1 /*
2 * $Id: yesno.c,v 1.62 2018/06/19 22:57:01 tom Exp $
3 *
4 * yesno.c -- implements the yes/no box
5 *
6 * Copyright 1999-2012,2018 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
dialog_yesno(const char * title,const char * cprompt,int height,int width)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 SCROLLKEY_BINDINGS,
41 TRAVERSE_BINDINGS,
42 END_KEYS_BINDING
43 };
44 /* *INDENT-ON* */
45
46 int x, y;
47 int key = 0, fkey;
48 int code;
49 int button = dlg_default_button();
50 WINDOW *dialog = 0;
51 int result = DLG_EXIT_UNKNOWN;
52 char *prompt;
53 const char **buttons = dlg_yes_labels();
54 int min_width = 25;
55 bool show = TRUE;
56 int page, last = 0, offset = 0;
57
58 #ifdef KEY_RESIZE
59 int req_high = height;
60 int req_wide = width;
61 #endif
62
63 DLG_TRACE(("# yesno args:\n"));
64 DLG_TRACE2S("title", title);
65 DLG_TRACE2S("message", cprompt);
66 DLG_TRACE2N("height", height);
67 DLG_TRACE2N("width", width);
68
69 #ifdef KEY_RESIZE
70 restart:
71 #endif
72 prompt = dlg_strclone(cprompt);
73 dlg_tab_correct_str(prompt);
74 dlg_button_layout(buttons, &min_width);
75 dlg_auto_size(title, prompt, &height, &width, 2, min_width);
76 dlg_print_size(height, width);
77 dlg_ctl_size(height, width);
78
79 x = dlg_box_x_ordinate(width);
80 y = dlg_box_y_ordinate(height);
81
82 #ifdef KEY_RESIZE
83 if (dialog != 0)
84 dlg_move_window(dialog, height, width, y, x);
85 else
86 #endif
87 {
88 dialog = dlg_new_window(height, width, y, x);
89 dlg_register_window(dialog, "yesno", binding);
90 dlg_register_buttons(dialog, "yesno", buttons);
91 }
92
93 dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr);
94 dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr);
95 dlg_draw_title(dialog, title);
96 dlg_draw_helpline(dialog, FALSE);
97
98 dlg_attrset(dialog, dialog_attr);
99
100 page = height - (1 + 3 * MARGIN);
101 dlg_draw_buttons(dialog,
102 height - 2 * MARGIN, 0,
103 buttons, button, FALSE, width);
104
105 while (result == DLG_EXIT_UNKNOWN) {
106 if (show) {
107 last = dlg_print_scrolled(dialog, prompt, offset,
108 page, width, TRUE);
109 dlg_trace_win(dialog);
110 show = FALSE;
111 }
112 key = dlg_mouse_wgetch(dialog, &fkey);
113 if (dlg_result_key(key, fkey, &result))
114 break;
115 if ((code = dlg_char_to_button(key, buttons)) >= 0) {
116 result = dlg_ok_buttoncode(code);
117 break;
118 }
119 /* handle function keys */
120 if (fkey) {
121 switch (key) {
122 case DLGK_FIELD_NEXT:
123 button = dlg_next_button(buttons, button);
124 if (button < 0)
125 button = 0;
126 dlg_draw_buttons(dialog,
127 height - 2, 0,
128 buttons, button,
129 FALSE, width);
130 break;
131 case DLGK_FIELD_PREV:
132 button = dlg_prev_button(buttons, button);
133 if (button < 0)
134 button = 0;
135 dlg_draw_buttons(dialog,
136 height - 2, 0,
137 buttons, button,
138 FALSE, width);
139 break;
140 case DLGK_ENTER:
141 result = dlg_yes_buttoncode(button);
142 break;
143 #ifdef KEY_RESIZE
144 case KEY_RESIZE:
145 dlg_will_resize(dialog);
146 dlg_clear();
147 free(prompt);
148 height = req_high;
149 width = req_wide;
150 show = TRUE;
151 goto restart;
152 #endif
153 default:
154 if (is_DLGK_MOUSE(key)) {
155 result = dlg_yes_buttoncode(key - M_EVENT);
156 if (result < 0)
157 result = DLG_EXIT_OK;
158 } else if (dlg_check_scrolled(key, last, page,
159 &show, &offset) != 0) {
160 beep();
161 }
162 break;
163 }
164 } else {
165 beep();
166 }
167 }
168
169 dlg_del_window(dialog);
170 dlg_mouse_free_regions();
171 free(prompt);
172 return result;
173 }
174