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Root/branches/iFabio/Chameleon/i386/config/lxdialog/checklist.c

Source at commit 296 created 12 years 10 months ago.
By ifabio, add i386 folder
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␊
26static int list_width, check_x, item_x;␊
27␊
28/*␊
29 * Print list item␊
30 */␊
31static void print_item(WINDOW * win, int choice, int selected)␊
32{␊
33␉int i;␊
34␉char *list_item = malloc(list_width + 1);␊
35␊
36␉strncpy(list_item, item_str(), list_width - item_x);␊
37␉list_item[list_width - item_x] = '\0';␊
38␊
39␉/* Clear 'residue' of last item */␊
40␉wattrset(win, dlg.menubox.atr);␊
41␉wmove(win, choice, 0);␊
42␉for (i = 0; i < list_width; i++)␊
43␉␉waddch(win, ' ');␊
44␊
45␉wmove(win, choice, check_x);␊
46␉wattrset(win, selected ? dlg.check_selected.atr␊
47␉␉ : dlg.check.atr);␊
48␉if (!item_is_tag(':'))␊
49␉␉wprintw(win, "(%c)", item_is_tag('X') ? 'X' : ' ');␊
50␊
51␉wattrset(win, selected ? dlg.tag_selected.atr : dlg.tag.atr);␊
52␉mvwaddch(win, choice, item_x, list_item[0]);␊
53␉wattrset(win, selected ? dlg.item_selected.atr : dlg.item.atr);␊
54␉waddstr(win, list_item + 1);␊
55␉if (selected) {␊
56␉␉wmove(win, choice, check_x + 1);␊
57␉␉wrefresh(win);␊
58␉}␊
59␉free(list_item);␊
60}␊
61␊
62/*␊
63 * Print the scroll indicators.␊
64 */␊
65static void print_arrows(WINDOW * win, int choice, int item_no, int scroll,␊
66␉ int y, int x, int height)␊
67{␊
68␉wmove(win, y, x);␊
69␊
70␉if (scroll > 0) {␊
71␉␉wattrset(win, dlg.uarrow.atr);␊
72␉␉waddch(win, ACS_UARROW);␊
73␉␉waddstr(win, "(-)");␊
74␉} else {␊
75␉␉wattrset(win, dlg.menubox.atr);␊
76␉␉waddch(win, ACS_HLINE);␊
77␉␉waddch(win, ACS_HLINE);␊
78␉␉waddch(win, ACS_HLINE);␊
79␉␉waddch(win, ACS_HLINE);␊
80␉}␊
81␊
82␉y = y + height + 1;␊
83␉wmove(win, y, x);␊
84␊
85␉if ((height < item_no) && (scroll + choice < item_no - 1)) {␊
86␉␉wattrset(win, dlg.darrow.atr);␊
87␉␉waddch(win, ACS_DARROW);␊
88␉␉waddstr(win, "(+)");␊
89␉} else {␊
90␉␉wattrset(win, dlg.menubox_border.atr);␊
91␉␉waddch(win, ACS_HLINE);␊
92␉␉waddch(win, ACS_HLINE);␊
93␉␉waddch(win, ACS_HLINE);␊
94␉␉waddch(win, ACS_HLINE);␊
95␉}␊
96}␊
97␊
98/*␊
99 * Display the termination buttons␊
100 */␊
101static void print_buttons(WINDOW * dialog, int height, int width, int selected)␊
102{␊
103␉int x = width / 2 - 11;␊
104␉int y = height - 2;␊
105␊
106␉print_button(dialog, gettext("Select"), y, x, selected == 0);␊
107␉print_button(dialog, gettext(" Help "), y, x + 14, selected == 1);␊
108␊
109␉wmove(dialog, y, x + 1 + 14 * selected);␊
110␉wrefresh(dialog);␊
111}␊
112␊
113/*␊
114 * Display a dialog box with a list of options that can be turned on or off␊
115 * in the style of radiolist (only one option turned on at a time).␊
116 */␊
117int dialog_checklist(const char *title, const char *prompt, int height,␊
118␉␉ int width, int list_height)␊
119{␊
120␉int i, x, y, box_x, box_y;␊
121␉int key = 0, button = 0, choice = 0, scroll = 0, max_choice;␊
122␉WINDOW *dialog, *list;␊
123␊
124␉/* which item to highlight */␊
125␉item_foreach() {␊
126␉␉if (item_is_tag('X'))␊
127␉␉␉choice = item_n();␊
128␉␉if (item_is_selected()) {␊
129␉␉␉choice = item_n();␊
130␉␉␉break;␊
131␉␉}␊
132␉}␊
133␊
134do_resize:␊
135␉if (getmaxy(stdscr) < (height + 6))␊
136␉␉return -ERRDISPLAYTOOSMALL;␊
137␉if (getmaxx(stdscr) < (width + 6))␊
138␉␉return -ERRDISPLAYTOOSMALL;␊
139␊
140␉max_choice = MIN(list_height, item_count());␊
141␊
142␉/* center dialog box on screen */␊
143␉x = (COLS - width) / 2;␊
144␉y = (LINES - height) / 2;␊
145␊
146␉draw_shadow(stdscr, y, x, height, width);␊
147␊
148␉dialog = newwin(height, width, y, x);␊
149␉keypad(dialog, TRUE);␊
150␊
151␉draw_box(dialog, 0, 0, height, width,␊
152␉␉ dlg.dialog.atr, dlg.border.atr);␊
153␉wattrset(dialog, dlg.border.atr);␊
154␉mvwaddch(dialog, height - 3, 0, ACS_LTEE);␊
155␉for (i = 0; i < width - 2; i++)␊
156␉␉waddch(dialog, ACS_HLINE);␊
157␉wattrset(dialog, dlg.dialog.atr);␊
158␉waddch(dialog, ACS_RTEE);␊
159␊
160␉print_title(dialog, title, width);␊
161␊
162␉wattrset(dialog, dlg.dialog.atr);␊
163␉print_autowrap(dialog, prompt, width - 2, 1, 3);␊
164␊
165␉list_width = width - 6;␊
166␉box_y = height - list_height - 5;␊
167␉box_x = (width - list_width) / 2 - 1;␊
168␊
169␉/* create new window for the list */␊
170␉list = subwin(dialog, list_height, list_width, y + box_y + 1,␊
171␉ x + box_x + 1);␊
172␊
173␉keypad(list, TRUE);␊
174␊
175␉/* draw a box around the list items */␊
176␉draw_box(dialog, box_y, box_x, list_height + 2, list_width + 2,␊
177␉ dlg.menubox_border.atr, dlg.menubox.atr);␊
178␊
179␉/* Find length of longest item in order to center checklist */␊
180␉check_x = 0;␊
181␉item_foreach()␊
182␉␉check_x = MAX(check_x, strlen(item_str()) + 4);␊
183␉check_x = MIN(check_x, list_width);␊
184␊
185␉check_x = (list_width - check_x) / 2;␊
186␉item_x = check_x + 4;␊
187␊
188␉if (choice >= list_height) {␊
189␉␉scroll = choice - list_height + 1;␊
190␉␉choice -= scroll;␊
191␉}␊
192␊
193␉/* Print the list */␊
194␉for (i = 0; i < max_choice; i++) {␊
195␉␉item_set(scroll + i);␊
196␉␉print_item(list, i, i == choice);␊
197␉}␊
198␊
199␉print_arrows(dialog, choice, item_count(), scroll,␊
200␉␉ box_y, box_x + check_x + 5, list_height);␊
201␊
202␉print_buttons(dialog, height, width, 0);␊
203␊
204␉wnoutrefresh(dialog);␊
205␉wnoutrefresh(list);␊
206␉doupdate();␊
207␊
208␉while (key != KEY_ESC) {␊
209␉␉key = wgetch(dialog);␊
210␊
211␉␉for (i = 0; i < max_choice; i++) {␊
212␉␉␉item_set(i + scroll);␊
213␉␉␉if (toupper(key) == toupper(item_str()[0]))␊
214␉␉␉␉break;␊
215␉␉}␊
216␊
217␉␉if (i < max_choice || key == KEY_UP || key == KEY_DOWN ||␊
218␉␉ key == '+' || key == '-') {␊
219␉␉␉if (key == KEY_UP || key == '-') {␊
220␉␉␉␉if (!choice) {␊
221␉␉␉␉␉if (!scroll)␊
222␉␉␉␉␉␉continue;␊
223␉␉␉␉␉/* Scroll list down */␊
224␉␉␉␉␉if (list_height > 1) {␊
225␉␉␉␉␉␉/* De-highlight current first item */␊
226␉␉␉␉␉␉item_set(scroll);␊
227␉␉␉␉␉␉print_item(list, 0, FALSE);␊
228␉␉␉␉␉␉scrollok(list, TRUE);␊
229␉␉␉␉␉␉wscrl(list, -1);␊
230␉␉␉␉␉␉scrollok(list, FALSE);␊
231␉␉␉␉␉}␊
232␉␉␉␉␉scroll--;␊
233␉␉␉␉␉item_set(scroll);␊
234␉␉␉␉␉print_item(list, 0, TRUE);␊
235␉␉␉␉␉print_arrows(dialog, choice, item_count(),␊
236␉␉␉␉␉␉ scroll, box_y, box_x + check_x + 5, list_height);␊
237␊
238␉␉␉␉␉wnoutrefresh(dialog);␊
239␉␉␉␉␉wrefresh(list);␊
240␊
241␉␉␉␉␉continue;␉/* wait for another key press */␊
242␉␉␉␉} else␊
243␉␉␉␉␉i = choice - 1;␊
244␉␉␉} else if (key == KEY_DOWN || key == '+') {␊
245␉␉␉␉if (choice == max_choice - 1) {␊
246␉␉␉␉␉if (scroll + choice >= item_count() - 1)␊
247␉␉␉␉␉␉continue;␊
248␉␉␉␉␉/* Scroll list up */␊
249␉␉␉␉␉if (list_height > 1) {␊
250␉␉␉␉␉␉/* De-highlight current last item before scrolling up */␊
251␉␉␉␉␉␉item_set(scroll + max_choice - 1);␊
252␉␉␉␉␉␉print_item(list,␊
253␉␉␉␉␉␉␉ max_choice - 1,␊
254␉␉␉␉␉␉␉ FALSE);␊
255␉␉␉␉␉␉scrollok(list, TRUE);␊
256␉␉␉␉␉␉wscrl(list, 1);␊
257␉␉␉␉␉␉scrollok(list, FALSE);␊
258␉␉␉␉␉}␊
259␉␉␉␉␉scroll++;␊
260␉␉␉␉␉item_set(scroll + max_choice - 1);␊
261␉␉␉␉␉print_item(list, max_choice - 1, TRUE);␊
262␊
263␉␉␉␉␉print_arrows(dialog, choice, item_count(),␊
264␉␉␉␉␉␉ scroll, box_y, box_x + check_x + 5, list_height);␊
265␊
266␉␉␉␉␉wnoutrefresh(dialog);␊
267␉␉␉␉␉wrefresh(list);␊
268␊
269␉␉␉␉␉continue;␉/* wait for another key press */␊
270␉␉␉␉} else␊
271␉␉␉␉␉i = choice + 1;␊
272␉␉␉}␊
273␉␉␉if (i != choice) {␊
274␉␉␉␉/* De-highlight current item */␊
275␉␉␉␉item_set(scroll + choice);␊
276␉␉␉␉print_item(list, choice, FALSE);␊
277␉␉␉␉/* Highlight new item */␊
278␉␉␉␉choice = i;␊
279␉␉␉␉item_set(scroll + choice);␊
280␉␉␉␉print_item(list, choice, TRUE);␊
281␉␉␉␉wnoutrefresh(dialog);␊
282␉␉␉␉wrefresh(list);␊
283␉␉␉}␊
284␉␉␉continue;␉/* wait for another key press */␊
285␉␉}␊
286␉␉switch (key) {␊
287␉␉case 'H':␊
288␉␉case 'h':␊
289␉␉case '?':␊
290␉␉␉button = 1;␊
291␉␉␉/* fall-through */␊
292␉␉case 'S':␊
293␉␉case 's':␊
294␉␉case ' ':␊
295␉␉case '\n':␊
296␉␉␉item_foreach()␊
297␉␉␉␉item_set_selected(0);␊
298␉␉␉item_set(scroll + choice);␊
299␉␉␉item_set_selected(1);␊
300␉␉␉delwin(list);␊
301␉␉␉delwin(dialog);␊
302␉␉␉return button;␊
303␉␉case TAB:␊
304␉␉case KEY_LEFT:␊
305␉␉case KEY_RIGHT:␊
306␉␉␉button = ((key == KEY_LEFT ? --button : ++button) < 0)␊
307␉␉␉ ? 1 : (button > 1 ? 0 : button);␊
308␊
309␉␉␉print_buttons(dialog, height, width, button);␊
310␉␉␉wrefresh(dialog);␊
311␉␉␉break;␊
312␉␉case 'X':␊
313␉␉case 'x':␊
314␉␉␉key = KEY_ESC;␊
315␉␉␉break;␊
316␉␉case KEY_ESC:␊
317␉␉␉key = on_key_esc(dialog);␊
318␉␉␉break;␊
319␉␉case KEY_RESIZE:␊
320␉␉␉delwin(list);␊
321␉␉␉delwin(dialog);␊
322␉␉␉on_key_resize();␊
323␉␉␉goto do_resize;␊
324␉␉}␊
325␊
326␉␉/* Now, update everything... */␊
327␉␉doupdate();␊
328␉}␊
329␉delwin(list);␊
330␉delwin(dialog);␊
331␉return key;␉␉/* ESC pressed */␊
332}␊
333

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