2 * checklist.c -- implements the checklist box
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)
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.
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.
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.
26 static int list_width, check_x, item_x, checkflag;
31 static void print_item(WINDOW * win, const char *item, int status, int choice,
36 /* Clear 'residue' of last item */
37 wattrset(win, menubox_attr);
38 wmove(win, choice, 0);
39 for (i = 0; i < list_width; i++)
42 wmove(win, choice, check_x);
43 wattrset(win, selected ? check_selected_attr : check_attr);
44 if (checkflag == FLAG_CHECK)
45 wprintw(win, "[%c]", status ? 'X' : ' ');
47 wprintw(win, "(%c)", status ? 'X' : ' ');
49 wattrset(win, selected ? tag_selected_attr : tag_attr);
50 mvwaddch(win, choice, item_x, item[0]);
51 wattrset(win, selected ? item_selected_attr : item_attr);
52 waddstr(win, (char *)item + 1);
54 wmove(win, choice, check_x + 1);
60 * Print the scroll indicators.
62 static void print_arrows(WINDOW * win, int choice, int item_no, int scroll,
63 int y, int x, int height)
68 wattrset(win, uarrow_attr);
69 waddch(win, ACS_UARROW);
72 wattrset(win, menubox_attr);
73 waddch(win, ACS_HLINE);
74 waddch(win, ACS_HLINE);
75 waddch(win, ACS_HLINE);
76 waddch(win, ACS_HLINE);
82 if ((height < item_no) && (scroll + choice < item_no - 1)) {
83 wattrset(win, darrow_attr);
84 waddch(win, ACS_DARROW);
87 wattrset(win, menubox_border_attr);
88 waddch(win, ACS_HLINE);
89 waddch(win, ACS_HLINE);
90 waddch(win, ACS_HLINE);
91 waddch(win, ACS_HLINE);
96 * Display the termination buttons
98 static void print_buttons(WINDOW * dialog, int height, int width, int selected)
100 int x = width / 2 - 11;
103 print_button(dialog, "Select", y, x, selected == 0);
104 print_button(dialog, " Help ", y, x + 14, selected == 1);
106 wmove(dialog, y, x + 1 + 14 * selected);
111 * Display a dialog box with a list of options that can be turned on or off
112 * The `flag' parameter is used to select between radiolist and checklist.
114 int dialog_checklist(const char *title, const char *prompt, int height,
115 int width, int list_height, int item_no,
116 const char *const *items, int flag)
118 int i, x, y, box_x, box_y;
119 int key = 0, button = 0, choice = 0, scroll = 0, max_choice, *status;
120 WINDOW *dialog, *list;
124 /* Allocate space for storing item on/off status */
125 if ((status = malloc(sizeof(int) * item_no)) == NULL) {
128 "\nCan't allocate memory in dialog_checklist().\n");
132 /* Initializes status */
133 for (i = 0; i < item_no; i++) {
134 status[i] = !strcasecmp(items[i * 3 + 2], "on");
135 if ((!choice && status[i])
136 || !strcasecmp(items[i * 3 + 2], "selected"))
142 max_choice = MIN(list_height, item_no);
144 /* center dialog box on screen */
145 x = (COLS - width) / 2;
146 y = (LINES - height) / 2;
148 draw_shadow(stdscr, y, x, height, width);
150 dialog = newwin(height, width, y, x);
151 keypad(dialog, TRUE);
153 draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
154 wattrset(dialog, border_attr);
155 mvwaddch(dialog, height - 3, 0, ACS_LTEE);
156 for (i = 0; i < width - 2; i++)
157 waddch(dialog, ACS_HLINE);
158 wattrset(dialog, dialog_attr);
159 waddch(dialog, ACS_RTEE);
161 print_title(dialog, title, width);
163 wattrset(dialog, dialog_attr);
164 print_autowrap(dialog, prompt, width - 2, 1, 3);
166 list_width = width - 6;
167 box_y = height - list_height - 5;
168 box_x = (width - list_width) / 2 - 1;
170 /* create new window for the list */
171 list = subwin(dialog, list_height, list_width, y + box_y + 1,
176 /* draw a box around the list items */
177 draw_box(dialog, box_y, box_x, list_height + 2, list_width + 2,
178 menubox_border_attr, menubox_attr);
180 /* Find length of longest item in order to center checklist */
182 for (i = 0; i < item_no; i++)
183 check_x = MAX(check_x, +strlen(items[i * 3 + 1]) + 4);
185 check_x = (list_width - check_x) / 2;
186 item_x = check_x + 4;
188 if (choice >= list_height) {
189 scroll = choice - list_height + 1;
194 for (i = 0; i < max_choice; i++) {
195 print_item(list, items[(scroll + i) * 3 + 1],
196 status[i + scroll], i, i == choice);
199 print_arrows(dialog, choice, item_no, scroll,
200 box_y, box_x + check_x + 5, list_height);
202 print_buttons(dialog, height, width, 0);
205 wnoutrefresh(dialog);
209 key = wgetch(dialog);
211 for (i = 0; i < max_choice; i++)
213 toupper(items[(scroll + i) * 3 + 1][0]))
216 if (i < max_choice || key == KEY_UP || key == KEY_DOWN ||
217 key == '+' || key == '-') {
218 if (key == KEY_UP || key == '-') {
222 /* Scroll list down */
223 if (list_height > 1) {
224 /* De-highlight current first item */
225 print_item(list, items[scroll * 3 + 1],
226 status[scroll], 0, FALSE);
227 scrollok(list, TRUE);
229 scrollok(list, FALSE);
232 print_item(list, items[scroll * 3 + 1], status[scroll], 0, TRUE);
235 print_arrows(dialog, choice, item_no,
236 scroll, box_y, box_x + check_x + 5, list_height);
240 continue; /* wait for another key press */
243 } else if (key == KEY_DOWN || key == '+') {
244 if (choice == max_choice - 1) {
245 if (scroll + choice >= item_no - 1)
248 if (list_height > 1) {
249 /* De-highlight current last item before scrolling up */
250 print_item(list, items[(scroll + max_choice - 1) * 3 + 1],
251 status[scroll + max_choice - 1],
252 max_choice - 1, FALSE);
253 scrollok(list, TRUE);
255 scrollok(list, FALSE);
258 print_item(list, items[(scroll + max_choice - 1) * 3 + 1],
259 status[scroll + max_choice - 1], max_choice - 1, TRUE);
262 print_arrows(dialog, choice, item_no,
263 scroll, box_y, box_x + check_x + 5, list_height);
267 continue; /* wait for another key press */
272 /* De-highlight current item */
273 print_item(list, items[(scroll + choice) * 3 + 1],
274 status[scroll + choice], choice, FALSE);
275 /* Highlight new item */
277 print_item(list, items[(scroll + choice) * 3 + 1],
278 status[scroll + choice], choice, TRUE);
282 continue; /* wait for another key press */
288 fprintf(stderr, "%s", items[(scroll + choice) * 3]);
295 button = ((key == KEY_LEFT ? --button : ++button) < 0)
296 ? 1 : (button > 1 ? 0 : button);
298 print_buttons(dialog, height, width, button);
306 if (flag == FLAG_CHECK) {
307 status[scroll + choice] = !status[scroll + choice];
308 wmove(list, choice, check_x);
309 wattrset(list, check_selected_attr);
310 wprintw(list, "[%c]", status[scroll + choice] ? 'X' : ' ');
312 if (!status[scroll + choice]) {
313 for (i = 0; i < item_no; i++)
315 status[scroll + choice] = 1;
316 for (i = 0; i < max_choice; i++)
317 print_item(list, items[(scroll + i) * 3 + 1],
318 status[scroll + i], i, i == choice);
324 for (i = 0; i < item_no; i++) {
326 if (flag == FLAG_CHECK) {
327 fprintf(stderr, "\"%s\" ", items[i * 3]);
329 fprintf(stderr, "%s", items[i * 3]);
335 fprintf(stderr, "%s", items[(scroll + choice) * 3]);
346 /* Now, update everything... */
352 return -1; /* ESC pressed */