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 if (title != NULL && strlen(title) >= width - 2) {
162 /* truncate long title -- mec */
163 char *title2 = malloc(width - 2 + 1);
164 memcpy(title2, title, width - 2);
165 title2[width - 2] = '\0';
170 wattrset(dialog, title_attr);
171 mvwaddch(dialog, 0, (width - strlen(title)) / 2 - 1, ' ');
172 waddstr(dialog, (char *)title);
176 wattrset(dialog, dialog_attr);
177 print_autowrap(dialog, prompt, width - 2, 1, 3);
179 list_width = width - 6;
180 box_y = height - list_height - 5;
181 box_x = (width - list_width) / 2 - 1;
183 /* create new window for the list */
184 list = subwin(dialog, list_height, list_width, y + box_y + 1,
189 /* draw a box around the list items */
190 draw_box(dialog, box_y, box_x, list_height + 2, list_width + 2,
191 menubox_border_attr, menubox_attr);
193 /* Find length of longest item in order to center checklist */
195 for (i = 0; i < item_no; i++)
196 check_x = MAX(check_x, +strlen(items[i * 3 + 1]) + 4);
198 check_x = (list_width - check_x) / 2;
199 item_x = check_x + 4;
201 if (choice >= list_height) {
202 scroll = choice - list_height + 1;
207 for (i = 0; i < max_choice; i++) {
208 print_item(list, items[(scroll + i) * 3 + 1],
209 status[i + scroll], i, i == choice);
212 print_arrows(dialog, choice, item_no, scroll,
213 box_y, box_x + check_x + 5, list_height);
215 print_buttons(dialog, height, width, 0);
218 wnoutrefresh(dialog);
222 key = wgetch(dialog);
224 for (i = 0; i < max_choice; i++)
226 toupper(items[(scroll + i) * 3 + 1][0]))
229 if (i < max_choice || key == KEY_UP || key == KEY_DOWN ||
230 key == '+' || key == '-') {
231 if (key == KEY_UP || key == '-') {
235 /* Scroll list down */
236 if (list_height > 1) {
237 /* De-highlight current first item */
238 print_item(list, items[scroll * 3 + 1],
239 status[scroll], 0, FALSE);
240 scrollok(list, TRUE);
242 scrollok(list, FALSE);
245 print_item(list, items[scroll * 3 + 1], status[scroll], 0, TRUE);
248 print_arrows(dialog, choice, item_no,
249 scroll, box_y, box_x + check_x + 5, list_height);
253 continue; /* wait for another key press */
256 } else if (key == KEY_DOWN || key == '+') {
257 if (choice == max_choice - 1) {
258 if (scroll + choice >= item_no - 1)
261 if (list_height > 1) {
262 /* De-highlight current last item before scrolling up */
263 print_item(list, items[(scroll + max_choice - 1) * 3 + 1],
264 status[scroll + max_choice - 1],
265 max_choice - 1, FALSE);
266 scrollok(list, TRUE);
268 scrollok(list, FALSE);
271 print_item(list, items[(scroll + max_choice - 1) * 3 + 1],
272 status[scroll + max_choice - 1], max_choice - 1, TRUE);
275 print_arrows(dialog, choice, item_no,
276 scroll, box_y, box_x + check_x + 5, list_height);
280 continue; /* wait for another key press */
285 /* De-highlight current item */
286 print_item(list, items[(scroll + choice) * 3 + 1],
287 status[scroll + choice], choice, FALSE);
288 /* Highlight new item */
290 print_item(list, items[(scroll + choice) * 3 + 1],
291 status[scroll + choice], choice, TRUE);
295 continue; /* wait for another key press */
301 fprintf(stderr, "%s", items[(scroll + choice) * 3]);
308 button = ((key == KEY_LEFT ? --button : ++button) < 0)
309 ? 1 : (button > 1 ? 0 : button);
311 print_buttons(dialog, height, width, button);
319 if (flag == FLAG_CHECK) {
320 status[scroll + choice] = !status[scroll + choice];
321 wmove(list, choice, check_x);
322 wattrset(list, check_selected_attr);
323 wprintw(list, "[%c]", status[scroll + choice] ? 'X' : ' ');
325 if (!status[scroll + choice]) {
326 for (i = 0; i < item_no; i++)
328 status[scroll + choice] = 1;
329 for (i = 0; i < max_choice; i++)
330 print_item(list, items[(scroll + i) * 3 + 1],
331 status[scroll + i], i, i == choice);
337 for (i = 0; i < item_no; i++) {
339 if (flag == FLAG_CHECK) {
340 fprintf(stderr, "\"%s\" ", items[i * 3]);
342 fprintf(stderr, "%s", items[i * 3]);
348 fprintf(stderr, "%s", items[(scroll + choice) * 3]);
359 /* Now, update everything... */
365 return -1; /* ESC pressed */