR_WHITE,  false);
88 	DLG_COLOR(item_selected,         COLOR_WHITE,  COLOR_BLUE,   true);
89 	DLG_COLOR(tag,                   COLOR_YELLOW, COLOR_WHITE,  true);
90 	DLG_COLOR(tag_selected,          COLOR_YELLOW, COLOR_BLUE,   true);
91 	DLG_COLOR(tag_key,               COLOR_YELLOW, COLOR_WHITE,  true);
92 	DLG_COLOR(tag_key_selected,      COLOR_YELLOW, COLOR_BLUE,   true);
93 	DLG_COLOR(check,                 COLOR_BLACK,  COLOR_WHITE,  false);
94 	DLG_COLOR(check_selected,        COLOR_WHITE,  COLOR_BLUE,   true);
95 	DLG_COLOR(uarrow,                COLOR_GREEN,  COLOR_WHITE,  true);
96 	DLG_COLOR(darrow,                COLOR_GREEN,  COLOR_WHITE,  true);
97 }
98 
99 static void set_blackbg_theme(void)
100 {
101 	DLG_COLOR(screen, COLOR_RED,   COLOR_BLACK, true);
102 	DLG_COLOR(shadow, COLOR_BLACK, COLOR_BLACK, false);
103 	DLG_COLOR(dialog, COLOR_WHITE, COLOR_BLACK, false);
104 	DLG_COLOR(title,  COLOR_RED,   COLOR_BLACK, false);
105 	DLG_COLOR(border, COLOR_BLACK, COLOR_BLACK, true);
106 
107 	DLG_COLOR(button_active,         COLOR_YELLOW, COLOR_RED,   false);
108 	DLG_COLOR(button_inactive,       COLOR_YELLOW, COLOR_BLACK, false);
109 	DLG_COLOR(button_key_active,     COLOR_YELLOW, COLOR_RED,   true);
110 	DLG_COLOR(button_key_inactive,   COLOR_RED,    COLOR_BLACK, false);
111 	DLG_COLOR(button_label_active,   COLOR_WHITE,  COLOR_RED,   false);
112 	DLG_COLOR(button_label_inactive, COLOR_BLACK,  COLOR_BLACK, true);
113 
114 	DLG_COLOR(inputbox,         COLOR_YELLOW, COLOR_BLACK, false);
115 	DLG_COLOR(inputbox_border,  COLOR_YELLOW, COLOR_BLACK, false);
116 
117 	DLG_COLOR(searchbox,        COLOR_YELLOW, COLOR_BLACK, false);
118 	DLG_COLOR(searchbox_title,  COLOR_YELLOW, COLOR_BLACK, true);
119 	DLG_COLOR(searchbox_border, COLOR_BLACK,  COLOR_BLACK, true);
120 
121 	DLG_COLOR(position_indicator, COLOR_RED, COLOR_BLACK,  false);
122 
123 	DLG_COLOR(menubox,          COLOR_YELLOW, COLOR_BLACK, false);
124 	DLG_COLOR(menubox_border,   COLOR_BLACK,  COLOR_BLACK, true);
125 
126 	DLG_COLOR(item,             COLOR_WHITE, COLOR_BLACK, false);
127 	DLG_COLOR(item_selected,    COLOR_WHITE, COLOR_RED,   false);
128 
129 	DLG_COLOR(tag,              COLOR_RED,    COLOR_BLACK, false);
130 	DLG_COLOR(tag_selected,     COLOR_YELLOW, COLOR_RED,   true);
131 	DLG_COLOR(tag_key,          COLOR_RED,    COLOR_BLACK, false);
132 	DLG_COLOR(tag_key_selected, COLOR_YELLOW, COLOR_RED,   true);
133 
134 	DLG_COLOR(check,            COLOR_YELLOW, COLOR_BLACK, false);
135 	DLG_COLOR(check_selected,   COLOR_YELLOW, COLOR_RED,   true);
136 
137 	DLG_COLOR(uarrow, COLOR_RED, COLOR_BLACK, false);
138 	DLG_COLOR(darrow, COLOR_RED, COLOR_BLACK, false);
139 }
140 
141 static void set_bluetitle_theme(void)
142 {
143 	set_classic_theme();
144 	DLG_COLOR(title,               COLOR_BLUE,   COLOR_WHITE, true);
145 	DLG_COLOR(button_key_active,   COLOR_YELLOW, COLOR_BLUE,  true);
146 	DLG_COLOR(button_label_active, COLOR_WHITE,  COLOR_BLUE,  true);
147 	DLG_COLOR(searchbox_title,     COLOR_BLUE,   COLOR_WHITE, true);
148 	DLG_COLOR(position_indicator,  COLOR_BLUE,   COLOR_WHITE, true);
149 	DLG_COLOR(tag,                 COLOR_BLUE,   COLOR_WHITE, true);
150 	DLG_COLOR(tag_key,             COLOR_BLUE,   COLOR_WHITE, true);
151 
152 }
153 
154 /*
155  * Select color theme
156  */
157 static int set_theme(const char *theme)
158 {
159 	int use_color = 1;
160 	if (!theme)
161 		set_bluetitle_theme();
162 	else if (strcmp(theme, "classic") == 0)
163 		set_classic_theme();
164 	else if (strcmp(theme, "bluetitle") == 0)
165 		set_bluetitle_theme();
166 	else if (strcmp(theme, "blackbg") == 0)
167 		set_blackbg_theme();
168 	else if (strcmp(theme, "mono") == 0)
169 		use_color = 0;
170 
171 	return use_color;
172 }
173 
174 static void init_one_color(struct dialog_color *color)
175 {
176 	static int pair = 0;
177 
178 	pair++;
179 	init_pair(pair, color->fg, color->bg);
180 	if (color->hl)
181 		color->atr = A_BOLD | COLOR_PAIR(pair);
182 	else
183 		color->atr = COLOR_PAIR(pair);
184 }
185 
186 static void init_dialog_colors(void)
187 {
188 	init_one_color(&dlg.screen);
189 	init_one_color(&dlg.shadow);
190 	init_one_color(&dlg.dialog);
191 	init_one_color(&dlg.title);
192 	init_one_color(&dlg.border);
193 	init_one_color(&dlg.button_active);
194 	init_one_color(&dlg.button_inactive);
195 	init_one_color(&dlg.button_key_active);
196 	init_one_color(&dlg.button_key_inactive);
197 	init_one_color(&dlg.button_label_active);
198 	init_one_color(&dlg.button_label_inactive);
199 	init_one_color(&dlg.inputbox);
200 	init_one_color(&dlg.inputbox_border);
201 	init_one_color(&dlg.searchbox);
202 	init_one_color(&dlg.searchbox_title);
203 	init_one_color(&dlg.searchbox_border);
204 	init_one_color(&dlg.position_indicator);
205 	init_one_color(&dlg.menubox);
206 	init_one_color(&dlg.menubox_border);
207 	init_one_color(&dlg.item);
208 	init_one_color(&dlg.item_selected);
209 	init_one_color(&dlg.tag);
210 	init_one_color(&dlg.tag_selected);
211 	init_one_color(&dlg.tag_key);
212 	init_one_color(&dlg.tag_key_selected);
213 	init_one_color(&dlg.check);
214 	init_one_color(&dlg.check_selected);
215 	init_one_color(&dlg.uarrow);
216 	init_one_color(&dlg.darrow);
217 }
218 
219 /*
220  * Setup for color display
221  */
222 static void color_setup(const char *theme)
223 {
224 	int use_color;
225 
226 	use_color = set_theme(theme);
227 	if (use_color && has_colors()) {
228 		start_color();
229 		init_dialog_colors();
230 	} else
231 		set_mono_theme();
232 }
233 
234 /*
235  * Set window to attribute 'attr'
236  */
237 void attr_clear(WINDOW * win, int height, int width, chtype attr)
238 {
239 	int i, j;
240 
241 	wattrset(win, attr);
242 	for (i = 0; i < height; i++) {
243 		wmove(win, i, 0);
244 		for (j = 0; j < width; j++)
245 			waddch(win, ' ');
246 	}
247 	touchwin(win);
248 }
249 
250 void dialog_clear(void)
251 {
252 	attr_clear(stdscr, LINES, COLS, dlg.screen.atr);
253 	/* Display background title if it exists ... - SLH */
254 	if (dlg.backtitle != NULL) {
255 		int i;
256 
257 		wattrset(stdscr, dlg.screen.atr);
258 		mvwaddstr(stdscr, 0, 1, (char *)dlg.backtitle);
259 		wmove(stdscr, 1, 1);
260 		for (i = 1; i < COLS - 1; i++)
261 			waddch(stdscr, ACS_HLINE);
262 	}
263 	wnoutrefresh(stdscr);
264 }
265 
266 /*
267  * Do some initialization for dialog
268  */
269 int init_dialog(const char *backtitle)
270 {
271 	int height, width;
272 
273 	initscr();		/* Init curses */
274 	getmaxyx(stdscr, height, width);
275 	if (height < 19 || width < 80) {
276 		endwin();
277 		return -ERRDISPLAYTOOSMALL;
278 	}
279 
280 	dlg.backtitle = backtitle;
281 	color_setup(getenv("MENUCONFIG_COLOR"));
282 
283 	keypad(stdscr, TRUE);
284 	cbreak();
285 	noecho();
286 	dialog_clear();
287 
288 	return 0;
289 }
290 
291 void set_dialog_backtitle(const char *backtitle)
292 {
293 	dlg.backtitle = backtitle;
294 }
295 
296 /*
297  * End using dialog functions.
298  */
299 void end_dialog(int x, int y)
300 {
301 	/* move cursor back to original position */
302 	move(y, x);
303 	refresh();
304 	endwin();
305 }
306 
307 /* Print the title of the dialog. Center the title and truncate
308  * tile if wider than dialog (- 2 chars).
309  **/
310 void print_title(WINDOW *dialog, const char *title, int width)
311 {
312 	if (title) {
313 		int tlen = MIN(width - 2, strlen(title));
314 		wattrset(dialog, dlg.title.atr);
315 		mvwaddch(dialog, 0, (width - tlen) / 2 - 1, ' ');
316 		mvwaddnstr(dialog, 0, (width - tlen)/2, title, tlen);
317 		waddch(dialog, ' ');
318 	}
319 }
320 
321 /*
322  * Print a string of text in a window, automatically wrap around to the
323  * next line if the string is too long to fit on one line. Newline
324  * characters '\n' are replaced by spaces.  We start on a new line
325  * if there is no room for at least 4 nonblanks following a double-space.
326  */
327 void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x)
328 {
329 	int newl, cur_x, cur_y;
330 	int i, prompt_len, room, wlen;
331 	char tempstr[MAX_LEN + 1], *word, *sp, *sp2;
332 
333 	strcpy(tempstr, prompt);
334 
335 	prompt_len = strlen(tempstr);
336 
337 	/*
338 	 * Remove newlines
339 	 */
340 	for (i = 0; i < prompt_len; i++) {
341 		if (tempstr[i] == '\n')
342 			tempstr[i] = ' ';
343 	}
344 
345 	if (prompt_len <= width - x * 2) {	/* If prompt is short */
346 		wmove(win, y, (width - prompt_len) / 2);
347 		waddstr(win, tempstr);
348 	} else {
349 		cur_x = x;
350 		cur_y = y;
351 		newl = 1;
352 		word = tempstr;
353 		while (word && *word) {
354 			sp = strchr(word, ' ');
355 			if (sp)
356 				*sp++ = 0;
357 
358 			/* Wrap to next line if either the word does not fit,
359 			   or it is the first word of a new sentence, and it is
360 			   short, and the next word does not fit. */
361 			room = width - cur_x;
362 			wlen = strlen(word);
363 			if (wlen > room ||
364 			    (newl && wlen < 4 && sp
365 			     && wlen + 1 + strlen(sp) > room
366 			     && (!(sp2 = strchr(sp, ' '))
367 				 || wlen + 1 + (sp2 - sp) > room))) {
368 				cur_y++;
369 				cur_x = x;
370 			}
371 			wmove(win, cur_y, cur_x);
372 			waddstr(win, word);
373 			getyx(win, cur_y, cur_x);
374 			cur_x++;
375 			if (sp && *sp == ' ') {
376 				cur_x++;	/* double space */
377 				while (*++sp == ' ') ;
378 				newl = 1;
379 			} else
380 				newl = 0;
381 			word = sp;
382 		}
383 	}
384 }
385 
386 /*
387  * Print a button
388  */
389 void print_button(WINDOW * win, const char *label, int y, int x, int selected)
390 {
391 	int i, temp;
392 
393 	wmove(win, y, x);
394 	wattrset(win, selected ? dlg.button_active.atr
395 		 : dlg.button_inactive.atr);
396 	waddstr(win, "<");
397 	temp = strspn(label, " ");
398 	label += temp;
399 	wattrset(win, selected ? dlg.button_label_active.atr
400 		 : dlg.button_label_inactive.atr);
401 	for (i = 0; i < temp; i++)
402 		waddch(win, ' ');
403 	wattrset(win, selected ? dlg.button_key_active.atr
404 		 : dlg.button_key_inactive.atr);
405 	waddch(win, label[0]);
406 	wattrset(win, selected ? dlg.button_label_active.atr
407 		 : dlg.button_label_inactive.atr);
408 	waddstr(win, (char *)label + 1);
409 	wattrset(win, selected ? dlg.button_active.atr
410 		 : dlg.button_inactive.atr);
411 	waddstr(win, ">");
412 	wmove(win, y, x + temp + 1);
413 }
414 
415 /*
416  * Draw a rectangular box with line drawing characters
417  */
418 void
419 draw_box(WINDOW * win, int y, int x, int height, int width,
420 	 chtype box, chtype border)
421 {
422 	int i, j;
423 
424 	wattrset(win, 0);
425 	for (i = 0; i < height; i++) {
426 		wmove(win, y + i, x);
427 		for (j = 0; j < width; j++)
428 			if (!i && !j)
429 				waddch(win, border | ACS_ULCORNER);
430 			else if (i == height - 1 && !j)
431 				waddch(win, border | ACS_LLCORNER);
432 			else if (!i && j == width - 1)
433 				waddch(win, box | ACS_URCORNER);
434 			else if (i == height - 1 && j == width - 1)
435 				waddch(win, box | ACS_LRCORNER);
436 			else if (!i)
437 				waddch(win, border | ACS_HLINE);
438 			else if (i == height - 1)
439 				waddch(win, box | ACS_HLINE);
440 			else if (!j)
441 				waddch(win, border | ACS_VLINE);
442 			else if (j == width - 1)
443 				waddch(win, box | ACS_VLINE);
444 			else
445 				waddch(win, box | ' ');
446 	}
447 }
448 
449 /*
450  * Draw shadows along the right and bottom edge to give a more 3D look
451  * to the boxes
452  */
453 void draw_shadow(WINDOW * win, int y, int x, int height, int width)
454 {
455 	int i;
456 
457 	if (has_colors()) {	/* Whether terminal supports color? */
458 		wattrset(win, dlg.shadow.atr);
459 		wmove(win, y + height, x + 2);
460 		for (i = 0; i < width; i++)
461 			waddch(win, winch(win) & A_CHARTEXT);
462 		for (i = y + 1; i < y + height + 1; i++) {
463 			wmove(win, i, x + width);
464 			waddch(win, winch(win) & A_CHARTEXT);
465 			waddch(win, winch(win) & A_CHARTEXT);
466 		}
467 		wnoutrefresh(win);
468 	}
469 }
470 
471 /*
472  *  Return the position of the first alphabetic character in a string.
473  */
474 int first_alpha(const char *string, const char *exempt)
475 {
476 	int i, in_paren = 0, c;
477 
478 	for (i = 0; i < strlen(string); i++) {
479 		c = tolower(string[i]);
480 
481 		if (strchr("<[(", c))
482 			++in_paren;
483 		if (strchr(">])", c) && in_paren > 0)
484 			--in_paren;
485 
486 		if ((!in_paren) && isalpha(c) && strchr(exempt, c) == 0)
487 			return i;
488 	}
489 
490 	return 0;
491 }
492 
493 /*
494  * ncurses uses ESC to detect escaped char sequences. This resutl in
495  * a small timeout before ESC is actually delivered to the application.
496  * lxdialog suggest <ESC> <ESC> which is correctly translated to two
497  * times esc. But then we need to ignore the second esc to avoid stepping
498  * out one menu too much. Filter away all escaped key sequences since
499  * keypad(FALSE) turn off ncurses support for escape sequences - and thats
500  * needed to make notimeout() do as expected.
501  */
502 int on_key_esc(WINDOW *win)
503 {
504 	int key;
505 	int key2;
506 	int key3;
507 
508 	nodelay(win, TRUE);
509 	keypad(win, FALSE);
510 	key = wgetch(win);
511 	key2 = wgetch(win);
512 	do {
513 		key3 = wgetch(win);
514 	} while (key3 != ERR);
515 	nodelay(win, FALSE);
516 	keypad(win, TRUE);
517 	if (key == KEY_ESC && key2 == ERR)
518 		return KEY_ESC;
519 	else if (key != ERR && key != KEY_ESC && key2 == ERR)
520 		ungetch(key);
521 
522 	return -1;
523 }
524 
525 /* redraw screen in new size */
526 int on_key_resize(void)
527 {
528 	dialog_clear();
529 	return KEY_RESIZE;
530 }
531 
532 struct dialog_list *item_cur;
533 struct dialog_list item_nil;
534 struct dialog_list *item_head;
535 
536 void item_reset(void)
537 {
538 	struct dialog_list *p, *next;
539 
540 	for (p = item_head; p; p = next) {
541 		next = p->next;
542 		free(p);
543 	}
544 	item_head = NULL;
545 	item_cur = &item_nil;
546 }
547 
548 void item_make(const char *fmt, ...)
549 {
550 	va_list ap;
551 	struct dialog_list *p = malloc(sizeof(*p));
552 
553 	if (item_head)
554 		item_cur->next = p;
555 	else
556 		item_head = p;
557 	item_cur = p;
558 	memset(p, 0, sizeof(*p));
559 
560 	va_start(ap, fmt);
561 	vsnprintf(item_cur->node.str, sizeof(item_cur->node.str), fmt, ap);
562 	va_end(ap);
563 }
564 
565 void item_add_str(const char *fmt, ...)
566 {
567 	va_list ap;
568         size_t avail;
569 
570 	avail = sizeof(item_cur->node.str) - strlen(item_cur->node.str);
571 
572 	va_start(ap, fmt);
573 	vsnprintf(item_cur->node.str + strlen(item_cur->node.str),
574 		  avail, fmt, ap);
575 	item_cur->node.str[sizeof(item_cur->node.str) - 1] = '\0';
576 	va_end(ap);
577 }
578 
579 void item_set_tag(char tag)
580 {
581 	item_cur->node.tag = tag;
582 }
583 void item_set_data(void *ptr)
584 {
585 	item_cur->node.data = ptr;
586 }
587 
588 void item_set_selected(int val)
589 {
590 	item_cur->node.selected = val;
591 }
592 
593 int item_activate_selected(void)
594 {
595 	item_foreach()
596 		if (item_is_selected())
597 			return 1;
598 	return 0;
599 }
600 
601 void *item_data(void)
602 {
603 	return item_cur->node.data;
604 }
605 
606 char item_tag(void)
607 {
608 	return item_cur->node.tag;
609 }
610 
611 int item_count(void)
612 {
613 	int n = 0;
614 	struct dialog_list *p;
615 
616 	for (p = item_head; p; p = p->next)
617 		n++;
618 	return n;
619 }
620 
621 void item_set(int n)
622 {
623 	int i = 0;
624 	item_foreach()
625 		if (i++ == n)
626 			return;
627 }
628 
629 int item_n(void)
630 {
631 	int n = 0;
632 	struct dialog_list *p;
633 
634 	for (p = item_head; p; p = p->next) {
635 		if (p == item_cur)
636 			return n;
637 		n++;
638 	}
639 	return 0;
640 }
641 
642 const char *item_str(void)
643 {
644 	return item_cur->node.str;
645 }
646 
647 int item_is_selected(void)
648 {
649 	return (item_cur->node.selected != 0);
650 }
651 
652 int item_is_tag(char tag)
653 {
654 	return (item_cur->node.tag == tag);
655 }
656