/*

 *  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 */

}