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[FreeBSD/FreeBSD.git] / contrib / dialog / msgbox.c
1 /*
2  *  $Id: msgbox.c,v 1.64 2010/01/15 10:50:17 tom Exp $
3  *
4  *  msgbox.c -- implements the message box and info box
5  *
6  *  Copyright 2000-2009,2010    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 message box. Program will pause and display an "OK" button
32  * if the parameter 'pauseopt' is non-zero.
33  */
34 int
35 dialog_msgbox(const char *title, const char *cprompt, int height, int width,
36               int pauseopt)
37 {
38     /* *INDENT-OFF* */
39     static DLG_KEYS_BINDING binding[] = {
40         ENTERKEY_BINDINGS,
41         DLG_KEYS_DATA( DLGK_ENTER,      ' ' ),
42         SCROLLKEY_BINDINGS,
43         DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_DOWN ),
44         DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_RIGHT ),
45         DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ),
46         DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_UP ),
47         DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ),
48         DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_LEFT ),
49         END_KEYS_BINDING
50     };
51     /* *INDENT-ON* */
52
53     int x, y, last = 0, page;
54     int button = 0;
55     int key = 0, fkey;
56     int result = DLG_EXIT_UNKNOWN;
57     WINDOW *dialog = 0;
58     char *prompt = dlg_strclone(cprompt);
59     const char **buttons = dlg_ok_label();
60     int offset = 0;
61     int check;
62     bool show = TRUE;
63     int min_width = (pauseopt == 1 ? 12 : 0);
64
65 #ifdef KEY_RESIZE
66     int req_high = height;
67     int req_wide = width;
68   restart:
69 #endif
70
71     dlg_button_layout(buttons, &min_width);
72
73     dlg_tab_correct_str(prompt);
74     dlg_auto_size(title, prompt, &height, &width,
75                   (pauseopt == 1 ? 2 : 0),
76                   min_width);
77     dlg_print_size(height, width);
78     dlg_ctl_size(height, width);
79
80     x = dlg_box_x_ordinate(width);
81     y = dlg_box_y_ordinate(height);
82
83 #ifdef KEY_RESIZE
84     if (dialog != 0)
85         dlg_move_window(dialog, height, width, y, x);
86     else
87 #endif
88     {
89         dialog = dlg_new_window(height, width, y, x);
90         dlg_register_window(dialog, "msgbox", binding);
91         dlg_register_buttons(dialog, "msgbox", buttons);
92     }
93     page = height - (1 + 3 * MARGIN);
94
95     dlg_mouse_setbase(x, y);
96
97     dlg_draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
98     dlg_draw_title(dialog, title);
99
100     wattrset(dialog, dialog_attr);
101
102     if (pauseopt) {
103         dlg_draw_bottom_box(dialog);
104         mouse_mkbutton(height - 2, width / 2 - 4, 6, '\n');
105         dlg_draw_buttons(dialog, height - 2, 0, buttons, button, FALSE, width);
106
107         while (result == DLG_EXIT_UNKNOWN) {
108             if (show) {
109                 last = dlg_print_scrolled(dialog, prompt, offset,
110                                           page, width, pauseopt);
111                 show = FALSE;
112             }
113             key = dlg_mouse_wgetch(dialog, &fkey);
114             if (dlg_result_key(key, fkey, &result))
115                 break;
116
117             if (!fkey && (check = dlg_char_to_button(key, buttons)) >= 0) {
118                 result = check ? DLG_EXIT_HELP : DLG_EXIT_OK;
119                 break;
120             }
121
122             if (fkey) {
123                 switch (key) {
124 #ifdef KEY_RESIZE
125                 case KEY_RESIZE:
126                     dlg_clear();
127                     height = req_high;
128                     width = req_wide;
129                     show = TRUE;
130                     goto restart;
131 #endif
132                 case DLGK_FIELD_NEXT:
133                     button = dlg_next_button(buttons, button);
134                     if (button < 0)
135                         button = 0;
136                     dlg_draw_buttons(dialog,
137                                      height - 2, 0,
138                                      buttons, button,
139                                      FALSE, width);
140                     break;
141                 case DLGK_FIELD_PREV:
142                     button = dlg_prev_button(buttons, button);
143                     if (button < 0)
144                         button = 0;
145                     dlg_draw_buttons(dialog,
146                                      height - 2, 0,
147                                      buttons, button,
148                                      FALSE, width);
149                     break;
150                 case DLGK_ENTER:
151                     result = button ? DLG_EXIT_HELP : DLG_EXIT_OK;
152                     break;
153                 case DLGK_MOUSE(0):
154                     result = DLG_EXIT_OK;
155                     break;
156                 case DLGK_MOUSE(1):
157                     result = DLG_EXIT_HELP;
158                     break;
159                 default:
160                     if (dlg_check_scrolled(key,
161                                            last,
162                                            page,
163                                            &show,
164                                            &offset) == 0)
165                         break;
166                     beep();
167                     break;
168                 }
169             } else {
170                 beep();
171             }
172         }
173     } else {
174         dlg_print_scrolled(dialog, prompt, offset, page, width, pauseopt);
175         wrefresh(dialog);
176         result = DLG_EXIT_OK;
177     }
178
179     dlg_del_window(dialog);
180     dlg_mouse_free_regions();
181     free(prompt);
182     return result;
183 }