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 */
print_buttons(WINDOW * dialog,int height,int width,int selected)27 static 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 */
dialog_yesno(const char * title,const char * prompt,int height,int width)42 int 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
47 do_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