/*

  *  yesno.c -- implements the yes/no box

  *

  *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)

  *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)

  *

  *  This program is free software; you can redistribute it and/or

  *  modify it under the terms of the GNU General Public License

  *  as published by the Free Software Foundation; either version 2

  *  of the License, or (at your option) any later version.

  *

  *  This program is distributed in the hope that it will be useful,

  *  but WITHOUT ANY WARRANTY; without even the implied warranty of

  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  *  GNU General Public License for more details.

  *

  *  You should have received a copy of the GNU General Public License

  *  along with this program; if not, write to the Free Software

  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

  */

 #include "dialog.h"

 /*

  * Display termination buttons

  */

 static void print_buttons(WINDOW * dialog, int height, int width, int selected)

 {

 	int x = width / 2 - 10;

 	int y = height - 2;

 	print_button(dialog, " Yes ", y, x, selected == 0);

 	print_button(dialog, "  No  ", y, x + 13, selected == 1);

 	wmove(dialog, y, x + 1 + 13 * selected);

 	wrefresh(dialog);

 }

 /*

  * Display a dialog box with two buttons - Yes and No

  */

 int dialog_yesno(const char *title, const char *prompt, int height, int width)

 {

 	int i, x, y, key = 0, button = 0;

 	WINDOW *dialog;

 do_resize:

 	if (getmaxy(stdscr) < (height + 4))

 		return -ERRDISPLAYTOOSMALL;

 	if (getmaxx(stdscr) < (width + 4))

 		return -ERRDISPLAYTOOSMALL;

 	/* center dialog box on screen */

 	x = (COLS - width) / 2;

 	y = (LINES - height) / 2;

 	draw_shadow(stdscr, y, x, height, width);

 	dialog = newwin(height, width, y, x);

 	keypad(dialog, TRUE);

 	draw_box(dialog, 0, 0, height, width,

 		 dlg.dialog.atr, dlg.border.atr);

 	wattrset(dialog, dlg.border.atr);

 	mvwaddch(dialog, height - 3, 0, ACS_LTEE);

 	for (i = 0; i < width - 2; i++)

 		waddch(dialog, ACS_HLINE);

 	wattrset(dialog, dlg.dialog.atr);

 	waddch(dialog, ACS_RTEE);

 	print_title(dialog, title, width);

 	wattrset(dialog, dlg.dialog.atr);

 	print_autowrap(dialog, prompt, width - 2, 1, 3);

 	print_buttons(dialog, height, width, 0);

 	while (key != KEY_ESC) {

 		key = wgetch(dialog);

 		switch (key) {

 		case 'Y':

 		case 'y':

 			delwin(dialog);

 			return 0;

 		case 'N':

 		case 'n':

 			delwin(dialog);

 			return 1;

 		case TAB:

 		case KEY_LEFT:

 		case KEY_RIGHT:

 			button = ((key == KEY_LEFT ? --button : ++button) < 0) ? 1 : (button > 1 ? 0 : button);

 			print_buttons(dialog, height, width, button);

 			wrefresh(dialog);

 			break;

 		case ' ':

 		case '\n':

 			delwin(dialog);

 			return button;

 		case KEY_ESC:

 			key = on_key_esc(dialog);

 			break;

 		case KEY_RESIZE:

 			delwin(dialog);

 			on_key_resize();

 			goto do_resize;

 		}

 	}

 	delwin(dialog);

 	return key;		/* ESC pressed */

 }