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
, 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 wprintw(win
, "(%c)", status
? 'X' : ' ');
46 wattrset(win
, selected
? tag_selected_attr
: tag_attr
);
47 mvwaddch(win
, choice
, item_x
, item
[0]);
48 wattrset(win
, selected
? item_selected_attr
: item_attr
);
49 waddstr(win
, (char *)item
+ 1);
51 wmove(win
, choice
, check_x
+ 1);
57 * Print the scroll indicators.
59 static void print_arrows(WINDOW
* win
, int choice
, int item_no
, int scroll
,
60 int y
, int x
, int height
)
65 wattrset(win
, uarrow_attr
);
66 waddch(win
, ACS_UARROW
);
69 wattrset(win
, menubox_attr
);
70 waddch(win
, ACS_HLINE
);
71 waddch(win
, ACS_HLINE
);
72 waddch(win
, ACS_HLINE
);
73 waddch(win
, ACS_HLINE
);
79 if ((height
< item_no
) && (scroll
+ choice
< item_no
- 1)) {
80 wattrset(win
, darrow_attr
);
81 waddch(win
, ACS_DARROW
);
84 wattrset(win
, menubox_border_attr
);
85 waddch(win
, ACS_HLINE
);
86 waddch(win
, ACS_HLINE
);
87 waddch(win
, ACS_HLINE
);
88 waddch(win
, ACS_HLINE
);
93 * Display the termination buttons
95 static void print_buttons(WINDOW
* dialog
, int height
, int width
, int selected
)
97 int x
= width
/ 2 - 11;
100 print_button(dialog
, "Select", y
, x
, selected
== 0);
101 print_button(dialog
, " Help ", y
, x
+ 14, selected
== 1);
103 wmove(dialog
, y
, x
+ 1 + 14 * selected
);
108 * Display a dialog box with a list of options that can be turned on or off
109 * in the style of radiolist (only one option turned on at a time).
111 int dialog_checklist(const char *title
, const char *prompt
, int height
,
112 int width
, int list_height
, int item_no
,
113 const char *const *items
)
115 int i
, x
, y
, box_x
, box_y
;
116 int key
= 0, button
= 0, choice
= 0, scroll
= 0, max_choice
, *status
;
117 WINDOW
*dialog
, *list
;
119 /* Allocate space for storing item on/off status */
120 if ((status
= malloc(sizeof(int) * item_no
)) == NULL
) {
123 "\nCan't allocate memory in dialog_checklist().\n");
127 /* Initializes status */
128 for (i
= 0; i
< item_no
; i
++) {
129 status
[i
] = !strcasecmp(items
[i
* 3 + 2], "on");
130 if ((!choice
&& status
[i
])
131 || !strcasecmp(items
[i
* 3 + 2], "selected"))
137 max_choice
= MIN(list_height
, item_no
);
139 /* center dialog box on screen */
140 x
= (COLS
- width
) / 2;
141 y
= (LINES
- height
) / 2;
143 draw_shadow(stdscr
, y
, x
, height
, width
);
145 dialog
= newwin(height
, width
, y
, x
);
146 keypad(dialog
, TRUE
);
148 draw_box(dialog
, 0, 0, height
, width
, dialog_attr
, border_attr
);
149 wattrset(dialog
, border_attr
);
150 mvwaddch(dialog
, height
- 3, 0, ACS_LTEE
);
151 for (i
= 0; i
< width
- 2; i
++)
152 waddch(dialog
, ACS_HLINE
);
153 wattrset(dialog
, dialog_attr
);
154 waddch(dialog
, ACS_RTEE
);
156 print_title(dialog
, title
, width
);
158 wattrset(dialog
, dialog_attr
);
159 print_autowrap(dialog
, prompt
, width
- 2, 1, 3);
161 list_width
= width
- 6;
162 box_y
= height
- list_height
- 5;
163 box_x
= (width
- list_width
) / 2 - 1;
165 /* create new window for the list */
166 list
= subwin(dialog
, list_height
, list_width
, y
+ box_y
+ 1,
171 /* draw a box around the list items */
172 draw_box(dialog
, box_y
, box_x
, list_height
+ 2, list_width
+ 2,
173 menubox_border_attr
, menubox_attr
);
175 /* Find length of longest item in order to center checklist */
177 for (i
= 0; i
< item_no
; i
++)
178 check_x
= MAX(check_x
, +strlen(items
[i
* 3 + 1]) + 4);
180 check_x
= (list_width
- check_x
) / 2;
181 item_x
= check_x
+ 4;
183 if (choice
>= list_height
) {
184 scroll
= choice
- list_height
+ 1;
189 for (i
= 0; i
< max_choice
; i
++) {
190 print_item(list
, items
[(scroll
+ i
) * 3 + 1],
191 status
[i
+ scroll
], i
, i
== choice
);
194 print_arrows(dialog
, choice
, item_no
, scroll
,
195 box_y
, box_x
+ check_x
+ 5, list_height
);
197 print_buttons(dialog
, height
, width
, 0);
200 wnoutrefresh(dialog
);
204 key
= wgetch(dialog
);
206 for (i
= 0; i
< max_choice
; i
++)
208 toupper(items
[(scroll
+ i
) * 3 + 1][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 */
220 print_item(list
, items
[scroll
* 3 + 1],
221 status
[scroll
], 0, FALSE
);
222 scrollok(list
, TRUE
);
224 scrollok(list
, FALSE
);
227 print_item(list
, items
[scroll
* 3 + 1], status
[scroll
], 0, TRUE
);
230 print_arrows(dialog
, choice
, item_no
,
231 scroll
, box_y
, box_x
+ check_x
+ 5, list_height
);
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_no
- 1)
243 if (list_height
> 1) {
244 /* De-highlight current last item before scrolling up */
245 print_item(list
, items
[(scroll
+ max_choice
- 1) * 3 + 1],
246 status
[scroll
+ max_choice
- 1],
247 max_choice
- 1, FALSE
);
248 scrollok(list
, TRUE
);
250 scrollok(list
, FALSE
);
253 print_item(list
, items
[(scroll
+ max_choice
- 1) * 3 + 1],
254 status
[scroll
+ max_choice
- 1], max_choice
- 1, TRUE
);
257 print_arrows(dialog
, choice
, item_no
,
258 scroll
, box_y
, box_x
+ check_x
+ 5, list_height
);
262 continue; /* wait for another key press */
267 /* De-highlight current item */
268 print_item(list
, items
[(scroll
+ choice
) * 3 + 1],
269 status
[scroll
+ choice
], choice
, FALSE
);
270 /* Highlight new item */
272 print_item(list
, items
[(scroll
+ choice
) * 3 + 1],
273 status
[scroll
+ choice
], choice
, TRUE
);
277 continue; /* wait for another key press */
283 fprintf(stderr
, "%s", items
[(scroll
+ choice
) * 3]);
290 button
= ((key
== KEY_LEFT
? --button
: ++button
) < 0)
291 ? 1 : (button
> 1 ? 0 : button
);
293 print_buttons(dialog
, height
, width
, button
);
301 if (!status
[scroll
+ choice
]) {
302 for (i
= 0; i
< item_no
; i
++)
304 status
[scroll
+ choice
] = 1;
305 for (i
= 0; i
< max_choice
; i
++)
306 print_item(list
, items
[(scroll
+ i
) * 3 + 1],
307 status
[scroll
+ i
], i
, i
== choice
);
312 for (i
= 0; i
< item_no
; i
++)
314 fprintf(stderr
, "%s", items
[i
* 3]);
316 fprintf(stderr
, "%s", items
[(scroll
+ choice
) * 3]);
327 /* Now, update everything... */
333 return -1; /* ESC pressed */
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