yann@1: /*
yann@1:  *  util.c
yann@1:  *
yann@1:  *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
yann@1:  *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
yann@1:  *
yann@1:  *  This program is free software; you can redistribute it and/or
yann@1:  *  modify it under the terms of the GNU General Public License
yann@1:  *  as published by the Free Software Foundation; either version 2
yann@1:  *  of the License, or (at your option) any later version.
yann@1:  *
yann@1:  *  This program is distributed in the hope that it will be useful,
yann@1:  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
yann@1:  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
yann@1:  *  GNU General Public License for more details.
yann@1:  *
yann@1:  *  You should have received a copy of the GNU General Public License
yann@1:  *  along with this program; if not, write to the Free Software
yann@1:  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
yann@1:  */
yann@1: 
yann@1: #include "dialog.h"
yann@1: 
yann@1: struct dialog_info dlg;
yann@1: 
yann@1: static void set_mono_theme(void)
yann@1: {
yann@1: 	dlg.screen.atr = A_NORMAL;
yann@1: 	dlg.shadow.atr = A_NORMAL;
yann@1: 	dlg.dialog.atr = A_NORMAL;
yann@1: 	dlg.title.atr = A_BOLD;
yann@1: 	dlg.border.atr = A_NORMAL;
yann@1: 	dlg.button_active.atr = A_REVERSE;
yann@1: 	dlg.button_inactive.atr = A_DIM;
yann@1: 	dlg.button_key_active.atr = A_REVERSE;
yann@1: 	dlg.button_key_inactive.atr = A_BOLD;
yann@1: 	dlg.button_label_active.atr = A_REVERSE;
yann@1: 	dlg.button_label_inactive.atr = A_NORMAL;
yann@1: 	dlg.inputbox.atr = A_NORMAL;
yann@1: 	dlg.inputbox_border.atr = A_NORMAL;
yann@1: 	dlg.searchbox.atr = A_NORMAL;
yann@1: 	dlg.searchbox_title.atr = A_BOLD;
yann@1: 	dlg.searchbox_border.atr = A_NORMAL;
yann@1: 	dlg.position_indicator.atr = A_BOLD;
yann@1: 	dlg.menubox.atr = A_NORMAL;
yann@1: 	dlg.menubox_border.atr = A_NORMAL;
yann@1: 	dlg.item.atr = A_NORMAL;
yann@1: 	dlg.item_selected.atr = A_REVERSE;
yann@1: 	dlg.tag.atr = A_BOLD;
yann@1: 	dlg.tag_selected.atr = A_REVERSE;
yann@1: 	dlg.tag_key.atr = A_BOLD;
yann@1: 	dlg.tag_key_selected.atr = A_REVERSE;
yann@1: 	dlg.check.atr = A_BOLD;
yann@1: 	dlg.check_selected.atr = A_REVERSE;
yann@1: 	dlg.uarrow.atr = A_BOLD;
yann@1: 	dlg.darrow.atr = A_BOLD;
yann@1: }
yann@1: 
yann@1: #define DLG_COLOR(dialog, f, b, h) \
yann@1: do {                               \
yann@1: 	dlg.dialog.fg = (f);       \
yann@1: 	dlg.dialog.bg = (b);       \
yann@1: 	dlg.dialog.hl = (h);       \
yann@1: } while (0)
yann@1: 
yann@1: static void set_classic_theme(void)
yann@1: {
yann@1: 	DLG_COLOR(screen,                COLOR_CYAN,   COLOR_BLUE,   true);
yann@1: 	DLG_COLOR(shadow,                COLOR_BLACK,  COLOR_BLACK,  true);
yann@1: 	DLG_COLOR(dialog,                COLOR_BLACK,  COLOR_WHITE,  false);
yann@1: 	DLG_COLOR(title,                 COLOR_YELLOW, COLOR_WHITE,  true);
yann@1: 	DLG_COLOR(border,                COLOR_WHITE,  COLOR_WHITE,  true);
yann@1: 	DLG_COLOR(button_active,         COLOR_WHITE,  COLOR_BLUE,   true);
yann@1: 	DLG_COLOR(button_inactive,       COLOR_BLACK,  COLOR_WHITE,  false);
yann@1: 	DLG_COLOR(button_key_active,     COLOR_WHITE,  COLOR_BLUE,   true);
yann@1: 	DLG_COLOR(button_key_inactive,   COLOR_RED,    COLOR_WHITE,  false);
yann@1: 	DLG_COLOR(button_label_active,   COLOR_YELLOW, COLOR_BLUE,   true);
yann@1: 	DLG_COLOR(button_label_inactive, COLOR_BLACK,  COLOR_WHITE,  true);
yann@1: 	DLG_COLOR(inputbox,              COLOR_BLACK,  COLOR_WHITE,  false);
yann@1: 	DLG_COLOR(inputbox_border,       COLOR_BLACK,  COLOR_WHITE,  false);
yann@1: 	DLG_COLOR(searchbox,             COLOR_BLACK,  COLOR_WHITE,  false);
yann@1: 	DLG_COLOR(searchbox_title,       COLOR_YELLOW, COLOR_WHITE,  true);
yann@1: 	DLG_COLOR(searchbox_border,      COLOR_WHITE,  COLOR_WHITE,  true);
yann@1: 	DLG_COLOR(position_indicator,    COLOR_YELLOW, COLOR_WHITE,  true);
yann@1: 	DLG_COLOR(menubox,               COLOR_BLACK,  COLOR_WHITE,  false);
yann@1: 	DLG_COLOR(menubox_border,        COLOR_WHITE,  COLOR_WHITE,  true);
yann@1: 	DLG_COLOR(item,                  COLOR_BLACK,  COLOR_WHITE,  false);
yann@1: 	DLG_COLOR(item_selected,         COLOR_WHITE,  COLOR_BLUE,   true);
yann@1: 	DLG_COLOR(tag,                   COLOR_YELLOW, COLOR_WHITE,  true);
yann@1: 	DLG_COLOR(tag_selected,          COLOR_YELLOW, COLOR_BLUE,   true);
yann@1: 	DLG_COLOR(tag_key,               COLOR_YELLOW, COLOR_WHITE,  true);
yann@1: 	DLG_COLOR(tag_key_selected,      COLOR_YELLOW, COLOR_BLUE,   true);
yann@1: 	DLG_COLOR(check,                 COLOR_BLACK,  COLOR_WHITE,  false);
yann@1: 	DLG_COLOR(check_selected,        COLOR_WHITE,  COLOR_BLUE,   true);
yann@1: 	DLG_COLOR(uarrow,                COLOR_GREEN,  COLOR_WHITE,  true);
yann@1: 	DLG_COLOR(darrow,                COLOR_GREEN,  COLOR_WHITE,  true);
yann@1: }
yann@1: 
yann@1: static void set_blackbg_theme(void)
yann@1: {
yann@1: 	DLG_COLOR(screen, COLOR_RED,   COLOR_BLACK, true);
yann@1: 	DLG_COLOR(shadow, COLOR_BLACK, COLOR_BLACK, false);
yann@1: 	DLG_COLOR(dialog, COLOR_WHITE, COLOR_BLACK, false);
yann@1: 	DLG_COLOR(title,  COLOR_RED,   COLOR_BLACK, false);
yann@1: 	DLG_COLOR(border, COLOR_BLACK, COLOR_BLACK, true);
yann@1: 
yann@1: 	DLG_COLOR(button_active,         COLOR_YELLOW, COLOR_RED,   false);
yann@1: 	DLG_COLOR(button_inactive,       COLOR_YELLOW, COLOR_BLACK, false);
yann@1: 	DLG_COLOR(button_key_active,     COLOR_YELLOW, COLOR_RED,   true);
yann@1: 	DLG_COLOR(button_key_inactive,   COLOR_RED,    COLOR_BLACK, false);
yann@1: 	DLG_COLOR(button_label_active,   COLOR_WHITE,  COLOR_RED,   false);
yann@1: 	DLG_COLOR(button_label_inactive, COLOR_BLACK,  COLOR_BLACK, true);
yann@1: 
yann@1: 	DLG_COLOR(inputbox,         COLOR_YELLOW, COLOR_BLACK, false);
yann@1: 	DLG_COLOR(inputbox_border,  COLOR_YELLOW, COLOR_BLACK, false);
yann@1: 
yann@1: 	DLG_COLOR(searchbox,        COLOR_YELLOW, COLOR_BLACK, false);
yann@1: 	DLG_COLOR(searchbox_title,  COLOR_YELLOW, COLOR_BLACK, true);
yann@1: 	DLG_COLOR(searchbox_border, COLOR_BLACK,  COLOR_BLACK, true);
yann@1: 
yann@1: 	DLG_COLOR(position_indicator, COLOR_RED, COLOR_BLACK,  false);
yann@1: 
yann@1: 	DLG_COLOR(menubox,          COLOR_YELLOW, COLOR_BLACK, false);
yann@1: 	DLG_COLOR(menubox_border,   COLOR_BLACK,  COLOR_BLACK, true);
yann@1: 
yann@1: 	DLG_COLOR(item,             COLOR_WHITE, COLOR_BLACK, false);
yann@1: 	DLG_COLOR(item_selected,    COLOR_WHITE, COLOR_RED,   false);
yann@1: 
yann@1: 	DLG_COLOR(tag,              COLOR_RED,    COLOR_BLACK, false);
yann@1: 	DLG_COLOR(tag_selected,     COLOR_YELLOW, COLOR_RED,   true);
yann@1: 	DLG_COLOR(tag_key,          COLOR_RED,    COLOR_BLACK, false);
yann@1: 	DLG_COLOR(tag_key_selected, COLOR_YELLOW, COLOR_RED,   true);
yann@1: 
yann@1: 	DLG_COLOR(check,            COLOR_YELLOW, COLOR_BLACK, false);
yann@1: 	DLG_COLOR(check_selected,   COLOR_YELLOW, COLOR_RED,   true);
yann@1: 
yann@1: 	DLG_COLOR(uarrow, COLOR_RED, COLOR_BLACK, false);
yann@1: 	DLG_COLOR(darrow, COLOR_RED, COLOR_BLACK, false);
yann@1: }
yann@1: 
yann@1: static void set_bluetitle_theme(void)
yann@1: {
yann@1: 	set_classic_theme();
yann@1: 	DLG_COLOR(title,               COLOR_BLUE,   COLOR_WHITE, true);
yann@1: 	DLG_COLOR(button_key_active,   COLOR_YELLOW, COLOR_BLUE,  true);
yann@1: 	DLG_COLOR(button_label_active, COLOR_WHITE,  COLOR_BLUE,  true);
yann@1: 	DLG_COLOR(searchbox_title,     COLOR_BLUE,   COLOR_WHITE, true);
yann@1: 	DLG_COLOR(position_indicator,  COLOR_BLUE,   COLOR_WHITE, true);
yann@1: 	DLG_COLOR(tag,                 COLOR_BLUE,   COLOR_WHITE, true);
yann@1: 	DLG_COLOR(tag_key,             COLOR_BLUE,   COLOR_WHITE, true);
yann@1: 
yann@1: }
yann@1: 
yann@1: /*
yann@1:  * Select color theme
yann@1:  */
yann@1: static int set_theme(const char *theme)
yann@1: {
yann@1: 	int use_color = 1;
yann@1: 	if (!theme)
yann@1: 		set_bluetitle_theme();
yann@1: 	else if (strcmp(theme, "classic") == 0)
yann@1: 		set_classic_theme();
yann@1: 	else if (strcmp(theme, "bluetitle") == 0)
yann@1: 		set_bluetitle_theme();
yann@1: 	else if (strcmp(theme, "blackbg") == 0)
yann@1: 		set_blackbg_theme();
yann@1: 	else if (strcmp(theme, "mono") == 0)
yann@1: 		use_color = 0;
yann@1: 
yann@1: 	return use_color;
yann@1: }
yann@1: 
yann@1: static void init_one_color(struct dialog_color *color)
yann@1: {
yann@1: 	static int pair = 0;
yann@1: 
yann@1: 	pair++;
yann@1: 	init_pair(pair, color->fg, color->bg);
yann@1: 	if (color->hl)
yann@1: 		color->atr = A_BOLD | COLOR_PAIR(pair);
yann@1: 	else
yann@1: 		color->atr = COLOR_PAIR(pair);
yann@1: }
yann@1: 
yann@1: static void init_dialog_colors(void)
yann@1: {
yann@1: 	init_one_color(&dlg.screen);
yann@1: 	init_one_color(&dlg.shadow);
yann@1: 	init_one_color(&dlg.dialog);
yann@1: 	init_one_color(&dlg.title);
yann@1: 	init_one_color(&dlg.border);
yann@1: 	init_one_color(&dlg.button_active);
yann@1: 	init_one_color(&dlg.button_inactive);
yann@1: 	init_one_color(&dlg.button_key_active);
yann@1: 	init_one_color(&dlg.button_key_inactive);
yann@1: 	init_one_color(&dlg.button_label_active);
yann@1: 	init_one_color(&dlg.button_label_inactive);
yann@1: 	init_one_color(&dlg.inputbox);
yann@1: 	init_one_color(&dlg.inputbox_border);
yann@1: 	init_one_color(&dlg.searchbox);
yann@1: 	init_one_color(&dlg.searchbox_title);
yann@1: 	init_one_color(&dlg.searchbox_border);
yann@1: 	init_one_color(&dlg.position_indicator);
yann@1: 	init_one_color(&dlg.menubox);
yann@1: 	init_one_color(&dlg.menubox_border);
yann@1: 	init_one_color(&dlg.item);
yann@1: 	init_one_color(&dlg.item_selected);
yann@1: 	init_one_color(&dlg.tag);
yann@1: 	init_one_color(&dlg.tag_selected);
yann@1: 	init_one_color(&dlg.tag_key);
yann@1: 	init_one_color(&dlg.tag_key_selected);
yann@1: 	init_one_color(&dlg.check);
yann@1: 	init_one_color(&dlg.check_selected);
yann@1: 	init_one_color(&dlg.uarrow);
yann@1: 	init_one_color(&dlg.darrow);
yann@1: }
yann@1: 
yann@1: /*
yann@1:  * Setup for color display
yann@1:  */
yann@1: static void color_setup(const char *theme)
yann@1: {
yann@943: 	int use_color;
yann@943: 
yann@943: 	use_color = set_theme(theme);
yann@943: 	if (use_color && has_colors()) {
yann@943: 		start_color();
yann@943: 		init_dialog_colors();
yann@943: 	} else
yann@1: 		set_mono_theme();
yann@1: }
yann@1: 
yann@1: /*
yann@1:  * Set window to attribute 'attr'
yann@1:  */
yann@1: void attr_clear(WINDOW * win, int height, int width, chtype attr)
yann@1: {
yann@1: 	int i, j;
yann@1: 
yann@1: 	wattrset(win, attr);
yann@1: 	for (i = 0; i < height; i++) {
yann@1: 		wmove(win, i, 0);
yann@1: 		for (j = 0; j < width; j++)
yann@1: 			waddch(win, ' ');
yann@1: 	}
yann@1: 	touchwin(win);
yann@1: }
yann@1: 
yann@1: void dialog_clear(void)
yann@1: {
yann@1: 	attr_clear(stdscr, LINES, COLS, dlg.screen.atr);
yann@1: 	/* Display background title if it exists ... - SLH */
yann@1: 	if (dlg.backtitle != NULL) {
yann@1: 		int i;
yann@1: 
yann@1: 		wattrset(stdscr, dlg.screen.atr);
yann@1: 		mvwaddstr(stdscr, 0, 1, (char *)dlg.backtitle);
yann@1: 		wmove(stdscr, 1, 1);
yann@1: 		for (i = 1; i < COLS - 1; i++)
yann@1: 			waddch(stdscr, ACS_HLINE);
yann@1: 	}
yann@1: 	wnoutrefresh(stdscr);
yann@1: }
yann@1: 
yann@1: /*
yann@1:  * Do some initialization for dialog
yann@1:  */
yann@943: int init_dialog(const char *backtitle)
yann@1: {
yann@943: 	int height, width;
yann@943: 
yann@943: 	initscr();		/* Init curses */
yann@943: 	getmaxyx(stdscr, height, width);
yann@943: 	if (height < 19 || width < 80) {
yann@943: 		endwin();
yann@943: 		return -ERRDISPLAYTOOSMALL;
yann@943: 	}
yann@943: 
yann@1: 	dlg.backtitle = backtitle;
yann@1: 	color_setup(getenv("MENUCONFIG_COLOR"));
yann@1: 
yann@1: 	keypad(stdscr, TRUE);
yann@1: 	cbreak();
yann@1: 	noecho();
yann@1: 	dialog_clear();
yann@943: 
yann@943: 	return 0;
yann@943: }
yann@943: 
yann@943: void set_dialog_backtitle(const char *backtitle)
yann@943: {
yann@943: 	dlg.backtitle = backtitle;
yann@1: }
yann@1: 
yann@1: /*
yann@1:  * End using dialog functions.
yann@1:  */
yann@943: void end_dialog(int x, int y)
yann@1: {
yann@943: 	/* move cursor back to original position */
yann@943: 	move(y, x);
yann@943: 	refresh();
yann@1: 	endwin();
yann@1: }
yann@1: 
yann@1: /* Print the title of the dialog. Center the title and truncate
yann@1:  * tile if wider than dialog (- 2 chars).
yann@1:  **/
yann@1: void print_title(WINDOW *dialog, const char *title, int width)
yann@1: {
yann@1: 	if (title) {
yann@1: 		int tlen = MIN(width - 2, strlen(title));
yann@1: 		wattrset(dialog, dlg.title.atr);
yann@1: 		mvwaddch(dialog, 0, (width - tlen) / 2 - 1, ' ');
yann@1: 		mvwaddnstr(dialog, 0, (width - tlen)/2, title, tlen);
yann@1: 		waddch(dialog, ' ');
yann@1: 	}
yann@1: }
yann@1: 
yann@1: /*
yann@1:  * Print a string of text in a window, automatically wrap around to the
yann@1:  * next line if the string is too long to fit on one line. Newline
yann@1:  * characters '\n' are replaced by spaces.  We start on a new line
yann@1:  * if there is no room for at least 4 nonblanks following a double-space.
yann@1:  */
yann@1: void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x)
yann@1: {
yann@1: 	int newl, cur_x, cur_y;
yann@1: 	int i, prompt_len, room, wlen;
yann@1: 	char tempstr[MAX_LEN + 1], *word, *sp, *sp2;
yann@1: 
yann@1: 	strcpy(tempstr, prompt);
yann@1: 
yann@1: 	prompt_len = strlen(tempstr);
yann@1: 
yann@1: 	/*
yann@1: 	 * Remove newlines
yann@1: 	 */
yann@1: 	for (i = 0; i < prompt_len; i++) {
yann@1: 		if (tempstr[i] == '\n')
yann@1: 			tempstr[i] = ' ';
yann@1: 	}
yann@1: 
yann@1: 	if (prompt_len <= width - x * 2) {	/* If prompt is short */
yann@1: 		wmove(win, y, (width - prompt_len) / 2);
yann@1: 		waddstr(win, tempstr);
yann@1: 	} else {
yann@1: 		cur_x = x;
yann@1: 		cur_y = y;
yann@1: 		newl = 1;
yann@1: 		word = tempstr;
yann@1: 		while (word && *word) {
yann@943: 			sp = strchr(word, ' ');
yann@1: 			if (sp)
yann@1: 				*sp++ = 0;
yann@1: 
yann@1: 			/* Wrap to next line if either the word does not fit,
yann@1: 			   or it is the first word of a new sentence, and it is
yann@1: 			   short, and the next word does not fit. */
yann@1: 			room = width - cur_x;
yann@1: 			wlen = strlen(word);
yann@1: 			if (wlen > room ||
yann@1: 			    (newl && wlen < 4 && sp
yann@1: 			     && wlen + 1 + strlen(sp) > room
yann@943: 			     && (!(sp2 = strchr(sp, ' '))
yann@1: 				 || wlen + 1 + (sp2 - sp) > room))) {
yann@1: 				cur_y++;
yann@1: 				cur_x = x;
yann@1: 			}
yann@1: 			wmove(win, cur_y, cur_x);
yann@1: 			waddstr(win, word);
yann@1: 			getyx(win, cur_y, cur_x);
yann@1: 			cur_x++;
yann@1: 			if (sp && *sp == ' ') {
yann@1: 				cur_x++;	/* double space */
yann@1: 				while (*++sp == ' ') ;
yann@1: 				newl = 1;
yann@1: 			} else
yann@1: 				newl = 0;
yann@1: 			word = sp;
yann@1: 		}
yann@1: 	}
yann@1: }
yann@1: 
yann@1: /*
yann@1:  * Print a button
yann@1:  */
yann@1: void print_button(WINDOW * win, const char *label, int y, int x, int selected)
yann@1: {
yann@1: 	int i, temp;
yann@1: 
yann@1: 	wmove(win, y, x);
yann@1: 	wattrset(win, selected ? dlg.button_active.atr
yann@1: 		 : dlg.button_inactive.atr);
yann@1: 	waddstr(win, "<");
yann@1: 	temp = strspn(label, " ");
yann@1: 	label += temp;
yann@1: 	wattrset(win, selected ? dlg.button_label_active.atr
yann@1: 		 : dlg.button_label_inactive.atr);
yann@1: 	for (i = 0; i < temp; i++)
yann@1: 		waddch(win, ' ');
yann@1: 	wattrset(win, selected ? dlg.button_key_active.atr
yann@1: 		 : dlg.button_key_inactive.atr);
yann@1: 	waddch(win, label[0]);
yann@1: 	wattrset(win, selected ? dlg.button_label_active.atr
yann@1: 		 : dlg.button_label_inactive.atr);
yann@1: 	waddstr(win, (char *)label + 1);
yann@1: 	wattrset(win, selected ? dlg.button_active.atr
yann@1: 		 : dlg.button_inactive.atr);
yann@1: 	waddstr(win, ">");
yann@1: 	wmove(win, y, x + temp + 1);
yann@1: }
yann@1: 
yann@1: /*
yann@1:  * Draw a rectangular box with line drawing characters
yann@1:  */
yann@1: void
yann@1: draw_box(WINDOW * win, int y, int x, int height, int width,
yann@1: 	 chtype box, chtype border)
yann@1: {
yann@1: 	int i, j;
yann@1: 
yann@1: 	wattrset(win, 0);
yann@1: 	for (i = 0; i < height; i++) {
yann@1: 		wmove(win, y + i, x);
yann@1: 		for (j = 0; j < width; j++)
yann@1: 			if (!i && !j)
yann@1: 				waddch(win, border | ACS_ULCORNER);
yann@1: 			else if (i == height - 1 && !j)
yann@1: 				waddch(win, border | ACS_LLCORNER);
yann@1: 			else if (!i && j == width - 1)
yann@1: 				waddch(win, box | ACS_URCORNER);
yann@1: 			else if (i == height - 1 && j == width - 1)
yann@1: 				waddch(win, box | ACS_LRCORNER);
yann@1: 			else if (!i)
yann@1: 				waddch(win, border | ACS_HLINE);
yann@1: 			else if (i == height - 1)
yann@1: 				waddch(win, box | ACS_HLINE);
yann@1: 			else if (!j)
yann@1: 				waddch(win, border | ACS_VLINE);
yann@1: 			else if (j == width - 1)
yann@1: 				waddch(win, box | ACS_VLINE);
yann@1: 			else
yann@1: 				waddch(win, box | ' ');
yann@1: 	}
yann@1: }
yann@1: 
yann@1: /*
yann@1:  * Draw shadows along the right and bottom edge to give a more 3D look
yann@1:  * to the boxes
yann@1:  */
yann@1: void draw_shadow(WINDOW * win, int y, int x, int height, int width)
yann@1: {
yann@1: 	int i;
yann@1: 
yann@1: 	if (has_colors()) {	/* Whether terminal supports color? */
yann@1: 		wattrset(win, dlg.shadow.atr);
yann@1: 		wmove(win, y + height, x + 2);
yann@1: 		for (i = 0; i < width; i++)
yann@1: 			waddch(win, winch(win) & A_CHARTEXT);
yann@1: 		for (i = y + 1; i < y + height + 1; i++) {
yann@1: 			wmove(win, i, x + width);
yann@1: 			waddch(win, winch(win) & A_CHARTEXT);
yann@1: 			waddch(win, winch(win) & A_CHARTEXT);
yann@1: 		}
yann@1: 		wnoutrefresh(win);
yann@1: 	}
yann@1: }
yann@1: 
yann@1: /*
yann@1:  *  Return the position of the first alphabetic character in a string.
yann@1:  */
yann@1: int first_alpha(const char *string, const char *exempt)
yann@1: {
yann@1: 	int i, in_paren = 0, c;
yann@1: 
yann@1: 	for (i = 0; i < strlen(string); i++) {
yann@1: 		c = tolower(string[i]);
yann@1: 
yann@1: 		if (strchr("<[(", c))
yann@1: 			++in_paren;
yann@1: 		if (strchr(">])", c) && in_paren > 0)
yann@1: 			--in_paren;
yann@1: 
yann@1: 		if ((!in_paren) && isalpha(c) && strchr(exempt, c) == 0)
yann@1: 			return i;
yann@1: 	}
yann@1: 
yann@1: 	return 0;
yann@1: }
yann@1: 
yann@1: /*
yann@1:  * ncurses uses ESC to detect escaped char sequences. This resutl in
yann@1:  * a small timeout before ESC is actually delivered to the application.
yann@1:  * lxdialog suggest <ESC> <ESC> which is correctly translated to two
yann@1:  * times esc. But then we need to ignore the second esc to avoid stepping
yann@1:  * out one menu too much. Filter away all escaped key sequences since
yann@1:  * keypad(FALSE) turn off ncurses support for escape sequences - and thats
yann@1:  * needed to make notimeout() do as expected.
yann@1:  */
yann@1: int on_key_esc(WINDOW *win)
yann@1: {
yann@1: 	int key;
yann@1: 	int key2;
yann@1: 	int key3;
yann@1: 
yann@1: 	nodelay(win, TRUE);
yann@1: 	keypad(win, FALSE);
yann@1: 	key = wgetch(win);
yann@1: 	key2 = wgetch(win);
yann@1: 	do {
yann@1: 		key3 = wgetch(win);
yann@1: 	} while (key3 != ERR);
yann@1: 	nodelay(win, FALSE);
yann@1: 	keypad(win, TRUE);
yann@1: 	if (key == KEY_ESC && key2 == ERR)
yann@1: 		return KEY_ESC;
yann@1: 	else if (key != ERR && key != KEY_ESC && key2 == ERR)
yann@1: 		ungetch(key);
yann@1: 
yann@1: 	return -1;
yann@1: }
yann@1: 
yann@1: /* redraw screen in new size */
yann@1: int on_key_resize(void)
yann@1: {
yann@1: 	dialog_clear();
yann@1: 	return KEY_RESIZE;
yann@1: }
yann@1: 
yann@1: struct dialog_list *item_cur;
yann@1: struct dialog_list item_nil;
yann@1: struct dialog_list *item_head;
yann@1: 
yann@1: void item_reset(void)
yann@1: {
yann@1: 	struct dialog_list *p, *next;
yann@1: 
yann@1: 	for (p = item_head; p; p = next) {
yann@1: 		next = p->next;
yann@1: 		free(p);
yann@1: 	}
yann@1: 	item_head = NULL;
yann@1: 	item_cur = &item_nil;
yann@1: }
yann@1: 
yann@1: void item_make(const char *fmt, ...)
yann@1: {
yann@1: 	va_list ap;
yann@1: 	struct dialog_list *p = malloc(sizeof(*p));
yann@1: 
yann@1: 	if (item_head)
yann@1: 		item_cur->next = p;
yann@1: 	else
yann@1: 		item_head = p;
yann@1: 	item_cur = p;
yann@1: 	memset(p, 0, sizeof(*p));
yann@1: 
yann@1: 	va_start(ap, fmt);
yann@1: 	vsnprintf(item_cur->node.str, sizeof(item_cur->node.str), fmt, ap);
yann@1: 	va_end(ap);
yann@1: }
yann@1: 
yann@1: void item_add_str(const char *fmt, ...)
yann@1: {
yann@1: 	va_list ap;
yann@1:         size_t avail;
yann@1: 
yann@1: 	avail = sizeof(item_cur->node.str) - strlen(item_cur->node.str);
yann@1: 
yann@1: 	va_start(ap, fmt);
yann@1: 	vsnprintf(item_cur->node.str + strlen(item_cur->node.str),
yann@1: 		  avail, fmt, ap);
yann@1: 	item_cur->node.str[sizeof(item_cur->node.str) - 1] = '\0';
yann@1: 	va_end(ap);
yann@1: }
yann@1: 
yann@1: void item_set_tag(char tag)
yann@1: {
yann@1: 	item_cur->node.tag = tag;
yann@1: }
yann@1: void item_set_data(void *ptr)
yann@1: {
yann@1: 	item_cur->node.data = ptr;
yann@1: }
yann@1: 
yann@1: void item_set_selected(int val)
yann@1: {
yann@1: 	item_cur->node.selected = val;
yann@1: }
yann@1: 
yann@1: int item_activate_selected(void)
yann@1: {
yann@1: 	item_foreach()
yann@1: 		if (item_is_selected())
yann@1: 			return 1;
yann@1: 	return 0;
yann@1: }
yann@1: 
yann@1: void *item_data(void)
yann@1: {
yann@1: 	return item_cur->node.data;
yann@1: }
yann@1: 
yann@1: char item_tag(void)
yann@1: {
yann@1: 	return item_cur->node.tag;
yann@1: }
yann@1: 
yann@1: int item_count(void)
yann@1: {
yann@1: 	int n = 0;
yann@1: 	struct dialog_list *p;
yann@1: 
yann@1: 	for (p = item_head; p; p = p->next)
yann@1: 		n++;
yann@1: 	return n;
yann@1: }
yann@1: 
yann@1: void item_set(int n)
yann@1: {
yann@1: 	int i = 0;
yann@1: 	item_foreach()
yann@1: 		if (i++ == n)
yann@1: 			return;
yann@1: }
yann@1: 
yann@1: int item_n(void)
yann@1: {
yann@1: 	int n = 0;
yann@1: 	struct dialog_list *p;
yann@1: 
yann@1: 	for (p = item_head; p; p = p->next) {
yann@1: 		if (p == item_cur)
yann@1: 			return n;
yann@1: 		n++;
yann@1: 	}
yann@1: 	return 0;
yann@1: }
yann@1: 
yann@1: const char *item_str(void)
yann@1: {
yann@1: 	return item_cur->node.str;
yann@1: }
yann@1: 
yann@1: int item_is_selected(void)
yann@1: {
yann@1: 	return (item_cur->node.selected != 0);
yann@1: }
yann@1: 
yann@1: int item_is_tag(char tag)
yann@1: {
yann@1: 	return (item_cur->node.tag == tag);
yann@1: }