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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 | */ | |
2982de69 | 31 | static void print_item(WINDOW * win, int choice, int selected) |
1da177e4 | 32 | { |
b1c5f1c6 SR |
33 | int i; |
34 | ||
35 | /* Clear 'residue' of last item */ | |
98e5a157 | 36 | wattrset(win, dlg.menubox.atr); |
b1c5f1c6 SR |
37 | wmove(win, choice, 0); |
38 | for (i = 0; i < list_width; i++) | |
39 | waddch(win, ' '); | |
40 | ||
41 | wmove(win, choice, check_x); | |
98e5a157 SR |
42 | wattrset(win, selected ? dlg.check_selected.atr |
43 | : dlg.check.atr); | |
2982de69 | 44 | wprintw(win, "(%c)", item_is_tag('X') ? 'X' : ' '); |
b1c5f1c6 | 45 | |
98e5a157 | 46 | wattrset(win, selected ? dlg.tag_selected.atr : dlg.tag.atr); |
2982de69 | 47 | mvwaddch(win, choice, item_x, item_str()[0]); |
98e5a157 | 48 | wattrset(win, selected ? dlg.item_selected.atr : dlg.item.atr); |
2982de69 | 49 | waddstr(win, (char *)item_str() + 1); |
b1c5f1c6 SR |
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) { | |
98e5a157 | 65 | wattrset(win, dlg.uarrow.atr); |
b1c5f1c6 SR |
66 | waddch(win, ACS_UARROW); |
67 | waddstr(win, "(-)"); | |
68 | } else { | |
98e5a157 | 69 | wattrset(win, dlg.menubox.atr); |
b1c5f1c6 SR |
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)) { | |
98e5a157 | 80 | wattrset(win, dlg.darrow.atr); |
b1c5f1c6 SR |
81 | waddch(win, ACS_DARROW); |
82 | waddstr(win, "(+)"); | |
83 | } else { | |
98e5a157 | 84 | wattrset(win, dlg.menubox_border.atr); |
b1c5f1c6 SR |
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 | 111 | int dialog_checklist(const char *title, const char *prompt, int height, |
2982de69 | 112 | int width, int list_height) |
1da177e4 | 113 | { |
b1c5f1c6 | 114 | int i, x, y, box_x, box_y; |
2982de69 | 115 | int key = 0, button = 0, choice = 0, scroll = 0, max_choice; |
b1c5f1c6 SR |
116 | WINDOW *dialog, *list; |
117 | ||
2982de69 SR |
118 | /* which item to highlight */ |
119 | item_foreach() { | |
120 | if (item_is_tag('X')) | |
121 | choice = item_n(); | |
122 | if (item_is_selected()) { | |
123 | choice = item_n(); | |
124 | break; | |
125 | } | |
b1c5f1c6 | 126 | } |
b1c5f1c6 | 127 | |
2982de69 | 128 | max_choice = MIN(list_height, item_count()); |
b1c5f1c6 SR |
129 | |
130 | /* center dialog box on screen */ | |
131 | x = (COLS - width) / 2; | |
132 | y = (LINES - height) / 2; | |
133 | ||
134 | draw_shadow(stdscr, y, x, height, width); | |
135 | ||
136 | dialog = newwin(height, width, y, x); | |
137 | keypad(dialog, TRUE); | |
138 | ||
98e5a157 SR |
139 | draw_box(dialog, 0, 0, height, width, |
140 | dlg.dialog.atr, dlg.border.atr); | |
141 | wattrset(dialog, dlg.border.atr); | |
b1c5f1c6 SR |
142 | mvwaddch(dialog, height - 3, 0, ACS_LTEE); |
143 | for (i = 0; i < width - 2; i++) | |
144 | waddch(dialog, ACS_HLINE); | |
98e5a157 | 145 | wattrset(dialog, dlg.dialog.atr); |
b1c5f1c6 SR |
146 | waddch(dialog, ACS_RTEE); |
147 | ||
fa7009d5 | 148 | print_title(dialog, title, width); |
b1c5f1c6 | 149 | |
98e5a157 | 150 | wattrset(dialog, dlg.dialog.atr); |
b1c5f1c6 SR |
151 | print_autowrap(dialog, prompt, width - 2, 1, 3); |
152 | ||
153 | list_width = width - 6; | |
154 | box_y = height - list_height - 5; | |
155 | box_x = (width - list_width) / 2 - 1; | |
156 | ||
157 | /* create new window for the list */ | |
dec69da8 SR |
158 | list = subwin(dialog, list_height, list_width, y + box_y + 1, |
159 | x + box_x + 1); | |
b1c5f1c6 SR |
160 | |
161 | keypad(list, TRUE); | |
162 | ||
163 | /* draw a box around the list items */ | |
164 | draw_box(dialog, box_y, box_x, list_height + 2, list_width + 2, | |
98e5a157 | 165 | dlg.menubox_border.atr, dlg.menubox.atr); |
b1c5f1c6 SR |
166 | |
167 | /* Find length of longest item in order to center checklist */ | |
168 | check_x = 0; | |
2982de69 SR |
169 | item_foreach() |
170 | check_x = MAX(check_x, strlen(item_str()) + 4); | |
b1c5f1c6 SR |
171 | |
172 | check_x = (list_width - check_x) / 2; | |
173 | item_x = check_x + 4; | |
174 | ||
175 | if (choice >= list_height) { | |
176 | scroll = choice - list_height + 1; | |
177 | choice -= scroll; | |
178 | } | |
179 | ||
180 | /* Print the list */ | |
181 | for (i = 0; i < max_choice; i++) { | |
2982de69 SR |
182 | item_set(scroll + i); |
183 | print_item(list, i, i == choice); | |
1da177e4 LT |
184 | } |
185 | ||
2982de69 | 186 | print_arrows(dialog, choice, item_count(), scroll, |
b1c5f1c6 SR |
187 | box_y, box_x + check_x + 5, list_height); |
188 | ||
189 | print_buttons(dialog, height, width, 0); | |
190 | ||
b1c5f1c6 | 191 | wnoutrefresh(dialog); |
f043ca43 | 192 | wnoutrefresh(list); |
b1c5f1c6 SR |
193 | doupdate(); |
194 | ||
195 | while (key != ESC) { | |
196 | key = wgetch(dialog); | |
197 | ||
2982de69 SR |
198 | for (i = 0; i < max_choice; i++) { |
199 | item_set(i + scroll); | |
200 | if (toupper(key) == toupper(item_str()[0])) | |
b1c5f1c6 | 201 | break; |
2982de69 | 202 | } |
b1c5f1c6 SR |
203 | |
204 | if (i < max_choice || key == KEY_UP || key == KEY_DOWN || | |
205 | key == '+' || key == '-') { | |
206 | if (key == KEY_UP || key == '-') { | |
207 | if (!choice) { | |
208 | if (!scroll) | |
209 | continue; | |
210 | /* Scroll list down */ | |
211 | if (list_height > 1) { | |
212 | /* De-highlight current first item */ | |
2982de69 SR |
213 | item_set(scroll); |
214 | print_item(list, 0, FALSE); | |
b1c5f1c6 SR |
215 | scrollok(list, TRUE); |
216 | wscrl(list, -1); | |
217 | scrollok(list, FALSE); | |
218 | } | |
219 | scroll--; | |
2982de69 SR |
220 | item_set(scroll); |
221 | print_item(list, 0, TRUE); | |
222 | print_arrows(dialog, choice, item_count(), | |
dec69da8 | 223 | scroll, box_y, box_x + check_x + 5, list_height); |
b1c5f1c6 | 224 | |
f043ca43 ST |
225 | wnoutrefresh(dialog); |
226 | wrefresh(list); | |
b1c5f1c6 SR |
227 | |
228 | continue; /* wait for another key press */ | |
229 | } else | |
230 | i = choice - 1; | |
231 | } else if (key == KEY_DOWN || key == '+') { | |
232 | if (choice == max_choice - 1) { | |
2982de69 | 233 | if (scroll + choice >= item_count() - 1) |
b1c5f1c6 SR |
234 | continue; |
235 | /* Scroll list up */ | |
236 | if (list_height > 1) { | |
237 | /* De-highlight current last item before scrolling up */ | |
2982de69 SR |
238 | item_set(scroll + max_choice - 1); |
239 | print_item(list, | |
240 | max_choice - 1, | |
241 | FALSE); | |
b1c5f1c6 SR |
242 | scrollok(list, TRUE); |
243 | wscrl(list, 1); | |
244 | scrollok(list, FALSE); | |
245 | } | |
246 | scroll++; | |
2982de69 SR |
247 | item_set(scroll + max_choice - 1); |
248 | print_item(list, max_choice - 1, TRUE); | |
b1c5f1c6 | 249 | |
2982de69 | 250 | print_arrows(dialog, choice, item_count(), |
dec69da8 | 251 | scroll, box_y, box_x + check_x + 5, list_height); |
b1c5f1c6 | 252 | |
f043ca43 ST |
253 | wnoutrefresh(dialog); |
254 | wrefresh(list); | |
b1c5f1c6 SR |
255 | |
256 | continue; /* wait for another key press */ | |
257 | } else | |
258 | i = choice + 1; | |
259 | } | |
260 | if (i != choice) { | |
261 | /* De-highlight current item */ | |
2982de69 SR |
262 | item_set(scroll + choice); |
263 | print_item(list, choice, FALSE); | |
b1c5f1c6 SR |
264 | /* Highlight new item */ |
265 | choice = i; | |
2982de69 SR |
266 | item_set(scroll + choice); |
267 | print_item(list, choice, TRUE); | |
f043ca43 ST |
268 | wnoutrefresh(dialog); |
269 | wrefresh(list); | |
b1c5f1c6 SR |
270 | } |
271 | continue; /* wait for another key press */ | |
272 | } | |
273 | switch (key) { | |
274 | case 'H': | |
275 | case 'h': | |
276 | case '?': | |
2982de69 SR |
277 | button = 1; |
278 | /* fall-through */ | |
279 | case 'S': | |
280 | case 's': | |
281 | case ' ': | |
282 | case '\n': | |
283 | item_foreach() | |
284 | item_set_selected(0); | |
285 | item_set(scroll + choice); | |
286 | item_set_selected(1); | |
287 | delwin(list); | |
b1c5f1c6 | 288 | delwin(dialog); |
2982de69 | 289 | return button; |
b1c5f1c6 SR |
290 | case TAB: |
291 | case KEY_LEFT: | |
292 | case KEY_RIGHT: | |
293 | button = ((key == KEY_LEFT ? --button : ++button) < 0) | |
294 | ? 1 : (button > 1 ? 0 : button); | |
295 | ||
296 | print_buttons(dialog, height, width, button); | |
297 | wrefresh(dialog); | |
298 | break; | |
b1c5f1c6 SR |
299 | case 'X': |
300 | case 'x': | |
301 | key = ESC; | |
302 | case ESC: | |
303 | break; | |
304 | } | |
305 | ||
306 | /* Now, update everything... */ | |
307 | doupdate(); | |
308 | } | |
2982de69 | 309 | delwin(list); |
b1c5f1c6 | 310 | delwin(dialog); |
2982de69 | 311 | return 255; /* ESC pressed */ |
1da177e4 | 312 | } |