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;
31 static void print_item(WINDOW * win, int choice, int selected)
35 /* Clear 'residue' of last item */
36 wattrset(win, dlg.menubox.atr);
37 wmove(win, choice, 0);
38 for (i = 0; i < list_width; i++)
41 wmove(win, choice, check_x);
42 wattrset(win, selected ? dlg.check_selected.atr
44 if (!item_is_tag(':'))
45 wprintw(win, "(%c)", item_is_tag('X') ? 'X' : ' ');
47 wattrset(win, selected ? dlg.tag_selected.atr : dlg.tag.atr);
48 mvwaddch(win, choice, item_x, item_str()[0]);
49 wattrset(win, selected ? dlg.item_selected.atr : dlg.item.atr);
50 waddstr(win, (char *)item_str() + 1);
52 wmove(win, choice, check_x + 1);
58 * Print the scroll indicators.
60 static void print_arrows(WINDOW * win, int choice, int item_no, int scroll,
61 int y, int x, int height)
66 wattrset(win, dlg.uarrow.atr);
67 waddch(win, ACS_UARROW);
70 wattrset(win, dlg.menubox.atr);
71 waddch(win, ACS_HLINE);
72 waddch(win, ACS_HLINE);
73 waddch(win, ACS_HLINE);
74 waddch(win, ACS_HLINE);
80 if ((height < item_no) && (scroll + choice < item_no - 1)) {
81 wattrset(win, dlg.darrow.atr);
82 waddch(win, ACS_DARROW);
85 wattrset(win, dlg.menubox_border.atr);
86 waddch(win, ACS_HLINE);
87 waddch(win, ACS_HLINE);
88 waddch(win, ACS_HLINE);
89 waddch(win, ACS_HLINE);
94 * Display the termination buttons
96 static void print_buttons(WINDOW * dialog, int height, int width, int selected)
98 int x = width / 2 - 11;
101 print_button(dialog, gettext("Select"), y, x, selected == 0);
102 print_button(dialog, gettext(" Help "), y, x + 14, selected == 1);
104 wmove(dialog, y, x + 1 + 14 * selected);
109 * Display a dialog box with a list of options that can be turned on or off
110 * in the style of radiolist (only one option turned on at a time).
112 int dialog_checklist(const char *title, const char *prompt, int height,
113 int width, int list_height)
115 int i, x, y, box_x, box_y;
116 int key = 0, button = 0, choice = 0, scroll = 0, max_choice;
117 WINDOW *dialog, *list;
119 /* which item to highlight */
121 if (item_is_tag('X'))
123 if (item_is_selected()) {
130 if (getmaxy(stdscr) < (height + 6))
131 return -ERRDISPLAYTOOSMALL;
132 if (getmaxx(stdscr) < (width + 6))
133 return -ERRDISPLAYTOOSMALL;
135 max_choice = MIN(list_height, item_count());
137 /* center dialog box on screen */
138 x = (COLS - width) / 2;
139 y = (LINES - height) / 2;
141 draw_shadow(stdscr, y, x, height, width);
143 dialog = newwin(height, width, y, x);
144 keypad(dialog, TRUE);
146 draw_box(dialog, 0, 0, height, width,
147 dlg.dialog.atr, dlg.border.atr);
148 wattrset(dialog, dlg.border.atr);
149 mvwaddch(dialog, height - 3, 0, ACS_LTEE);
150 for (i = 0; i < width - 2; i++)
151 waddch(dialog, ACS_HLINE);
152 wattrset(dialog, dlg.dialog.atr);
153 waddch(dialog, ACS_RTEE);
155 print_title(dialog, title, width);
157 wattrset(dialog, dlg.dialog.atr);
158 print_autowrap(dialog, prompt, width - 2, 1, 3);
160 list_width = width - 6;
161 box_y = height - list_height - 5;
162 box_x = (width - list_width) / 2 - 1;
164 /* create new window for the list */
165 list = subwin(dialog, list_height, list_width, y + box_y + 1,
170 /* draw a box around the list items */
171 draw_box(dialog, box_y, box_x, list_height + 2, list_width + 2,
172 dlg.menubox_border.atr, dlg.menubox.atr);
174 /* Find length of longest item in order to center checklist */
177 check_x = MAX(check_x, strlen(item_str()) + 4);
179 check_x = (list_width - check_x) / 2;
180 item_x = check_x + 4;
182 if (choice >= list_height) {
183 scroll = choice - list_height + 1;
188 for (i = 0; i < max_choice; i++) {
189 item_set(scroll + i);
190 print_item(list, i, i == choice);
193 print_arrows(dialog, choice, item_count(), scroll,
194 box_y, box_x + check_x + 5, list_height);
196 print_buttons(dialog, height, width, 0);
198 wnoutrefresh(dialog);
202 while (key != KEY_ESC) {
203 key = wgetch(dialog);
205 for (i = 0; i < max_choice; i++) {
206 item_set(i + scroll);
207 if (toupper(key) == toupper(item_str()[0]))
211 if (i < max_choice || key == KEY_UP || key == KEY_DOWN ||
212 key == '+' || key == '-') {
213 if (key == KEY_UP || key == '-') {
217 /* Scroll list down */
218 if (list_height > 1) {
219 /* De-highlight current first item */
221 print_item(list, 0, FALSE);
222 scrollok(list, TRUE);
224 scrollok(list, FALSE);
228 print_item(list, 0, TRUE);
229 print_arrows(dialog, choice, item_count(),
230 scroll, box_y, box_x + check_x + 5, list_height);
232 wnoutrefresh(dialog);
235 continue; /* wait for another key press */
238 } else if (key == KEY_DOWN || key == '+') {
239 if (choice == max_choice - 1) {
240 if (scroll + choice >= item_count() - 1)
243 if (list_height > 1) {
244 /* De-highlight current last item before scrolling up */
245 item_set(scroll + max_choice - 1);
249 scrollok(list, TRUE);
251 scrollok(list, FALSE);
254 item_set(scroll + max_choice - 1);
255 print_item(list, max_choice - 1, TRUE);
257 print_arrows(dialog, choice, item_count(),
258 scroll, box_y, box_x + check_x + 5, list_height);
260 wnoutrefresh(dialog);
263 continue; /* wait for another key press */
268 /* De-highlight current item */
269 item_set(scroll + choice);
270 print_item(list, choice, FALSE);
271 /* Highlight new item */
273 item_set(scroll + choice);
274 print_item(list, choice, TRUE);
275 wnoutrefresh(dialog);
278 continue; /* wait for another key press */
291 item_set_selected(0);
292 item_set(scroll + choice);
293 item_set_selected(1);
300 button = ((key == KEY_LEFT ? --button : ++button) < 0)
301 ? 1 : (button > 1 ? 0 : button);
303 print_buttons(dialog, height, width, button);
311 key = on_key_esc(dialog);
320 /* Now, update everything... */
325 return key; /* ESC pressed */