1 /*
2 * $Id: inputbox.c,v 1.93 2021/01/17 16:36:37 tom Exp $
3 *
4 * inputbox.c -- implements the input box
5 *
6 * Copyright 2000-2020,2021 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 #define sTEXT -1
31
32 #define NAVIGATE_BINDINGS \
33 DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_DOWN ), \
34 DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_RIGHT ), \
35 DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ), \
36 DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ), \
37 DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_LEFT ), \
38 DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_UP )
39
40 #define BTN_HIGH 1
41 #define HDR_HIGH 1
42 #define MIN_HIGH (HDR_HIGH + (MARGIN * 2 + 1) + (BTN_HIGH + MARGIN * 2))
43 #define MIN_WIDE 26
44
45 /*
46 * Display a dialog box for entering a string
47 */
48 int
dialog_inputbox(const char * title,const char * cprompt,int height,int width,const char * init,const int password)49 dialog_inputbox(const char *title, const char *cprompt, int height, int width,
50 const char *init, const int password)
51 {
52 /* *INDENT-OFF* */
53 static DLG_KEYS_BINDING binding[] = {
54 HELPKEY_BINDINGS,
55 ENTERKEY_BINDINGS,
56 NAVIGATE_BINDINGS,
57 TOGGLEKEY_BINDINGS,
58 END_KEYS_BINDING
59 };
60 static DLG_KEYS_BINDING binding2[] = {
61 INPUTSTR_BINDINGS,
62 HELPKEY_BINDINGS,
63 ENTERKEY_BINDINGS,
64 NAVIGATE_BINDINGS,
65 /* no TOGGLEKEY_BINDINGS, since that includes space... */
66 END_KEYS_BINDING
67 };
68 /* *INDENT-ON* */
69
70 #ifdef KEY_RESIZE
71 int old_height = height;
72 int old_width = width;
73 #endif
74 int xorg, yorg;
75 int x, y, box_y, box_x, box_width;
76 int show_buttons;
77 int col_offset = 0;
78 int chr_offset = 0;
79 int key, fkey, code;
80 int result = DLG_EXIT_UNKNOWN;
81 int state;
82 bool first;
83 bool edited;
84 char *input;
85 WINDOW *dialog;
86 WINDOW *editor;
87 char *prompt = dlg_strclone(cprompt);
88 const char **buttons = dlg_ok_labels();
89
90 dlg_does_output();
91
92 DLG_TRACE(("# inputbox args:\n"));
93 DLG_TRACE2S("title", title);
94 DLG_TRACE2S("message", cprompt);
95 DLG_TRACE2N("height", height);
96 DLG_TRACE2N("width", width);
97 DLG_TRACE2S("init", init);
98 DLG_TRACE2N("password", password);
99
100 dlg_tab_correct_str(prompt);
101
102 /* Set up the initial value */
103 input = dlg_set_result(init);
104 edited = FALSE;
105
106 #ifdef KEY_RESIZE
107 retry:
108 #endif
109 show_buttons = TRUE;
110 state = dialog_vars.default_button >= 0 ? dlg_default_button() : sTEXT;
111 first = (state == sTEXT);
112 key = fkey = 0;
113
114 if (init != NULL) {
115 dlg_auto_size(title, prompt, &height, &width, MIN_HIGH,
116 MIN(MAX(dlg_count_columns(init) + 7, MIN_WIDE),
117 SCOLS - (dialog_vars.begin_set ?
118 dialog_vars.begin_x : 0)));
119 chr_offset = (int) strlen(init);
120 } else {
121 dlg_auto_size(title, prompt, &height, &width, MIN_HIGH, MIN_WIDE);
122 }
123 dlg_button_layout(buttons, &width);
124 dlg_print_size(height, width);
125 dlg_ctl_size(height, width);
126
127 xorg = dlg_box_x_ordinate(width);
128 yorg = dlg_box_y_ordinate(height);
129
130 dialog = dlg_new_window(height, width, yorg, xorg);
131 dlg_register_window(dialog, "inputbox", binding);
132 dlg_register_buttons(dialog, "inputbox", buttons);
133
134 dlg_mouse_setbase(xorg, yorg);
135
136 dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr);
137 dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr);
138 dlg_draw_title(dialog, title);
139
140 dlg_attrset(dialog, dialog_attr);
141 dlg_draw_helpline(dialog, FALSE);
142 dlg_print_autowrap(dialog, prompt, height, width);
143
144 /* Draw the input field box */
145 box_width = width - 6;
146 getyx(dialog, y, x);
147 (void) x;
148 box_y = y + 2;
149 box_x = (width - box_width) / 2;
150 dlg_mouse_mkregion(y + 1, box_x - 1, 3, box_width + 2, 'i');
151 dlg_draw_box(dialog, y + 1, box_x - 1, 3, box_width + 2,
152 border_attr, border2_attr);
153
154 /* Make a window for the input-field, to associate bindings */
155 editor = dlg_sub_window(dialog, 1, box_width, yorg + box_y, xorg + box_x);
156 dlg_register_window(editor, "inputbox2", binding2);
157
158 if (*input != '\0') {
159 dlg_show_string(editor, input, chr_offset, inputbox_attr,
160 0, 0, box_width, (bool) (password != 0), first);
161 wsyncup(editor);
162 wcursyncup(editor);
163 }
164
165 while (result == DLG_EXIT_UNKNOWN) {
166 /*
167 * The last field drawn determines where the cursor is shown:
168 */
169 if (show_buttons) {
170 show_buttons = FALSE;
171 col_offset = dlg_edit_offset(input, chr_offset, box_width);
172 (void) wmove(dialog, box_y, box_x + col_offset);
173 dlg_draw_buttons(dialog, height - 2, 0, buttons, state, FALSE, width);
174 }
175
176 if (!first) {
177 if (*input != '\0' && !edited) {
178 dlg_show_string(editor, input, chr_offset, inputbox_attr,
179 0, 0, box_width, (bool) (password != 0), first);
180 wmove(editor, 0, chr_offset);
181 wsyncup(editor);
182 wcursyncup(editor);
183 }
184 key = dlg_mouse_wgetch((state == sTEXT) ? editor : dialog, &fkey);
185 if (dlg_result_key(key, fkey, &result)) {
186 if (!dlg_button_key(result, &code, &key, &fkey))
187 break;
188 }
189 }
190
191 /*
192 * Handle mouse clicks first, since we want to know if this is a button,
193 * or something that dlg_edit_string() should handle.
194 */
195 if (fkey
196 && is_DLGK_MOUSE(key)
197 && (code = dlg_ok_buttoncode(key - M_EVENT)) >= 0) {
198 result = code;
199 continue;
200 }
201
202 if (state == sTEXT) { /* Input box selected */
203 int edit = dlg_edit_string(input, &chr_offset, key, fkey, first);
204
205 if (edit) {
206 dlg_show_string(editor, input, chr_offset, inputbox_attr,
207 0, 0, box_width, (bool) (password != 0), first);
208 wsyncup(editor);
209 wcursyncup(editor);
210 first = FALSE;
211 edited = TRUE;
212 continue;
213 } else if (first) {
214 first = FALSE;
215 continue;
216 }
217 }
218
219 /* handle non-functionkeys */
220 if (!fkey && (code = dlg_char_to_button(key, buttons)) >= 0) {
221 dlg_del_window(dialog);
222 result = dlg_ok_buttoncode(code);
223 continue;
224 }
225
226 /* handle functionkeys */
227 if (fkey) {
228 switch (key) {
229 case DLGK_MOUSE('i'): /* mouse enter events */
230 state = 0;
231 /* FALLTHRU */
232 case DLGK_FIELD_PREV:
233 show_buttons = TRUE;
234 state = dlg_prev_ok_buttonindex(state, sTEXT);
235 break;
236 case DLGK_FIELD_NEXT:
237 show_buttons = TRUE;
238 state = dlg_next_ok_buttonindex(state, sTEXT);
239 break;
240 case DLGK_TOGGLE:
241 case DLGK_ENTER:
242 dlg_del_window(dialog);
243 result = (state >= 0) ? dlg_enter_buttoncode(state) : DLG_EXIT_OK;
244 break;
245 case DLGK_LEAVE:
246 if (state >= 0)
247 result = dlg_ok_buttoncode(state);
248 break;
249 #ifdef KEY_RESIZE
250 case KEY_RESIZE:
251 dlg_will_resize(dialog);
252 /* reset data */
253 height = old_height;
254 width = old_width;
255 /* repaint */
256 _dlg_resize_cleanup(dialog);
257 goto retry;
258 #endif
259 default:
260 beep();
261 break;
262 }
263 } else if (key > 0) {
264 beep();
265 }
266 }
267 AddLastKey();
268
269 dlg_unregister_window(editor);
270 dlg_del_window(dialog);
271 dlg_mouse_free_regions();
272 free(prompt);
273 return result;
274 }
275