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 */
27 static void
28 print_buttons(WINDOW *dialog, int height, int width, int selected)
29 {
30 int x = width / 2 - 10;
31 int y = height - 2;
32
33 print_button (dialog, " Yes ", y, x, selected == 0);
34 print_button (dialog, " No ", y, x + 13, selected == 1);
35
36 wmove(dialog, y, x+1 + 13*selected );
37 wrefresh (dialog);
38 }
39
40 /*
41 * Display a dialog box with two buttons - Yes and No
42 */
43 int
44 dialog_yesno (const char *title, const char *prompt, int height, int width)
45 {
46 int i, x, y, key = 0, button = 0;
47 WINDOW *dialog;
48
49 /* center dialog box on screen */
50 x = (COLS - width) / 2;
51 y = (LINES - height) / 2;
52
53 draw_shadow (stdscr, y, x, height, width);
54
55 dialog = newwin (height, width, y, x);
56 keypad (dialog, TRUE);
57
58 draw_box (dialog, 0, 0, height, width, dialog_attr, border_attr);
59 wattrset (dialog, border_attr);
60 mvwaddch (dialog, height-3, 0, ACS_LTEE);
61 for (i = 0; i < width - 2; i++)
62 waddch (dialog, ACS_HLINE);
63 wattrset (dialog, dialog_attr);
64 waddch (dialog, ACS_RTEE);
65
66 if (title != NULL && strlen(title) >= width-2 ) {
67 /* truncate long title -- mec */
68 char * title2 = malloc(width-2+1);
69 memcpy( title2, title, width-2 );
70 title2[width-2] = '\0';
71 title = title2;
72 }
73
74 if (title != NULL) {
75 wattrset (dialog, title_attr);
76 mvwaddch (dialog, 0, (width - strlen(title))/2 - 1, ' ');
77 waddstr (dialog, (char *)title);
78 waddch (dialog, ' ');
79 }
80
81 wattrset (dialog, dialog_attr);
82 print_autowrap (dialog, prompt, width - 2, 1, 3);
83
84 print_buttons(dialog, height, width, 0);
85
86 while (key != ESC) {
87 key = wgetch (dialog);
88 switch (key) {
89 case 'Y':
90 case 'y':
91 delwin (dialog);
92 return 0;
93 case 'N':
94 case 'n':
95 delwin (dialog);
96 return 1;
97
98 case TAB:
99 case KEY_LEFT:
100 case KEY_RIGHT:
101 button = ((key == KEY_LEFT ? --button : ++button) < 0)
102 ? 1 : (button > 1 ? 0 : button);
103
104 print_buttons(dialog, height, width, button);
105 wrefresh (dialog);
106 break;
107 case ' ':
108 case '\n':
109 delwin (dialog);
110 return button;
111 case ESC:
112 break;
113 }
114 }
115
116 delwin (dialog);
117 return -1; /* ESC pressed */
118 }
119
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