1 /*
2 * $Id: msgbox.c,v 1.90 2022/04/03 22:38:16 tom Exp $
3 *
4 * msgbox.c -- implements the message box and info box
5 *
6 * Copyright 2000-2020,2022 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 <dlg_internals.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
dialog_msgbox(const char * title,const char * cprompt,int height,int width,int pauseopt)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 HELPKEY_BINDINGS,
41 ENTERKEY_BINDINGS,
42 SCROLLKEY_BINDINGS,
43 TRAVERSE_BINDINGS,
44 END_KEYS_BINDING
45 };
46 /* *INDENT-ON* */
47
48 int x, y, page;
49 int button;
50 int key, fkey;
51 int result = DLG_EXIT_UNKNOWN;
52 WINDOW *dialog = 0;
53 char *prompt;
54 const char **buttons = dlg_ok_label();
55 int offset = 0;
56 bool show = TRUE;
57 int min_width = (pauseopt == 1 ? 12 : 0);
58 bool save_nocancel = dialog_vars.nocancel;
59 #ifdef KEY_RESIZE
60 int req_high;
61 int req_wide;
62 #endif
63
64 DLG_TRACE(("# msgbox args:\n"));
65 DLG_TRACE2S("title", title);
66 DLG_TRACE2S("message", cprompt);
67 DLG_TRACE2N("height", height);
68 DLG_TRACE2N("width", width);
69 DLG_TRACE2N("pauseopt", pauseopt);
70
71 dialog_vars.nocancel = TRUE;
72 button = dlg_default_button();
73
74 #ifdef KEY_RESIZE
75 req_high = height;
76 req_wide = width;
77 restart:
78 #endif
79
80 dlg_button_layout(buttons, &min_width);
81
82 prompt = dlg_strclone(cprompt);
83 dlg_tab_correct_str(prompt);
84 dlg_auto_size(title, prompt, &height, &width,
85 (pauseopt == 1 ? 2 : 0),
86 min_width);
87 dlg_print_size(height, width);
88 dlg_ctl_size(height, width);
89
90 x = dlg_box_x_ordinate(width);
91 y = dlg_box_y_ordinate(height);
92
93 dialog = dlg_new_window(height, width, y, x);
94 dlg_register_window(dialog, "msgbox", binding);
95 dlg_register_buttons(dialog, "msgbox", buttons);
96
97 page = height - (1 + 3 * MARGIN);
98
99 dlg_mouse_setbase(x, y);
100
101 dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr);
102 dlg_draw_title(dialog, title);
103
104 dlg_attrset(dialog, dialog_attr);
105
106 if (pauseopt) {
107 int last = 0;
108
109 dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr);
110 mouse_mkbutton(height - 2, width / 2 - 4, 6, '\n');
111 dlg_draw_buttons(dialog, height - 2, 0, buttons, button, FALSE, width);
112 dlg_draw_helpline(dialog, FALSE);
113
114 while (result == DLG_EXIT_UNKNOWN) {
115 int check;
116
117 if (show) {
118 last = dlg_print_scrolled(dialog, prompt, offset,
119 page, width, pauseopt);
120 dlg_trace_win(dialog);
121 show = FALSE;
122 }
123 key = dlg_mouse_wgetch(dialog, &fkey);
124 if (dlg_result_key(key, fkey, &result)) {
125 if (!dlg_button_key(result, &button, &key, &fkey))
126 break;
127 }
128 if (!fkey && (check = dlg_char_to_button(key, buttons)) >= 0) {
129 result = dlg_ok_buttoncode(check);
130 break;
131 }
132
133 if (fkey) {
134 switch (key) {
135 #ifdef KEY_RESIZE
136 case KEY_RESIZE:
137 dlg_will_resize(dialog);
138 free(prompt);
139 height = req_high;
140 width = req_wide;
141 show = TRUE;
142 _dlg_resize_cleanup(dialog);
143 goto restart;
144 #endif
145 case DLGK_FIELD_NEXT:
146 button = dlg_next_button(buttons, button);
147 if (button < 0)
148 button = 0;
149 dlg_draw_buttons(dialog,
150 height - 2, 0,
151 buttons, button,
152 FALSE, width);
153 break;
154 case DLGK_FIELD_PREV:
155 button = dlg_prev_button(buttons, button);
156 if (button < 0)
157 button = 0;
158 dlg_draw_buttons(dialog,
159 height - 2, 0,
160 buttons, button,
161 FALSE, width);
162 break;
163 case DLGK_ENTER:
164 result = dlg_enter_buttoncode(button);
165 break;
166 case DLGK_LEAVE:
167 result = dlg_ok_buttoncode(button);
168 break;
169 default:
170 if (is_DLGK_MOUSE(key)) {
171 result = dlg_ok_buttoncode(key - M_EVENT);
172 if (result < 0)
173 result = DLG_EXIT_OK;
174 } else if (dlg_check_scrolled(key,
175 last,
176 page,
177 &show,
178 &offset) == 0) {
179 } else {
180 beep();
181 }
182 break;
183 }
184 } else if (key > 0) {
185 beep();
186 }
187 }
188 } else {
189 dlg_print_scrolled(dialog, prompt, offset, page, width, pauseopt);
190 dlg_draw_helpline(dialog, FALSE);
191 wrefresh(dialog);
192 dlg_trace_win(dialog);
193 result = DLG_EXIT_OK;
194 }
195 dlg_add_last_key(-1);
196
197 dlg_del_window(dialog);
198 dlg_mouse_free_regions();
199 free(prompt);
200
201 dialog_vars.nocancel = save_nocancel;
202
203 return result;
204 }
205