1 /*
2 * $Id: inputbox.c,v 1.95 2021/05/30 18:41:54 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 + 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 int partauto;
83 bool first;
84 bool edited;
85 char *input;
86 WINDOW *dialog;
87 WINDOW *editor;
88 char *prompt = dlg_strclone(cprompt);
89 const char **buttons = dlg_ok_labels();
90
91 dlg_does_output();
92
93 DLG_TRACE(("# inputbox args:\n"));
94 DLG_TRACE2S("title", title);
95 DLG_TRACE2S("message", cprompt);
96 DLG_TRACE2N("height", height);
97 DLG_TRACE2N("width", width);
98 DLG_TRACE2S("init", init);
99 DLG_TRACE2N("password", password);
100
101 dlg_tab_correct_str(prompt);
102
103 /* Set up the initial value */
104 input = dlg_set_result(init);
105 edited = FALSE;
106
107 #ifdef KEY_RESIZE
108 retry:
109 #endif
110 show_buttons = TRUE;
111 state = dialog_vars.default_button >= 0 ? dlg_default_button() : sTEXT;
112 first = (state == sTEXT);
113 key = fkey = 0;
114
115 partauto = ((height == 0) ^ (width == 0));
116 if (init != NULL) {
117 dlg_auto_size(title, prompt,
118 &height, &width,
119 MIN_HIGH + partauto,
120 MIN(MAX(dlg_count_columns(init) + 7, MIN_WIDE),
121 SCOLS - (dialog_vars.begin_set ?
122 dialog_vars.begin_x : 0)));
123 chr_offset = (int) strlen(init);
124 } else {
125 dlg_auto_size(title, prompt,
126 &height, &width,
127 MIN_HIGH + partauto,
128 MIN_WIDE);
129 }
130 dlg_button_layout(buttons, &width);
131 dlg_print_size(height, width);
132 dlg_ctl_size(height, width);
133
134 xorg = dlg_box_x_ordinate(width);
135 yorg = dlg_box_y_ordinate(height);
136
137 dialog = dlg_new_window(height, width, yorg, xorg);
138 dlg_register_window(dialog, "inputbox", binding);
139 dlg_register_buttons(dialog, "inputbox", buttons);
140
141 dlg_mouse_setbase(xorg, yorg);
142
143 dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr);
144 dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr);
145 dlg_draw_title(dialog, title);
146
147 dlg_attrset(dialog, dialog_attr);
148 dlg_draw_helpline(dialog, FALSE);
149 dlg_print_autowrap(dialog, prompt, height, width);
150
151 /* Draw the input field box */
152 box_width = width - 6;
153 getyx(dialog, y, x);
154 (void) x;
155 box_y = y + 2;
156 box_x = (width - box_width) / 2;
157 dlg_mouse_mkregion(y + 1, box_x - 1, 3, box_width + 2, 'i');
158 dlg_draw_box(dialog, y + 1, box_x - 1, 3, box_width + 2,
159 border_attr, border2_attr);
160
161 /* Make a window for the input-field, to associate bindings */
162 editor = dlg_sub_window(dialog, 1, box_width, yorg + box_y, xorg + box_x);
163 dlg_register_window(editor, "inputbox2", binding2);
164
165 if (*input != '\0') {
166 dlg_show_string(editor, input, chr_offset, inputbox_attr,
167 0, 0, box_width, (bool) (password != 0), first);
168 wsyncup(editor);
169 wcursyncup(editor);
170 }
171
172 while (result == DLG_EXIT_UNKNOWN) {
173 /*
174 * The last field drawn determines where the cursor is shown:
175 */
176 if (show_buttons) {
177 show_buttons = FALSE;
178 col_offset = dlg_edit_offset(input, chr_offset, box_width);
179 (void) wmove(dialog, box_y, box_x + col_offset);
180 dlg_draw_buttons(dialog, height - 2, 0, buttons, state, FALSE, width);
181 }
182
183 if (!first) {
184 if (*input != '\0' && !edited) {
185 dlg_show_string(editor, input, chr_offset, inputbox_attr,
186 0, 0, box_width, (bool) (password != 0), first);
187 wmove(editor, 0, chr_offset);
188 wsyncup(editor);
189 wcursyncup(editor);
190 }
191 key = dlg_mouse_wgetch((state == sTEXT) ? editor : dialog, &fkey);
192 if (dlg_result_key(key, fkey, &result)) {
193 if (!dlg_button_key(result, &code, &key, &fkey))
194 break;
195 }
196 }
197
198 /*
199 * Handle mouse clicks first, since we want to know if this is a button,
200 * or something that dlg_edit_string() should handle.
201 */
202 if (fkey
203 && is_DLGK_MOUSE(key)
204 && (code = dlg_ok_buttoncode(key - M_EVENT)) >= 0) {
205 result = code;
206 continue;
207 }
208
209 if (state == sTEXT) { /* Input box selected */
210 int edit = dlg_edit_string(input, &chr_offset, key, fkey, first);
211
212 if (edit) {
213 dlg_show_string(editor, input, chr_offset, inputbox_attr,
214 0, 0, box_width, (bool) (password != 0), first);
215 wsyncup(editor);
216 wcursyncup(editor);
217 first = FALSE;
218 edited = TRUE;
219 continue;
220 } else if (first) {
221 first = FALSE;
222 continue;
223 }
224 }
225
226 /* handle non-functionkeys */
227 if (!fkey && (code = dlg_char_to_button(key, buttons)) >= 0) {
228 dlg_del_window(dialog);
229 result = dlg_ok_buttoncode(code);
230 continue;
231 }
232
233 /* handle functionkeys */
234 if (fkey) {
235 switch (key) {
236 case DLGK_MOUSE('i'): /* mouse enter events */
237 state = 0;
238 /* FALLTHRU */
239 case DLGK_FIELD_PREV:
240 show_buttons = TRUE;
241 state = dlg_prev_ok_buttonindex(state, sTEXT);
242 break;
243 case DLGK_FIELD_NEXT:
244 show_buttons = TRUE;
245 state = dlg_next_ok_buttonindex(state, sTEXT);
246 break;
247 case DLGK_TOGGLE:
248 case DLGK_ENTER:
249 dlg_del_window(dialog);
250 result = (state >= 0) ? dlg_enter_buttoncode(state) : DLG_EXIT_OK;
251 break;
252 case DLGK_LEAVE:
253 if (state >= 0)
254 result = dlg_ok_buttoncode(state);
255 break;
256 #ifdef KEY_RESIZE
257 case KEY_RESIZE:
258 dlg_will_resize(dialog);
259 /* reset data */
260 height = old_height;
261 width = old_width;
262 /* repaint */
263 _dlg_resize_cleanup(dialog);
264 goto retry;
265 #endif
266 default:
267 beep();
268 break;
269 }
270 } else if (key > 0) {
271 beep();
272 }
273 }
274 AddLastKey();
275
276 dlg_unregister_window(editor);
277 dlg_del_window(dialog);
278 dlg_mouse_free_regions();
279 free(prompt);
280 return result;
281 }
282