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
;
32 print_item (WINDOW
* win
, const char *item
, int status
,
33 int choice
, int selected
)
37 /* Clear 'residue' of last item */
38 wattrset (win
, menubox_attr
);
39 wmove (win
, choice
, 0);
40 for (i
= 0; i
< list_width
; i
++)
43 wmove (win
, choice
, check_x
);
44 wattrset (win
, selected
? check_selected_attr
: check_attr
);
45 if (checkflag
== FLAG_CHECK
)
46 wprintw (win
, "[%c]", status
? 'X' : ' ');
48 wprintw (win
, "(%c)", status
? 'X' : ' ');
50 wattrset (win
, selected
? tag_selected_attr
: tag_attr
);
51 mvwaddch(win
, choice
, item_x
, item
[0]);
52 wattrset (win
, selected
? item_selected_attr
: item_attr
);
53 waddstr (win
, (char *)item
+1);
55 wmove (win
, choice
, check_x
+1);
61 * Print the scroll indicators.
64 print_arrows (WINDOW
* win
, int choice
, int item_no
, int scroll
,
65 int y
, int x
, int height
)
70 wattrset (win
, uarrow_attr
);
71 waddch (win
, ACS_UARROW
);
75 wattrset (win
, menubox_attr
);
76 waddch (win
, ACS_HLINE
);
77 waddch (win
, ACS_HLINE
);
78 waddch (win
, ACS_HLINE
);
79 waddch (win
, ACS_HLINE
);
85 if ((height
< item_no
) && (scroll
+ choice
< item_no
- 1)) {
86 wattrset (win
, darrow_attr
);
87 waddch (win
, ACS_DARROW
);
91 wattrset (win
, menubox_border_attr
);
92 waddch (win
, ACS_HLINE
);
93 waddch (win
, ACS_HLINE
);
94 waddch (win
, ACS_HLINE
);
95 waddch (win
, ACS_HLINE
);
100 * Display the termination buttons
103 print_buttons( WINDOW
*dialog
, int height
, int width
, int selected
)
105 int x
= width
/ 2 - 11;
108 print_button (dialog
, "Select", y
, x
, selected
== 0);
109 print_button (dialog
, " Help ", y
, x
+ 14, selected
== 1);
111 wmove(dialog
, y
, x
+1 + 14*selected
);
116 * Display a dialog box with a list of options that can be turned on or off
117 * The `flag' parameter is used to select between radiolist and checklist.
120 dialog_checklist (const char *title
, const char *prompt
, int height
, int width
,
121 int list_height
, int item_no
, struct dialog_list_item
** items
,
125 int i
, x
, y
, box_x
, box_y
;
126 int key
= 0, button
= 0, choice
= 0, scroll
= 0, max_choice
, *status
;
127 WINDOW
*dialog
, *list
;
131 /* Allocate space for storing item on/off status */
132 if ((status
= malloc (sizeof (int) * item_no
)) == NULL
) {
135 "\nCan't allocate memory in dialog_checklist().\n");
139 /* Initializes status */
140 for (i
= 0; i
< item_no
; i
++) {
141 status
[i
] = (items
[i
]->selected
== 1); /* ON */
142 if ((!choice
&& status
[i
]) || items
[i
]->selected
== 2) /* SELECTED */
148 max_choice
= MIN (list_height
, item_no
);
150 /* center dialog box on screen */
151 x
= (COLS
- width
) / 2;
152 y
= (LINES
- height
) / 2;
154 draw_shadow (stdscr
, y
, x
, height
, width
);
156 dialog
= newwin (height
, width
, y
, x
);
157 keypad (dialog
, TRUE
);
159 draw_box (dialog
, 0, 0, height
, width
, dialog_attr
, border_attr
);
160 wattrset (dialog
, border_attr
);
161 mvwaddch (dialog
, height
-3, 0, ACS_LTEE
);
162 for (i
= 0; i
< width
- 2; i
++)
163 waddch (dialog
, ACS_HLINE
);
164 wattrset (dialog
, dialog_attr
);
165 waddch (dialog
, ACS_RTEE
);
167 if (title
!= NULL
&& strlen(title
) >= width
-2 ) {
168 /* truncate long title -- mec */
169 char * title2
= malloc(width
-2+1);
170 memcpy( title2
, title
, width
-2 );
171 title2
[width
-2] = '\0';
176 wattrset (dialog
, title_attr
);
177 mvwaddch (dialog
, 0, (width
- strlen(title
))/2 - 1, ' ');
178 waddstr (dialog
, (char *)title
);
179 waddch (dialog
, ' ');
182 wattrset (dialog
, dialog_attr
);
183 print_autowrap (dialog
, prompt
, width
- 2, 1, 3);
185 list_width
= width
- 6;
186 box_y
= height
- list_height
- 5;
187 box_x
= (width
- list_width
) / 2 - 1;
189 /* create new window for the list */
190 list
= subwin (dialog
, list_height
, list_width
, y
+box_y
+1, x
+box_x
+1);
194 /* draw a box around the list items */
195 draw_box (dialog
, box_y
, box_x
, list_height
+ 2, list_width
+ 2,
196 menubox_border_attr
, menubox_attr
);
198 /* Find length of longest item in order to center checklist */
200 for (i
= 0; i
< item_no
; i
++)
201 check_x
= MAX (check_x
, + strlen (items
[i
]->name
) + 4);
203 check_x
= (list_width
- check_x
) / 2;
204 item_x
= check_x
+ 4;
206 if (choice
>= list_height
) {
207 scroll
= choice
- list_height
+ 1;
212 for (i
= 0; i
< max_choice
; i
++) {
213 print_item (list
, items
[scroll
+ i
]->name
,
214 status
[i
+scroll
], i
, i
== choice
);
217 print_arrows(dialog
, choice
, item_no
, scroll
,
218 box_y
, box_x
+ check_x
+ 5, list_height
);
220 print_buttons(dialog
, height
, width
, 0);
223 wnoutrefresh (dialog
);
227 key
= wgetch (dialog
);
229 for (i
= 0; i
< max_choice
; i
++)
230 if (toupper(key
) == toupper(items
[scroll
+ i
]->name
[0]))
234 if ( i
< max_choice
|| key
== KEY_UP
|| key
== KEY_DOWN
||
235 key
== '+' || key
== '-' ) {
236 if (key
== KEY_UP
|| key
== '-') {
240 /* Scroll list down */
241 if (list_height
> 1) {
242 /* De-highlight current first item */
243 print_item (list
, items
[scroll
]->name
,
244 status
[scroll
], 0, FALSE
);
245 scrollok (list
, TRUE
);
247 scrollok (list
, FALSE
);
250 print_item (list
, items
[scroll
]->name
,
251 status
[scroll
], 0, TRUE
);
254 print_arrows(dialog
, choice
, item_no
, scroll
,
255 box_y
, box_x
+ check_x
+ 5, list_height
);
259 continue; /* wait for another key press */
262 } else if (key
== KEY_DOWN
|| key
== '+') {
263 if (choice
== max_choice
- 1) {
264 if (scroll
+ choice
>= item_no
- 1)
267 if (list_height
> 1) {
268 /* De-highlight current last item before scrolling up */
269 print_item (list
, items
[scroll
+ max_choice
- 1]->name
,
270 status
[scroll
+ max_choice
- 1],
271 max_choice
- 1, FALSE
);
272 scrollok (list
, TRUE
);
274 scrollok (list
, FALSE
);
277 print_item (list
, items
[scroll
+ max_choice
- 1]->name
,
278 status
[scroll
+ max_choice
- 1],
279 max_choice
- 1, TRUE
);
282 print_arrows(dialog
, choice
, item_no
, scroll
,
283 box_y
, box_x
+ check_x
+ 5, list_height
);
287 continue; /* wait for another key press */
292 /* De-highlight current item */
293 print_item (list
, items
[scroll
+ choice
]->name
,
294 status
[scroll
+ choice
], choice
, FALSE
);
295 /* Highlight new item */
297 print_item (list
, items
[scroll
+ choice
]->name
,
298 status
[scroll
+ choice
], choice
, TRUE
);
302 continue; /* wait for another key press */
308 for (i
= 0; i
< item_no
; i
++)
309 items
[i
]->selected
= 0;
310 items
[scroll
+ choice
]->selected
= 1;
317 button
= ((key
== KEY_LEFT
? --button
: ++button
) < 0)
318 ? 1 : (button
> 1 ? 0 : button
);
320 print_buttons(dialog
, height
, width
, button
);
328 if (flag
== FLAG_CHECK
) {
329 status
[scroll
+ choice
] = !status
[scroll
+ choice
];
330 wmove (list
, choice
, check_x
);
331 wattrset (list
, check_selected_attr
);
332 wprintw (list
, "[%c]", status
[scroll
+ choice
] ? 'X' : ' ');
334 if (!status
[scroll
+ choice
]) {
335 for (i
= 0; i
< item_no
; i
++)
337 status
[scroll
+ choice
] = 1;
338 for (i
= 0; i
< max_choice
; i
++)
339 print_item (list
, items
[scroll
+ i
]->name
,
340 status
[scroll
+ i
], i
, i
== choice
);
346 for (i
= 0; i
< item_no
; i
++) {
347 items
[i
]->selected
= status
[i
];
350 for (i
= 0; i
< item_no
; i
++)
351 items
[i
]->selected
= 0;
352 items
[scroll
+ choice
]->selected
= 1;
364 /* Now, update everything... */
371 return -1; /* ESC pressed */
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