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Root/tags/2.0/i386/config/checklist.c

Source at commit 1808 created 12 years 3 months ago.
By blackosx, Revise layout of package installer 'Welcome' file so it looks cleaner. Change the copyright notice to begin from 2009 as seen in the Chameleon 2.0 r431 installer. Should this date be set earlier?
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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