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1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * inputbox.c -- implements the input box
4 *
5 * ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
6 * MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
7 */
8
9#include "dialog.h"
10
11char dialog_input_result[MAX_LEN + 1];
12
13/*
14 * Print the termination buttons
15 */
16static void print_buttons(WINDOW * dialog, int height, int width, int selected)
17{
18 int x = width / 2 - 11;
19 int y = height - 2;
20
21 print_button(dialog, " Ok ", y, x, selected == 0);
22 print_button(dialog, " Help ", y, x + 14, selected == 1);
23
24 wmove(dialog, y, x + 1 + 14 * selected);
25 wrefresh(dialog);
26}
27
28/*
29 * Display a dialog box for inputing a string
30 */
31int dialog_inputbox(const char *title, const char *prompt, int height, int width,
32 const char *init)
33{
34 int i, x, y, box_y, box_x, box_width;
35 int input_x = 0, key = 0, button = -1;
36 int show_x, len, pos;
37 char *instr = dialog_input_result;
38 WINDOW *dialog;
39
40 if (!init)
41 instr[0] = '\0';
42 else
43 strcpy(instr, init);
44
45do_resize:
46 if (getmaxy(stdscr) <= (height - INPUTBOX_HEIGTH_MIN))
47 return -ERRDISPLAYTOOSMALL;
48 if (getmaxx(stdscr) <= (width - INPUTBOX_WIDTH_MIN))
49 return -ERRDISPLAYTOOSMALL;
50
51 /* center dialog box on screen */
52 x = (getmaxx(stdscr) - width) / 2;
53 y = (getmaxy(stdscr) - height) / 2;
54
55 draw_shadow(stdscr, y, x, height, width);
56
57 dialog = newwin(height, width, y, x);
58 keypad(dialog, TRUE);
59
60 draw_box(dialog, 0, 0, height, width,
61 dlg.dialog.atr, dlg.border.atr);
62 wattrset(dialog, dlg.border.atr);
63 mvwaddch(dialog, height - 3, 0, ACS_LTEE);
64 for (i = 0; i < width - 2; i++)
65 waddch(dialog, ACS_HLINE);
66 wattrset(dialog, dlg.dialog.atr);
67 waddch(dialog, ACS_RTEE);
68
69 print_title(dialog, title, width);
70
71 wattrset(dialog, dlg.dialog.atr);
72 print_autowrap(dialog, prompt, width - 2, 1, 3);
73
74 /* Draw the input field box */
75 box_width = width - 6;
76 getyx(dialog, y, x);
77 box_y = y + 2;
78 box_x = (width - box_width) / 2;
79 draw_box(dialog, y + 1, box_x - 1, 3, box_width + 2,
80 dlg.dialog.atr, dlg.border.atr);
81
82 print_buttons(dialog, height, width, 0);
83
84 /* Set up the initial value */
85 wmove(dialog, box_y, box_x);
86 wattrset(dialog, dlg.inputbox.atr);
87
88 len = strlen(instr);
89 pos = len;
90
91 if (len >= box_width) {
92 show_x = len - box_width + 1;
93 input_x = box_width - 1;
94 for (i = 0; i < box_width - 1; i++)
95 waddch(dialog, instr[show_x + i]);
96 } else {
97 show_x = 0;
98 input_x = len;
99 waddstr(dialog, instr);
100 }
101
102 wmove(dialog, box_y, box_x + input_x);
103
104 wrefresh(dialog);
105
106 while (key != KEY_ESC) {
107 key = wgetch(dialog);
108
109 if (button == -1) { /* Input box selected */
110 switch (key) {
111 case TAB:
112 case KEY_UP:
113 case KEY_DOWN:
114 break;
115 case KEY_BACKSPACE:
116 case 8: /* ^H */
117 case 127: /* ^? */
118 if (pos) {
119 wattrset(dialog, dlg.inputbox.atr);
120 if (input_x == 0) {
121 show_x--;
122 } else
123 input_x--;
124
125 if (pos < len) {
126 for (i = pos - 1; i < len; i++) {
127 instr[i] = instr[i+1];
128 }
129 }
130
131 pos--;
132 len--;
133 instr[len] = '\0';
134 wmove(dialog, box_y, box_x);
135 for (i = 0; i < box_width; i++) {
136 if (!instr[show_x + i]) {
137 waddch(dialog, ' ');
138 break;
139 }
140 waddch(dialog, instr[show_x + i]);
141 }
142 wmove(dialog, box_y, input_x + box_x);
143 wrefresh(dialog);
144 }
145 continue;
146 case KEY_LEFT:
147 if (pos > 0) {
148 if (input_x > 0) {
149 wmove(dialog, box_y, --input_x + box_x);
150 } else if (input_x == 0) {
151 show_x--;
152 wmove(dialog, box_y, box_x);
153 for (i = 0; i < box_width; i++) {
154 if (!instr[show_x + i]) {
155 waddch(dialog, ' ');
156 break;
157 }
158 waddch(dialog, instr[show_x + i]);
159 }
160 wmove(dialog, box_y, box_x);
161 }
162 pos--;
163 }
164 continue;
165 case KEY_RIGHT:
166 if (pos < len) {
167 if (input_x < box_width - 1) {
168 wmove(dialog, box_y, ++input_x + box_x);
169 } else if (input_x == box_width - 1) {
170 show_x++;
171 wmove(dialog, box_y, box_x);
172 for (i = 0; i < box_width; i++) {
173 if (!instr[show_x + i]) {
174 waddch(dialog, ' ');
175 break;
176 }
177 waddch(dialog, instr[show_x + i]);
178 }
179 wmove(dialog, box_y, input_x + box_x);
180 }
181 pos++;
182 }
183 continue;
184 default:
185 if (key < 0x100 && isprint(key)) {
186 if (len < MAX_LEN) {
187 wattrset(dialog, dlg.inputbox.atr);
188 if (pos < len) {
189 for (i = len; i > pos; i--)
190 instr[i] = instr[i-1];
191 instr[pos] = key;
192 } else {
193 instr[len] = key;
194 }
195 pos++;
196 len++;
197 instr[len] = '\0';
198
199 if (input_x == box_width - 1) {
200 show_x++;
201 } else {
202 input_x++;
203 }
204
205 wmove(dialog, box_y, box_x);
206 for (i = 0; i < box_width; i++) {
207 if (!instr[show_x + i]) {
208 waddch(dialog, ' ');
209 break;
210 }
211 waddch(dialog, instr[show_x + i]);
212 }
213 wmove(dialog, box_y, input_x + box_x);
214 wrefresh(dialog);
215 } else
216 flash(); /* Alarm user about overflow */
217 continue;
218 }
219 }
220 }
221 switch (key) {
222 case 'O':
223 case 'o':
224 delwin(dialog);
225 return 0;
226 case 'H':
227 case 'h':
228 delwin(dialog);
229 return 1;
230 case KEY_UP:
231 case KEY_LEFT:
232 switch (button) {
233 case -1:
234 button = 1; /* Indicates "Help" button is selected */
235 print_buttons(dialog, height, width, 1);
236 break;
237 case 0:
238 button = -1; /* Indicates input box is selected */
239 print_buttons(dialog, height, width, 0);
240 wmove(dialog, box_y, box_x + input_x);
241 wrefresh(dialog);
242 break;
243 case 1:
244 button = 0; /* Indicates "OK" button is selected */
245 print_buttons(dialog, height, width, 0);
246 break;
247 }
248 break;
249 case TAB:
250 case KEY_DOWN:
251 case KEY_RIGHT:
252 switch (button) {
253 case -1:
254 button = 0; /* Indicates "OK" button is selected */
255 print_buttons(dialog, height, width, 0);
256 break;
257 case 0:
258 button = 1; /* Indicates "Help" button is selected */
259 print_buttons(dialog, height, width, 1);
260 break;
261 case 1:
262 button = -1; /* Indicates input box is selected */
263 print_buttons(dialog, height, width, 0);
264 wmove(dialog, box_y, box_x + input_x);
265 wrefresh(dialog);
266 break;
267 }
268 break;
269 case ' ':
270 case '\n':
271 delwin(dialog);
272 return (button == -1 ? 0 : button);
273 case 'X':
274 case 'x':
275 key = KEY_ESC;
276 break;
277 case KEY_ESC:
278 key = on_key_esc(dialog);
279 break;
280 case KEY_RESIZE:
281 delwin(dialog);
282 on_key_resize();
283 goto do_resize;
284 }
285 }
286
287 delwin(dialog);
288 return KEY_ESC; /* ESC pressed */
289}
1/*
2 * inputbox.c -- implements the input box
3 *
4 * ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
5 * MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21
22#include "dialog.h"
23
24char dialog_input_result[MAX_LEN + 1];
25
26/*
27 * Print the termination buttons
28 */
29static void print_buttons(WINDOW * dialog, int height, int width, int selected)
30{
31 int x = width / 2 - 11;
32 int y = height - 2;
33
34 print_button(dialog, gettext(" Ok "), y, x, selected == 0);
35 print_button(dialog, gettext(" Help "), y, x + 14, selected == 1);
36
37 wmove(dialog, y, x + 1 + 14 * selected);
38 wrefresh(dialog);
39}
40
41/*
42 * Display a dialog box for inputing a string
43 */
44int dialog_inputbox(const char *title, const char *prompt, int height, int width,
45 const char *init)
46{
47 int i, x, y, box_y, box_x, box_width;
48 int input_x = 0, scroll = 0, key = 0, button = -1;
49 char *instr = dialog_input_result;
50 WINDOW *dialog;
51
52 if (!init)
53 instr[0] = '\0';
54 else
55 strcpy(instr, init);
56
57do_resize:
58 if (getmaxy(stdscr) <= (height - 2))
59 return -ERRDISPLAYTOOSMALL;
60 if (getmaxx(stdscr) <= (width - 2))
61 return -ERRDISPLAYTOOSMALL;
62
63 /* center dialog box on screen */
64 x = (COLS - width) / 2;
65 y = (LINES - height) / 2;
66
67 draw_shadow(stdscr, y, x, height, width);
68
69 dialog = newwin(height, width, y, x);
70 keypad(dialog, TRUE);
71
72 draw_box(dialog, 0, 0, height, width,
73 dlg.dialog.atr, dlg.border.atr);
74 wattrset(dialog, dlg.border.atr);
75 mvwaddch(dialog, height - 3, 0, ACS_LTEE);
76 for (i = 0; i < width - 2; i++)
77 waddch(dialog, ACS_HLINE);
78 wattrset(dialog, dlg.dialog.atr);
79 waddch(dialog, ACS_RTEE);
80
81 print_title(dialog, title, width);
82
83 wattrset(dialog, dlg.dialog.atr);
84 print_autowrap(dialog, prompt, width - 2, 1, 3);
85
86 /* Draw the input field box */
87 box_width = width - 6;
88 getyx(dialog, y, x);
89 box_y = y + 2;
90 box_x = (width - box_width) / 2;
91 draw_box(dialog, y + 1, box_x - 1, 3, box_width + 2,
92 dlg.dialog.atr, dlg.border.atr);
93
94 print_buttons(dialog, height, width, 0);
95
96 /* Set up the initial value */
97 wmove(dialog, box_y, box_x);
98 wattrset(dialog, dlg.inputbox.atr);
99
100 input_x = strlen(instr);
101
102 if (input_x >= box_width) {
103 scroll = input_x - box_width + 1;
104 input_x = box_width - 1;
105 for (i = 0; i < box_width - 1; i++)
106 waddch(dialog, instr[scroll + i]);
107 } else {
108 waddstr(dialog, instr);
109 }
110
111 wmove(dialog, box_y, box_x + input_x);
112
113 wrefresh(dialog);
114
115 while (key != KEY_ESC) {
116 key = wgetch(dialog);
117
118 if (button == -1) { /* Input box selected */
119 switch (key) {
120 case TAB:
121 case KEY_UP:
122 case KEY_DOWN:
123 break;
124 case KEY_LEFT:
125 continue;
126 case KEY_RIGHT:
127 continue;
128 case KEY_BACKSPACE:
129 case 127:
130 if (input_x || scroll) {
131 wattrset(dialog, dlg.inputbox.atr);
132 if (!input_x) {
133 scroll = scroll < box_width - 1 ? 0 : scroll - (box_width - 1);
134 wmove(dialog, box_y, box_x);
135 for (i = 0; i < box_width; i++)
136 waddch(dialog,
137 instr[scroll + input_x + i] ?
138 instr[scroll + input_x + i] : ' ');
139 input_x = strlen(instr) - scroll;
140 } else
141 input_x--;
142 instr[scroll + input_x] = '\0';
143 mvwaddch(dialog, box_y, input_x + box_x, ' ');
144 wmove(dialog, box_y, input_x + box_x);
145 wrefresh(dialog);
146 }
147 continue;
148 default:
149 if (key < 0x100 && isprint(key)) {
150 if (scroll + input_x < MAX_LEN) {
151 wattrset(dialog, dlg.inputbox.atr);
152 instr[scroll + input_x] = key;
153 instr[scroll + input_x + 1] = '\0';
154 if (input_x == box_width - 1) {
155 scroll++;
156 wmove(dialog, box_y, box_x);
157 for (i = 0; i < box_width - 1; i++)
158 waddch(dialog, instr [scroll + i]);
159 } else {
160 wmove(dialog, box_y, input_x++ + box_x);
161 waddch(dialog, key);
162 }
163 wrefresh(dialog);
164 } else
165 flash(); /* Alarm user about overflow */
166 continue;
167 }
168 }
169 }
170 switch (key) {
171 case 'O':
172 case 'o':
173 delwin(dialog);
174 return 0;
175 case 'H':
176 case 'h':
177 delwin(dialog);
178 return 1;
179 case KEY_UP:
180 case KEY_LEFT:
181 switch (button) {
182 case -1:
183 button = 1; /* Indicates "Help" button is selected */
184 print_buttons(dialog, height, width, 1);
185 break;
186 case 0:
187 button = -1; /* Indicates input box is selected */
188 print_buttons(dialog, height, width, 0);
189 wmove(dialog, box_y, box_x + input_x);
190 wrefresh(dialog);
191 break;
192 case 1:
193 button = 0; /* Indicates "OK" button is selected */
194 print_buttons(dialog, height, width, 0);
195 break;
196 }
197 break;
198 case TAB:
199 case KEY_DOWN:
200 case KEY_RIGHT:
201 switch (button) {
202 case -1:
203 button = 0; /* Indicates "OK" button is selected */
204 print_buttons(dialog, height, width, 0);
205 break;
206 case 0:
207 button = 1; /* Indicates "Help" button is selected */
208 print_buttons(dialog, height, width, 1);
209 break;
210 case 1:
211 button = -1; /* Indicates input box is selected */
212 print_buttons(dialog, height, width, 0);
213 wmove(dialog, box_y, box_x + input_x);
214 wrefresh(dialog);
215 break;
216 }
217 break;
218 case ' ':
219 case '\n':
220 delwin(dialog);
221 return (button == -1 ? 0 : button);
222 case 'X':
223 case 'x':
224 key = KEY_ESC;
225 break;
226 case KEY_ESC:
227 key = on_key_esc(dialog);
228 break;
229 case KEY_RESIZE:
230 delwin(dialog);
231 on_key_resize();
232 goto do_resize;
233 }
234 }
235
236 delwin(dialog);
237 return KEY_ESC; /* ESC pressed */
238}