[linux-block.git] / scripts / kconfig / lxdialog / util.c

// SPDX-License-Identifier: GPL-2.0+
/*
 *  util.c
 *
 *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
 *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
 */

#include <stdarg.h>

#include "dialog.h"

/* Needed in signal handler in mconf.c */
int saved_x, saved_y;

struct dialog_info dlg;

static void set_mono_theme(void)
{
	dlg.title.atr = A_BOLD;
	dlg.button_active.atr = A_REVERSE;
	dlg.button_inactive.atr = A_DIM;
	dlg.button_key_active.atr = A_REVERSE;
	dlg.button_key_inactive.atr = A_BOLD;
	dlg.button_label_active.atr = A_REVERSE;
	dlg.position_indicator.atr = A_BOLD;
	dlg.item_selected.atr = A_REVERSE;
	dlg.tag.atr = A_BOLD;
	dlg.tag_selected.atr = A_REVERSE;
	dlg.tag_key.atr = A_BOLD;
	dlg.tag_key_selected.atr = A_REVERSE;
	dlg.check.atr = A_BOLD;
	dlg.check_selected.atr = A_REVERSE;
	dlg.uarrow.atr = A_BOLD;
	dlg.darrow.atr = A_BOLD;
}

#define DLG_COLOR(dialog, f, b, h) \
do {                               \
	dlg.dialog.fg = (f);       \
	dlg.dialog.bg = (b);       \
	dlg.dialog.hl = (h);       \
} while (0)

static void set_classic_theme(void)
{
	DLG_COLOR(screen,                COLOR_CYAN,   COLOR_BLUE,   true);
	DLG_COLOR(shadow,                COLOR_BLACK,  COLOR_BLACK,  true);
	DLG_COLOR(dialog,                COLOR_BLACK,  COLOR_WHITE,  false);
	DLG_COLOR(title,                 COLOR_YELLOW, COLOR_WHITE,  true);
	DLG_COLOR(border,                COLOR_WHITE,  COLOR_WHITE,  true);
	DLG_COLOR(button_active,         COLOR_WHITE,  COLOR_BLUE,   true);
	DLG_COLOR(button_inactive,       COLOR_BLACK,  COLOR_WHITE,  false);
	DLG_COLOR(button_key_active,     COLOR_WHITE,  COLOR_BLUE,   true);
	DLG_COLOR(button_key_inactive,   COLOR_RED,    COLOR_WHITE,  false);
	DLG_COLOR(button_label_active,   COLOR_YELLOW, COLOR_BLUE,   true);
	DLG_COLOR(button_label_inactive, COLOR_BLACK,  COLOR_WHITE,  true);
	DLG_COLOR(inputbox,              COLOR_BLACK,  COLOR_WHITE,  false);
	DLG_COLOR(position_indicator,    COLOR_YELLOW, COLOR_WHITE,  true);
	DLG_COLOR(menubox,               COLOR_BLACK,  COLOR_WHITE,  false);
	DLG_COLOR(menubox_border,        COLOR_WHITE,  COLOR_WHITE,  true);
	DLG_COLOR(item,                  COLOR_BLACK,  COLOR_WHITE,  false);
	DLG_COLOR(item_selected,         COLOR_WHITE,  COLOR_BLUE,   true);
	DLG_COLOR(tag,                   COLOR_YELLOW, COLOR_WHITE,  true);
	DLG_COLOR(tag_selected,          COLOR_YELLOW, COLOR_BLUE,   true);
	DLG_COLOR(tag_key,               COLOR_YELLOW, COLOR_WHITE,  true);
	DLG_COLOR(tag_key_selected,      COLOR_YELLOW, COLOR_BLUE,   true);
	DLG_COLOR(check,                 COLOR_BLACK,  COLOR_WHITE,  false);
	DLG_COLOR(check_selected,        COLOR_WHITE,  COLOR_BLUE,   true);
	DLG_COLOR(uarrow,                COLOR_GREEN,  COLOR_WHITE,  true);
	DLG_COLOR(darrow,                COLOR_GREEN,  COLOR_WHITE,  true);
}

static void set_blackbg_theme(void)
{
	DLG_COLOR(screen, COLOR_RED,   COLOR_BLACK, true);
	DLG_COLOR(shadow, COLOR_BLACK, COLOR_BLACK, false);
	DLG_COLOR(dialog, COLOR_WHITE, COLOR_BLACK, false);
	DLG_COLOR(title,  COLOR_RED,   COLOR_BLACK, false);
	DLG_COLOR(border, COLOR_BLACK, COLOR_BLACK, true);

	DLG_COLOR(button_active,         COLOR_YELLOW, COLOR_RED,   false);
	DLG_COLOR(button_inactive,       COLOR_YELLOW, COLOR_BLACK, false);
	DLG_COLOR(button_key_active,     COLOR_YELLOW, COLOR_RED,   true);
	DLG_COLOR(button_key_inactive,   COLOR_RED,    COLOR_BLACK, false);
	DLG_COLOR(button_label_active,   COLOR_WHITE,  COLOR_RED,   false);
	DLG_COLOR(button_label_inactive, COLOR_WHITE,  COLOR_BLACK, false);

	DLG_COLOR(inputbox,         COLOR_YELLOW, COLOR_BLACK, false);

	DLG_COLOR(position_indicator, COLOR_RED, COLOR_BLACK,  false);

	DLG_COLOR(menubox,          COLOR_YELLOW, COLOR_BLACK, false);
	DLG_COLOR(menubox_border,   COLOR_BLACK,  COLOR_BLACK, true);

	DLG_COLOR(item,             COLOR_WHITE, COLOR_BLACK, false);
	DLG_COLOR(item_selected,    COLOR_WHITE, COLOR_RED,   false);

	DLG_COLOR(tag,              COLOR_RED,    COLOR_BLACK, false);
	DLG_COLOR(tag_selected,     COLOR_YELLOW, COLOR_RED,   true);
	DLG_COLOR(tag_key,          COLOR_RED,    COLOR_BLACK, false);
	DLG_COLOR(tag_key_selected, COLOR_YELLOW, COLOR_RED,   true);

	DLG_COLOR(check,            COLOR_YELLOW, COLOR_BLACK, false);
	DLG_COLOR(check_selected,   COLOR_YELLOW, COLOR_RED,   true);

	DLG_COLOR(uarrow, COLOR_RED, COLOR_BLACK, false);
	DLG_COLOR(darrow, COLOR_RED, COLOR_BLACK, false);
}

static void set_bluetitle_theme(void)
{
	set_classic_theme();
	DLG_COLOR(title,               COLOR_BLUE,   COLOR_WHITE, true);
	DLG_COLOR(button_key_active,   COLOR_YELLOW, COLOR_BLUE,  true);
	DLG_COLOR(button_label_active, COLOR_WHITE,  COLOR_BLUE,  true);
	DLG_COLOR(position_indicator,  COLOR_BLUE,   COLOR_WHITE, true);
	DLG_COLOR(tag,                 COLOR_BLUE,   COLOR_WHITE, true);
	DLG_COLOR(tag_key,             COLOR_BLUE,   COLOR_WHITE, true);

}

/*
 * Select color theme
 */
static int set_theme(const char *theme)
{
	int use_color = 1;
	if (!theme)
		set_bluetitle_theme();
	else if (strcmp(theme, "classic") == 0)
		set_classic_theme();
	else if (strcmp(theme, "bluetitle") == 0)
		set_bluetitle_theme();
	else if (strcmp(theme, "blackbg") == 0)
		set_blackbg_theme();
	else if (strcmp(theme, "mono") == 0)
		use_color = 0;

	return use_color;
}

static void init_one_color(struct dialog_color *color)
{
	static int pair = 0;

	pair++;
	init_pair(pair, color->fg, color->bg);
	if (color->hl)
		color->atr = A_BOLD | COLOR_PAIR(pair);
	else
		color->atr = COLOR_PAIR(pair);
}

static void init_dialog_colors(void)
{
	init_one_color(&dlg.screen);
	init_one_color(&dlg.shadow);
	init_one_color(&dlg.dialog);
	init_one_color(&dlg.title);
	init_one_color(&dlg.border);
	init_one_color(&dlg.button_active);
	init_one_color(&dlg.button_inactive);
	init_one_color(&dlg.button_key_active);
	init_one_color(&dlg.button_key_inactive);
	init_one_color(&dlg.button_label_active);
	init_one_color(&dlg.button_label_inactive);
	init_one_color(&dlg.inputbox);
	init_one_color(&dlg.position_indicator);
	init_one_color(&dlg.menubox);
	init_one_color(&dlg.menubox_border);
	init_one_color(&dlg.item);
	init_one_color(&dlg.item_selected);
	init_one_color(&dlg.tag);
	init_one_color(&dlg.tag_selected);
	init_one_color(&dlg.tag_key);
	init_one_color(&dlg.tag_key_selected);
	init_one_color(&dlg.check);
	init_one_color(&dlg.check_selected);
	init_one_color(&dlg.uarrow);
	init_one_color(&dlg.darrow);
}

/*
 * Setup for color display
 */
static void color_setup(const char *theme)
{
	int use_color;

	use_color = set_theme(theme);
	if (use_color && has_colors()) {
		start_color();
		init_dialog_colors();
	} else
		set_mono_theme();
}

/*
 * Set window to attribute 'attr'
 */
void attr_clear(WINDOW * win, int height, int width, chtype attr)
{
	int i, j;

	wattrset(win, attr);
	for (i = 0; i < height; i++) {
		wmove(win, i, 0);
		for (j = 0; j < width; j++)
			waddch(win, ' ');
	}
	touchwin(win);
}

void dialog_clear(void)
{
	int lines, columns;

	lines = getmaxy(stdscr);
	columns = getmaxx(stdscr);

	attr_clear(stdscr, lines, columns, dlg.screen.atr);
	/* Display background title if it exists ... - SLH */
	if (dlg.backtitle != NULL) {
		int i, len = 0, skip = 0;
		struct subtitle_list *pos;

		wattrset(stdscr, dlg.screen.atr);
		mvwaddstr(stdscr, 0, 1, (char *)dlg.backtitle);

		for (pos = dlg.subtitles; pos != NULL; pos = pos->next) {
			/* 3 is for the arrow and spaces */
			len += strlen(pos->text) + 3;
		}

		wmove(stdscr, 1, 1);
		if (len > columns - 2) {
			const char *ellipsis = "[...] ";
			waddstr(stdscr, ellipsis);
			skip = len - (columns - 2 - strlen(ellipsis));
		}

		for (pos = dlg.subtitles; pos != NULL; pos = pos->next) {
			if (skip == 0)
				waddch(stdscr, ACS_RARROW);
			else
				skip--;

			if (skip == 0)
				waddch(stdscr, ' ');
			else
				skip--;

			if (skip < strlen(pos->text)) {
				waddstr(stdscr, pos->text + skip);
				skip = 0;
			} else
				skip -= strlen(pos->text);

			if (skip == 0)
				waddch(stdscr, ' ');
			else
				skip--;
		}

		for (i = len + 1; i < columns - 1; i++)
			waddch(stdscr, ACS_HLINE);
	}
	wnoutrefresh(stdscr);
}

/*
 * Do some initialization for dialog
 */
int init_dialog(const char *backtitle)
{
	int height, width;

	initscr();		/* Init curses */

	/* Get current cursor position for signal handler in mconf.c */
	getyx(stdscr, saved_y, saved_x);

	getmaxyx(stdscr, height, width);
	if (height < WINDOW_HEIGHT_MIN || width < WINDOW_WIDTH_MIN) {
		endwin();
		return -ERRDISPLAYTOOSMALL;
	}

	dlg.backtitle = backtitle;
	color_setup(getenv("MENUCONFIG_COLOR"));

	keypad(stdscr, TRUE);
	cbreak();
	noecho();
	dialog_clear();

	return 0;
}

void set_dialog_backtitle(const char *backtitle)
{
	dlg.backtitle = backtitle;
}

void set_dialog_subtitles(struct subtitle_list *subtitles)
{
	dlg.subtitles = subtitles;
}

/*
 * End using dialog functions.
 */
void end_dialog(int x, int y)
{
	/* move cursor back to original position */
	move(y, x);
	refresh();
	endwin();
}

/* Print the title of the dialog. Center the title and truncate
 * tile if wider than dialog (- 2 chars).
 **/
void print_title(WINDOW *dialog, const char *title, int width)
{
	if (title) {
		int tlen = MIN(width - 2, strlen(title));
		wattrset(dialog, dlg.title.atr);
		mvwaddch(dialog, 0, (width - tlen) / 2 - 1, ' ');
		mvwaddnstr(dialog, 0, (width - tlen)/2, title, tlen);
		waddch(dialog, ' ');
	}
}

/*
 * Print a string of text in a window, automatically wrap around to the
 * next line if the string is too long to fit on one line. Newline
 * characters '\n' are properly processed.  We start on a new line
 * if there is no room for at least 4 nonblanks following a double-space.
 */
void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x)
{
	int newl, cur_x, cur_y;
	int prompt_len, room, wlen;
	char tempstr[MAX_LEN + 1], *word, *sp, *sp2, *newline_separator = 0;

	strcpy(tempstr, prompt);

	prompt_len = strlen(tempstr);

	if (prompt_len <= width - x * 2) {	/* If prompt is short */
		wmove(win, y, (width - prompt_len) / 2);
		waddstr(win, tempstr);
	} else {
		cur_x = x;
		cur_y = y;
		newl = 1;
		word = tempstr;
		while (word && *word) {
			sp = strpbrk(word, "\n ");
			if (sp && *sp == '\n')
				newline_separator = sp;

			if (sp)
				*sp++ = 0;

			/* Wrap to next line if either the word does not fit,
			   or it is the first word of a new sentence, and it is
			   short, and the next word does not fit. */
			room = width - cur_x;
			wlen = strlen(word);
			if (wlen > room ||
			    (newl && wlen < 4 && sp
			     && wlen + 1 + strlen(sp) > room
			     && (!(sp2 = strpbrk(sp, "\n "))
				 || wlen + 1 + (sp2 - sp) > room))) {
				cur_y++;
				cur_x = x;
			}
			wmove(win, cur_y, cur_x);
			waddstr(win, word);
			getyx(win, cur_y, cur_x);

			/* Move to the next line if the word separator was a newline */
			if (newline_separator) {
				cur_y++;
				cur_x = x;
				newline_separator = 0;
			} else
				cur_x++;

			if (sp && *sp == ' ') {
				cur_x++;	/* double space */
				while (*++sp == ' ') ;
				newl = 1;
			} else
				newl = 0;
			word = sp;
		}
	}
}

/*
 * Print a button
 */
void print_button(WINDOW * win, const char *label, int y, int x, int selected)
{
	int i, temp;

	wmove(win, y, x);
	wattrset(win, selected ? dlg.button_active.atr
		 : dlg.button_inactive.atr);
	waddstr(win, "<");
	temp = strspn(label, " ");
	label += temp;
	wattrset(win, selected ? dlg.button_label_active.atr
		 : dlg.button_label_inactive.atr);
	for (i = 0; i < temp; i++)
		waddch(win, ' ');
	wattrset(win, selected ? dlg.button_key_active.atr
		 : dlg.button_key_inactive.atr);
	waddch(win, label[0]);
	wattrset(win, selected ? dlg.button_label_active.atr
		 : dlg.button_label_inactive.atr);
	waddstr(win, (char *)label + 1);
	wattrset(win, selected ? dlg.button_active.atr
		 : dlg.button_inactive.atr);
	waddstr(win, ">");
	wmove(win, y, x + temp + 1);
}

/*
 * Draw a rectangular box with line drawing characters
 */
void
draw_box(WINDOW * win, int y, int x, int height, int width,
	 chtype box, chtype border)
{
	int i, j;

	wattrset(win, 0);
	for (i = 0; i < height; i++) {
		wmove(win, y + i, x);
		for (j = 0; j < width; j++)
			if (!i && !j)
				waddch(win, border | ACS_ULCORNER);
			else if (i == height - 1 && !j)
				waddch(win, border | ACS_LLCORNER);
			else if (!i && j == width - 1)
				waddch(win, box | ACS_URCORNER);
			else if (i == height - 1 && j == width - 1)
				waddch(win, box | ACS_LRCORNER);
			else if (!i)
				waddch(win, border | ACS_HLINE);
			else if (i == height - 1)
				waddch(win, box | ACS_HLINE);
			else if (!j)
				waddch(win, border | ACS_VLINE);
			else if (j == width - 1)
				waddch(win, box | ACS_VLINE);
			else
				waddch(win, box | ' ');
	}
}

/*
 * Draw shadows along the right and bottom edge to give a more 3D look
 * to the boxes
 */
void draw_shadow(WINDOW * win, int y, int x, int height, int width)
{
	int i;

	if (has_colors()) {	/* Whether terminal supports color? */
		wattrset(win, dlg.shadow.atr);
		wmove(win, y + height, x + 2);
		for (i = 0; i < width; i++)
			waddch(win, winch(win) & A_CHARTEXT);
		for (i = y + 1; i < y + height + 1; i++) {
			wmove(win, i, x + width);
			waddch(win, winch(win) & A_CHARTEXT);
			waddch(win, winch(win) & A_CHARTEXT);
		}
		wnoutrefresh(win);
	}
}

/*
 *  Return the position of the first alphabetic character in a string.
 */
int first_alpha(const char *string, const char *exempt)
{
	int i, in_paren = 0, c;

	for (i = 0; i < strlen(string); i++) {
		c = tolower(string[i]);

		if (strchr("<[(", c))
			++in_paren;
		if (strchr(">])", c) && in_paren > 0)
			--in_paren;

		if ((!in_paren) && isalpha(c) && strchr(exempt, c) == 0)
			return i;
	}

	return 0;
}

/*
 * ncurses uses ESC to detect escaped char sequences. This resutl in
 * a small timeout before ESC is actually delivered to the application.
 * lxdialog suggest <ESC> <ESC> which is correctly translated to two
 * times esc. But then we need to ignore the second esc to avoid stepping
 * out one menu too much. Filter away all escaped key sequences since
 * keypad(FALSE) turn off ncurses support for escape sequences - and that's
 * needed to make notimeout() do as expected.
 */
int on_key_esc(WINDOW *win)
{
	int key;
	int key2;
	int key3;

	nodelay(win, TRUE);
	keypad(win, FALSE);
	key = wgetch(win);
	key2 = wgetch(win);
	do {
		key3 = wgetch(win);
	} while (key3 != ERR);
	nodelay(win, FALSE);
	keypad(win, TRUE);
	if (key == KEY_ESC && key2 == ERR)
		return KEY_ESC;
	else if (key != ERR && key != KEY_ESC && key2 == ERR)
		ungetch(key);

	return -1;
}

/* redraw screen in new size */
int on_key_resize(void)
{
	dialog_clear();
	return KEY_RESIZE;
}

struct dialog_list *item_cur;
struct dialog_list item_nil;
struct dialog_list *item_head;

void item_reset(void)
{
	struct dialog_list *p, *next;

	for (p = item_head; p; p = next) {
		next = p->next;
		free(p);
	}
	item_head = NULL;
	item_cur = &item_nil;
}

void item_make(const char *fmt, ...)
{
	va_list ap;
	struct dialog_list *p = malloc(sizeof(*p));

	if (item_head)
		item_cur->next = p;
	else
		item_head = p;
	item_cur = p;
	memset(p, 0, sizeof(*p));

	va_start(ap, fmt);
	vsnprintf(item_cur->node.str, sizeof(item_cur->node.str), fmt, ap);
	va_end(ap);
}

void item_add_str(const char *fmt, ...)
{
	va_list ap;
	size_t avail;

	avail = sizeof(item_cur->node.str) - strlen(item_cur->node.str);

	va_start(ap, fmt);
	vsnprintf(item_cur->node.str + strlen(item_cur->node.str),
		  avail, fmt, ap);
	item_cur->node.str[sizeof(item_cur->node.str) - 1] = '\0';
	va_end(ap);
}

void item_set_tag(char tag)
{
	item_cur->node.tag = tag;
}
void item_set_data(void *ptr)
{
	item_cur->node.data = ptr;
}

void item_set_selected(int val)
{
	item_cur->node.selected = val;
}

int item_activate_selected(void)
{
	item_foreach()
		if (item_is_selected())
			return 1;
	return 0;
}

void *item_data(void)
{
	return item_cur->node.data;
}

char item_tag(void)
{
	return item_cur->node.tag;
}

int item_count(void)
{
	int n = 0;
	struct dialog_list *p;

	for (p = item_head; p; p = p->next)
		n++;
	return n;
}

void item_set(int n)
{
	int i = 0;
	item_foreach()
		if (i++ == n)
			return;
}

int item_n(void)
{
	int n = 0;
	struct dialog_list *p;

	for (p = item_head; p; p = p->next) {
		if (p == item_cur)
			return n;
		n++;
	}
	return 0;
}

const char *item_str(void)
{
	return item_cur->node.str;
}

int item_is_selected(void)
{
	return (item_cur->node.selected != 0);
}

int item_is_tag(char tag)
{
	return (item_cur->node.tag == tag);
}
Commit	Line	Data
0c874100	1	// SPDX-License-Identifier: GPL-2.0+
1da177e4 LT	2	/*
	3	* util.c
	4	*
	5	* ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
	6	* MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
1da177e4 LT	7	*/
1da177e4 LT	8
668cdedf AL	9	#include <stdarg.h>
668cdedf AL	10
1da177e4 LT	11	#include "dialog.h"
1da177e4 LT	12
3eb95c84 DG	13	/* Needed in signal handler in mconf.c */
	14	int saved_x, saved_y;
	15
98e5a157	16	struct dialog_info dlg;
1da177e4	17
98e5a157 SR	18	static void set_mono_theme(void)
98e5a157 SR	19	{
98e5a157	20	dlg.title.atr = A_BOLD;
98e5a157 SR	21	dlg.button_active.atr = A_REVERSE;
	22	dlg.button_inactive.atr = A_DIM;
	23	dlg.button_key_active.atr = A_REVERSE;
	24	dlg.button_key_inactive.atr = A_BOLD;
	25	dlg.button_label_active.atr = A_REVERSE;
98e5a157	26	dlg.position_indicator.atr = A_BOLD;
98e5a157 SR	27	dlg.item_selected.atr = A_REVERSE;
	28	dlg.tag.atr = A_BOLD;
	29	dlg.tag_selected.atr = A_REVERSE;
	30	dlg.tag_key.atr = A_BOLD;
	31	dlg.tag_key_selected.atr = A_REVERSE;
	32	dlg.check.atr = A_BOLD;
	33	dlg.check_selected.atr = A_REVERSE;
	34	dlg.uarrow.atr = A_BOLD;
	35	dlg.darrow.atr = A_BOLD;
	36	}
1da177e4	37
98e5a157 SR	38	#define DLG_COLOR(dialog, f, b, h) \
	39	do { \
	40	dlg.dialog.fg = (f); \
	41	dlg.dialog.bg = (b); \
	42	dlg.dialog.hl = (h); \
	43	} while (0)
	44
	45	static void set_classic_theme(void)
	46	{
	47	DLG_COLOR(screen, COLOR_CYAN, COLOR_BLUE, true);
	48	DLG_COLOR(shadow, COLOR_BLACK, COLOR_BLACK, true);
	49	DLG_COLOR(dialog, COLOR_BLACK, COLOR_WHITE, false);
	50	DLG_COLOR(title, COLOR_YELLOW, COLOR_WHITE, true);
	51	DLG_COLOR(border, COLOR_WHITE, COLOR_WHITE, true);
	52	DLG_COLOR(button_active, COLOR_WHITE, COLOR_BLUE, true);
	53	DLG_COLOR(button_inactive, COLOR_BLACK, COLOR_WHITE, false);
	54	DLG_COLOR(button_key_active, COLOR_WHITE, COLOR_BLUE, true);
	55	DLG_COLOR(button_key_inactive, COLOR_RED, COLOR_WHITE, false);
	56	DLG_COLOR(button_label_active, COLOR_YELLOW, COLOR_BLUE, true);
	57	DLG_COLOR(button_label_inactive, COLOR_BLACK, COLOR_WHITE, true);
	58	DLG_COLOR(inputbox, COLOR_BLACK, COLOR_WHITE, false);
98e5a157 SR	59	DLG_COLOR(position_indicator, COLOR_YELLOW, COLOR_WHITE, true);
	60	DLG_COLOR(menubox, COLOR_BLACK, COLOR_WHITE, false);
	61	DLG_COLOR(menubox_border, COLOR_WHITE, COLOR_WHITE, true);
	62	DLG_COLOR(item, COLOR_BLACK, COLOR_WHITE, false);
	63	DLG_COLOR(item_selected, COLOR_WHITE, COLOR_BLUE, true);
	64	DLG_COLOR(tag, COLOR_YELLOW, COLOR_WHITE, true);
	65	DLG_COLOR(tag_selected, COLOR_YELLOW, COLOR_BLUE, true);
	66	DLG_COLOR(tag_key, COLOR_YELLOW, COLOR_WHITE, true);
	67	DLG_COLOR(tag_key_selected, COLOR_YELLOW, COLOR_BLUE, true);
	68	DLG_COLOR(check, COLOR_BLACK, COLOR_WHITE, false);
	69	DLG_COLOR(check_selected, COLOR_WHITE, COLOR_BLUE, true);
	70	DLG_COLOR(uarrow, COLOR_GREEN, COLOR_WHITE, true);
	71	DLG_COLOR(darrow, COLOR_GREEN, COLOR_WHITE, true);
	72	}
	73
45897213 SR	74	static void set_blackbg_theme(void)
	75	{
	76	DLG_COLOR(screen, COLOR_RED, COLOR_BLACK, true);
	77	DLG_COLOR(shadow, COLOR_BLACK, COLOR_BLACK, false);
	78	DLG_COLOR(dialog, COLOR_WHITE, COLOR_BLACK, false);
	79	DLG_COLOR(title, COLOR_RED, COLOR_BLACK, false);
	80	DLG_COLOR(border, COLOR_BLACK, COLOR_BLACK, true);
	81
	82	DLG_COLOR(button_active, COLOR_YELLOW, COLOR_RED, false);
	83	DLG_COLOR(button_inactive, COLOR_YELLOW, COLOR_BLACK, false);
	84	DLG_COLOR(button_key_active, COLOR_YELLOW, COLOR_RED, true);
	85	DLG_COLOR(button_key_inactive, COLOR_RED, COLOR_BLACK, false);
	86	DLG_COLOR(button_label_active, COLOR_WHITE, COLOR_RED, false);
137bb8b8	87	DLG_COLOR(button_label_inactive, COLOR_WHITE, COLOR_BLACK, false);
45897213 SR	88
45897213 SR	89	DLG_COLOR(inputbox, COLOR_YELLOW, COLOR_BLACK, false);
45897213 SR	90
	91	DLG_COLOR(position_indicator, COLOR_RED, COLOR_BLACK, false);
	92
	93	DLG_COLOR(menubox, COLOR_YELLOW, COLOR_BLACK, false);
	94	DLG_COLOR(menubox_border, COLOR_BLACK, COLOR_BLACK, true);
	95
	96	DLG_COLOR(item, COLOR_WHITE, COLOR_BLACK, false);
	97	DLG_COLOR(item_selected, COLOR_WHITE, COLOR_RED, false);
	98
	99	DLG_COLOR(tag, COLOR_RED, COLOR_BLACK, false);
	100	DLG_COLOR(tag_selected, COLOR_YELLOW, COLOR_RED, true);
	101	DLG_COLOR(tag_key, COLOR_RED, COLOR_BLACK, false);
	102	DLG_COLOR(tag_key_selected, COLOR_YELLOW, COLOR_RED, true);
	103
	104	DLG_COLOR(check, COLOR_YELLOW, COLOR_BLACK, false);
	105	DLG_COLOR(check_selected, COLOR_YELLOW, COLOR_RED, true);
	106
	107	DLG_COLOR(uarrow, COLOR_RED, COLOR_BLACK, false);
	108	DLG_COLOR(darrow, COLOR_RED, COLOR_BLACK, false);
	109	}
	110
350b5b76 SR	111	static void set_bluetitle_theme(void)
	112	{
	113	set_classic_theme();
	114	DLG_COLOR(title, COLOR_BLUE, COLOR_WHITE, true);
	115	DLG_COLOR(button_key_active, COLOR_YELLOW, COLOR_BLUE, true);
	116	DLG_COLOR(button_label_active, COLOR_WHITE, COLOR_BLUE, true);
350b5b76 SR	117	DLG_COLOR(position_indicator, COLOR_BLUE, COLOR_WHITE, true);
	118	DLG_COLOR(tag, COLOR_BLUE, COLOR_WHITE, true);
	119	DLG_COLOR(tag_key, COLOR_BLUE, COLOR_WHITE, true);
	120
	121	}
	122
45897213 SR	123	/*
	124	* Select color theme
	125	*/
	126	static int set_theme(const char *theme)
	127	{
	128	int use_color = 1;
	129	if (!theme)
350b5b76	130	set_bluetitle_theme();
45897213 SR	131	else if (strcmp(theme, "classic") == 0)
45897213 SR	132	set_classic_theme();
350b5b76 SR	133	else if (strcmp(theme, "bluetitle") == 0)
350b5b76 SR	134	set_bluetitle_theme();
45897213 SR	135	else if (strcmp(theme, "blackbg") == 0)
	136	set_blackbg_theme();
	137	else if (strcmp(theme, "mono") == 0)
	138	use_color = 0;
	139
	140	return use_color;
	141	}
	142
98e5a157 SR	143	static void init_one_color(struct dialog_color *color)
	144	{
	145	static int pair = 0;
	146
	147	pair++;
	148	init_pair(pair, color->fg, color->bg);
	149	if (color->hl)
	150	color->atr = A_BOLD \| COLOR_PAIR(pair);
	151	else
	152	color->atr = COLOR_PAIR(pair);
	153	}
	154
	155	static void init_dialog_colors(void)
	156	{
	157	init_one_color(&dlg.screen);
	158	init_one_color(&dlg.shadow);
	159	init_one_color(&dlg.dialog);
	160	init_one_color(&dlg.title);
	161	init_one_color(&dlg.border);
	162	init_one_color(&dlg.button_active);
	163	init_one_color(&dlg.button_inactive);
	164	init_one_color(&dlg.button_key_active);
	165	init_one_color(&dlg.button_key_inactive);
	166	init_one_color(&dlg.button_label_active);
	167	init_one_color(&dlg.button_label_inactive);
	168	init_one_color(&dlg.inputbox);
98e5a157 SR	169	init_one_color(&dlg.position_indicator);
	170	init_one_color(&dlg.menubox);
	171	init_one_color(&dlg.menubox_border);
	172	init_one_color(&dlg.item);
	173	init_one_color(&dlg.item_selected);
	174	init_one_color(&dlg.tag);
	175	init_one_color(&dlg.tag_selected);
	176	init_one_color(&dlg.tag_key);
	177	init_one_color(&dlg.tag_key_selected);
	178	init_one_color(&dlg.check);
	179	init_one_color(&dlg.check_selected);
	180	init_one_color(&dlg.uarrow);
	181	init_one_color(&dlg.darrow);
	182	}
1da177e4 LT	183
1da177e4 LT	184	/*
98e5a157	185	* Setup for color display
1da177e4	186	*/
45897213	187	static void color_setup(const char *theme)
98e5a157	188	{
c154348f RZ	189	int use_color;
	190
	191	use_color = set_theme(theme);
	192	if (use_color && has_colors()) {
	193	start_color();
	194	init_dialog_colors();
	195	} else
98e5a157	196	set_mono_theme();
98e5a157	197	}
1da177e4 LT	198
	199	/*
	200	* Set window to attribute 'attr'
	201	*/
b1c5f1c6	202	void attr_clear(WINDOW * win, int height, int width, chtype attr)
1da177e4	203	{
b1c5f1c6 SR	204	int i, j;
	205
	206	wattrset(win, attr);
	207	for (i = 0; i < height; i++) {
	208	wmove(win, i, 0);
	209	for (j = 0; j < width; j++)
	210	waddch(win, ' ');
	211	}
	212	touchwin(win);
1da177e4 LT	213	}
1da177e4 LT	214
b1c5f1c6	215	void dialog_clear(void)
1da177e4	216	{
4f2de3e1 DG	217	int lines, columns;
	218
	219	lines = getmaxy(stdscr);
	220	columns = getmaxx(stdscr);
	221
	222	attr_clear(stdscr, lines, columns, dlg.screen.atr);
b1c5f1c6	223	/* Display background title if it exists ... - SLH */
98e5a157	224	if (dlg.backtitle != NULL) {
9a69abf8 BP	225	int i, len = 0, skip = 0;
9a69abf8 BP	226	struct subtitle_list *pos;
b1c5f1c6	227
98e5a157 SR	228	wattrset(stdscr, dlg.screen.atr);
98e5a157 SR	229	mvwaddstr(stdscr, 0, 1, (char *)dlg.backtitle);
9a69abf8 BP	230
	231	for (pos = dlg.subtitles; pos != NULL; pos = pos->next) {
	232	/* 3 is for the arrow and spaces */
	233	len += strlen(pos->text) + 3;
	234	}
	235
b1c5f1c6	236	wmove(stdscr, 1, 1);
4f2de3e1	237	if (len > columns - 2) {
9a69abf8 BP	238	const char *ellipsis = "[...] ";
9a69abf8 BP	239	waddstr(stdscr, ellipsis);
4f2de3e1	240	skip = len - (columns - 2 - strlen(ellipsis));
9a69abf8 BP	241	}
	242
	243	for (pos = dlg.subtitles; pos != NULL; pos = pos->next) {
	244	if (skip == 0)
	245	waddch(stdscr, ACS_RARROW);
	246	else
	247	skip--;
	248
	249	if (skip == 0)
	250	waddch(stdscr, ' ');
	251	else
	252	skip--;
	253
	254	if (skip < strlen(pos->text)) {
	255	waddstr(stdscr, pos->text + skip);
	256	skip = 0;
	257	} else
	258	skip -= strlen(pos->text);
	259
	260	if (skip == 0)
	261	waddch(stdscr, ' ');
	262	else
	263	skip--;
	264	}
	265
4f2de3e1	266	for (i = len + 1; i < columns - 1; i++)
b1c5f1c6 SR	267	waddch(stdscr, ACS_HLINE);
	268	}
	269	wnoutrefresh(stdscr);
1da177e4 LT	270	}
	271
	272	/*
	273	* Do some initialization for dialog
	274	*/
09af091f	275	int init_dialog(const char *backtitle)
2982de69	276	{
09af091f LM	277	int height, width;
	278
	279	initscr(); /* Init curses */
3eb95c84 DG	280
	281	/* Get current cursor position for signal handler in mconf.c */
	282	getyx(stdscr, saved_y, saved_x);
	283
09af091f	284	getmaxyx(stdscr, height, width);
89e5462b	285	if (height < WINDOW_HEIGHT_MIN \|\| width < WINDOW_WIDTH_MIN) {
09af091f LM	286	endwin();
	287	return -ERRDISPLAYTOOSMALL;
	288	}
2982de69	289
95e30f95	290	dlg.backtitle = backtitle;
09af091f	291	color_setup(getenv("MENUCONFIG_COLOR"));
95e30f95	292
b1c5f1c6 SR	293	keypad(stdscr, TRUE);
	294	cbreak();
	295	noecho();
b1c5f1c6	296	dialog_clear();
09af091f LM	297
	298	return 0;
	299	}
	300
	301	void set_dialog_backtitle(const char *backtitle)
	302	{
	303	dlg.backtitle = backtitle;
1da177e4 LT	304	}
1da177e4 LT	305
9a69abf8 BP	306	void set_dialog_subtitles(struct subtitle_list *subtitles)
	307	{
	308	dlg.subtitles = subtitles;
	309	}
	310
1da177e4 LT	311	/*
	312	* End using dialog functions.
	313	*/
09af091f	314	void end_dialog(int x, int y)
1da177e4	315	{
09af091f LM	316	/* move cursor back to original position */
	317	move(y, x);
	318	refresh();
b1c5f1c6	319	endwin();
1da177e4 LT	320	}
1da177e4 LT	321
fa7009d5 SR	322	/* Print the title of the dialog. Center the title and truncate
	323	* tile if wider than dialog (- 2 chars).
	324	**/
	325	void print_title(WINDOW dialog, const char title, int width)
	326	{
	327	if (title) {
	328	int tlen = MIN(width - 2, strlen(title));
98e5a157	329	wattrset(dialog, dlg.title.atr);
fa7009d5 SR	330	mvwaddch(dialog, 0, (width - tlen) / 2 - 1, ' ');
	331	mvwaddnstr(dialog, 0, (width - tlen)/2, title, tlen);
	332	waddch(dialog, ' ');
	333	}
	334	}
	335
1da177e4 LT	336	/*
	337	* Print a string of text in a window, automatically wrap around to the
	338	* next line if the string is too long to fit on one line. Newline
bffbf6e2	339	* characters '\n' are properly processed. We start on a new line
1da177e4 LT	340	* if there is no room for at least 4 nonblanks following a double-space.
1da177e4 LT	341	*/
b1c5f1c6	342	void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x)
1da177e4	343	{
b1c5f1c6	344	int newl, cur_x, cur_y;
13763916 DG	345	int prompt_len, room, wlen;
13763916 DG	346	char tempstr[MAX_LEN + 1], word, sp, sp2, newline_separator = 0;
b1c5f1c6 SR	347
	348	strcpy(tempstr, prompt);
	349
	350	prompt_len = strlen(tempstr);
	351
b1c5f1c6 SR	352	if (prompt_len <= width - x * 2) { /* If prompt is short */
	353	wmove(win, y, (width - prompt_len) / 2);
	354	waddstr(win, tempstr);
	355	} else {
1da177e4	356	cur_x = x;
b1c5f1c6	357	cur_y = y;
1da177e4	358	newl = 1;
b1c5f1c6 SR	359	word = tempstr;
b1c5f1c6 SR	360	while (word && *word) {
13763916 DG	361	sp = strpbrk(word, "\n ");
	362	if (sp && *sp == '\n')
	363	newline_separator = sp;
	364
b1c5f1c6 SR	365	if (sp)
	366	*sp++ = 0;
	367
	368	/* Wrap to next line if either the word does not fit,
	369	or it is the first word of a new sentence, and it is
	370	short, and the next word does not fit. */
	371	room = width - cur_x;
	372	wlen = strlen(word);
	373	if (wlen > room \|\|
	374	(newl && wlen < 4 && sp
	375	&& wlen + 1 + strlen(sp) > room
13763916	376	&& (!(sp2 = strpbrk(sp, "\n "))
b1c5f1c6 SR	377	\|\| wlen + 1 + (sp2 - sp) > room))) {
	378	cur_y++;
	379	cur_x = x;
	380	}
	381	wmove(win, cur_y, cur_x);
	382	waddstr(win, word);
	383	getyx(win, cur_y, cur_x);
13763916 DG	384
	385	/* Move to the next line if the word separator was a newline */
	386	if (newline_separator) {
	387	cur_y++;
	388	cur_x = x;
	389	newline_separator = 0;
	390	} else
	391	cur_x++;
	392
b1c5f1c6 SR	393	if (sp && *sp == ' ') {
	394	cur_x++; /* double space */
	395	while (*++sp == ' ') ;
	396	newl = 1;
	397	} else
	398	newl = 0;
	399	word = sp;
	400	}
1da177e4	401	}
1da177e4 LT	402	}
	403
	404	/*
	405	* Print a button
	406	*/
b1c5f1c6	407	void print_button(WINDOW * win, const char *label, int y, int x, int selected)
1da177e4	408	{
b1c5f1c6 SR	409	int i, temp;
	410
	411	wmove(win, y, x);
98e5a157 SR	412	wattrset(win, selected ? dlg.button_active.atr
98e5a157 SR	413	: dlg.button_inactive.atr);
b1c5f1c6 SR	414	waddstr(win, "<");
	415	temp = strspn(label, " ");
	416	label += temp;
98e5a157 SR	417	wattrset(win, selected ? dlg.button_label_active.atr
98e5a157 SR	418	: dlg.button_label_inactive.atr);
b1c5f1c6 SR	419	for (i = 0; i < temp; i++)
b1c5f1c6 SR	420	waddch(win, ' ');
98e5a157 SR	421	wattrset(win, selected ? dlg.button_key_active.atr
98e5a157 SR	422	: dlg.button_key_inactive.atr);
b1c5f1c6	423	waddch(win, label[0]);
98e5a157 SR	424	wattrset(win, selected ? dlg.button_label_active.atr
98e5a157 SR	425	: dlg.button_label_inactive.atr);
b1c5f1c6	426	waddstr(win, (char *)label + 1);
98e5a157 SR	427	wattrset(win, selected ? dlg.button_active.atr
98e5a157 SR	428	: dlg.button_inactive.atr);
b1c5f1c6 SR	429	waddstr(win, ">");
b1c5f1c6 SR	430	wmove(win, y, x + temp + 1);
1da177e4 LT	431	}
	432
	433	/*
	434	* Draw a rectangular box with line drawing characters
	435	*/
	436	void
b1c5f1c6 SR	437	draw_box(WINDOW * win, int y, int x, int height, int width,
b1c5f1c6 SR	438	chtype box, chtype border)
1da177e4	439	{
b1c5f1c6 SR	440	int i, j;
	441
	442	wattrset(win, 0);
	443	for (i = 0; i < height; i++) {
	444	wmove(win, y + i, x);
	445	for (j = 0; j < width; j++)
	446	if (!i && !j)
	447	waddch(win, border \| ACS_ULCORNER);
	448	else if (i == height - 1 && !j)
	449	waddch(win, border \| ACS_LLCORNER);
	450	else if (!i && j == width - 1)
	451	waddch(win, box \| ACS_URCORNER);
	452	else if (i == height - 1 && j == width - 1)
	453	waddch(win, box \| ACS_LRCORNER);
	454	else if (!i)
	455	waddch(win, border \| ACS_HLINE);
	456	else if (i == height - 1)
	457	waddch(win, box \| ACS_HLINE);
	458	else if (!j)
	459	waddch(win, border \| ACS_VLINE);
	460	else if (j == width - 1)
	461	waddch(win, box \| ACS_VLINE);
	462	else
	463	waddch(win, box \| ' ');
	464	}
1da177e4 LT	465	}
	466
	467	/*
	468	* Draw shadows along the right and bottom edge to give a more 3D look
	469	* to the boxes
	470	*/
b1c5f1c6	471	void draw_shadow(WINDOW * win, int y, int x, int height, int width)
1da177e4	472	{
b1c5f1c6 SR	473	int i;
	474
	475	if (has_colors()) { /* Whether terminal supports color? */
98e5a157	476	wattrset(win, dlg.shadow.atr);
b1c5f1c6 SR	477	wmove(win, y + height, x + 2);
	478	for (i = 0; i < width; i++)
	479	waddch(win, winch(win) & A_CHARTEXT);
	480	for (i = y + 1; i < y + height + 1; i++) {
	481	wmove(win, i, x + width);
	482	waddch(win, winch(win) & A_CHARTEXT);
	483	waddch(win, winch(win) & A_CHARTEXT);
	484	}
	485	wnoutrefresh(win);
1da177e4	486	}
1da177e4 LT	487	}
	488
	489	/*
	490	* Return the position of the first alphabetic character in a string.
	491	*/
b1c5f1c6	492	int first_alpha(const char string, const char exempt)
1da177e4	493	{
b1c5f1c6	494	int i, in_paren = 0, c;
1da177e4 LT	495
	496	for (i = 0; i < strlen(string); i++) {
	497	c = tolower(string[i]);
	498
b1c5f1c6 SR	499	if (strchr("<[(", c))
	500	++in_paren;
	501	if (strchr(">])", c) && in_paren > 0)
	502	--in_paren;
1da177e4	503
b1c5f1c6	504	if ((!in_paren) && isalpha(c) && strchr(exempt, c) == 0)
1da177e4 LT	505	return i;
	506	}
	507
	508	return 0;
	509	}
2982de69	510
f3cbcdc9 SR	511	/*
	512	* ncurses uses ESC to detect escaped char sequences. This resutl in
	513	* a small timeout before ESC is actually delivered to the application.
	514	* lxdialog suggest <ESC> <ESC> which is correctly translated to two
	515	* times esc. But then we need to ignore the second esc to avoid stepping
	516	* out one menu too much. Filter away all escaped key sequences since
bffbf6e2	517	* keypad(FALSE) turn off ncurses support for escape sequences - and that's
f3cbcdc9 SR	518	* needed to make notimeout() do as expected.
	519	*/
	520	int on_key_esc(WINDOW *win)
	521	{
	522	int key;
	523	int key2;
	524	int key3;
	525
	526	nodelay(win, TRUE);
	527	keypad(win, FALSE);
	528	key = wgetch(win);
	529	key2 = wgetch(win);
	530	do {
	531	key3 = wgetch(win);
	532	} while (key3 != ERR);
	533	nodelay(win, FALSE);
	534	keypad(win, TRUE);
	535	if (key == KEY_ESC && key2 == ERR)
	536	return KEY_ESC;
	537	else if (key != ERR && key != KEY_ESC && key2 == ERR)
	538	ungetch(key);
	539
	540	return -1;
	541	}
	542
c8dc68ad SR	543	/* redraw screen in new size */
	544	int on_key_resize(void)
	545	{
	546	dialog_clear();
	547	return KEY_RESIZE;
	548	}
f3cbcdc9	549
2982de69 SR	550	struct dialog_list *item_cur;
	551	struct dialog_list item_nil;
	552	struct dialog_list *item_head;
	553
	554	void item_reset(void)
	555	{
	556	struct dialog_list p, next;
	557
	558	for (p = item_head; p; p = next) {
	559	next = p->next;
	560	free(p);
	561	}
	562	item_head = NULL;
	563	item_cur = &item_nil;
	564	}
	565
	566	void item_make(const char *fmt, ...)
	567	{
	568	va_list ap;
	569	struct dialog_list p = malloc(sizeof(p));
	570
	571	if (item_head)
	572	item_cur->next = p;
	573	else
	574	item_head = p;
	575	item_cur = p;
	576	memset(p, 0, sizeof(*p));
	577
	578	va_start(ap, fmt);
	579	vsnprintf(item_cur->node.str, sizeof(item_cur->node.str), fmt, ap);
	580	va_end(ap);
	581	}
	582
	583	void item_add_str(const char *fmt, ...)
	584	{
	585	va_list ap;
bb66fc67	586	size_t avail;
2982de69 SR	587
	588	avail = sizeof(item_cur->node.str) - strlen(item_cur->node.str);
	589
	590	va_start(ap, fmt);
	591	vsnprintf(item_cur->node.str + strlen(item_cur->node.str),
	592	avail, fmt, ap);
	593	item_cur->node.str[sizeof(item_cur->node.str) - 1] = '\0';
	594	va_end(ap);
	595	}
	596
	597	void item_set_tag(char tag)
	598	{
	599	item_cur->node.tag = tag;
	600	}
	601	void item_set_data(void *ptr)
	602	{
	603	item_cur->node.data = ptr;
	604	}
	605
	606	void item_set_selected(int val)
	607	{
	608	item_cur->node.selected = val;
	609	}
	610
	611	int item_activate_selected(void)
	612	{
	613	item_foreach()
	614	if (item_is_selected())
	615	return 1;
	616	return 0;
	617	}
	618
	619	void *item_data(void)
	620	{
	621	return item_cur->node.data;
	622	}
	623
	624	char item_tag(void)
	625	{
	626	return item_cur->node.tag;
	627	}
	628
	629	int item_count(void)
	630	{
	631	int n = 0;
	632	struct dialog_list *p;
	633
	634	for (p = item_head; p; p = p->next)
	635	n++;
	636	return n;
	637	}
	638
	639	void item_set(int n)
	640	{
	641	int i = 0;
	642	item_foreach()
	643	if (i++ == n)
	644	return;
	645	}
	646
	647	int item_n(void)
	648	{
	649	int n = 0;
	650	struct dialog_list *p;
651
652	for (p = item_head; p; p = p->next) {
653	if (p == item_cur)
654	return n;
655	n++;
656	}
657	return 0;
658	}
659
660	const char *item_str(void)
661	{
662	return item_cur->node.str;
663	}
664
665	int item_is_selected(void)
666	{
667	return (item_cur->node.selected != 0);
668	}
669
670	int item_is_tag(char tag)
671	{
672	return (item_cur->node.tag == tag);
673	}