1/*
2 *  yesno.c -- implements the yes/no box
3 *
4 *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
5 *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
6 *
7 *  This program is free software; you can redistribute it and/or
8 *  modify it under the terms of the GNU General Public License
9 *  as published by the Free Software Foundation; either version 2
10 *  of the License, or (at your option) any later version.
11 *
12 *  This program is distributed in the hope that it will be useful,
13 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
14 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 *  GNU General Public License for more details.
16 *
17 *  You should have received a copy of the GNU General Public License
18 *  along with this program; if not, write to the Free Software
19 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21
22#include "dialog.h"
23
24/*
25 * Display termination buttons
26 */
27static void print_buttons(WINDOW * dialog, int height, int width, int selected)
28{
29	int x = width / 2 - 10;
30	int y = height - 2;
31
32	print_button(dialog, gettext(" Yes "), y, x, selected == 0);
33	print_button(dialog, gettext("  No  "), y, x + 13, selected == 1);
34
35	wmove(dialog, y, x + 1 + 13 * selected);
36	wrefresh(dialog);
37}
38
39/*
40 * Display a dialog box with two buttons - Yes and No
41 */
42int dialog_yesno(const char *title, const char *prompt, int height, int width)
43{
44	int i, x, y, key = 0, button = 0;
45	WINDOW *dialog;
46
47do_resize:
48	if (getmaxy(stdscr) < (height + YESNO_HEIGTH_MIN))
49		return -ERRDISPLAYTOOSMALL;
50	if (getmaxx(stdscr) < (width + YESNO_WIDTH_MIN))
51		return -ERRDISPLAYTOOSMALL;
52
53	/* center dialog box on screen */
54	x = (getmaxx(stdscr) - width) / 2;
55	y = (getmaxy(stdscr) - height) / 2;
56
57	draw_shadow(stdscr, y, x, height, width);
58
59	dialog = newwin(height, width, y, x);
60	keypad(dialog, TRUE);
61
62	draw_box(dialog, 0, 0, height, width,
63		 dlg.dialog.atr, dlg.border.atr);
64	wattrset(dialog, dlg.border.atr);
65	mvwaddch(dialog, height - 3, 0, ACS_LTEE);
66	for (i = 0; i < width - 2; i++)
67		waddch(dialog, ACS_HLINE);
68	wattrset(dialog, dlg.dialog.atr);
69	waddch(dialog, ACS_RTEE);
70
71	print_title(dialog, title, width);
72
73	wattrset(dialog, dlg.dialog.atr);
74	print_autowrap(dialog, prompt, width - 2, 1, 3);
75
76	print_buttons(dialog, height, width, 0);
77
78	while (key != KEY_ESC) {
79		key = wgetch(dialog);
80		switch (key) {
81		case 'Y':
82		case 'y':
83			delwin(dialog);
84			return 0;
85		case 'N':
86		case 'n':
87			delwin(dialog);
88			return 1;
89
90		case TAB:
91		case KEY_LEFT:
92		case KEY_RIGHT:
93			button = ((key == KEY_LEFT ? --button : ++button) < 0) ? 1 : (button > 1 ? 0 : button);
94
95			print_buttons(dialog, height, width, button);
96			wrefresh(dialog);
97			break;
98		case ' ':
99		case '\n':
100			delwin(dialog);
101			return button;
102		case KEY_ESC:
103			key = on_key_esc(dialog);
104			break;
105		case KEY_RESIZE:
106			delwin(dialog);
107			on_key_resize();
108			goto do_resize;
109		}
110	}
111
112	delwin(dialog);
113	return key;		/* ESC pressed */
114}
115