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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 | ||
26 | static int list_width, check_x, item_x, checkflag; | |
27 | ||
28 | /* | |
29 | * Print list item | |
30 | */ | |
31 | static void | |
32 | print_item (WINDOW * win, const char *item, int status, | |
33 | int choice, int selected) | |
34 | { | |
35 | int i; | |
36 | ||
37 | /* Clear 'residue' of last item */ | |
38 | wattrset (win, menubox_attr); | |
39 | wmove (win, choice, 0); | |
40 | for (i = 0; i < list_width; i++) | |
41 | waddch (win, ' '); | |
42 | ||
43 | wmove (win, choice, check_x); | |
44 | wattrset (win, selected ? check_selected_attr : check_attr); | |
45 | if (checkflag == FLAG_CHECK) | |
46 | wprintw (win, "[%c]", status ? 'X' : ' '); | |
47 | else | |
48 | wprintw (win, "(%c)", status ? 'X' : ' '); | |
49 | ||
50 | wattrset (win, selected ? tag_selected_attr : tag_attr); | |
51 | mvwaddch(win, choice, item_x, item[0]); | |
52 | wattrset (win, selected ? item_selected_attr : item_attr); | |
53 | waddstr (win, (char *)item+1); | |
54 | if (selected) { | |
55 | wmove (win, choice, check_x+1); | |
56 | wrefresh (win); | |
57 | } | |
58 | } | |
59 | ||
60 | /* | |
61 | * Print the scroll indicators. | |
62 | */ | |
63 | static void | |
64 | print_arrows (WINDOW * win, int choice, int item_no, int scroll, | |
65 | int y, int x, int height) | |
66 | { | |
67 | wmove(win, y, x); | |
68 | ||
69 | if (scroll > 0) { | |
70 | wattrset (win, uarrow_attr); | |
71 | waddch (win, ACS_UARROW); | |
72 | waddstr (win, "(-)"); | |
73 | } | |
74 | else { | |
75 | wattrset (win, menubox_attr); | |
76 | waddch (win, ACS_HLINE); | |
77 | waddch (win, ACS_HLINE); | |
78 | waddch (win, ACS_HLINE); | |
79 | waddch (win, ACS_HLINE); | |
80 | } | |
81 | ||
82 | y = y + height + 1; | |
83 | wmove(win, y, x); | |
84 | ||
85 | if ((height < item_no) && (scroll + choice < item_no - 1)) { | |
86 | wattrset (win, darrow_attr); | |
87 | waddch (win, ACS_DARROW); | |
88 | waddstr (win, "(+)"); | |
89 | } | |
90 | else { | |
91 | wattrset (win, menubox_border_attr); | |
92 | waddch (win, ACS_HLINE); | |
93 | waddch (win, ACS_HLINE); | |
94 | waddch (win, ACS_HLINE); | |
95 | waddch (win, ACS_HLINE); | |
96 | } | |
97 | } | |
98 | ||
99 | /* | |
100 | * Display the termination buttons | |
101 | */ | |
102 | static void | |
103 | print_buttons( WINDOW *dialog, int height, int width, int selected) | |
104 | { | |
105 | int x = width / 2 - 11; | |
106 | int y = height - 2; | |
107 | ||
108 | print_button (dialog, "Select", y, x, selected == 0); | |
109 | print_button (dialog, " Help ", y, x + 14, selected == 1); | |
110 | ||
111 | wmove(dialog, y, x+1 + 14*selected); | |
112 | wrefresh (dialog); | |
113 | } | |
114 | ||
115 | /* | |
116 | * Display a dialog box with a list of options that can be turned on or off | |
117 | * The `flag' parameter is used to select between radiolist and checklist. | |
118 | */ | |
119 | int | |
120 | dialog_checklist (const char *title, const char *prompt, int height, int width, | |
121 | int list_height, int item_no, const char * const * items, int flag) | |
122 | ||
123 | { | |
124 | int i, x, y, box_x, box_y; | |
125 | int key = 0, button = 0, choice = 0, scroll = 0, max_choice, *status; | |
126 | WINDOW *dialog, *list; | |
127 | ||
128 | checkflag = flag; | |
129 | ||
130 | /* Allocate space for storing item on/off status */ | |
131 | if ((status = malloc (sizeof (int) * item_no)) == NULL) { | |
132 | endwin (); | |
133 | fprintf (stderr, | |
134 | "\nCan't allocate memory in dialog_checklist().\n"); | |
135 | exit (-1); | |
136 | } | |
137 | ||
138 | /* Initializes status */ | |
139 | for (i = 0; i < item_no; i++) { | |
140 | status[i] = !strcasecmp (items[i * 3 + 2], "on"); | |
141 | if ((!choice && status[i]) || !strcasecmp (items[i * 3 + 2], "selected")) | |
142 | choice = i + 1; | |
143 | } | |
144 | if (choice) | |
145 | choice--; | |
146 | ||
147 | max_choice = MIN (list_height, item_no); | |
148 | ||
149 | /* center dialog box on screen */ | |
150 | x = (COLS - width) / 2; | |
151 | y = (LINES - height) / 2; | |
152 | ||
153 | draw_shadow (stdscr, y, x, height, width); | |
154 | ||
155 | dialog = newwin (height, width, y, x); | |
156 | keypad (dialog, TRUE); | |
157 | ||
158 | draw_box (dialog, 0, 0, height, width, dialog_attr, border_attr); | |
159 | wattrset (dialog, border_attr); | |
160 | mvwaddch (dialog, height-3, 0, ACS_LTEE); | |
161 | for (i = 0; i < width - 2; i++) | |
162 | waddch (dialog, ACS_HLINE); | |
163 | wattrset (dialog, dialog_attr); | |
164 | waddch (dialog, ACS_RTEE); | |
165 | ||
166 | if (title != NULL && strlen(title) >= width-2 ) { | |
167 | /* truncate long title -- mec */ | |
168 | char * title2 = malloc(width-2+1); | |
169 | memcpy( title2, title, width-2 ); | |
170 | title2[width-2] = '\0'; | |
171 | title = title2; | |
172 | } | |
173 | ||
174 | if (title != NULL) { | |
175 | wattrset (dialog, title_attr); | |
176 | mvwaddch (dialog, 0, (width - strlen(title))/2 - 1, ' '); | |
177 | waddstr (dialog, (char *)title); | |
178 | waddch (dialog, ' '); | |
179 | } | |
180 | ||
181 | wattrset (dialog, dialog_attr); | |
182 | print_autowrap (dialog, prompt, width - 2, 1, 3); | |
183 | ||
184 | list_width = width - 6; | |
185 | box_y = height - list_height - 5; | |
186 | box_x = (width - list_width) / 2 - 1; | |
187 | ||
188 | /* create new window for the list */ | |
189 | list = subwin (dialog, list_height, list_width, y+box_y+1, x+box_x+1); | |
190 | ||
191 | keypad (list, TRUE); | |
192 | ||
193 | /* draw a box around the list items */ | |
194 | draw_box (dialog, box_y, box_x, list_height + 2, list_width + 2, | |
195 | menubox_border_attr, menubox_attr); | |
196 | ||
197 | /* Find length of longest item in order to center checklist */ | |
198 | check_x = 0; | |
199 | for (i = 0; i < item_no; i++) | |
200 | check_x = MAX (check_x, + strlen (items[i * 3 + 1]) + 4); | |
201 | ||
202 | check_x = (list_width - check_x) / 2; | |
203 | item_x = check_x + 4; | |
204 | ||
205 | if (choice >= list_height) { | |
206 | scroll = choice - list_height + 1; | |
207 | choice -= scroll; | |
208 | } | |
209 | ||
210 | /* Print the list */ | |
211 | for (i = 0; i < max_choice; i++) { | |
212 | print_item (list, items[(scroll+i) * 3 + 1], | |
213 | status[i+scroll], i, i == choice); | |
214 | } | |
215 | ||
216 | print_arrows(dialog, choice, item_no, scroll, | |
217 | box_y, box_x + check_x + 5, list_height); | |
218 | ||
219 | print_buttons(dialog, height, width, 0); | |
220 | ||
221 | wnoutrefresh (list); | |
222 | wnoutrefresh (dialog); | |
223 | doupdate (); | |
224 | ||
225 | while (key != ESC) { | |
226 | key = wgetch (dialog); | |
227 | ||
228 | for (i = 0; i < max_choice; i++) | |
229 | if (toupper(key) == toupper(items[(scroll+i)*3+1][0])) | |
230 | break; | |
231 | ||
232 | ||
233 | if ( i < max_choice || key == KEY_UP || key == KEY_DOWN || | |
234 | key == '+' || key == '-' ) { | |
235 | if (key == KEY_UP || key == '-') { | |
236 | if (!choice) { | |
237 | if (!scroll) | |
238 | continue; | |
239 | /* Scroll list down */ | |
240 | if (list_height > 1) { | |
241 | /* De-highlight current first item */ | |
242 | print_item (list, items[scroll * 3 + 1], | |
243 | status[scroll], 0, FALSE); | |
244 | scrollok (list, TRUE); | |
245 | wscrl (list, -1); | |
246 | scrollok (list, FALSE); | |
247 | } | |
248 | scroll--; | |
249 | print_item (list, items[scroll * 3 + 1], | |
250 | status[scroll], 0, TRUE); | |
251 | wnoutrefresh (list); | |
252 | ||
253 | print_arrows(dialog, choice, item_no, scroll, | |
254 | box_y, box_x + check_x + 5, list_height); | |
255 | ||
256 | wrefresh (dialog); | |
257 | ||
258 | continue; /* wait for another key press */ | |
259 | } else | |
260 | i = choice - 1; | |
261 | } else if (key == KEY_DOWN || key == '+') { | |
262 | if (choice == max_choice - 1) { | |
263 | if (scroll + choice >= item_no - 1) | |
264 | continue; | |
265 | /* Scroll list up */ | |
266 | if (list_height > 1) { | |
267 | /* De-highlight current last item before scrolling up */ | |
268 | print_item (list, items[(scroll + max_choice - 1) * 3 + 1], | |
269 | status[scroll + max_choice - 1], | |
270 | max_choice - 1, FALSE); | |
271 | scrollok (list, TRUE); | |
272 | wscrl (list, 1); | |
273 | scrollok (list, FALSE); | |
274 | } | |
275 | scroll++; | |
276 | print_item (list, items[(scroll + max_choice - 1) * 3 + 1], | |
277 | status[scroll + max_choice - 1], | |
278 | max_choice - 1, TRUE); | |
279 | wnoutrefresh (list); | |
280 | ||
281 | print_arrows(dialog, choice, item_no, scroll, | |
282 | box_y, box_x + check_x + 5, list_height); | |
283 | ||
284 | wrefresh (dialog); | |
285 | ||
286 | continue; /* wait for another key press */ | |
287 | } else | |
288 | i = choice + 1; | |
289 | } | |
290 | if (i != choice) { | |
291 | /* De-highlight current item */ | |
292 | print_item (list, items[(scroll + choice) * 3 + 1], | |
293 | status[scroll + choice], choice, FALSE); | |
294 | /* Highlight new item */ | |
295 | choice = i; | |
296 | print_item (list, items[(scroll + choice) * 3 + 1], | |
297 | status[scroll + choice], choice, TRUE); | |
298 | wnoutrefresh (list); | |
299 | wrefresh (dialog); | |
300 | } | |
301 | continue; /* wait for another key press */ | |
302 | } | |
303 | switch (key) { | |
304 | case 'H': | |
305 | case 'h': | |
306 | case '?': | |
307 | fprintf (stderr, "%s", items[(scroll + choice) * 3]); | |
308 | delwin (dialog); | |
309 | free (status); | |
310 | return 1; | |
311 | case TAB: | |
312 | case KEY_LEFT: | |
313 | case KEY_RIGHT: | |
314 | button = ((key == KEY_LEFT ? --button : ++button) < 0) | |
315 | ? 1 : (button > 1 ? 0 : button); | |
316 | ||
317 | print_buttons(dialog, height, width, button); | |
318 | wrefresh (dialog); | |
319 | break; | |
320 | case 'S': | |
321 | case 's': | |
322 | case ' ': | |
323 | case '\n': | |
324 | if (!button) { | |
325 | if (flag == FLAG_CHECK) { | |
326 | status[scroll + choice] = !status[scroll + choice]; | |
327 | wmove (list, choice, check_x); | |
328 | wattrset (list, check_selected_attr); | |
329 | wprintw (list, "[%c]", status[scroll + choice] ? 'X' : ' '); | |
330 | } else { | |
331 | if (!status[scroll + choice]) { | |
332 | for (i = 0; i < item_no; i++) | |
333 | status[i] = 0; | |
334 | status[scroll + choice] = 1; | |
335 | for (i = 0; i < max_choice; i++) | |
336 | print_item (list, items[(scroll + i) * 3 + 1], | |
337 | status[scroll + i], i, i == choice); | |
338 | } | |
339 | } | |
340 | wnoutrefresh (list); | |
341 | wrefresh (dialog); | |
342 | ||
343 | for (i = 0; i < item_no; i++) { | |
344 | if (status[i]) { | |
345 | if (flag == FLAG_CHECK) { | |
346 | fprintf (stderr, "\"%s\" ", items[i * 3]); | |
347 | } else { | |
348 | fprintf (stderr, "%s", items[i * 3]); | |
349 | } | |
350 | ||
351 | } | |
352 | } | |
353 | } else | |
354 | fprintf (stderr, "%s", items[(scroll + choice) * 3]); | |
355 | delwin (dialog); | |
356 | free (status); | |
357 | return button; | |
358 | case 'X': | |
359 | case 'x': | |
360 | key = ESC; | |
361 | case ESC: | |
362 | break; | |
363 | } | |
364 | ||
365 | /* Now, update everything... */ | |
366 | doupdate (); | |
367 | } | |
368 | ||
369 | ||
370 | delwin (dialog); | |
371 | free (status); | |
372 | return -1; /* ESC pressed */ | |
373 | } |