]> CyberLeo.Net >> Repos - FreeBSD/releng/9.2.git/blob - contrib/dialog/yesno.c
- Copy stable/9 to releng/9.2 as part of the 9.2-RELEASE cycle.
[FreeBSD/releng/9.2.git] / contrib / dialog / yesno.c
1 /*
2  *  $Id: yesno.c,v 1.51 2011/06/27 08:20:57 tom Exp $
3  *
4  *  yesno.c -- implements the yes/no box
5  *
6  *  Copyright 1999-2010,2011    Thomas E. Dickey
7  *
8  *  This program is free software; you can redistribute it and/or modify
9  *  it under the terms of the GNU Lesser General Public License, version 2.1
10  *  as published by the Free Software Foundation.
11  *
12  *  This program is distributed in the hope that it will be useful, but
13  *  WITHOUT ANY WARRANTY; without even the implied warranty of
14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  *  Lesser General Public License for more details.
16  *
17  *  You should have received a copy of the GNU Lesser General Public
18  *  License along with this program; if not, write to
19  *      Free Software Foundation, Inc.
20  *      51 Franklin St., Fifth Floor
21  *      Boston, MA 02110, USA.
22  *
23  *  An earlier version of this program lists as authors
24  *      Savio Lam (lam836@cs.cuhk.hk)
25  */
26
27 #include <dialog.h>
28 #include <dlg_keys.h>
29
30 /*
31  * Display a dialog box with two buttons - Yes and No.
32  */
33 int
34 dialog_yesno(const char *title, const char *cprompt, int height, int width)
35 {
36     /* *INDENT-OFF* */
37     static DLG_KEYS_BINDING binding[] = {
38         HELPKEY_BINDINGS,
39         ENTERKEY_BINDINGS,
40         DLG_KEYS_DATA( DLGK_ENTER,      ' ' ),
41         DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_DOWN ),
42         DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_RIGHT ),
43         DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ),
44         DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_UP ),
45         DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ),
46         DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_LEFT ),
47         SCROLLKEY_BINDINGS,
48         END_KEYS_BINDING
49     };
50     /* *INDENT-ON* */
51
52     int x, y;
53     int key = 0, fkey;
54     int code;
55     int button = dlg_defaultno_button();
56     WINDOW *dialog = 0;
57     int result = DLG_EXIT_UNKNOWN;
58     char *prompt = dlg_strclone(cprompt);
59     const char **buttons = dlg_yes_labels();
60     int min_width = 25;
61     bool show = TRUE;
62     int page, last = 0, offset = 0;
63
64 #ifdef KEY_RESIZE
65     int req_high = height;
66     int req_wide = width;
67   restart:
68 #endif
69
70     dlg_tab_correct_str(prompt);
71     dlg_button_layout(buttons, &min_width);
72     dlg_auto_size(title, prompt, &height, &width, 2, min_width);
73     dlg_print_size(height, width);
74     dlg_ctl_size(height, width);
75
76     x = dlg_box_x_ordinate(width);
77     y = dlg_box_y_ordinate(height);
78
79 #ifdef KEY_RESIZE
80     if (dialog != 0)
81         dlg_move_window(dialog, height, width, y, x);
82     else
83 #endif
84     {
85         dialog = dlg_new_window(height, width, y, x);
86         dlg_register_window(dialog, "yesno", binding);
87         dlg_register_buttons(dialog, "yesno", buttons);
88     }
89
90     dlg_draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
91     dlg_draw_bottom_box(dialog);
92     dlg_draw_title(dialog, title);
93     dlg_draw_helpline(dialog, FALSE);
94
95     wattrset(dialog, dialog_attr);
96
97     page = height - (1 + 3 * MARGIN);
98     dlg_draw_buttons(dialog,
99                      height - 2 * MARGIN, 0,
100                      buttons, button, FALSE, width);
101
102     while (result == DLG_EXIT_UNKNOWN) {
103         if (show) {
104             last = dlg_print_scrolled(dialog, prompt, offset,
105                                       page, width, TRUE);
106             show = FALSE;
107         }
108         key = dlg_mouse_wgetch(dialog, &fkey);
109         if (dlg_result_key(key, fkey, &result))
110             break;
111         if ((code = dlg_char_to_button(key, buttons)) >= 0) {
112             result = dlg_ok_buttoncode(code);
113             break;
114         }
115         /* handle function keys */
116         if (fkey) {
117             switch (key) {
118             case DLGK_FIELD_NEXT:
119                 button = dlg_next_button(buttons, button);
120                 if (button < 0)
121                     button = 0;
122                 dlg_draw_buttons(dialog,
123                                  height - 2, 0,
124                                  buttons, button,
125                                  FALSE, width);
126                 break;
127             case DLGK_FIELD_PREV:
128                 button = dlg_prev_button(buttons, button);
129                 if (button < 0)
130                     button = 0;
131                 dlg_draw_buttons(dialog,
132                                  height - 2, 0,
133                                  buttons, button,
134                                  FALSE, width);
135                 break;
136             case DLGK_ENTER:
137                 result = dlg_yes_buttoncode(button);
138                 break;
139 #ifdef KEY_RESIZE
140             case KEY_RESIZE:
141                 dlg_clear();
142                 height = req_high;
143                 width = req_wide;
144                 goto restart;
145 #endif
146             default:
147                 if (is_DLGK_MOUSE(key)) {
148                     result = dlg_yes_buttoncode(key - M_EVENT);
149                     if (result < 0)
150                         result = DLG_EXIT_OK;
151                 } else if (dlg_check_scrolled(key, last, page,
152                                               &show, &offset) != 0) {
153                     beep();
154                 }
155                 break;
156             }
157         } else {
158             beep();
159         }
160     }
161
162     dlg_del_window(dialog);
163     dlg_mouse_free_regions();
164     free(prompt);
165     return result;
166 }