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1da177e4 LT |
1 | /* |
2 | * checklist.c -- implements the checklist box | |
3 | * | |
4 | * ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk) | |
5 | * Stuart Herbert - S.Herbert@sheffield.ac.uk: radiolist extension | |
6 | * Alessandro Rubini - rubini@ipvvis.unipv.it: merged the two | |
7 | * MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com) | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU General Public License | |
11 | * as published by the Free Software Foundation; either version 2 | |
12 | * of the License, or (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
22 | */ | |
23 | ||
24 | #include "dialog.h" | |
25 | ||
00213b17 | 26 | static int list_width, check_x, item_x; |
1da177e4 LT |
27 | |
28 | /* | |
29 | * Print list item | |
30 | */ | |
dec69da8 SR |
31 | static void print_item(WINDOW * win, const char *item, int status, int choice, |
32 | int selected) | |
1da177e4 | 33 | { |
b1c5f1c6 SR |
34 | int i; |
35 | ||
36 | /* Clear 'residue' of last item */ | |
37 | wattrset(win, menubox_attr); | |
38 | wmove(win, choice, 0); | |
39 | for (i = 0; i < list_width; i++) | |
40 | waddch(win, ' '); | |
41 | ||
42 | wmove(win, choice, check_x); | |
43 | wattrset(win, selected ? check_selected_attr : check_attr); | |
00213b17 | 44 | wprintw(win, "(%c)", status ? 'X' : ' '); |
b1c5f1c6 SR |
45 | |
46 | wattrset(win, selected ? tag_selected_attr : tag_attr); | |
47 | mvwaddch(win, choice, item_x, item[0]); | |
48 | wattrset(win, selected ? item_selected_attr : item_attr); | |
49 | waddstr(win, (char *)item + 1); | |
50 | if (selected) { | |
51 | wmove(win, choice, check_x + 1); | |
52 | wrefresh(win); | |
53 | } | |
1da177e4 LT |
54 | } |
55 | ||
56 | /* | |
57 | * Print the scroll indicators. | |
58 | */ | |
dec69da8 | 59 | static void print_arrows(WINDOW * win, int choice, int item_no, int scroll, |
b1c5f1c6 | 60 | int y, int x, int height) |
1da177e4 | 61 | { |
b1c5f1c6 SR |
62 | wmove(win, y, x); |
63 | ||
64 | if (scroll > 0) { | |
65 | wattrset(win, uarrow_attr); | |
66 | waddch(win, ACS_UARROW); | |
67 | waddstr(win, "(-)"); | |
68 | } else { | |
69 | wattrset(win, menubox_attr); | |
70 | waddch(win, ACS_HLINE); | |
71 | waddch(win, ACS_HLINE); | |
72 | waddch(win, ACS_HLINE); | |
73 | waddch(win, ACS_HLINE); | |
74 | } | |
75 | ||
76 | y = y + height + 1; | |
77 | wmove(win, y, x); | |
78 | ||
79 | if ((height < item_no) && (scroll + choice < item_no - 1)) { | |
80 | wattrset(win, darrow_attr); | |
81 | waddch(win, ACS_DARROW); | |
82 | waddstr(win, "(+)"); | |
83 | } else { | |
84 | wattrset(win, menubox_border_attr); | |
85 | waddch(win, ACS_HLINE); | |
86 | waddch(win, ACS_HLINE); | |
87 | waddch(win, ACS_HLINE); | |
88 | waddch(win, ACS_HLINE); | |
89 | } | |
1da177e4 LT |
90 | } |
91 | ||
92 | /* | |
93 | * Display the termination buttons | |
94 | */ | |
b1c5f1c6 | 95 | static void print_buttons(WINDOW * dialog, int height, int width, int selected) |
1da177e4 | 96 | { |
b1c5f1c6 SR |
97 | int x = width / 2 - 11; |
98 | int y = height - 2; | |
1da177e4 | 99 | |
b1c5f1c6 SR |
100 | print_button(dialog, "Select", y, x, selected == 0); |
101 | print_button(dialog, " Help ", y, x + 14, selected == 1); | |
1da177e4 | 102 | |
b1c5f1c6 SR |
103 | wmove(dialog, y, x + 1 + 14 * selected); |
104 | wrefresh(dialog); | |
1da177e4 LT |
105 | } |
106 | ||
107 | /* | |
108 | * Display a dialog box with a list of options that can be turned on or off | |
00213b17 | 109 | * in the style of radiolist (only one option turned on at a time). |
1da177e4 | 110 | */ |
dec69da8 SR |
111 | int dialog_checklist(const char *title, const char *prompt, int height, |
112 | int width, int list_height, int item_no, | |
00213b17 | 113 | const char *const *items) |
1da177e4 | 114 | { |
b1c5f1c6 SR |
115 | int i, x, y, box_x, box_y; |
116 | int key = 0, button = 0, choice = 0, scroll = 0, max_choice, *status; | |
117 | WINDOW *dialog, *list; | |
118 | ||
b1c5f1c6 SR |
119 | /* Allocate space for storing item on/off status */ |
120 | if ((status = malloc(sizeof(int) * item_no)) == NULL) { | |
121 | endwin(); | |
122 | fprintf(stderr, | |
123 | "\nCan't allocate memory in dialog_checklist().\n"); | |
124 | exit(-1); | |
1da177e4 | 125 | } |
1da177e4 | 126 | |
b1c5f1c6 SR |
127 | /* Initializes status */ |
128 | for (i = 0; i < item_no; i++) { | |
129 | status[i] = !strcasecmp(items[i * 3 + 2], "on"); | |
130 | if ((!choice && status[i]) | |
131 | || !strcasecmp(items[i * 3 + 2], "selected")) | |
132 | choice = i + 1; | |
133 | } | |
134 | if (choice) | |
135 | choice--; | |
136 | ||
137 | max_choice = MIN(list_height, item_no); | |
138 | ||
139 | /* center dialog box on screen */ | |
140 | x = (COLS - width) / 2; | |
141 | y = (LINES - height) / 2; | |
142 | ||
143 | draw_shadow(stdscr, y, x, height, width); | |
144 | ||
145 | dialog = newwin(height, width, y, x); | |
146 | keypad(dialog, TRUE); | |
147 | ||
148 | draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr); | |
149 | wattrset(dialog, border_attr); | |
150 | mvwaddch(dialog, height - 3, 0, ACS_LTEE); | |
151 | for (i = 0; i < width - 2; i++) | |
152 | waddch(dialog, ACS_HLINE); | |
153 | wattrset(dialog, dialog_attr); | |
154 | waddch(dialog, ACS_RTEE); | |
155 | ||
fa7009d5 | 156 | print_title(dialog, title, width); |
b1c5f1c6 SR |
157 | |
158 | wattrset(dialog, dialog_attr); | |
159 | print_autowrap(dialog, prompt, width - 2, 1, 3); | |
160 | ||
161 | list_width = width - 6; | |
162 | box_y = height - list_height - 5; | |
163 | box_x = (width - list_width) / 2 - 1; | |
164 | ||
165 | /* create new window for the list */ | |
dec69da8 SR |
166 | list = subwin(dialog, list_height, list_width, y + box_y + 1, |
167 | x + box_x + 1); | |
b1c5f1c6 SR |
168 | |
169 | keypad(list, TRUE); | |
170 | ||
171 | /* draw a box around the list items */ | |
172 | draw_box(dialog, box_y, box_x, list_height + 2, list_width + 2, | |
dec69da8 | 173 | menubox_border_attr, menubox_attr); |
b1c5f1c6 SR |
174 | |
175 | /* Find length of longest item in order to center checklist */ | |
176 | check_x = 0; | |
177 | for (i = 0; i < item_no; i++) | |
178 | check_x = MAX(check_x, +strlen(items[i * 3 + 1]) + 4); | |
179 | ||
180 | check_x = (list_width - check_x) / 2; | |
181 | item_x = check_x + 4; | |
182 | ||
183 | if (choice >= list_height) { | |
184 | scroll = choice - list_height + 1; | |
185 | choice -= scroll; | |
186 | } | |
187 | ||
188 | /* Print the list */ | |
189 | for (i = 0; i < max_choice; i++) { | |
190 | print_item(list, items[(scroll + i) * 3 + 1], | |
191 | status[i + scroll], i, i == choice); | |
1da177e4 LT |
192 | } |
193 | ||
b1c5f1c6 SR |
194 | print_arrows(dialog, choice, item_no, scroll, |
195 | box_y, box_x + check_x + 5, list_height); | |
196 | ||
197 | print_buttons(dialog, height, width, 0); | |
198 | ||
199 | wnoutrefresh(list); | |
200 | wnoutrefresh(dialog); | |
201 | doupdate(); | |
202 | ||
203 | while (key != ESC) { | |
204 | key = wgetch(dialog); | |
205 | ||
206 | for (i = 0; i < max_choice; i++) | |
207 | if (toupper(key) == | |
208 | toupper(items[(scroll + i) * 3 + 1][0])) | |
209 | break; | |
210 | ||
211 | if (i < max_choice || key == KEY_UP || key == KEY_DOWN || | |
212 | key == '+' || key == '-') { | |
213 | if (key == KEY_UP || key == '-') { | |
214 | if (!choice) { | |
215 | if (!scroll) | |
216 | continue; | |
217 | /* Scroll list down */ | |
218 | if (list_height > 1) { | |
219 | /* De-highlight current first item */ | |
dec69da8 SR |
220 | print_item(list, items[scroll * 3 + 1], |
221 | status[scroll], 0, FALSE); | |
b1c5f1c6 SR |
222 | scrollok(list, TRUE); |
223 | wscrl(list, -1); | |
224 | scrollok(list, FALSE); | |
225 | } | |
226 | scroll--; | |
dec69da8 | 227 | print_item(list, items[scroll * 3 + 1], status[scroll], 0, TRUE); |
b1c5f1c6 SR |
228 | wnoutrefresh(list); |
229 | ||
230 | print_arrows(dialog, choice, item_no, | |
dec69da8 | 231 | scroll, box_y, box_x + check_x + 5, list_height); |
b1c5f1c6 SR |
232 | |
233 | wrefresh(dialog); | |
234 | ||
235 | continue; /* wait for another key press */ | |
236 | } else | |
237 | i = choice - 1; | |
238 | } else if (key == KEY_DOWN || key == '+') { | |
239 | if (choice == max_choice - 1) { | |
240 | if (scroll + choice >= item_no - 1) | |
241 | continue; | |
242 | /* Scroll list up */ | |
243 | if (list_height > 1) { | |
244 | /* De-highlight current last item before scrolling up */ | |
dec69da8 SR |
245 | print_item(list, items[(scroll + max_choice - 1) * 3 + 1], |
246 | status[scroll + max_choice - 1], | |
247 | max_choice - 1, FALSE); | |
b1c5f1c6 SR |
248 | scrollok(list, TRUE); |
249 | wscrl(list, 1); | |
250 | scrollok(list, FALSE); | |
251 | } | |
252 | scroll++; | |
dec69da8 SR |
253 | print_item(list, items[(scroll + max_choice - 1) * 3 + 1], |
254 | status[scroll + max_choice - 1], max_choice - 1, TRUE); | |
b1c5f1c6 SR |
255 | wnoutrefresh(list); |
256 | ||
257 | print_arrows(dialog, choice, item_no, | |
dec69da8 | 258 | scroll, box_y, box_x + check_x + 5, list_height); |
b1c5f1c6 SR |
259 | |
260 | wrefresh(dialog); | |
261 | ||
262 | continue; /* wait for another key press */ | |
263 | } else | |
264 | i = choice + 1; | |
265 | } | |
266 | if (i != choice) { | |
267 | /* De-highlight current item */ | |
dec69da8 SR |
268 | print_item(list, items[(scroll + choice) * 3 + 1], |
269 | status[scroll + choice], choice, FALSE); | |
b1c5f1c6 SR |
270 | /* Highlight new item */ |
271 | choice = i; | |
dec69da8 SR |
272 | print_item(list, items[(scroll + choice) * 3 + 1], |
273 | status[scroll + choice], choice, TRUE); | |
b1c5f1c6 SR |
274 | wnoutrefresh(list); |
275 | wrefresh(dialog); | |
276 | } | |
277 | continue; /* wait for another key press */ | |
278 | } | |
279 | switch (key) { | |
280 | case 'H': | |
281 | case 'h': | |
282 | case '?': | |
283 | fprintf(stderr, "%s", items[(scroll + choice) * 3]); | |
284 | delwin(dialog); | |
285 | free(status); | |
286 | return 1; | |
287 | case TAB: | |
288 | case KEY_LEFT: | |
289 | case KEY_RIGHT: | |
290 | button = ((key == KEY_LEFT ? --button : ++button) < 0) | |
291 | ? 1 : (button > 1 ? 0 : button); | |
292 | ||
293 | print_buttons(dialog, height, width, button); | |
294 | wrefresh(dialog); | |
295 | break; | |
296 | case 'S': | |
297 | case 's': | |
298 | case ' ': | |
299 | case '\n': | |
300 | if (!button) { | |
00213b17 PB |
301 | if (!status[scroll + choice]) { |
302 | for (i = 0; i < item_no; i++) | |
303 | status[i] = 0; | |
304 | status[scroll + choice] = 1; | |
305 | for (i = 0; i < max_choice; i++) | |
306 | print_item(list, items[(scroll + i) * 3 + 1], | |
307 | status[scroll + i], i, i == choice); | |
b1c5f1c6 SR |
308 | } |
309 | wnoutrefresh(list); | |
310 | wrefresh(dialog); | |
311 | ||
00213b17 PB |
312 | for (i = 0; i < item_no; i++) |
313 | if (status[i]) | |
314 | fprintf(stderr, "%s", items[i * 3]); | |
b1c5f1c6 | 315 | } else |
dec69da8 | 316 | fprintf(stderr, "%s", items[(scroll + choice) * 3]); |
b1c5f1c6 SR |
317 | delwin(dialog); |
318 | free(status); | |
319 | return button; | |
320 | case 'X': | |
321 | case 'x': | |
322 | key = ESC; | |
323 | case ESC: | |
324 | break; | |
325 | } | |
326 | ||
327 | /* Now, update everything... */ | |
328 | doupdate(); | |
329 | } | |
1da177e4 | 330 | |
b1c5f1c6 SR |
331 | delwin(dialog); |
332 | free(status); | |
333 | return -1; /* ESC pressed */ | |
1da177e4 | 334 | } |