/* bfu.c
 * (c) 2002 Mikulas Patocka
 * This file is a part of the Links program, released under GPL.
 */

#include "links.h"

static void menu_func(struct window *, struct links_event *, int);
static void mainmenu_func(struct window *, struct links_event *, int);

struct memory_list *getml(void *p, ...)
{
	struct memory_list *ml;
	va_list ap;
	int n = 0;
	void *q = p;
	va_start(ap, p);
	while (q) {
		if (n == MAXINT) overalloc();
		n++, q = va_arg(ap, void *);
	}
	if ((unsigned)n > (MAXINT - sizeof(struct memory_list)) / sizeof(void *)) overalloc();
	ml = mem_alloc(sizeof(struct memory_list) + n * sizeof(void *));
	ml->n = n;
	n = 0;
	q = p;
	va_end(ap);
	va_start(ap, p);
	while (q) ml->p[n++] = q, q = va_arg(ap, void *);
	va_end(ap);
	return ml;
}

void add_to_ml(struct memory_list **ml, ...)
{
	struct memory_list *nml;
	va_list ap;
	int n = 0;
	void *q;
	if (!*ml) {
		*ml = mem_alloc(sizeof(struct memory_list));
		(*ml)->n = 0;
	}
	va_start(ap, ml);
	while ((q = va_arg(ap, void *))) {
		if (n == MAXINT) overalloc();
		n++;
	}
	if ((unsigned)n + (unsigned)((*ml)->n) > (MAXINT - sizeof(struct memory_list)) / sizeof(void *)) overalloc();
	nml = mem_realloc(*ml, sizeof(struct memory_list) + (n + (*ml)->n) * sizeof(void *));
	va_end(ap);
	va_start(ap, ml);
	while ((q = va_arg(ap, void *))) nml->p[nml->n++] = q;
	*ml = nml;
	va_end(ap);
}

void freeml(struct memory_list *ml)
{
	int i;
	if (!ml) return;
	for (i = 0; i < ml->n; i++) mem_free(ml->p[i]);
	mem_free(ml);
}

static inline int is_utf_8(struct terminal *term)
{
#ifdef G
	if (F) return 1;
#endif
#ifdef ENABLE_UTF8
	if (term_charset(term) == utf8_table) return 1;
#endif
	return 0;
}

static inline int ttxtlen(struct terminal *term, unsigned char *s)
{
#ifdef ENABLE_UTF8
	if (term_charset(term) == utf8_table)
		return strlen_utf8(s);
#endif
	return (int)strlen(cast_const_char s);
}

static inline int txtlen(struct terminal *term, unsigned char *s)
{
#ifdef G
	if (F)
		return g_text_width(bfu_style_wb, s);
	else
#endif
		return ttxtlen(term, s);
}

#ifdef G
struct style *bfu_style_wb, *bfu_style_wb_b, *bfu_style_bw, *bfu_style_bw_u;
struct style *bfu_style_bw_mono;
struct style *bfu_style_wb_mono, *bfu_style_wb_mono_u;

long bfu_fg_color, bfu_bg_color;

void init_bfu(void)
{
	if (!F) return;
	bfu_bg_color = dip_get_color_sRGB(G_BFU_BG_COLOR);
	bfu_fg_color = dip_get_color_sRGB(G_BFU_FG_COLOR);
	bfu_style_wb = g_get_style(G_BFU_BG_COLOR, G_BFU_FG_COLOR, G_BFU_FONT_SIZE, 0);
	bfu_style_wb_b = g_get_style(G_BFU_BG_COLOR, G_BFU_FG_COLOR, G_BFU_FONT_SIZE, 0);
	bfu_style_bw = g_get_style(G_BFU_FG_COLOR, G_BFU_BG_COLOR, G_BFU_FONT_SIZE, 0);
	bfu_style_bw_u = g_get_style(G_BFU_FG_COLOR, G_BFU_BG_COLOR, G_BFU_FONT_SIZE, FF_UNDERLINE);
	bfu_style_bw_mono = g_get_style(G_BFU_FG_COLOR, G_BFU_BG_COLOR, G_BFU_FONT_SIZE, FF_MONOSPACED);
	bfu_style_wb_mono = g_get_style(G_BFU_BG_COLOR, G_BFU_FG_COLOR, G_BFU_FONT_SIZE, FF_MONOSPACED);
	bfu_style_wb_mono_u = g_get_style(G_BFU_BG_COLOR, G_BFU_FG_COLOR, G_BFU_FONT_SIZE, FF_UNDERLINE | FF_MONOSPACED);
}

#define G_DIALOG_FIELD_WIDTH g_char_width(bfu_style_wb_mono, ' ')

void shutdown_bfu(void)
{
	if (!F) return;
	g_free_style(bfu_style_wb);
	g_free_style(bfu_style_wb_b);
	g_free_style(bfu_style_bw);
	g_free_style(bfu_style_bw_u);
	g_free_style(bfu_style_bw_mono);
	g_free_style(bfu_style_wb_mono);
	g_free_style(bfu_style_wb_mono_u);
}

#else

void init_bfu(void) {}
void shutdown_bfu(void) {}

#endif

unsigned char m_bar = 0;

static unsigned select_hotkey(struct terminal *term, unsigned char *text, unsigned char *hotkey, unsigned *hotkeys, int n)
{
	unsigned c;
	if (hotkey == M_BAR) return 0;
	if (text) {
		text = stracpy(get_text_translation(text, term));
		charset_upcase_string(&text, term_charset(term));
	}
	hotkey = get_text_translation(hotkey, term);
	while (1) {
		int i;
		c = GET_TERM_CHAR(term, &hotkey);
		if (!c) break;
		c = charset_upcase(c, term_charset(term));
		for (i = 0; i < n; i++) if (hotkeys[i] == c) goto cont;
		if (!text || cp_strchr(term_charset(term), text, c)) break;
		cont:;
	}
	if (text) mem_free(text);
	return c;
}

void do_menu_selected(struct terminal *term, struct menu_item *items, void *data, int selected, void (*free_function)(void *), void *free_data)
{
	int i;
	struct menu *menu;
	for (i = 0; items[i].text; i++) if (i == (MAXINT - sizeof(struct menu)) / sizeof(unsigned)) overalloc();
	menu = mem_alloc(sizeof(struct menu) + (!i ? 0 : i - 1) * sizeof(unsigned));
	menu->selected = selected;
	menu->view = 0;
	menu->ni = i;
	menu->items = items;
	menu->data = data;
	menu->free_function = free_function;
	menu->free_data = free_data;
	for (i = 0; i < menu->ni; i++)
		menu->hotkeys[i] = select_hotkey(term, !term->spec->braille ? items[i].text : NULL, items[i].hotkey, menu->hotkeys, i);
#ifdef G
	if (F) {
		if ((unsigned)menu->ni > MAXINT / sizeof(unsigned char *)) overalloc();
		menu->hktxt1 = mem_calloc(menu->ni * sizeof(unsigned char *));
		menu->hktxt2 = mem_calloc(menu->ni * sizeof(unsigned char *));
		menu->hktxt3 = mem_calloc(menu->ni * sizeof(unsigned char *));
		for (i = 0; i < menu->ni; i++) {
			unsigned char *txt = get_text_translation(items[i].text, term);
			unsigned char *txt2, *txt3 = txt;
			if (items[i].hotkey != M_BAR) while (*txt3) {
				unsigned u;
				txt2 = txt3;
				GET_UTF_8(txt3, u);
				u = uni_upcase(u);
				if (u == menu->hotkeys[i]) {
					menu->hktxt1[i] = memacpy(txt, txt2 - txt);
					menu->hktxt2[i] = memacpy(txt2, txt3 - txt2);
					menu->hktxt3[i] = stracpy(txt3);
					goto x;
				}
			}
			menu->hktxt1[i] = stracpy(txt);
			menu->hktxt2[i] = stracpy(cast_uchar "");
			menu->hktxt3[i] = stracpy(cast_uchar "");
			x:;
		}
	}
#endif
	add_window(term, menu_func, menu);
}

void do_menu(struct terminal *term, struct menu_item *items, void *data)
{
	do_menu_selected(term, items, data, 0, NULL, NULL);
}

static void select_menu(struct terminal *term, struct menu *menu)
{
	struct menu_item *it;
	void (*func)(struct terminal *, void *, void *);
	void *data1;
	void *data2;
	if (menu->selected < 0 || menu->selected >= menu->ni) return;
	it = &menu->items[menu->selected];
	func = it->func;
	data1 = it->data;
	data2 = menu->data;
	if (it->hotkey == M_BAR) return;
	flush_terminal(term);
	if (!it->in_m) {
		struct window *win;
		struct list_head *lwin;
		foreach(struct window, win, lwin, term->windows) {
			if (win->handler != menu_func && win->handler != mainmenu_func)
				break;
			lwin = lwin->prev;
			delete_window(win);
		}
	}
	func(term, data1, data2);
}

static unsigned char *get_rtext(unsigned char *rtext)
{
	if (!strcmp(cast_const_char rtext, ">")) return MENU_SUBMENU;
	return rtext;
}

static void count_menu_size(struct terminal *term, struct menu *menu)
{
	int sx = term->x;
	int sy = term->y;
	int mx = gf_val(4, 2 * (G_MENU_LEFT_BORDER + G_MENU_LEFT_INNER_BORDER));
	int my;
	for (my = 0; my < menu->ni; my++) {
		int s;
#ifdef G
		if (menu->items[my].free_i & MENU_FONT_LIST)  {
			struct style *st = g_get_style_font(G_BFU_BG_COLOR, G_BFU_FG_COLOR, G_BFU_FONT_SIZE,
				(menu->items[my].free_i & MENU_FONT_LIST_BOLD ? FF_BOLD : 0) |
				(menu->items[my].free_i & MENU_FONT_LIST_MONO ? FF_MONOSPACED : 0),
				menu->items[my].data);
			s = g_text_width(st, menu->items[my].text);
			g_free_style(st);
		} else
#endif
			s = txtlen(term, get_text_translation(menu->items[my].text, term)) + txtlen(term, get_text_translation(get_rtext(menu->items[my].rtext), term)) + gf_val(MENU_HOTKEY_SPACE, G_MENU_HOTKEY_SPACE) * (get_text_translation(get_rtext(menu->items[my].rtext), term)[0] != 0);
		s += gf_val(4, 2 * (G_MENU_LEFT_BORDER + G_MENU_LEFT_INNER_BORDER));
		if (s > mx) mx = s;
	}
	my = gf_val(my, my * G_BFU_FONT_SIZE);
	my += gf_val(2, 2 * G_MENU_TOP_BORDER);
	if (mx > sx) mx = sx;
	if (my > sy) my = sy;
#ifdef G
	if (F) {
		my -= 2 * G_MENU_TOP_BORDER;
		my -= my % G_BFU_FONT_SIZE;
		my += 2 * G_MENU_TOP_BORDER;
	}
#endif
	menu->nview = gf_val(my - 2, (my - 2 * G_MENU_TOP_BORDER) / G_BFU_FONT_SIZE);
	menu->xw = mx;
	menu->yw = my;
	if ((menu->x = menu->xp) < 0) menu->x = 0;
	if ((menu->y = menu->yp) < 0) menu->y = 0;
	if (menu->x + mx > sx) menu->x = sx - mx;
	if (menu->y + my > sy) menu->y = sy - my;
	if (term->spec->braille) {
		menu->x = -1;
		menu->y = -1;
		menu->xw = term->x + 2;
		menu->yw = term->y + 2;
		menu->nview = term->y;
	}
#ifdef G
	if (F) set_window_pos(menu->win, menu->x, menu->y, menu->x + menu->xw, menu->y + menu->yw);
#endif
}

static void scroll_menu(struct menu *menu, int d)
{
	int c = 0;
	int w = menu->nview;
	int scr_i = SCROLL_ITEMS > (w-1)/2 ? (w-1)/2 : SCROLL_ITEMS;
	if (scr_i < 0) scr_i = 0;
	if (w < 0) w = 0;
	menu->selected += d;
	while (1) {
		if (c++ > menu->ni) {
			menu->selected = -1;
			menu->view = 0;
			return;
		}
		if (menu->selected < 0) menu->selected = 0;
		if (menu->selected >= menu->ni) menu->selected = menu->ni - 1;
		if (menu->ni && menu->items[menu->selected].hotkey != M_BAR) break;
		menu->selected += d;
	}
	if (menu->selected < menu->view + scr_i) menu->view = menu->selected - scr_i;
	if (menu->selected >= menu->view + w - scr_i - 1) menu->view = menu->selected - w + scr_i + 1;
	if (menu->view > menu->ni - w) menu->view = menu->ni - w;
	if (menu->view < 0) menu->view = 0;
}

static void display_menu_txt(struct terminal *term, void *menu_)
{
	struct menu *menu = (struct menu *)menu_;
	int p, s;
	int setc = 0;
	fill_area(term, menu->x+1, menu->y+1, menu->xw-2, menu->yw-2, ' ', COLOR_MENU_TEXT);
	draw_frame(term, menu->x, menu->y, menu->xw, menu->yw, COLOR_MENU_FRAME, 1);
	set_window_ptr(menu->win, menu->x, menu->y);
	for (p = menu->view, s = menu->y + 1; p < menu->ni && p < menu->view + menu->yw - 2; p++, s++) {
		int x;
		int h = 0;
		unsigned c;
		unsigned char *tmptext = get_text_translation(menu->items[p].text, term);
		unsigned char co = p == menu->selected ? h = 1, COLOR_MENU_SELECTED : COLOR_MENU_TEXT;
		if (h) {
			setc = 1;
			set_cursor(term, menu->x + 1 + !!term->spec->braille, s, term->x - 1, term->y - 1);
			/*set_window_ptr(menu->win, menu->x+3, s+1);*/
			set_window_ptr(menu->win, menu->x+menu->xw, s);
			fill_area(term, menu->x+1, s, menu->xw-2, 1, ' ', co);
		}
		if (term->spec->braille) h = 1;
		if (menu->items[p].hotkey != M_BAR || (tmptext[0])) {
			unsigned char *rt = get_text_translation(get_rtext(menu->items[p].rtext), term);
			int l = ttxtlen(term, rt);
			for (x = 0;; x++) {
				c = GET_TERM_CHAR(term, &rt);
				if (!c) break;
				if (!term->spec->braille) {
					if (menu->xw - 4 >= l - x)
						set_char(term, menu->x + menu->xw - 2 - l + x, s, c, co);
				} else {
					set_char(term, menu->x + ttxtlen(term, tmptext) + 4 + x + 2, s, c, COLOR_MENU_HOTKEY);
				}
			}
			for (x = 0; x < menu->xw - 4; x++) {
				c = GET_TERM_CHAR(term, &tmptext);
				if (!c) break;
				set_char(term, menu->x + x + 2 + 2 * !!term->spec->braille, s, c, !h && charset_upcase(c, term_charset(term)) == menu->hotkeys[p] ? h = 1, COLOR_MENU_HOTKEY : co);
			}
			if (term->spec->braille && menu->hotkeys[p]) {
				set_char(term, menu->x + 2, s, menu->hotkeys[p], COLOR_MENU_HOTKEY);
			}
		} else {
			set_char(term, menu->x, s, 0xc3, COLOR_MENU_FRAME | ATTR_FRAME);
			fill_area(term, menu->x+1, s, menu->xw-2, 1, 0xc4, COLOR_MENU_FRAME | ATTR_FRAME);
			set_char(term, menu->x+menu->xw-1, s, 0xb4, COLOR_MENU_FRAME | ATTR_FRAME);
		}
	}
	if (!setc && term->spec->braille) {
		set_cursor(term, menu->x + 1, menu->y + 1, term->x - 1, term->y - 1);
	}
}

static int menu_oldview = -1;
static int menu_oldsel = -1;

#ifdef G

static int menu_ptr_set;

static void display_menu_item_gfx(struct terminal *term, struct menu *menu, int it)
{
	struct menu_item *item = &menu->items[it];
	struct graphics_device *dev = term->dev;
	int y;
	if (it < menu->view || it >= menu->ni || it >= menu->view + menu->nview) return;
	y = menu->y + G_MENU_TOP_BORDER + (it - menu->view) * G_BFU_FONT_SIZE;
	if (item->hotkey == M_BAR && !get_text_translation(item->text, term)[0]) {
		drv->fill_area(dev, menu->x + (G_MENU_LEFT_BORDER - 1) / 2 + 1, y, menu->x + menu->xw - (G_MENU_LEFT_BORDER + 1) / 2, y + (G_BFU_FONT_SIZE - 1) / 2, bfu_bg_color);
		drv->draw_hline(dev, menu->x + (G_MENU_LEFT_BORDER - 1) / 2 + 1, y + (G_BFU_FONT_SIZE - 1) / 2, menu->x + menu->xw - G_MENU_LEFT_BORDER / 2, bfu_fg_color);
		drv->fill_area(dev, menu->x + (G_MENU_LEFT_BORDER - 1) / 2 + 1, y + (G_BFU_FONT_SIZE - 1) / 2 + 1, menu->x + menu->xw - (G_MENU_LEFT_BORDER + 1) / 2, y + G_BFU_FONT_SIZE, bfu_bg_color);
	} else {
		int p;
		struct rect r;
		unsigned char *rtext = get_text_translation(get_rtext(item->rtext), term);
		if (it != menu->selected) {
			drv->fill_area(dev, menu->x + (G_MENU_LEFT_BORDER - 1) / 2 + 1, y, menu->x + G_MENU_LEFT_BORDER + G_MENU_LEFT_INNER_BORDER, y + G_BFU_FONT_SIZE, bfu_bg_color);
		} else {
			menu->xl1 = menu->x;
			menu->yl1 = y;
			menu->xl2 = menu->x + menu->xw;
			menu->yl2 = y + G_BFU_FONT_SIZE;
			menu_ptr_set = 1;
			set_window_ptr(menu->win, menu->x + menu->xw, y);
			drv->fill_area(dev, menu->x + (G_MENU_LEFT_BORDER - 1) / 2 + 1, y, menu->x + G_MENU_LEFT_BORDER, y + G_BFU_FONT_SIZE, bfu_bg_color);
			drv->fill_area(dev, menu->x + menu->xw - G_MENU_LEFT_BORDER, y, menu->x + menu->xw - (G_MENU_LEFT_BORDER + 1) / 2, y + G_BFU_FONT_SIZE, bfu_bg_color);
			drv->fill_area(dev, menu->x + G_MENU_LEFT_BORDER, y, menu->x + G_MENU_LEFT_BORDER + G_MENU_LEFT_INNER_BORDER, y + G_BFU_FONT_SIZE, bfu_fg_color);
		}
		restrict_clip_area(dev, &r, menu->x + G_MENU_LEFT_BORDER + G_MENU_LEFT_INNER_BORDER, y, menu->x + menu->xw - G_MENU_LEFT_BORDER - G_MENU_LEFT_INNER_BORDER, y + G_BFU_FONT_SIZE);
		if (it == menu->selected) {
			struct style *style_wb;
			if (menu->items[it].free_i & MENU_FONT_LIST) {
				style_wb = g_get_style_font(G_BFU_BG_COLOR, G_BFU_FG_COLOR, G_BFU_FONT_SIZE,
					(menu->items[it].free_i & MENU_FONT_LIST_BOLD ? FF_BOLD : 0) |
					(menu->items[it].free_i & MENU_FONT_LIST_MONO ? FF_MONOSPACED : 0),
					menu->items[it].data);
			} else {
				style_wb = bfu_style_wb;
			}
			p = menu->x + G_MENU_LEFT_BORDER + G_MENU_LEFT_INNER_BORDER;
			g_print_text(dev, p, y, style_wb, menu->hktxt1[it], &p);
			g_print_text(dev, p, y, style_wb, menu->hktxt2[it], &p);
			g_print_text(dev, p, y, style_wb, menu->hktxt3[it], &p);
			if (menu->items[it].free_i & MENU_FONT_LIST) {
				g_free_style(style_wb);
			}
		} else {
			struct style *style_bw, *style_bw_u;
			if (menu->items[it].free_i & MENU_FONT_LIST) {
				style_bw = style_bw_u = g_get_style_font(G_BFU_FG_COLOR, G_BFU_BG_COLOR, G_BFU_FONT_SIZE,
					(menu->items[it].free_i & MENU_FONT_LIST_BOLD ? FF_BOLD : 0) |
					(menu->items[it].free_i & MENU_FONT_LIST_MONO ? FF_MONOSPACED : 0),
					menu->items[it].data);
			} else {
				style_bw = bfu_style_bw;
				style_bw_u = bfu_style_bw_u;
			}
			p = menu->x + G_MENU_LEFT_BORDER + G_MENU_LEFT_INNER_BORDER;
			g_print_text(dev, p, y, style_bw, menu->hktxt1[it], &p);
			g_print_text(dev, p, y, style_bw_u, menu->hktxt2[it], &p);
			g_print_text(dev, p, y, style_bw, menu->hktxt3[it], &p);
			if (menu->items[it].free_i & MENU_FONT_LIST) {
				g_free_style(style_bw);
			}
		}
		if (!*rtext) {
			set_clip_area(dev, &r);
			if (p > menu->x + menu->xw - G_MENU_LEFT_BORDER - G_MENU_LEFT_INNER_BORDER) p = menu->x + menu->xw - G_MENU_LEFT_BORDER - G_MENU_LEFT_INNER_BORDER;
			if (it != menu->selected)
				drv->fill_area(dev, p, y, menu->x + menu->xw - (G_MENU_LEFT_BORDER + 1) / 2, y + G_BFU_FONT_SIZE, bfu_bg_color);
			else
				drv->fill_area(dev, p, y, menu->x + menu->xw - G_MENU_LEFT_BORDER, y + G_BFU_FONT_SIZE, bfu_fg_color);
		} else {
			int s = menu->x + menu->xw - G_MENU_LEFT_BORDER - G_MENU_LEFT_INNER_BORDER - g_text_width(bfu_style_wb, rtext);
			if (s < p) s = p;
			drv->fill_area(dev, p, y, s, y + G_BFU_FONT_SIZE, it != menu->selected ? bfu_bg_color : bfu_fg_color);
			g_print_text(dev, s, y, it != menu->selected ? bfu_style_bw : bfu_style_wb, rtext, NULL);
			set_clip_area(dev, &r);
			if (it != menu->selected)
				drv->fill_area(dev, menu->x + menu->xw - G_MENU_LEFT_BORDER - G_MENU_LEFT_INNER_BORDER, y, menu->x + menu->xw - (G_MENU_LEFT_BORDER + 1) / 2, y + G_BFU_FONT_SIZE, bfu_bg_color);
			else
				drv->fill_area(dev, menu->x + menu->xw - G_MENU_LEFT_BORDER - G_MENU_LEFT_INNER_BORDER, y, menu->x + menu->xw - G_MENU_LEFT_BORDER, y + G_BFU_FONT_SIZE, bfu_fg_color);
		}
	}
}

static void display_menu_gfx(struct terminal *term, void *menu_)
{
	struct menu *menu = (struct menu *)menu_;
	int p;
	struct graphics_device *dev = term->dev;
	if (menu_oldview == menu->view) {
		if (menu_oldsel >= 0 && menu_oldsel < menu->ni && menu_oldsel < menu->view + menu->nview) display_menu_item_gfx(term, menu, menu_oldsel);
		if (menu->selected >= 0 && menu->selected < menu->ni && menu->selected < menu->view + menu->nview) display_menu_item_gfx(term, menu, menu->selected);
		return;
	}
#define PX1 (menu->x + (G_MENU_LEFT_BORDER - 1) / 2)
#define PX2 (menu->x + menu->xw - (G_MENU_LEFT_BORDER + 1) / 2)
#define PY1 (menu->y + (G_MENU_TOP_BORDER - 1) / 2)
#define PY2 (menu->y + menu->yw - (G_MENU_TOP_BORDER + 1) / 2)
	drv->fill_area(dev, menu->x, menu->y, menu->x + menu->xw, PY1, bfu_bg_color);
	drv->fill_area(dev, menu->x, PY1, PX1, PY2 + 1, bfu_bg_color);
	drv->fill_area(dev, PX2 + 1, PY1, menu->x + menu->xw, PY2 + 1, bfu_bg_color);
	drv->fill_area(dev, menu->x, PY2 + 1, menu->x + menu->xw, menu->y + menu->yw, bfu_bg_color);
	drv->draw_hline(dev, PX1, PY1, PX2 + 1, bfu_fg_color);
	drv->draw_hline(dev, PX1, PY2, PX2 + 1, bfu_fg_color);
	drv->draw_vline(dev, PX1, PY1 + 1, PY2, bfu_fg_color);
	drv->draw_vline(dev, PX2, PY1 + 1, PY2, bfu_fg_color);
	drv->fill_area(dev, PX1 + 1, PY1 + 1, PX2, menu->y + G_MENU_TOP_BORDER, bfu_bg_color);
	drv->fill_area(dev, PX1 + 1, menu->y + menu->yw - G_MENU_TOP_BORDER, PX2, PY2, bfu_bg_color);
	menu->xl1 = menu->yl1 = menu->xl2 = menu->yl2 = 0;
	menu_ptr_set = 0;
	for (p = menu->view; p < menu->ni && p < menu->view + menu->nview; p++) display_menu_item_gfx(term, menu, p);
	if (!menu_ptr_set) set_window_ptr(menu->win, menu->x, menu->y);
}

#endif

static void menu_func(struct window *win, struct links_event *ev, int fwd)
{
	int s = 0;
	int xp, yp;
	struct menu *menu = win->data;
	menu->win = win;
	switch ((int)ev->ev) {
		case EV_INIT:
		case EV_RESIZE:
			get_parent_ptr(win, &menu->xp, &menu->yp);
			count_menu_size(win->term, menu);
			goto xxx;
		case EV_REDRAW:
			get_parent_ptr(win, &xp, &yp);
			if (xp != menu->xp || yp != menu->yp) {
				menu->xp = xp;
				menu->yp = yp;
				count_menu_size(win->term, menu);
			}
			xxx:
			menu->selected--;
			scroll_menu(menu, 1);
			draw_to_window(win, gf_val(display_menu_txt, display_menu_gfx), menu);
			break;
		case EV_MOUSE:
			if ((ev->b & BM_ACT) == B_MOVE) break;
			if ((ev->b & BM_BUTT) == B_FOURTH ||
			    (ev->b & BM_BUTT) == B_FIFTH) {
				if ((ev->b & BM_ACT) == B_DOWN) goto go_lr;
				break;
			}
			if ((ev->b & BM_BUTT) == B_SIXTH) {
				break;
			}
			if (ev->x < menu->x || ev->x >= menu->x+menu->xw || ev->y < menu->y || ev->y >= menu->y+menu->yw) {
				int f = 1;
				struct window *w1;
				struct list_head *w1l;
				f = f + 0;	/* avoid warning */
				foreachfrom(struct window, w1, w1l, win->term->windows, &win->list_entry) {
					struct menu *m1;
					if (w1->handler == mainmenu_func) {
#ifdef G
						struct mainmenu *m2 = w1->data;
						if (F && !f && ev->x >= m2->xl1 && ev->x < m2->xl2 && ev->y >= m2->yl1 && ev->y < m2->yl2) goto bbb;
#endif
						if (ev->y < LL) goto del;
						break;
					}
					if (w1->handler != menu_func) break;
					m1 = w1->data;
#ifdef G
					if (F && !f && ev->x >= m1->xl1 && ev->x < m1->xl2 && ev->y >= m1->yl1 && ev->y < m1->yl2) goto bbb;
#endif
					if (ev->x > m1->x && ev->x < m1->x+m1->xw-1 && ev->y > m1->y && ev->y < m1->y+m1->yw-1) goto del;
					f--;
				}
				if ((ev->b & BM_ACT) == B_DOWN) goto del;
				if (0) del:delete_window_ev(win, ev);
#ifdef G
				bbb:;
#endif
			} else {
				if (!(ev->x < menu->x || ev->x >= menu->x+menu->xw || ev->y < menu->y + gf_val(1, G_MENU_TOP_BORDER) || ev->y >= menu->y + menu->yw - gf_val(1, G_MENU_TOP_BORDER))) {
					int s = gf_val(ev->y - menu->y-1 + menu->view, (ev->y - menu->y - G_MENU_TOP_BORDER) / G_BFU_FONT_SIZE + menu->view);
					if (s >= 0 && s < menu->ni && menu->items[s].hotkey != M_BAR) {
						menu_oldview = menu->view;
						menu_oldsel = menu->selected;
						menu->selected = s;
						scroll_menu(menu, 0);
						draw_to_window(win, gf_val(display_menu_txt, display_menu_gfx), menu);
						menu_oldview = menu_oldsel = -1;
						if ((ev->b & BM_ACT) == B_UP /*|| menu->items[s].in_m*/) select_menu(win->term, menu);
					}
				}
			}
			break;
		case EV_KBD:
			if (ev->y & KBD_PASTING) break;
			if (ev->x == KBD_LEFT || ev->x == KBD_RIGHT) {
go_lr:
				if (win->list_entry.next == &win->term->windows)
					goto mm;
				if (list_struct(win->list_entry.next, struct window)->handler == mainmenu_func)
					goto mm;
				if (ev->ev == EV_MOUSE && (ev->b & BM_BUTT) == B_FIFTH) goto mm;
				if (ev->ev == EV_KBD && ev->x == KBD_RIGHT) goto enter;
				delete_window(win);
				break;
			}
			if (ev->x == KBD_ESC) {
				if (win->list_entry.next == &win->term->windows)
					ev = NULL;
				else if (list_struct(win->list_entry.next, struct window)->handler != mainmenu_func)
					ev = NULL;
				delete_window_ev(win, ev);
				break;
			}
			if (KBD_ESCAPE_MENU(ev->x) || ev->y & KBD_ALT) {
				mm:
				delete_window_ev(win, ev);
				break;
			}
			menu_oldview = menu->view;
			menu_oldsel = menu->selected;
			if (ev->x == KBD_UP) scroll_menu(menu, -1);
			else if (ev->x == KBD_DOWN) scroll_menu(menu, 1);
			else if (ev->x == KBD_HOME || (upcase(ev->x) == 'A' && ev->y & KBD_CTRL)) menu->selected = -1, scroll_menu(menu, 1);
			else if (ev->x == KBD_END || (upcase(ev->x) == 'E' && ev->y & KBD_CTRL)) menu->selected = menu->ni, scroll_menu(menu, -1);
			else if (ev->x == KBD_PAGE_UP || (upcase(ev->x) == 'B' && ev->y & KBD_CTRL)) {
				if ((menu->selected -= menu->yw / LL - 3) < -1) menu->selected = -1;
				if ((menu->view -= menu->yw / LL - 2) < 0) menu->view = 0;
				scroll_menu(menu, -1);
			}
			else if (ev->x == KBD_PAGE_DOWN || (upcase(ev->x) == 'F' && ev->y & KBD_CTRL)) {
				if ((menu->selected += menu->yw / LL - 3) > menu->ni) menu->selected = menu->ni;
				if ((menu->view += menu->yw / LL - 2) >= menu->ni - menu->yw + 2) menu->view = menu->ni - menu->yw + 2;
				scroll_menu(menu, 1);
			}
			else if (ev->x > ' ') {
				int i;
				for (i = 0; i < menu->ni; i++) {
					if (charset_upcase(ev->x, term_charset(win->term)) == menu->hotkeys[i]) {
						menu->selected = i;
						scroll_menu(menu, 0);
						s = 1;
					}
				}
			}
			draw_to_window(win, gf_val(display_menu_txt, display_menu_gfx), menu);
			if (s || ev->x == KBD_ENTER || ev->x == ' ') {
				enter:
				menu_oldview = menu_oldsel = -1;
				select_menu(win->term, menu);
			}
			menu_oldview = menu_oldsel = -1;
			break;
		case EV_ABORT:
#ifdef G
			if (F) {
				int i;
				for (i = 0; i < menu->ni; i++) {
					mem_free(menu->hktxt1[i]);
					mem_free(menu->hktxt2[i]);
					mem_free(menu->hktxt3[i]);
				}
				mem_free(menu->hktxt1);
				mem_free(menu->hktxt2);
				mem_free(menu->hktxt3);
			}
#endif
			if (menu->items->free_i) {
				int i;
				for (i = 0; i < menu->ni; i++) {
					if (menu->items[i].free_i & MENU_FREE_TEXT) mem_free(menu->items[i].text);
					if (menu->items[i].free_i & MENU_FREE_RTEXT) mem_free(menu->items[i].rtext);
					if (menu->items[i].free_i & MENU_FREE_HOTKEY) mem_free(menu->items[i].hotkey);
				}
				if (menu->items->free_i & MENU_FREE_ITEMS)
					mem_free(menu->items);
			}
			if (menu->free_function)
				register_bottom_half(menu->free_function, menu->free_data);
			break;
	}
}

void do_mainmenu(struct terminal *term, struct menu_item *items, void *data, int sel)
{
	int i;
	struct mainmenu *menu;
	for (i = 0; items[i].text; i++) if (i == (MAXINT - sizeof(struct mainmenu)) / sizeof(unsigned)) overalloc();
	menu = mem_alloc(sizeof(struct mainmenu) + (!i ? 0 : i - 1) * sizeof(unsigned));
	menu->selected = sel == -1 ? 0 : sel;
	menu->ni = i;
	menu->items = items;
	menu->data = data;
	for (i = 0; i < menu->ni; i++)
		menu->hotkeys[i] = select_hotkey(term, NULL, items[i].hotkey, menu->hotkeys, i);
	add_window(term, mainmenu_func, menu);
	if (sel != -1) {
		/* icc_volatile is workaround for some weird bug in icc or linker,
		   it results in unaligned sse load */
		icc_volatile struct links_event ev = {EV_KBD, KBD_ENTER, 0, 0};
		struct window *win = list_struct(term->windows.next, struct window);
		win->handler(win, (struct links_event *)&ev, 0);
	}
}

static void display_mainmenu(struct terminal *term, void *menu_)
{
	struct mainmenu *menu = (struct mainmenu *)menu_;
	if (!F) {
		int i;
		int p = 2;
		fill_area(term, 0, 0, term->x, 1, ' ', COLOR_MAINMENU);
		for (i = 0; i < menu->ni; i++) {
			int s = 0;
			unsigned c;
			unsigned char *tmptext = get_text_translation(menu->items[i].text, term);
			unsigned char co = i == menu->selected ? s = 1, COLOR_MAINMENU_SELECTED : COLOR_MAINMENU;
			if (i == menu->selected) {
				fill_area(term, p, 0, 2, 1, ' ', co);
				menu->sp = p;
				set_cursor(term, p, 0, term->x - 1, term->y - 1);
				set_window_ptr(menu->win, p, 1);
			}
			if (term->spec->braille) {
				s = 1;
				if (menu->hotkeys[i]) set_char(term, p, 0, menu->hotkeys[i], COLOR_MAINMENU_HOTKEY);
			}
			p += 2;
			for (;; p++) {
				c = GET_TERM_CHAR(term, &tmptext);
				if (!c) break;
				set_char(term, p, 0, c, !s && charset_upcase(c, term_charset(term)) == menu->hotkeys[i] ? s = 1, COLOR_MAINMENU_HOTKEY : co);
			}
			if (i == menu->selected) {
				fill_area(term, p, 0, 2, 1, ' ', co);
			}
			p += 2;
		}
#ifdef G
	} else {
		struct graphics_device *dev = term->dev;
		int i, p;
		drv->fill_area(dev, 0, 0, p = G_MAINMENU_LEFT_BORDER, G_BFU_FONT_SIZE, bfu_bg_color);
		for (i = 0; i < menu->ni; i++) {
			int s = i == menu->selected;
			unsigned char *text = get_text_translation(menu->items[i].text, term);
			if (s) {
				menu->xl1 = p;
				menu->yl1 = 0;
				set_window_ptr(menu->win, p, G_BFU_FONT_SIZE);
			}
			drv->fill_area(dev, p, 0, p + G_MAINMENU_BORDER, G_BFU_FONT_SIZE, s ? bfu_fg_color : bfu_bg_color);
			p += G_MAINMENU_BORDER;
			g_print_text(dev, p, 0, s ? bfu_style_wb : bfu_style_bw, text, &p);
			drv->fill_area(dev, p, 0, p + G_MAINMENU_BORDER, G_BFU_FONT_SIZE, s ? bfu_fg_color : bfu_bg_color);
			p += G_MAINMENU_BORDER;
			if (s) {
				menu->xl2 = p;
				menu->yl2 = G_BFU_FONT_SIZE;
			}
		}
		drv->fill_area(dev, p, 0, term->x, G_BFU_FONT_SIZE, bfu_bg_color);
#endif
	}
}

static void select_mainmenu(struct terminal *term, struct mainmenu *menu)
{
	struct menu_item *it;
	if (menu->selected < 0 || menu->selected >= menu->ni) return;
	it = &menu->items[menu->selected];
	if (it->hotkey == M_BAR) return;
	if (!it->in_m) {
		struct window *win;
		struct list_head *lwin;
		foreach(struct window, win, lwin, term->windows) {
			if (win->handler != menu_func && win->handler != mainmenu_func)
				break;
			lwin = lwin->prev;
			delete_window(win);
		}
	}
	it->func(term, it->data, menu->data);
}

static void mainmenu_func(struct window *win, struct links_event *ev, int fwd)
{
	int s = 0;
	int in_menu;
	struct mainmenu *menu = win->data;
	menu->win = win;
	switch ((int)ev->ev) {
		case EV_INIT:
		case EV_RESIZE:
#ifdef G
			if (F) set_window_pos(win, 0, 0, win->term->x, G_BFU_FONT_SIZE);
#endif
			/*-fallthrough*/
		case EV_REDRAW:
			draw_to_window(win, display_mainmenu, menu);
			break;
		case EV_MOUSE:
			in_menu = ev->x >= 0 && ev->x < win->term->x && ev->y >= 0 && ev->y < LL;
			if ((ev->b & BM_ACT) == B_MOVE) break;
			if ((ev->b & BM_BUTT) == B_FOURTH) {
				if ((ev->b & BM_ACT) == B_DOWN) goto go_left;
				break;
			}
			if ((ev->b & BM_BUTT) == B_FIFTH) {
				if ((ev->b & BM_ACT) == B_DOWN) goto go_right;
				break;
			}
			if ((ev->b & BM_BUTT) == B_SIXTH) {
				break;
			}
			if ((ev->b & BM_ACT) == B_DOWN && !in_menu) delete_window_ev(win, ev);
			else if (in_menu) {
				int i;
				int p = gf_val(2, G_MAINMENU_LEFT_BORDER);
				for (i = 0; i < menu->ni; i++) {
					int o = p;
					unsigned char *tmptext = get_text_translation(menu->items[i].text, win->term);
					p += txtlen(win->term, tmptext) + gf_val(4, 2 * G_MAINMENU_BORDER);
					if (ev->x >= o && ev->x < p) {
						menu->selected = i;
						draw_to_window(win, display_mainmenu, menu);
						if ((ev->b & BM_ACT) == B_UP || (menu->items[s].in_m && !win->term->spec->braille)) select_mainmenu(win->term, menu);
						break;
					}
				}
			}
			break;
		case EV_KBD:
			if (ev->y & KBD_PASTING) break;
			if (ev->x == ' ' || ev->x == KBD_ENTER || ev->x == KBD_DOWN || ev->x == KBD_UP || ev->x == KBD_PAGE_DOWN || (upcase(ev->x) == 'F' && ev->y & KBD_CTRL) || ev->x == KBD_PAGE_UP || (upcase(ev->x) == 'B' && ev->y & KBD_CTRL)) {
				select_mainmenu(win->term, menu);
				break;
			} else if (ev->x == KBD_LEFT) {
go_left:
				if (!menu->selected--) menu->selected = menu->ni - 1;
				s = 1;
				if (fwd) s = 2;
			} else if (ev->x == KBD_RIGHT) {
go_right:
				if (++menu->selected >= menu->ni) menu->selected = 0;
				s = 1;
				if (fwd) s = 2;
			} else if (ev->x == KBD_HOME || (upcase(ev->x) == 'A' && ev->y & KBD_CTRL)) {
				menu->selected = 0;
				s = 1;
			} else if (ev->x == KBD_END || (upcase(ev->x) == 'E' && ev->y & KBD_CTRL)) {
				menu->selected = menu->ni - 1;
				s = 1;
			} else if (ev->x > ' ') {
				int i;
				s = 1;
				for (i = 0; i < menu->ni; i++) {
					if (charset_upcase(ev->x, term_charset(win->term)) == menu->hotkeys[i]) {
						menu->selected = i;
						s = 2;
					}
				}
			}
			if (!s) {
				delete_window_ev(win, KBD_ESCAPE_MENU(ev->x) || ev->y & KBD_ALT ? ev : NULL);
				break;
			}
			draw_to_window(win, display_mainmenu, menu);
			if (s == 2) select_mainmenu(win->term, menu);
			break;
		case EV_ABORT:
			break;
	}
}

struct menu_item *new_menu(int free_i)
{
	struct menu_item *mi;
	mi = mem_calloc(sizeof(struct menu_item));
	mi->free_i = free_i;
	return mi;
}

void add_to_menu(struct menu_item **mi, unsigned char *text, unsigned char *rtext, unsigned char *hotkey, void (*func)(struct terminal *, void *, void *), void *data, int in_m, int pos)
{
	struct menu_item *mii;
	int n;
	if (pos != -1) {
		n = pos;
		if ((*mi)[n].text) internal_error("invalid menu position %d", n);
	} else {
		for (n = 0; (*mi)[n].text; n++) if (n == MAXINT) overalloc();
	}
	if (((unsigned)n + 2) > MAXINT / sizeof(struct menu_item)) overalloc();
	mii = mem_realloc(*mi, (n + 2) * sizeof(struct menu_item));
	*mi = mii;
	memcpy(mii + n + 1, mii + n, sizeof(struct menu_item));
	mii[n].text = text;
	mii[n].rtext = rtext;
	mii[n].hotkey = hotkey;
	mii[n].func = func;
	mii[n].data = data;
	mii[n].in_m = in_m;
}

void do_dialog(struct terminal *term, struct dialog *dlg, struct memory_list *ml)
{
	struct dialog_data *dd;
	struct dialog_item *d;
	int n = 0;
	for (d = dlg->items; d->type != D_END; d++) {
		if (n == MAXINT) overalloc();
		n++;
	}
	if ((unsigned)n > (MAXINT - sizeof(struct dialog_data)) / sizeof(struct dialog_item_data)) overalloc();
	dd = mem_calloc(sizeof(struct dialog_data) + sizeof(struct dialog_item_data) * n);
	dd->dlg = dlg;
	dd->n = n;
	dd->ml = ml;
	add_window(term, dialog_func, dd);
}

void display_dlg_item(struct dialog_data *dlg, struct dialog_item_data *di, int sel)
{
	struct terminal *term = dlg->win->term;
	if (!F) switch (di->item->type) {
		unsigned char co;
		unsigned char *text, *t;
		int vposlen, cposlen;
		case D_CHECKBOX:
			/* radio or checkbox */
			if (di->checked) print_text(term, di->x, di->y, 3, cast_uchar "[X]", COLOR_DIALOG_CHECKBOX);
			else print_text(term, di->x, di->y, 3, cast_uchar "[ ]", COLOR_DIALOG_CHECKBOX);
			if (sel) {
				set_cursor(term, di->x + 1, di->y, di->x + 1, di->y);
				set_window_ptr(dlg->win, di->x, di->y);
			}
			break;
		case D_FIELD:
		case D_FIELD_PASS:
			fill_area(term, di->x, di->y, di->l, 1, ' ', COLOR_DIALOG_FIELD);
			if (di->vpos > di->cpos) di->vpos = di->cpos;
			vposlen = ttxtlen(term, di->cdata + di->vpos);
			cposlen = ttxtlen(term, di->cdata + di->cpos);
			if (!di->l) {
				di->vpos = di->cpos;
				vposlen = cposlen;
			} else {
				while (vposlen - cposlen > di->l - 1) {
					t = di->cdata + di->vpos;
					GET_TERM_CHAR(term, &t);
					di->vpos = (int)(t - di->cdata);
					vposlen--;
				}
			}
			if (di->item->type == D_FIELD_PASS) {
				t = mem_alloc(vposlen + 1);
				memset(t, '*', vposlen);
				t[vposlen] = 0;
			} else {
				t = di->cdata + di->vpos;
			}
			print_text(term, di->x, di->y, di->l, t, COLOR_DIALOG_FIELD_TEXT);
			if (di->item->type == D_FIELD_PASS) mem_free(t);
			if (sel) {
				set_cursor(term, di->x + vposlen - cposlen, di->y, di->x + vposlen - cposlen, di->y);
				set_window_ptr(dlg->win, di->x, di->y);
			}
			break;
		case D_BUTTON:
			co = sel ? COLOR_DIALOG_BUTTON_SELECTED : COLOR_DIALOG_BUTTON;
			text = get_text_translation(di->item->text, term);
			print_text(term, di->x, di->y, 2, cast_uchar "[ ", co);
			print_text(term, di->x + 2, di->y, ttxtlen(term, text), text, co);
			print_text(term, di->x + 2 + ttxtlen(term, text), di->y, 2, cast_uchar " ]", co);
			if (sel) {
				set_cursor(term, di->x + 2, di->y, di->x + 2, di->y);
				set_window_ptr(dlg->win, di->x, di->y);
			}
			break;
		default:
			internal_error("display_dlg_item: unknown item: %d", di->item->type);
#ifdef G
	} else {
		struct rect rr;
		struct graphics_device *dev = term->dev;
		if (!dlg->s) restrict_clip_area(dev, &rr, dlg->rr.x1, dlg->rr.y1, dlg->rr.x2, dlg->rr.y2);
		switch (di->item->type) {
			int p, pp;
			struct style *st;
			unsigned char *text, *text2, *text3, *tt, *t;
			struct rect r;
			case D_CHECKBOX:
				p = di->x;
				if (di->checked) {
					if (!sel) g_print_text(dev, di->x, di->y, bfu_style_bw, di->item->gid?cast_uchar(G_DIALOG_RADIO_L G_DIALOG_RADIO_X G_DIALOG_RADIO_R):cast_uchar(G_DIALOG_CHECKBOX_L G_DIALOG_CHECKBOX_X G_DIALOG_CHECKBOX_R), &p);
					else {
						g_print_text(dev, di->x, di->y, bfu_style_bw, di->item->gid?cast_uchar G_DIALOG_RADIO_L:cast_uchar G_DIALOG_CHECKBOX_L, &p);
						g_print_text(dev, p, di->y, bfu_style_bw_u, di->item->gid?cast_uchar G_DIALOG_RADIO_X:cast_uchar G_DIALOG_CHECKBOX_X, &p);
						g_print_text(dev, p, di->y, bfu_style_bw, di->item->gid?cast_uchar G_DIALOG_RADIO_R:cast_uchar G_DIALOG_CHECKBOX_R, &p);
					}
				} else {
					int s = g_text_width(bfu_style_bw, di->item->gid?cast_uchar G_DIALOG_RADIO_X:cast_uchar G_DIALOG_CHECKBOX_X);
					g_print_text(dev, di->x, di->y, bfu_style_bw, di->item->gid?cast_uchar G_DIALOG_RADIO_L:cast_uchar G_DIALOG_CHECKBOX_L, &p);
					if (!sel) drv->fill_area(dev, p, di->y, p + s, di->y + G_BFU_FONT_SIZE, bfu_bg_color), p += s;
					else {
						restrict_clip_area(dev, &r, p, di->y, p + s, di->y + G_BFU_FONT_SIZE);
						g_print_text(dev, p, di->y, bfu_style_bw_u, cast_uchar "          ", NULL);
						p += s;
						set_clip_area(dev, &r);
					}
					g_print_text(dev, p, di->y, bfu_style_bw, di->item->gid?cast_uchar G_DIALOG_RADIO_R:cast_uchar G_DIALOG_CHECKBOX_R, &p);
				}
				di->l = p - di->x;
				if (sel) set_window_ptr(dlg->win, di->x, di->y + G_BFU_FONT_SIZE);
				if (dlg->s) exclude_from_set(&dlg->s, di->x, di->y, p, di->y + G_BFU_FONT_SIZE);
				break;
			case D_FIELD:
			case D_FIELD_PASS:
				text = memacpy(di->cdata, di->cpos);
				if (*(text2 = text3 = di->cdata + di->cpos)) {
					GET_UTF_8(text3, p);
					text2 = memacpy(text2, text3 - text2);
				} else {
					text2 = stracpy(cast_uchar " ");
					text3 = cast_uchar "";
				}
				if (!text2) {
					mem_free(text);
					break;
				}
				text3 = stracpy(text3);
				if (di->item->type == D_FIELD_PASS) {
					unsigned d;
					for (tt = t = text; *tt; ) {
						t = tt;
						GET_UTF_8(tt, d);
						*t++ = '*';
					}
					*t = 0;
					if (di->cdata[di->cpos]) {
						for (tt = t = text2; *tt; ) {
							t = tt;
							GET_UTF_8(tt, d);
							*t++ = '*';
						}
						*t = 0;
						for (tt = t = text3; *tt; ) {
							t = tt;
							GET_UTF_8(tt, d);
							*t++ = '*';
						}
						*t = 0;
					}
				}
				p = g_text_width(bfu_style_wb_mono, text);
				pp = g_text_width(bfu_style_wb_mono, text2);
				if (di->vpos + di->l < p + pp) di->vpos = p + pp - di->l;
				if (di->vpos > p) di->vpos = p;
				if (di->vpos < 0) di->vpos = 0;

				if (dlg->s) exclude_from_set(&dlg->s, di->x, di->y, di->x + di->l, di->y + G_BFU_FONT_SIZE);
				restrict_clip_area(dev, &r, di->x, di->y, di->x + di->l, di->y + G_BFU_FONT_SIZE);
				p = di->x - di->vpos;
				g_print_text(dev, p, di->y, bfu_style_wb_mono, text, &p);
				g_print_text(dev, p, di->y, sel ? bfu_style_wb_mono_u : bfu_style_wb_mono, text2, &p);
				g_print_text(dev, p, di->y, bfu_style_wb_mono, text3, &p);
				drv->fill_area(dev, p, di->y, di->x + di->l, di->y + G_BFU_FONT_SIZE, bfu_fg_color);
				set_clip_area(dev, &r);
				mem_free(text);
				mem_free(text2);
				mem_free(text3);
				if (sel) {
					set_window_ptr(dlg->win, di->x, di->y);
				}

				break;
			case D_BUTTON:
				st = sel ? bfu_style_wb_b : bfu_style_bw;
				text = get_text_translation(di->item->text, term);
				text2 = mem_alloc(strlen(cast_const_char text) + 5);
				strcpy(cast_char text2, cast_const_char G_DIALOG_BUTTON_L);
				strcpy(cast_char(text2 + 2), cast_const_char text);
				strcat(cast_char text2, cast_const_char G_DIALOG_BUTTON_R);
				di->l = 0;
				g_print_text(dev, di->x, di->y, st, text2, &di->l);
				mem_free(text2);
				if (dlg->s) exclude_from_set(&dlg->s, di->x, di->y, di->x + di->l, di->y + G_BFU_FONT_SIZE);
				if (sel) set_window_ptr(dlg->win, di->x, di->y + G_BFU_FONT_SIZE);
				break;
			default:
				internal_error("display_dlg_item: unknown item: %d", di->item->type);
		}
		if (!dlg->s) set_clip_area(dev, &rr);
#endif
	}
}

struct dspd {
	struct dialog_data *dlg;
	struct dialog_item_data *di;
	int sel;
};

static void u_display_dlg_item(struct terminal *term, void *p)
{
	struct dspd *d = p;
	display_dlg_item(d->dlg, d->di, d->sel);
}

static void x_display_dlg_item(struct dialog_data *dlg, struct dialog_item_data *di, int sel)
{
	struct dspd dspd;
	dspd.dlg = dlg, dspd.di = di, dspd.sel = sel;
	draw_to_window(dlg->win, u_display_dlg_item, &dspd);
}

static void dlg_select_item(struct dialog_data *dlg, struct dialog_item_data *di)
{
	if (di->item->type == D_CHECKBOX) {
		if (!di->item->gid) di -> checked = *(int *)di->cdata = !*(int *)di->cdata;
		else {
			int i;
			for (i = 0; i < dlg->n; i++) {
				if (dlg->items[i].item->type == D_CHECKBOX && dlg->items[i].item->gid == di->item->gid) {
					*(int *)dlg->items[i].cdata = di->item->gnum;
					dlg->items[i].checked = 0;
					x_display_dlg_item(dlg, &dlg->items[i], 0);
				}
			}
			di->checked = 1;
		}
		x_display_dlg_item(dlg, di, 1);
	}
	else if (di->item->type == D_BUTTON) di->item->fn(dlg, di);
}

static unsigned char *dlg_get_history_string(struct terminal *term, struct history_item *hi, int l)
{
	unsigned char *s;
	int ch = term_charset(term);
	s = convert(utf8_table, ch, hi->str, NULL);
	if (strlen(cast_const_char s) >= (size_t)l)
		s[l - 1] = 0;
	if (ch == utf8_table) {
		int r = (int)strlen(cast_const_char s);
		unsigned char *p = s;
		while (r) {
			int chl = utf8chrlen(*p);
			if (chl > r) {
				*p = 0;
				break;
			}
			p += chl;
			r -= chl;
		}
	}
	return s;
}

static void dlg_set_history(struct terminal *term, struct dialog_item_data *di)
{
	unsigned char *s;
	if (di->cur_hist == &di->history) s = stracpy(cast_uchar "");
	else s = dlg_get_history_string(term, list_struct(di->cur_hist, struct history_item), di->item->dlen);
	strcpy(cast_char di->cdata, cast_const_char s);
	di->cpos = (int)strlen(cast_const_char s);
	di->vpos = 0;
	mem_free(s);
}

static int dlg_mouse(struct dialog_data *dlg, struct dialog_item_data *di, struct links_event *ev)
{
	switch (di->item->type) {
		case D_BUTTON:
			if (gf_val(ev->y != di->y, ev->y < di->y || ev->y >= di->y + G_BFU_FONT_SIZE) || ev->x < di->x || ev->x >= di->x + gf_val(ttxtlen(dlg->win->term, get_text_translation(di->item->text, dlg->win->term)) + 4, di->l)) return 0;
			if (dlg->selected != di - dlg->items) {
				x_display_dlg_item(dlg, &dlg->items[dlg->selected], 0);
				dlg->selected = (int)(di - dlg->items);
				x_display_dlg_item(dlg, di, 1);
			}
			if ((ev->b & BM_ACT) == B_UP) dlg_select_item(dlg, di);
			return 1;
		case D_FIELD:
		case D_FIELD_PASS:
			if (gf_val(ev->y != di->y, ev->y < di->y || ev->y >= di->y + G_BFU_FONT_SIZE) || ev->x < di->x || ev->x >= di->x + di->l) return 0;
			if (!is_utf_8(dlg->win->term)) {
				if ((size_t)(di->cpos = di->vpos + ev->x - di->x) > strlen(cast_const_char di->cdata)) di->cpos = (int)strlen(cast_const_char di->cdata);
			} else {
				int p, u;
				unsigned char *t = di->cdata;
				p = di->x - di->vpos;
				while (1) {
					di->cpos = (int)(t - di->cdata);
					if (!*t) break;
					GET_UTF_8(t, u);
					if (!u) continue;
					if (!F) p++;
#ifdef G
					else p += g_char_width(bfu_style_wb_mono, u);
#endif
					if (p > ev->x) break;
				}
			}
			if (dlg->selected != di - dlg->items) {
				x_display_dlg_item(dlg, &dlg->items[dlg->selected], 0);
				dlg->selected = (int)(di - dlg->items);
				x_display_dlg_item(dlg, di, 1);
			} else x_display_dlg_item(dlg, di, 1);
			return 1;
		case D_CHECKBOX:
			if (gf_val(ev->y != di->y, ev->y < di->y || ev->y >= di->y + G_BFU_FONT_SIZE) || ev->x < di->x || ev->x >= di->x + gf_val(3, di->l)) return 0;
			if (dlg->selected != di - dlg->items) {
				x_display_dlg_item(dlg, &dlg->items[dlg->selected], 0);
				dlg->selected = (int)(di - dlg->items);
				x_display_dlg_item(dlg, di, 1);
			}
			if ((ev->b & BM_ACT) == B_UP) dlg_select_item(dlg, di);
			return 1;
	}
	return 0;
}

static void redraw_dialog_items(struct terminal *term, void *dlg_)
{
	struct dialog_data *dlg = (struct dialog_data *)dlg_;
	int i;
	for (i = 0; i < dlg->n; i++) display_dlg_item(dlg, &dlg->items[i], i == dlg->selected);
}

static int dlg_is_braille_moving(struct dialog_data *dlg)
{
	return dlg->win->term->spec->braille && (dlg->dlg->fn == msg_box_fn || dlg->dlg->fn == download_window_function);
}

static void redraw_dialog(struct terminal *term, void *dlg_)
{
	struct dialog_data *dlg = (struct dialog_data *)dlg_;
#ifdef G
	int i;
#endif
	dlg->dlg->fn(dlg);
	redraw_dialog_items(term, dlg);
	if (dlg_is_braille_moving(dlg)) {
		if (dlg->brl_y < dlg->items[0].y - 3)
			set_cursor(term, dlg->x + 6, dlg->y + 3 + dlg->brl_y, dlg->x + 6, dlg->y + 3 + dlg->brl_y);
	}
#ifdef G
	if (F) {
		set_clip_area(term->dev, &dlg->r);
		for (i = 0; i < dlg->s->m; i++) if (is_rect_valid(&dlg->s->r[i]))
			drv->fill_area(term->dev, dlg->s->r[i].x1, dlg->s->r[i].y1, dlg->s->r[i].x2, dlg->s->r[i].y2, bfu_bg_color);
		mem_free(dlg->s);
		dlg->s = NULL;
	}
#endif
}

static void tab_compl(struct terminal *term, void *hi_, void *win_)
{
	struct history_item *hi = (struct history_item *)hi_;
	struct window *win = (struct window *)win_;
	struct links_event ev = {EV_REDRAW, 0, 0, 0};
	struct dialog_item_data *di = &((struct dialog_data*)win->data)->items[((struct dialog_data*)win->data)->selected];
	unsigned char *s = dlg_get_history_string(term, hi, di->item->dlen);
	strcpy(cast_char di->cdata, cast_const_char s);
	di->cpos = (int)strlen(cast_const_char s);
	di->vpos = 0;
	mem_free(s);
	ev.x = term->x;
	ev.y = term->y;
	dialog_func(win, &ev, 0);
}

static void do_tab_compl(struct terminal *term, struct list_head *history, struct window *win)
{
	unsigned char *cdata = ((struct dialog_data*)win->data)->items[((struct dialog_data*)win->data)->selected].cdata;
	int l = (int)strlen(cast_const_char cdata), n = 0;
	struct history_item *hi;
	struct list_head *lhi;
	struct menu_item *items = DUMMY;
	foreach(struct history_item, hi, lhi, *history) {
		unsigned char *s = dlg_get_history_string(term, hi, MAXINT);
		if (!strncmp(cast_const_char cdata, cast_const_char s, l)) {
			if (!(n & (ALLOC_GR - 1))) {
				if ((unsigned)n > MAXINT / sizeof(struct menu_item) - ALLOC_GR - 1) overalloc();
				items = mem_realloc(items, (n + ALLOC_GR + 1) * sizeof(struct menu_item));
			}
			items[n].text = s;
			items[n].rtext = cast_uchar "";
			items[n].hotkey = cast_uchar "";
			items[n].func = tab_compl;
			items[n].rtext = cast_uchar "";
			items[n].data = hi;
			items[n].in_m = 0;
			items[n].free_i = MENU_FREE_ITEMS | MENU_FREE_TEXT;
			if (n == MAXINT) overalloc();
			n++;
		} else {
			mem_free(s);
		}
	}
	if (n == 1) {
		tab_compl(term, items->data, win);
		mem_free(items->text);
		mem_free(items);
		return;
	}
	if (n) {
		memset(&items[n], 0, sizeof(struct menu_item));
		do_menu_selected(term, items, win, n - 1, NULL, NULL);
	}
}

void dialog_func(struct window *win, struct links_event *ev, int fwd)
{
	int i;
	struct terminal *term = win->term;
	struct dialog_data *dlg = win->data;
	struct dialog_item_data *di;

	dlg->win = win;

	/* Use nonstandard event handlers */
	if (dlg->dlg->handle_event && dlg->dlg->handle_event(dlg, ev) == EVENT_PROCESSED) {
		return;
	}

	switch ((int)ev->ev) {
		case EV_INIT:
			for (i = 0; i < dlg->n; i++) {
				/* highc_volatile because of a compiler bug */
				struct dialog_item_data * highc_volatile di = &dlg->items[i];
				memset(di, 0, sizeof(struct dialog_item_data));
				di->item = &dlg->dlg->items[i];
				di->cdata = mem_alloc(di->item->dlen);
				if (di->item->dlen)
					memcpy(di->cdata, di->item->data, di->item->dlen);
				if (di->item->type == D_CHECKBOX) {
					if (di->item->gid) {
						if (*(int *)di->cdata == di->item->gnum) di->checked = 1;
					} else if (*(int *)di->cdata) di->checked = 1;
				}
				init_list(di->history);
				di->cur_hist = &di->history;
				if (di->item->type == D_FIELD || di->item->type == D_FIELD_PASS) {
					if (di->item->history) {
						struct history_item *j;
						struct list_head *lj;
						foreach(struct history_item, j, lj, di->item->history->items) {
							struct history_item *hi;
							size_t sl = strlen(cast_const_char j->str);
							if (sl > MAXINT - sizeof(struct history_item)) overalloc();
							hi = mem_alloc(sizeof(struct history_item) + sl);
							strcpy(cast_char hi->str, cast_const_char j->str);
							add_to_list(di->history, hi);
						}
					}
					di->cpos = (int)strlen(cast_const_char di->cdata);
				}
			}
			dlg->selected = 0;
			/*-fallthrough*/
		case EV_RESIZE:
				/* this must be really called twice !!! */
			draw_to_window(dlg->win, redraw_dialog, dlg);
			/*-fallthrough*/
		case EV_REDRAW:
			redraw:
			draw_to_window(dlg->win, redraw_dialog, dlg);
			break;
		case EV_MOUSE:
			if ((ev->b & BM_ACT) == B_MOVE) break;
			if ((ev->b & BM_BUTT) == B_FOURTH) {
				if ((ev->b & BM_ACT) == B_DOWN) goto go_prev;
				break;
			}
			if ((ev->b & BM_BUTT) == B_FIFTH) {
				if ((ev->b & BM_ACT) == B_DOWN) goto go_next;
				break;
			}
			if ((ev->b & BM_BUTT) == B_SIXTH) {
				if ((ev->b & BM_ACT) == B_DOWN) goto go_enter;
				break;
			}
			for (i = 0; i < dlg->n; i++) if (dlg_mouse(dlg, &dlg->items[i], ev)) break;
			if ((ev->b & BM_ACT) == B_DOWN && (ev->b & BM_BUTT) == B_MIDDLE) {
				di = &dlg->items[dlg->selected];  /* don't delete this!!! it's here because of jump from mouse event */
				if (di->item->type == D_FIELD || di->item->type == D_FIELD_PASS) goto clipbd_paste;
			}
			break;
		case EV_KBD:
			di = &dlg->items[dlg->selected];
			if (ev->y & KBD_PASTING) {
				if (!((di->item->type == D_FIELD || di->item->type == D_FIELD_PASS) &&
				      (ev->x >= ' ' && !(ev->y & (KBD_CTRL | KBD_ALT)))))
					break;
			}
			if (ev->x == KBD_UP && dlg_is_braille_moving(dlg)) {
				if (dlg->brl_y) dlg->brl_y--;
				goto redraw;
			}
			if (ev->x == KBD_DOWN && dlg_is_braille_moving(dlg)) {
				if (dlg->brl_y < dlg->items[0].y - 3) dlg->brl_y++;
				goto redraw;
			}
			if ((ev->x == KBD_HOME || (upcase(ev->x) == 'A' && ev->y & KBD_CTRL) || ev->x == KBD_PAGE_UP || (upcase(ev->x) == 'B' && ev->y & KBD_CTRL)) && dlg_is_braille_moving(dlg)) {
				dlg->brl_y = 0;
				goto redraw;
			}
			if ((ev->x == KBD_END || (upcase(ev->x) == 'E' && ev->y & KBD_CTRL)) && dlg_is_braille_moving(dlg)) {
				dlg->brl_y = dlg->items[0].y - 4;
				goto redraw;
			}
			if ((ev->x == KBD_PAGE_DOWN || (upcase(ev->x) == 'F' && ev->y & KBD_CTRL)) && dlg_is_braille_moving(dlg)) {
				dlg->brl_y = dlg->items[0].y - 3;
				goto redraw;
			}
			if (di->item->type == D_FIELD || di->item->type == D_FIELD_PASS) {
				if (ev->x == KBD_UP && di->cur_hist->prev != &di->history) {
					di->cur_hist = di->cur_hist->prev;
					dlg_set_history(term, di);
					goto dsp_f;
				}
				if (ev->x == KBD_DOWN && di->cur_hist != &di->history) {
					di->cur_hist = di->cur_hist->next;
					dlg_set_history(term, di);
					goto dsp_f;
				}
				if (ev->x == KBD_RIGHT) {
					if ((size_t)di->cpos < strlen(cast_const_char di->cdata)) {
						if (!is_utf_8(term)) di->cpos++;
						else {
							int u;
							unsigned char *p = di->cdata + di->cpos;
							GET_UTF_8(p, u);
							di->cpos = (int)(p - di->cdata);
						}
					}
					goto dsp_f;
				}
				if (ev->x == KBD_LEFT) {
					if (di->cpos > 0) {
						if (!is_utf_8(term)) di->cpos--;
						else {
							unsigned char *p = di->cdata + di->cpos;
							BACK_UTF_8(p, di->cdata);
							di->cpos = (int)(p - di->cdata);
						}
					}
					goto dsp_f;
				}
				if (ev->x == KBD_HOME || (upcase(ev->x) == 'A' && ev->y & KBD_CTRL)) {
					di->cpos = 0;
					goto dsp_f;
				}
				if (ev->x == KBD_END || (upcase(ev->x) == 'E' && ev->y & KBD_CTRL)) {
					di->cpos = (int)strlen(cast_const_char di->cdata);
					goto dsp_f;
				}
				if (ev->x >= ' ' && !(ev->y & (KBD_CTRL | KBD_ALT))) {
					unsigned char *u;
					unsigned char p[2] = { 0, 0 };
					if (cp2u(ev->x, term_charset(term)) == -1)
						break;
					if (!is_utf_8(term)) {
						p[0] = (unsigned char)ev->x, u = p;
					} else {
						u = encode_utf_8(ev->x);
					}
					if (strlen(cast_const_char di->cdata) + strlen(cast_const_char u) < (size_t)di->item->dlen) {
						memmove(di->cdata + di->cpos + strlen(cast_const_char u), di->cdata + di->cpos, strlen(cast_const_char di->cdata) - di->cpos + 1);
						memcpy(&di->cdata[di->cpos], u, strlen(cast_const_char u));
						di->cpos += (int)strlen(cast_const_char u);
					}
					goto dsp_f;
				}
				if (ev->x == KBD_BS) {
					if (di->cpos) {
						int s = 1;
						if (is_utf_8(term)) {
							unsigned u;
							unsigned char *p, *pp;
							p = di->cdata;
							a:
							pp = p;
							GET_UTF_8(p, u);
							if (p < di->cdata + di->cpos) goto a;
							s = (int)(p - pp);
						}
						memmove(di->cdata + di->cpos - s, di->cdata + di->cpos, strlen(cast_const_char di->cdata) - di->cpos + s);
						di->cpos -= s;
					}
					goto dsp_f;
				}
				if (ev->x == KBD_DEL || (upcase(ev->x) == 'D' && ev->y & KBD_CTRL)) {
					if ((size_t)di->cpos < strlen(cast_const_char di->cdata)) {
						int s = 1;
						if (is_utf_8(term)) {
							unsigned u;
							unsigned char *p = di->cdata + di->cpos;
							GET_UTF_8(p, u);
							s = (int)(p - (di->cdata + di->cpos));
						}
						memmove(di->cdata + di->cpos, di->cdata + di->cpos + s, strlen(cast_const_char di->cdata) - di->cpos + s);
					}
					goto dsp_f;
				}
				if (upcase(ev->x) == 'U' && ev->y & KBD_CTRL) {
					unsigned char *a = memacpy(di->cdata, di->cpos);
					if (a) {
						set_clipboard_text(term, a);
						mem_free(a);
					}
					memmove(di->cdata, di->cdata + di->cpos, strlen(cast_const_char di->cdata + di->cpos) + 1);
					di->cpos = 0;
					goto dsp_f;
				}
				if (upcase(ev->x) == 'K' && ev->y & KBD_CTRL) {
					set_clipboard_text(term, di->cdata + di->cpos);
					di->cdata[di->cpos] = 0;
					goto dsp_f;
				}
				/* Copy to clipboard */
				if ((ev->x == KBD_INS && ev->y & KBD_CTRL) || (upcase(ev->x) == 'B' && ev->y & KBD_CTRL) || ev->x == KBD_COPY) {
					set_clipboard_text(term, di->cdata);
					break;	/* We don't need to redraw */
				}
				/* FIXME -- why keyboard shortcuts with shift don't works??? */
				/* Cut to clipboard */
				if ((ev->x == KBD_DEL && ev->y & KBD_SHIFT) || (upcase(ev->x) == 'X' && ev->y & KBD_CTRL) || ev->x == KBD_CUT) {
					set_clipboard_text(term, di->cdata);
					di->cdata[0] = 0;
					di->cpos = 0;
					goto dsp_f;
				}
				/* Paste from clipboard */
				if ((ev->x == KBD_INS && ev->y & KBD_SHIFT) || (upcase(ev->x) == 'V' && ev->y & KBD_CTRL) || ev->x == KBD_PASTE) {
					unsigned char *clipboard;
clipbd_paste:
					clipboard = get_clipboard_text(term);
					if (clipboard) {
						unsigned char *nl = clipboard;
						while ((nl = cast_uchar strchr(cast_const_char nl, '\n'))) *nl = ' ';
						if (strlen(cast_const_char di->cdata) + strlen(cast_const_char clipboard) < (size_t)di->item->dlen ||
						    strlen(cast_const_char di->cdata) + strlen(cast_const_char clipboard) < strlen(cast_const_char di->cdata)) {
							memmove(di->cdata + di->cpos + strlen(cast_const_char clipboard), di->cdata + di->cpos, strlen(cast_const_char di->cdata) - di->cpos + 1);
							memcpy(&di->cdata[di->cpos], clipboard, strlen(cast_const_char clipboard));
							di->cpos += (int)strlen(cast_const_char clipboard);
						}
						mem_free(clipboard);
					}
					goto dsp_f;
				}
				if ((upcase(ev->x) == 'W' && ev->y & KBD_CTRL) || ev->x == KBD_FIND) {
					do_tab_compl(term, &di->history, win);
					goto dsp_f;
				}
				goto gh;
				dsp_f:
				x_display_dlg_item(dlg, di, 1);
				break;
			}
			if ((ev->x == KBD_ENTER && di->item->type == D_BUTTON) || ev->x == ' ') {
				dlg_select_item(dlg, di);
				break;
			}
			gh:
			if (ev->x > ' ') for (i = 0; i < dlg->n; i++) {
				unsigned char *tx = get_text_translation(dlg->dlg->items[i].text, term);
				if (dlg->dlg->items[i].type == D_BUTTON && charset_upcase(GET_TERM_CHAR(term, &tx), term_charset(term)) == charset_upcase(ev->x, term_charset(term))) goto sel;
			}
			if (ev->x == KBD_ENTER) {
go_enter:
				for (i = 0; i < dlg->n; i++)
					if (dlg->dlg->items[i].type == D_BUTTON && dlg->dlg->items[i].gid & B_ENTER) goto sel;
				break;
			}
			if (ev->x == KBD_ESC) {
				for (i = 0; i < dlg->n; i++)
					if (dlg->dlg->items[i].type == D_BUTTON && dlg->dlg->items[i].gid & B_ESC) goto sel;
				break;
			}
			if (0) {
				sel:
				if (dlg->selected != i) {
					x_display_dlg_item(dlg, &dlg->items[dlg->selected], 0);
					x_display_dlg_item(dlg, &dlg->items[i], 1);
					dlg->selected = i;
				}
				dlg_select_item(dlg, &dlg->items[i]);
				break;
			}
			if (((ev->x == KBD_TAB && !ev->y) || ev->x == KBD_DOWN || ev->x == KBD_RIGHT) && (dlg->n > 1 || term->spec->braille)) {
go_next:
				if (term->spec->braille) dlg->brl_y = dlg->items[0].y - 3;
				x_display_dlg_item(dlg, &dlg->items[dlg->selected], 0);
				if ((++dlg->selected) >= dlg->n) dlg->selected = 0;
				x_display_dlg_item(dlg, &dlg->items[dlg->selected], 1);
				break;
			}
			if (((ev->x == KBD_TAB && ev->y) || ev->x == KBD_UP || ev->x == KBD_LEFT) && (dlg->n > 1 || term->spec->braille)) {
go_prev:
				if (term->spec->braille) dlg->brl_y = dlg->items[0].y - 3;
				x_display_dlg_item(dlg, &dlg->items[dlg->selected], 0);
				if ((--dlg->selected) < 0) dlg->selected = dlg->n - 1;
				x_display_dlg_item(dlg, &dlg->items[dlg->selected], 1);
				break;
			}
			break;
		case EV_ABORT:
		/* Moved this line up so that the dlg would have access to its
		   member vars before they get freed. */
			if (dlg->dlg->abort) dlg->dlg->abort(dlg);
			for (i = 0; i < dlg->n; i++) {
				struct dialog_item_data *di = &dlg->items[i];
				if (di->cdata) mem_free(di->cdata);
				free_list(struct history_item, di->history);
			}
			freeml(dlg->ml);
	}
}

/* gid and gnum are 100 times greater than boundaries (e.g. if gid==1 boundary is 0.01) */
int check_float(struct dialog_data *dlg, struct dialog_item_data *di)
{
	char *end;
	double d = strtod(cast_const_char di->cdata, &end);
	if (!*di->cdata || *end || di->cdata[strspn(cast_const_char di->cdata, "0123456789.")] || *di->cdata == (unsigned char)'.') {
		msg_box(dlg->win->term, NULL, TEXT_(T_BAD_NUMBER), AL_CENTER, TEXT_(T_NUMBER_EXPECTED), MSG_BOX_END, NULL, 1, TEXT_(T_CANCEL), msg_box_null, B_ENTER | B_ESC);
		return 1;
	}
	if (d < 0 || d > di->item->gnum || 100 * d < di->item->gid || 100 * d > di->item->gnum) {
		msg_box(dlg->win->term, NULL, TEXT_(T_BAD_NUMBER), AL_CENTER, TEXT_(T_NUMBER_OUT_OF_RANGE), MSG_BOX_END, NULL, 1, TEXT_(T_CANCEL), msg_box_null, B_ENTER | B_ESC);
		return 1;
	}
	return 0;
}

int check_number(struct dialog_data *dlg, struct dialog_item_data *di)
{
	char *end;
	long l = strtol(cast_const_char di->cdata, &end, 10);
	if (!*di->cdata || *end) {
		msg_box(dlg->win->term, NULL, TEXT_(T_BAD_NUMBER), AL_CENTER, TEXT_(T_NUMBER_EXPECTED), MSG_BOX_END, NULL, 1, TEXT_(T_CANCEL), msg_box_null, B_ENTER | B_ESC);
		return 1;
	}
	if (l < di->item->gid || l > di->item->gnum) {
		msg_box(dlg->win->term, NULL, TEXT_(T_BAD_NUMBER), AL_CENTER, TEXT_(T_NUMBER_OUT_OF_RANGE), MSG_BOX_END, NULL, 1, TEXT_(T_CANCEL), msg_box_null, B_ENTER | B_ESC);
		return 1;
	}
	return 0;
}

int check_hex_number(struct dialog_data *dlg, struct dialog_item_data *di)
{
	char *end;
	long l = strtol(cast_const_char di->cdata, &end, 16);
	if (!*di->cdata || *end) {
		msg_box(dlg->win->term, NULL, TEXT_(T_BAD_NUMBER), AL_CENTER, TEXT_(T_NUMBER_EXPECTED), MSG_BOX_END, NULL, 1, TEXT_(T_CANCEL), msg_box_null, B_ENTER | B_ESC);
		return 1;
	}
	if (l < di->item->gid || l > di->item->gnum) {
		msg_box(dlg->win->term, NULL, TEXT_(T_BAD_NUMBER), AL_CENTER, TEXT_(T_NUMBER_OUT_OF_RANGE), MSG_BOX_END, NULL, 1, TEXT_(T_CANCEL), msg_box_null, B_ENTER | B_ESC);
		return 1;
	}
	return 0;
}

int check_nonempty(struct dialog_data *dlg, struct dialog_item_data *di)
{
	unsigned char *p;
	for (p = di->cdata; *p; p++) if (*p > ' ') return 0;
	msg_box(dlg->win->term, NULL, TEXT_(T_BAD_STRING), AL_CENTER, TEXT_(T_EMPTY_STRING_NOT_ALLOWED), MSG_BOX_END, NULL, 1, TEXT_(T_CANCEL), msg_box_null, B_ENTER | B_ESC);
	return 1;
}

static int check_local_ip_address_internal(struct dialog_data *dlg, struct dialog_item_data *di, int pf)
{
	int s;
	int rs;
	unsigned char *p = di->cdata;
	if (!*p) {
		return 0;
	}
	s = socket_and_bind(pf, p);
	if (s != -1) {
		EINTRLOOP(rs, close(s));
	} else {
		if (1
#ifdef ENFILE
			&& errno != ENFILE
#endif
#ifdef EMFILE
			&& errno != EMFILE
#endif
#ifdef ENOBUFS
			&& errno != ENOBUFS
#endif
#ifdef ENOMEM
			&& errno != ENOMEM
#endif
			) {
				unsigned char *er = strerror_alloc(errno, dlg->win->term);
				unsigned char *ad = stracpy(p);
				msg_box(dlg->win->term, getml(er, ad, NULL), TEXT_(T_BAD_IP_ADDRESS), AL_CENTER, TEXT_(T_UNABLE_TO_USE_LOCAL_IP_ADDRESS), cast_uchar " ", ad, cast_uchar ": ", er, MSG_BOX_END, NULL, 1, TEXT_(T_CANCEL), msg_box_null, B_ENTER | B_ESC);
				return 1;
		}
	}
	return 0;
}

int check_local_ip_address(struct dialog_data *dlg, struct dialog_item_data *di)
{
	return check_local_ip_address_internal(dlg, di, PF_INET);
}

int check_local_ipv6_address(struct dialog_data *dlg, struct dialog_item_data *di)
{
#ifdef SUPPORT_IPV6
	return check_local_ip_address_internal(dlg, di, PF_INET6);
#else
	return 0;
#endif
}

int cancel_dialog(struct dialog_data *dlg, struct dialog_item_data *di)
{
	delete_window(dlg->win);
	return 0;
}

int check_dialog(struct dialog_data *dlg)
{
	int i;
	for (i = 0; i < dlg->n; i++)
		if (dlg->dlg->items[i].type == D_CHECKBOX || dlg->dlg->items[i].type == D_FIELD || dlg->dlg->items[i].type == D_FIELD_PASS)
			if (dlg->dlg->items[i].fn && dlg->dlg->items[i].fn(dlg, &dlg->items[i])) {
				dlg->selected = i;
				draw_to_window(dlg->win, redraw_dialog_items, dlg);
				return 1;
			}
	return 0;
}

void get_dialog_data(struct dialog_data *dlg)
{
	int i;
	for (i = 0; i < dlg->n; i++) {
		/* highc_volatile because of a compiler bug */
		void * highc_volatile p1 = dlg->dlg->items[i].data;
		void * highc_volatile p2 = dlg->items[i].cdata;
		highc_volatile int l = dlg->dlg->items[i].dlen;
		if (l)
			memcpy(p1, p2, l);
	}
}

int ok_dialog(struct dialog_data *dlg, struct dialog_item_data *di)
{
	void (*fn)(void *) = dlg->dlg->refresh;
	void *data = dlg->dlg->refresh_data;
	if (check_dialog(dlg)) return 1;
	get_dialog_data(dlg);
	if (fn) fn(data);
	return cancel_dialog(dlg, di);
}

void center_dlg(struct dialog_data *dlg)
{
	if (!dlg->win->term->spec->braille) {
		dlg->x = (dlg->win->term->x - dlg->xw) / 2;
		dlg->y = (dlg->win->term->y - dlg->yw) / 2;
	} else {
		dlg->x = -6;
		dlg->y = -1;
		dlg->xw = dlg->win->term->x + 12;
		dlg->yw = dlg->win->term->y + 3;
	}
}

void draw_dlg(struct dialog_data *dlg)
{
	if (!F) {
		int i, tpos;
		struct terminal *term = dlg->win->term;
		fill_area(term, dlg->x, dlg->y, dlg->xw, dlg->yw, ' ', COLOR_DIALOG);
		draw_frame(term, dlg->x + DIALOG_LEFT_BORDER, dlg->y + DIALOG_TOP_BORDER, dlg->xw - 2 * DIALOG_LEFT_BORDER, dlg->yw - 2 * DIALOG_TOP_BORDER, COLOR_DIALOG_FRAME, DIALOG_FRAME);
		i = ttxtlen(term, get_text_translation(dlg->dlg->title, term));
		tpos = (dlg->xw - i) / 2;
		if (term->spec->braille) tpos = 9;
		print_text(term, tpos + dlg->x - 1, dlg->y + DIALOG_TOP_BORDER, 1, cast_uchar " ", COLOR_DIALOG_TITLE);
		print_text(term, tpos + dlg->x, dlg->y + DIALOG_TOP_BORDER, i, get_text_translation(dlg->dlg->title, term), COLOR_DIALOG_TITLE);
		print_text(term, tpos + dlg->x + i, dlg->y + DIALOG_TOP_BORDER, 1, cast_uchar " ", COLOR_DIALOG_TITLE);
#ifdef G
	} else {
		struct graphics_device *dev = dlg->win->term->dev;
		struct rect r;
		struct rect rt;
		unsigned char *text = get_text_translation(dlg->dlg->title, dlg->win->term);
		int xtl = txtlen(dlg->win->term, text);
		int tl = xtl + 2 * G_DIALOG_TITLE_BORDER;
		int TXT_X, TXT_Y;
		if (tl > dlg->xw - 2 * G_DIALOG_LEFT_BORDER - 2 * G_DIALOG_VLINE_SPACE) tl = dlg->xw - 2 * G_DIALOG_LEFT_BORDER - 2 * G_DIALOG_VLINE_SPACE;
		TXT_X = dlg->x + (dlg->xw - tl) / 2;
		TXT_Y = dlg->y + G_DIALOG_TOP_BORDER + (G_DIALOG_HLINE_SPACE + 1) / 2 - G_BFU_FONT_SIZE / 2;
		if (TXT_Y < dlg->y) TXT_Y = dlg->y;
		if (TXT_Y < dlg->y + G_DIALOG_TOP_BORDER + G_DIALOG_HLINE_SPACE + 1 - G_BFU_FONT_SIZE) TXT_Y = dlg->y + G_DIALOG_TOP_BORDER + G_DIALOG_HLINE_SPACE + 1 - G_BFU_FONT_SIZE;
		set_window_pos(dlg->win, dlg->x, dlg->y, dlg->x + dlg->xw, dlg->y + dlg->yw);

		restrict_clip_area(dev, &r, TXT_X, TXT_Y, TXT_X + tl, TXT_Y + G_BFU_FONT_SIZE);
		rt.x1 = TXT_X;
		rt.x2 = TXT_X + tl;
		rt.y1 = TXT_Y;
		rt.y2 = TXT_Y + G_BFU_FONT_SIZE;
		if (xtl > tl) g_print_text(dev, TXT_X, TXT_Y, bfu_style_wb, text, NULL);
		else {
			drv->fill_area(dev, TXT_X, TXT_Y, TXT_X + (tl - xtl) / 2, TXT_Y + G_BFU_FONT_SIZE, bfu_fg_color);
			g_print_text(dev, TXT_X + (tl - xtl) / 2, TXT_Y, bfu_style_wb, text, NULL);
			drv->fill_area(dev, TXT_X + (tl - xtl) / 2 + xtl, TXT_Y, TXT_X + tl, TXT_Y + G_BFU_FONT_SIZE, bfu_fg_color);
		}
		set_clip_area(dev, &r);

		drv->draw_hline(dev, dlg->x + G_DIALOG_LEFT_BORDER, dlg->y + G_DIALOG_TOP_BORDER, TXT_X, bfu_fg_color);
		drv->draw_hline(dev, dlg->x + G_DIALOG_LEFT_BORDER + G_DIALOG_VLINE_SPACE, dlg->y + G_DIALOG_TOP_BORDER + G_DIALOG_HLINE_SPACE, TXT_X, bfu_fg_color);
		drv->draw_hline(dev, TXT_X + tl, dlg->y + G_DIALOG_TOP_BORDER, dlg->x + dlg->xw - G_DIALOG_LEFT_BORDER, bfu_fg_color);
		drv->draw_hline(dev, TXT_X + tl, dlg->y + G_DIALOG_TOP_BORDER + G_DIALOG_HLINE_SPACE, dlg->x + dlg->xw - G_DIALOG_LEFT_BORDER - G_DIALOG_VLINE_SPACE, bfu_fg_color);
		drv->draw_hline(dev, dlg->x + G_DIALOG_LEFT_BORDER, dlg->y + dlg->yw - G_DIALOG_TOP_BORDER - 1, dlg->x + dlg->xw - G_DIALOG_LEFT_BORDER, bfu_fg_color);
		drv->draw_hline(dev, dlg->x + G_DIALOG_LEFT_BORDER + G_DIALOG_VLINE_SPACE, dlg->y + dlg->yw - G_DIALOG_TOP_BORDER - G_DIALOG_HLINE_SPACE - 1, dlg->x + dlg->xw - G_DIALOG_LEFT_BORDER - G_DIALOG_VLINE_SPACE, bfu_fg_color);

		drv->draw_vline(dev, dlg->x + G_DIALOG_LEFT_BORDER, dlg->y + G_DIALOG_TOP_BORDER + 1, dlg->y + dlg->yw - G_DIALOG_TOP_BORDER - 1, bfu_fg_color);
		drv->draw_vline(dev, dlg->x + G_DIALOG_LEFT_BORDER + G_DIALOG_VLINE_SPACE, dlg->y + G_DIALOG_TOP_BORDER + G_DIALOG_HLINE_SPACE + 1, dlg->y + dlg->yw - G_DIALOG_TOP_BORDER - G_DIALOG_HLINE_SPACE - 1, bfu_fg_color);
		drv->draw_vline(dev, dlg->x + dlg->xw - G_DIALOG_LEFT_BORDER - 1, dlg->y + G_DIALOG_TOP_BORDER + 1, dlg->y + dlg->yw - G_DIALOG_TOP_BORDER - 1, bfu_fg_color);
		drv->draw_vline(dev, dlg->x + dlg->xw - G_DIALOG_LEFT_BORDER - G_DIALOG_VLINE_SPACE - 1, dlg->y + G_DIALOG_TOP_BORDER + G_DIALOG_HLINE_SPACE + 1, dlg->y + dlg->yw - G_DIALOG_TOP_BORDER - G_DIALOG_HLINE_SPACE - 1, bfu_fg_color);

		drv->fill_area(dev, dlg->x, dlg->y, TXT_X, dlg->y + G_DIALOG_TOP_BORDER, bfu_bg_color);
		drv->fill_area(dev, TXT_X, dlg->y, TXT_X + tl, TXT_Y, bfu_bg_color);
		drv->fill_area(dev, TXT_X + tl, dlg->y, dlg->x + dlg->xw, dlg->y + G_DIALOG_TOP_BORDER, bfu_bg_color);
		drv->fill_area(dev, dlg->x, dlg->y + G_DIALOG_TOP_BORDER, dlg->x + G_DIALOG_LEFT_BORDER, dlg->y + dlg->yw - G_DIALOG_TOP_BORDER, bfu_bg_color);
		drv->fill_area(dev, dlg->x + dlg->xw - G_DIALOG_LEFT_BORDER, dlg->y + G_DIALOG_TOP_BORDER, dlg->x + dlg->xw, dlg->y + dlg->yw - G_DIALOG_TOP_BORDER, bfu_bg_color);
		drv->fill_area(dev, dlg->x, dlg->y + dlg->yw - G_DIALOG_TOP_BORDER, dlg->x + dlg->xw, dlg->y + dlg->yw, bfu_bg_color);

		drv->fill_area(dev, dlg->x + G_DIALOG_LEFT_BORDER + 1, dlg->y + G_DIALOG_TOP_BORDER + 1, TXT_X, dlg->y + G_DIALOG_TOP_BORDER + G_DIALOG_HLINE_SPACE, bfu_bg_color);
		drv->fill_area(dev, TXT_X + tl, dlg->y + G_DIALOG_TOP_BORDER + 1, dlg->x + dlg->xw - G_DIALOG_LEFT_BORDER - 1, dlg->y + G_DIALOG_TOP_BORDER + G_DIALOG_HLINE_SPACE, bfu_bg_color);
		drv->fill_area(dev, dlg->x + G_DIALOG_LEFT_BORDER + 1, dlg->y + G_DIALOG_TOP_BORDER + G_DIALOG_HLINE_SPACE, dlg->x + G_DIALOG_LEFT_BORDER + G_DIALOG_VLINE_SPACE, dlg->y + dlg->yw - G_DIALOG_TOP_BORDER - G_DIALOG_HLINE_SPACE, bfu_bg_color);
		drv->fill_area(dev, dlg->x + dlg->xw - G_DIALOG_LEFT_BORDER - G_DIALOG_VLINE_SPACE, dlg->y + G_DIALOG_TOP_BORDER + G_DIALOG_HLINE_SPACE, dlg->x + dlg->xw - G_DIALOG_LEFT_BORDER - 1, dlg->y + dlg->yw - G_DIALOG_TOP_BORDER - G_DIALOG_HLINE_SPACE, bfu_bg_color);
		drv->fill_area(dev, dlg->x + G_DIALOG_LEFT_BORDER + 1, dlg->y + dlg->yw - G_DIALOG_TOP_BORDER - G_DIALOG_HLINE_SPACE, dlg->x + dlg->xw - G_DIALOG_LEFT_BORDER - 1, dlg->y + dlg->yw - G_DIALOG_TOP_BORDER - 1, bfu_bg_color);

		dlg->s = init_rect_set();
		dlg->rr.x1 = dlg->x + G_DIALOG_LEFT_BORDER + G_DIALOG_VLINE_SPACE + 1;
		dlg->rr.x2 = dlg->x + dlg->xw - G_DIALOG_LEFT_BORDER - G_DIALOG_VLINE_SPACE - 1;
		dlg->rr.y1 = dlg->y + G_DIALOG_TOP_BORDER + G_DIALOG_HLINE_SPACE + 1;
		dlg->rr.y2 = dlg->y + dlg->yw - G_DIALOG_TOP_BORDER - G_DIALOG_HLINE_SPACE - 1;
		add_to_rect_set(&dlg->s, &dlg->rr);
		exclude_rect_from_set(&dlg->s, &rt);
		restrict_clip_area(dev, &dlg->r, dlg->rr.x1, dlg->rr.y1, dlg->rr.x2, dlg->rr.y2);
#endif
	}
}

void max_text_width(struct terminal *term, unsigned char *text, int *width, int align)
{
	if (term->spec->braille) *width = term->x;
	text = get_text_translation(text, term);
	do {
		int c = 0;
		while (*text && *text != '\n') {
			if (!is_utf_8(term)) text++, c++;
			else {
				int u;
				GET_UTF_8(text, u);
				if (!F) c++;
#ifdef G
				else c += g_char_width(align & AL_MONO ? bfu_style_wb_mono : bfu_style_wb, u);
#endif
			}
		}
		if (c > *width) *width = c;
	} while (*(text++));
}

void min_text_width(struct terminal *term, unsigned char *text, int *width, int align)
{
	if (term->spec->braille) *width = term->x;
	text = get_text_translation(text, term);
	do {
		int c = 0;
		while (*text && *text != '\n' && *text != ' ') {
			if (!is_utf_8(term)) text++, c++;
			else {
				int u;
				GET_UTF_8(text, u);
				if (!F) c++;
#ifdef G
				else c += g_char_width(align & AL_MONO ? bfu_style_wb_mono : bfu_style_wb, u);
#endif
			}
		}
		if (c > *width) *width = c;
	} while (*(text++));
}

int dlg_format_text(struct dialog_data *dlg, struct terminal *term, unsigned char *text, int x, int *y, int w, int *rw, unsigned char co, int align)
{
	int xx = x;
#ifdef G
	unsigned char *tx2;
#endif
	text = get_text_translation(text, dlg->win->term);
	if (dlg->win->term->spec->braille && !(align & AL_NOBRLEXP)) w = dlg->win->term->x;
	if (!F) while (1) {
		unsigned char *t1;
		unsigned ch;
		int cx, lbr;

		t1 = text;
		cx = 0;
		lbr = 0;
		next_chr:
		ch = GET_TERM_CHAR(dlg->win->term, &t1);
		if (ch == ' ') {
			lbr = cx;
		}
		if (ch && ch != '\n') {
			if (cx == w) {
				if (!lbr) lbr = cx;
				goto print_line;
			}
			cx++;
			goto next_chr;
		}
		if (!ch && !cx)
			break;
		lbr = cx;
		print_line:
		if (rw && lbr > *rw) *rw = lbr;
		xx = x;
		if ((align & AL_MASK) == AL_CENTER && !dlg->win->term->spec->braille) {
			xx += (w - lbr) / 2;
		}
		for (; lbr--; xx++) {
			ch = GET_TERM_CHAR(dlg->win->term, &text);
			if (term) set_char(term, xx, *y, ch, co);
		}
		xx++;
		if (*text == ' ' || *text == '\n') text++;
		(*y)++;
	}
#ifdef G
	else if ((tx2 = cast_uchar strchr(cast_const_char text, '\n'))) {
		unsigned char *txt = stracpy(text);
		unsigned char *tx1 = txt;
		tx2 = txt + (tx2 - text);
		do {
			*tx2 = 0;
			dlg_format_text(dlg, term, tx1, x, y, w, rw, co, align);
			tx1 = tx2 + 1;
		} while ((tx2 = cast_uchar strchr(cast_const_char tx1, '\n')));
		dlg_format_text(dlg, term, tx1, x, y, w, rw, co, align);
		mem_free(txt);
	} else {
		int www;
		unsigned char *txt;
		struct wrap_struct ww;
		int r;
		ww.style = align & AL_MONO ? bfu_style_bw_mono : bfu_style_bw;
		ww.width = w;
		new_ln:
		ww.text = text;
		ww.obj = NULL;
		ww.pos = 0;
		ww.last_wrap = NULL;
		ww.last_wrap_obj = NULL;
		ww.force_break = 1;
		r = g_wrap_text(&ww);
		if (!r) {
			txt = memacpy(text, ww.last_wrap - text);
			www = g_text_width(ww.style, txt);
			if (!term) mem_free(txt);
			text = ww.last_wrap;
			if (*text == ' ') text++;
		} else {
			www = ww.pos;
			txt = text;
		}
		if (term) {
			int xx = (align & AL_MASK) == AL_CENTER ? x + (w - www) / 2 : x;
			g_print_text(dlg->win->term->dev, xx, *y, ww.style, txt, NULL);
			if (dlg->s) exclude_from_set(&dlg->s, xx, *y, xx + www, *y + G_BFU_FONT_SIZE);
			if (!r) mem_free(txt);
		}
		if (www > w) www = w;
		if (rw && www > *rw) *rw = www;
		*y += G_BFU_FONT_SIZE;
		if (!r) goto new_ln;
	}
#endif
	return xx - x;
}

void max_buttons_width(struct terminal *term, struct dialog_item_data *butt, int n, int *width)
{
	int w = gf_val(-2, -G_DIALOG_BUTTON_SPACE);
	int i;
	if (term->spec->braille) *width = term->x;
	for (i = 0; i < n; i++) w += txtlen(term, get_text_translation((butt++)->item->text, term)) + gf_val(6, G_DIALOG_BUTTON_SPACE + txtlen(term, cast_uchar G_DIALOG_BUTTON_L) + txtlen(term, cast_uchar G_DIALOG_BUTTON_R));
	if (w > *width) *width = w;
}

void min_buttons_width(struct terminal *term, struct dialog_item_data *butt, int n, int *width)
{
	int i;
	if (term->spec->braille) *width = term->x;
	for (i = 0; i < n; i++) {
		int w = txtlen(term, get_text_translation((butt++)->item->text, term)) + gf_val(4, txtlen(term, cast_uchar(G_DIALOG_BUTTON_L G_DIALOG_BUTTON_R)));
		if (w > *width) *width = w;
	}
}

void dlg_format_buttons(struct dialog_data *dlg, struct terminal *term, struct dialog_item_data *butt, int n, int x, int *y, int w, int *rw, int align)
{
	int i1 = 0;
	if (dlg->win->term->spec->braille) w = dlg->win->term->x;
	while (i1 < n) {
		int i2 = i1 + 1;
		int mw;
		while (i2 < n) {
			mw = 0;
			max_buttons_width(dlg->win->term, butt + i1, i2 - i1 + 1, &mw);
			if (mw <= w) i2++;
			else break;
		}
		mw = 0;
		max_buttons_width(dlg->win->term, butt + i1, i2 - i1, &mw);
		if (rw && mw > *rw) if ((*rw = mw) > w) *rw = w;
		if (term) {
			int i;
			int p = x + ((align & AL_MASK) == AL_CENTER ? (w - mw) / 2 : 0);
			for (i = i1; i < i2; i++) {
				butt[i].x = p;
				butt[i].y = *y;
				p += (butt[i].l = txtlen(dlg->win->term, get_text_translation(butt[i].item->text, dlg->win->term)) + gf_val(4, txtlen(dlg->win->term, cast_uchar(G_DIALOG_BUTTON_L G_DIALOG_BUTTON_R)))) + gf_val(2, G_DIALOG_BUTTON_SPACE);
			}
		}
		*y += 2 * LL;
		i1 = i2;
	}
}

void dlg_format_checkbox(struct dialog_data *dlg, struct terminal *term, struct dialog_item_data *chkb, int x, int *y, int w, int *rw, unsigned char *text)
{
	int k = gf_val(4, txtlen(dlg->win->term, cast_uchar(G_DIALOG_CHECKBOX_L G_DIALOG_CHECKBOX_X G_DIALOG_CHECKBOX_R)) + G_DIALOG_CHECKBOX_SPACE);
	if (term) {
		chkb->x = x;
		chkb->y = *y;
	}
	if (rw) *rw -= k;
	dlg_format_text(dlg, term, text, x + k, y, w - k, rw, COLOR_DIALOG_CHECKBOX_TEXT, AL_LEFT | AL_NOBRLEXP);
	if (rw) *rw += k;
}

void dlg_format_checkboxes(struct dialog_data *dlg, struct terminal *term, struct dialog_item_data *chkb, int n, int x, int *y, int w, int *rw, unsigned char * const *texts)
{
	if (dlg->win->term->spec->braille) w = dlg->win->term->x;
	while (n) {
		dlg_format_checkbox(dlg, term, chkb, x, y, w, rw, texts[0]);
		texts++; chkb++; n--;
	}
}

void checkboxes_width(struct terminal *term, unsigned char * const *texts, int n, int *w, void (*fn)(struct terminal *, unsigned char *, int *, int))
{
	int k = gf_val(4, txtlen(term, cast_uchar(G_DIALOG_CHECKBOX_L G_DIALOG_CHECKBOX_X G_DIALOG_CHECKBOX_R)) + G_DIALOG_CHECKBOX_SPACE);
	while (n--) {
		*w -= k;
		fn(term, get_text_translation(texts[0], term), w, 0);
		*w += k;
		texts++;
	}
}

void dlg_format_field(struct dialog_data *dlg, struct terminal *term, struct dialog_item_data *item, int x, int *y, int w, int *rw, int align)
{
	if (dlg->win->term->spec->braille) w = dlg->win->term->x;
	if (term) {
		int l = gf_val(item->item->dlen, item->item->dlen * G_DIALOG_FIELD_WIDTH);
		item->x = x;
		item->y = *y;
		item->l = w;
		if (item->l > l)
			item->l = l;
		if (rw && item->l > *rw) *rw = item->l;
	}
	(*y) += LL;
}

void dlg_format_text_and_field(struct dialog_data *dlg, struct terminal *term, unsigned char *text, struct dialog_item_data *item, int x, int *y, int w, int *rw, unsigned char co, int align)
{
	if (!dlg->win->term->spec->braille) {
		dlg_format_text(dlg, term, text, x, y, w, rw, co, align);
		dlg_format_field(dlg, term, item, x, y, w, rw, align);
	} else {
		int pos = dlg_format_text(dlg, term, text, x, y, w, rw, co, align);
		if (pos >= w - 4) (*y)++, pos = 0;
		if (term) {
			item->x = x + pos;
			item->y = *y - 1;
			item->l = w - pos;
		}
	}
}


#if 0
/* Layout for generic boxes */
void dlg_format_box(struct terminal *term, struct terminal *t2, struct dialog_item_data *item, int x, int *y, int w, int *rw, int align) {
	item->x = x;
	item->y = *y;
	item->l = w;
	if (rw && item->l > *rw) if ((*rw = item->l) > w) *rw = w;
	(*y) += item->item->gid;
}
#endif

void max_group_width(struct terminal *term, unsigned char * const *texts, struct dialog_item_data *item, int n, int *w)
{
	int ww = 0;
	if (term->spec->braille) *w = term->x;
	while (n--) {
		int wx = item->item->type == D_CHECKBOX ? gf_val(4, txtlen(term, cast_uchar(G_DIALOG_CHECKBOX_L G_DIALOG_CHECKBOX_X G_DIALOG_CHECKBOX_R)) + G_DIALOG_CHECKBOX_SPACE) :
			item->item->type == D_BUTTON ? txtlen(term, get_text_translation(item->item->text, term)) + (gf_val(4, txtlen(term, cast_uchar(G_DIALOG_BUTTON_L G_DIALOG_BUTTON_R)))) :
			gf_val(item->item->dlen, item->item->dlen * G_DIALOG_FIELD_WIDTH);
		wx += txtlen(term, get_text_translation(texts[0], term)) + gf_val(1, G_DIALOG_GROUP_TEXT_SPACE);
		if (n) gf_val(wx++, wx += G_DIALOG_GROUP_SPACE);
		ww += wx;
		texts++;
		item++;
	}
	if (ww > *w) *w = ww;
}

void min_group_width(struct terminal *term, unsigned char * const *texts, struct dialog_item_data *item, int n, int *w)
{
	if (term->spec->braille) *w = term->x;
	while (n--) {
		int wx = item->item->type == D_CHECKBOX ? gf_val(4, txtlen(term, cast_uchar(G_DIALOG_CHECKBOX_L G_DIALOG_CHECKBOX_X G_DIALOG_CHECKBOX_R)) + G_DIALOG_CHECKBOX_SPACE) :
			item->item->type == D_BUTTON ? txtlen(term, get_text_translation(item->item->text, term)) + (gf_val(4, txtlen(term, cast_uchar(G_DIALOG_BUTTON_L G_DIALOG_BUTTON_R)))) :
			gf_val(item->item->dlen + 1, (item->item->dlen + 1) * G_DIALOG_FIELD_WIDTH);
		wx += txtlen(term, get_text_translation(texts[0], term));
		if (wx > *w) *w = wx;
		texts++;
		item++;
	}
}

void dlg_format_group(struct dialog_data *dlg, struct terminal *term, unsigned char * const *texts, struct dialog_item_data *item, int n, int x, int *y, int w, int *rw)
{
	int f = 1;
	int nx = 0;
	if (dlg->win->term->spec->braille) w = dlg->win->term->x;
	while (n--) {
		int wx = item->item->type == D_CHECKBOX ? gf_val(3, txtlen(dlg->win->term, cast_uchar(G_DIALOG_CHECKBOX_L G_DIALOG_CHECKBOX_X G_DIALOG_CHECKBOX_R))) :
			item->item->type == D_BUTTON ? txtlen(dlg->win->term, get_text_translation(item->item->text, dlg->win->term)) + (gf_val(4, txtlen(dlg->win->term, cast_uchar(G_DIALOG_BUTTON_L G_DIALOG_BUTTON_R)))) :
			gf_val(item->item->dlen, item->item->dlen * G_DIALOG_FIELD_WIDTH);
		int sl;
		if (get_text_translation(texts[0], dlg->win->term)[0]) sl = txtlen(dlg->win->term, get_text_translation(texts[0], dlg->win->term)) + gf_val(1, G_DIALOG_GROUP_TEXT_SPACE);
		else sl = 0;
		wx += sl;
		if (dlg->win->term->spec->braille) {
			if (!f) {
				nx = 0;
				(*y) += LL;
			} else f = 0;
		} else if (nx && nx + wx > w) {
			nx = 0;
			(*y) += 2 * LL;
		}
		if (term) {
			if (!F) print_text(term, x + nx + 4 * (item->item->type == D_CHECKBOX), *y, ttxtlen(term, get_text_translation(texts[0], dlg->win->term)), get_text_translation(texts[0], dlg->win->term), COLOR_DIALOG_TEXT);
#ifdef G
			else {
				int l, ll;
				l = ll = x + nx + (item->item->type == D_CHECKBOX ? txtlen(dlg->win->term, cast_uchar(G_DIALOG_CHECKBOX_L G_DIALOG_CHECKBOX_X G_DIALOG_CHECKBOX_R)) + G_DIALOG_GROUP_TEXT_SPACE : 0);
				g_print_text(term->dev, ll, *y, bfu_style_bw, get_text_translation(texts[0], dlg->win->term), &ll);
				exclude_from_set(&dlg->s, l, *y, ll, *y + G_BFU_FONT_SIZE);
			}
#endif
			item->x = x + nx + sl * (item->item->type != D_CHECKBOX);
			item->y = *y;
			if (item->item->type == D_FIELD || item->item->type == D_FIELD_PASS) item->l = gf_val(item->item->dlen, item->item->dlen * G_DIALOG_FIELD_WIDTH);
		}
		if (rw && nx + wx > *rw) if ((*rw = nx + wx) > w) *rw = w;
		nx += wx + gf_val(1, G_DIALOG_GROUP_SPACE);
		texts++;
		item++;
	}
	(*y) += LL;
}

void checkbox_list_fn(struct dialog_data *dlg)
{
	struct terminal *term = dlg->win->term;
	int n_checkboxes;
	int max = 0, min = 0;
	int w, rw;
	int y = 0;
	for (n_checkboxes = 0; ((unsigned char **)dlg->dlg->udata)[n_checkboxes]; n_checkboxes++)
		;
	checkboxes_width(term, dlg->dlg->udata, n_checkboxes, &max, max_text_width);
	checkboxes_width(term, dlg->dlg->udata, n_checkboxes, &min, min_text_width);
	max_buttons_width(term, dlg->items + n_checkboxes, dlg->n - n_checkboxes, &max);
	min_buttons_width(term, dlg->items + n_checkboxes, dlg->n - n_checkboxes, &min);
	w = term->x * 9 / 10 - 2 * DIALOG_LB;
	if (w > max) w = max;
	if (w < min) w = min;
	if (w > term->x - 2 * DIALOG_LB) w = term->x - 2 * DIALOG_LB;
	if (w < 5) w = 5;
	rw = 0;
	dlg_format_checkboxes(dlg, NULL, dlg->items, n_checkboxes, 0, &y, w, &rw, dlg->dlg->udata);
	y += LL;
	dlg_format_buttons(dlg, NULL, dlg->items + n_checkboxes, dlg->n - n_checkboxes, 0, &y, w, &rw, AL_CENTER);
	w = rw;
	dlg->xw = rw + 2 * DIALOG_LB;
	dlg->yw = y + 2 * DIALOG_TB;
	center_dlg(dlg);
	draw_dlg(dlg);
	y = dlg->y + DIALOG_TB + LL;
	dlg_format_checkboxes(dlg, term, dlg->items, n_checkboxes, dlg->x + DIALOG_LB, &y, w, NULL, dlg->dlg->udata);
	y += LL;
	dlg_format_buttons(dlg, term, dlg->items + n_checkboxes, dlg->n - n_checkboxes, dlg->x + DIALOG_LB, &y, w, &rw, AL_CENTER);
}

void group_fn(struct dialog_data *dlg)
{
	struct terminal *term = dlg->win->term;
	int max = 0, min = 0;
	int w, rw;
	int y = 0;
	max_group_width(term, dlg->dlg->udata, dlg->items, dlg->n - 2, &max);
	min_group_width(term, dlg->dlg->udata, dlg->items, dlg->n - 2, &min);
	max_buttons_width(term, dlg->items + dlg->n - 2, 2, &max);
	min_buttons_width(term, dlg->items + dlg->n - 2, 2, &min);
	w = term->x * 9 / 10 - 2 * DIALOG_LB;
	if (w > max) w = max;
	if (w < min) w = min;
	if (w > term->x - 2 * DIALOG_LB) w = term->x - 2 * DIALOG_LB;
	if (w < 1) w = 1;
	rw = 0;
	dlg_format_group(dlg, NULL, dlg->dlg->udata, dlg->items, dlg->n - 2, 0, &y, w, &rw);
	y += LL;
	dlg_format_buttons(dlg, NULL, dlg->items + dlg->n - 2, 2, 0, &y, w, &rw, AL_CENTER);
	w = rw;
	dlg->xw = rw + 2 * DIALOG_LB;
	dlg->yw = y + 2 * DIALOG_TB;
	center_dlg(dlg);
	draw_dlg(dlg);
	y = dlg->y + DIALOG_TB + LL;
	dlg_format_group(dlg, term, dlg->dlg->udata, dlg->items, dlg->n - 2, dlg->x + DIALOG_LB, &y, w, NULL);
	y += LL;
	dlg_format_buttons(dlg, term, dlg->items + dlg->n - 2, 2, dlg->x + DIALOG_LB, &y, w, &rw, AL_CENTER);
}

void msg_box_fn(struct dialog_data *dlg)
{
	struct terminal *term = dlg->win->term;
	int max = 0, min = 0;
	int w, rw;
	int y = 0;
	unsigned char **ptr;
	unsigned char *text = init_str();
	int textl = 0;
	for (ptr = dlg->dlg->udata; *ptr; ptr++) add_to_str(&text, &textl, get_text_translation(*ptr, term));
	max_text_width(term, text, &max, dlg->dlg->align);
	min_text_width(term, text, &min, dlg->dlg->align);
	max_buttons_width(term, dlg->items, dlg->n, &max);
	min_buttons_width(term, dlg->items, dlg->n, &min);
	w = term->x * 9 / 10 - 2 * DIALOG_LB;
	if (w > max) w = max;
	if (w < min) w = min;
	if (w > term->x - 2 * DIALOG_LB) w = term->x - 2 * DIALOG_LB;
	if (w < 1) w = 1;
	rw = 0;
	dlg_format_text(dlg, NULL, text, 0, &y, w, &rw, COLOR_DIALOG_TEXT, dlg->dlg->align);
	y += LL;
	dlg_format_buttons(dlg, NULL, dlg->items, dlg->n, 0, &y, w, &rw, AL_CENTER);
	w = rw;
	dlg->xw = rw + 2 * DIALOG_LB;
	dlg->yw = y + 2 * DIALOG_TB;
	center_dlg(dlg);
	draw_dlg(dlg);
	y = dlg->y + DIALOG_TB + LL;
	dlg_format_text(dlg, term, text, dlg->x + DIALOG_LB, &y, w, NULL, COLOR_DIALOG_TEXT, dlg->dlg->align);
	y += LL;
	dlg_format_buttons(dlg, term, dlg->items, dlg->n, dlg->x + DIALOG_LB, &y, w, NULL, AL_CENTER);
	mem_free(text);
}

static int msg_box_button(struct dialog_data *dlg, struct dialog_item_data *di)
{
	msg_button_fn msg_fn = di->item->u.msg_fn;
	void *data = dlg->dlg->udata2;
	msg_fn(data);
	cancel_dialog(dlg, di);
	return 0;
}

void msg_box_null(void *data)
{
}

/* coverity[+free : arg-1] */
void msg_box(struct terminal *term, struct memory_list *ml, unsigned char *title, int align, /*unsigned char *text, ..., void *data, int n,*/ ...)
{
	struct dialog *dlg;
	int i;
	int n;
	unsigned char *text;
	unsigned char **udata;
	void *udata2;
	int udatan;
	va_list ap;
	va_start(ap, align);
	udata = DUMMY;
	udatan = 0;
	do {
		text = va_arg(ap, unsigned char *);
		udatan++;
		if ((unsigned)udatan > MAXINT / sizeof(unsigned char *)) overalloc();
		udata = mem_realloc(udata, udatan * sizeof(unsigned char *));
		udata[udatan - 1] = text;
	} while (text);
	udata2 = va_arg(ap, void *);
	n = va_arg(ap, int);
	if ((unsigned)n > (MAXINT - sizeof(struct dialog)) / sizeof(struct dialog_item) - 1) overalloc();
	dlg = mem_calloc(sizeof(struct dialog) + (n + 1) * sizeof(struct dialog_item));
	dlg->title = title;
	dlg->fn = msg_box_fn;
	dlg->udata = udata;
	dlg->udata2 = udata2;
	dlg->align = align;
	for (i = 0; i < n; i++) {
		unsigned char *m;
		msg_button_fn msg_fn;
		int flags;
		m = va_arg(ap, unsigned char *);
		msg_fn = va_arg(ap, msg_button_fn);
		flags = va_arg(ap, int);
		if (!m) {
			i--, n--;
			continue;
		}
		dlg->items[i].type = D_BUTTON;
		dlg->items[i].gid = flags;
		dlg->items[i].fn = msg_box_button;
		dlg->items[i].dlen = 0;
		dlg->items[i].text = m;
		dlg->items[i].u.msg_fn = msg_fn;
	}
	va_end(ap);
	dlg->items[i].type = D_END;
	add_to_ml(&ml, dlg, udata, NULL);
	do_dialog(term, dlg, ml);
}

void add_to_history(struct terminal *term, struct history *h, unsigned char *t)
{
	unsigned char *s;
	struct history_item *hi, *hs;
	struct list_head *lhs;
	size_t l;
	if (!h || !t || !*t) return;
	if (term) {
		s = convert(term_charset(term), utf8_table, t, NULL);
	} else {
		s = t;
	}
	l = strlen(cast_const_char s);
	if (l > MAXINT - sizeof(struct history_item)) overalloc();
	hi = mem_alloc(sizeof(struct history_item) + l);
	memcpy(hi->str, s, l + 1);
	if (term)
		mem_free(s);
	if (term) foreach(struct history_item, hs, lhs, h->items) if (!strcmp(cast_const_char hs->str, cast_const_char hi->str)) {
		lhs = lhs->prev;
		del_from_list(hs);
		mem_free(hs);
		h->n--;
	}
	add_to_list(h->items, hi);
	h->n++;
	while (h->n > MAX_HISTORY_ITEMS) {
		struct history_item *hd;
		if (list_empty(h->items)) {
			internal_error("history is empty");
			h->n = 0;
			return;
		}
		hd = list_struct(h->items.prev, struct history_item);
		del_from_list(hd);
		mem_free(hd);
		h->n--;
	}
}

static int input_field_cancel(struct dialog_data *dlg, struct dialog_item_data *di)
{
	input_field_button_fn fn = di->item->u.input_fn;
	void *data = dlg->dlg->udata2;
	unsigned char *text = dlg->items->cdata;
	fn(data, text);
	cancel_dialog(dlg, di);
	return 0;
}

static int input_field_ok(struct dialog_data *dlg, struct dialog_item_data *di)
{
	input_field_button_fn fn = di->item->u.input_fn;
	void *data = dlg->dlg->udata2;
	unsigned char *text = dlg->items->cdata;
	if (check_dialog(dlg)) return 1;
	add_to_history(dlg->win->term, dlg->dlg->items->history, text);
	fn(data, text);
	ok_dialog(dlg, di);
	return 0;
}

static void input_field_fn(struct dialog_data *dlg)
{
	struct terminal *term = dlg->win->term;
	int max = 0, min = 0;
	int w, rw;
	int y = gf_val(-1, -G_BFU_FONT_SIZE);
	if (dlg->win->term->spec->braille) y += LL;
	max_text_width(term, dlg->dlg->udata, &max, AL_LEFT);
	min_text_width(term, dlg->dlg->udata, &min, AL_LEFT);
	max_buttons_width(term, dlg->items + 1, dlg->n - 1, &max);
	min_buttons_width(term, dlg->items + 1, dlg->n - 1, &min);
	if (max < dlg->dlg->items->dlen) max = dlg->dlg->items->dlen;
	w = term->x * 9 / 10 - 2 * DIALOG_LB;
	if (w > max) w = max;
	if (w < min) w = min;
	rw = w;
	dlg_format_text_and_field(dlg, NULL, dlg->dlg->udata, dlg->items, 0, &y, w, &rw, COLOR_DIALOG_TEXT, AL_LEFT);
	y += LL;
	dlg_format_buttons(dlg, NULL, dlg->items + 1, dlg->n - 1, 0, &y, w, &rw, AL_CENTER);
	w = rw;
	dlg->xw = rw + 2 * DIALOG_LB;
	dlg->yw = y + 2 * DIALOG_TB;
	center_dlg(dlg);
	draw_dlg(dlg);
	y = dlg->y + DIALOG_TB;
	if (dlg->win->term->spec->braille) y += LL;
	dlg_format_text_and_field(dlg, term, dlg->dlg->udata, dlg->items, dlg->x + DIALOG_LB, &y, w, NULL, COLOR_DIALOG_TEXT, AL_LEFT);
	y += LL;
	dlg_format_buttons(dlg, term, dlg->items + 1, dlg->n - 1, dlg->x + DIALOG_LB, &y, w, NULL, AL_CENTER);
}

void input_field_null(void *d_, unsigned char *s_)
{
}

/* coverity[+free : arg-1] */
void input_field(struct terminal *term, struct memory_list *ml, unsigned char *title, unsigned char *text, void *data, struct history *history, int l, unsigned char *def, int min, int max, int (*check)(struct dialog_data *, struct dialog_item_data *), int n, ...)
{
	struct dialog *dlg;
	unsigned char *field;
	va_list va;
	int i;
	if ((unsigned)n > MAXINT / sizeof(struct dialog_item) - 2) overalloc();
	if ((unsigned)l > MAXINT - sizeof(struct dialog) - (2 + n) * sizeof(struct dialog_item)) overalloc();
	dlg = mem_calloc(sizeof(struct dialog) + (2 + n) * sizeof(struct dialog_item) + l);
	*(field = (unsigned char *)dlg + sizeof(struct dialog) + (2 + n) * sizeof(struct dialog_item)) = 0;
	if (def) {
		if (strlen(cast_const_char def) + 1 > (size_t)l) memcpy(field, def, l - 1);
		else strcpy(cast_char field, cast_const_char def);
	}
	dlg->title = title;
	dlg->fn = input_field_fn;
	dlg->udata = text;
	dlg->udata2 = data;
	dlg->items[0].type = D_FIELD;
	dlg->items[0].gid = min;
	dlg->items[0].gnum = max;
	dlg->items[0].fn = check;
	dlg->items[0].history = history;
	dlg->items[0].dlen = l;
	dlg->items[0].data = field;
	va_start(va, n);
	for (i = 1; i <= n; i++) {
		dlg->items[i].type = D_BUTTON;
		dlg->items[i].gid = i == 1 ? B_ENTER : i == n ? B_ESC : 0;
		dlg->items[i].fn = i != n || n == 1 ? input_field_ok : input_field_cancel;
		dlg->items[i].dlen = 0;
		dlg->items[i].text = va_arg(va, unsigned char *);
		dlg->items[i].u.input_fn = va_arg(va, input_field_button_fn);
	}
	va_end(va);

	dlg->items[i].type = D_END;
	add_to_ml(&ml, dlg, NULL);
	do_dialog(term, dlg, ml);
}

int find_msg_box(struct terminal *term, unsigned char *title, int (*sel)(void *, void *), void *data)
{
	struct window *win;
	struct list_head *lwin;
	foreach(struct window, win, lwin, term->windows) if (win->handler == dialog_func) {
		struct dialog_data *dd = win->data;
		struct dialog *d = dd->dlg;
		if (d->fn != msg_box_fn)
			continue;
		if (d->title == title) {
			if (sel && !sel(data, d->udata2))
				continue;
			return 1;
		}
	}
	return 0;
}
