1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/kconfig/lxdialog/checklist.c Mon Jul 28 21:32:33 2008 +0000
1.3 @@ -0,0 +1,325 @@
1.4 +/*
1.5 + * checklist.c -- implements the checklist box
1.6 + *
1.7 + * ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
1.8 + * Stuart Herbert - S.Herbert@sheffield.ac.uk: radiolist extension
1.9 + * Alessandro Rubini - rubini@ipvvis.unipv.it: merged the two
1.10 + * MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
1.11 + *
1.12 + * This program is free software; you can redistribute it and/or
1.13 + * modify it under the terms of the GNU General Public License
1.14 + * as published by the Free Software Foundation; either version 2
1.15 + * of the License, or (at your option) any later version.
1.16 + *
1.17 + * This program is distributed in the hope that it will be useful,
1.18 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.19 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.20 + * GNU General Public License for more details.
1.21 + *
1.22 + * You should have received a copy of the GNU General Public License
1.23 + * along with this program; if not, write to the Free Software
1.24 + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
1.25 + */
1.26 +
1.27 +#include "dialog.h"
1.28 +
1.29 +static int list_width, check_x, item_x;
1.30 +
1.31 +/*
1.32 + * Print list item
1.33 + */
1.34 +static void print_item(WINDOW * win, int choice, int selected)
1.35 +{
1.36 + int i;
1.37 +
1.38 + /* Clear 'residue' of last item */
1.39 + wattrset(win, dlg.menubox.atr);
1.40 + wmove(win, choice, 0);
1.41 + for (i = 0; i < list_width; i++)
1.42 + waddch(win, ' ');
1.43 +
1.44 + wmove(win, choice, check_x);
1.45 + wattrset(win, selected ? dlg.check_selected.atr
1.46 + : dlg.check.atr);
1.47 + wprintw(win, "(%c)", item_is_tag('X') ? 'X' : ' ');
1.48 +
1.49 + wattrset(win, selected ? dlg.tag_selected.atr : dlg.tag.atr);
1.50 + mvwaddch(win, choice, item_x, item_str()[0]);
1.51 + wattrset(win, selected ? dlg.item_selected.atr : dlg.item.atr);
1.52 + waddstr(win, (char *)item_str() + 1);
1.53 + if (selected) {
1.54 + wmove(win, choice, check_x + 1);
1.55 + wrefresh(win);
1.56 + }
1.57 +}
1.58 +
1.59 +/*
1.60 + * Print the scroll indicators.
1.61 + */
1.62 +static void print_arrows(WINDOW * win, int choice, int item_no, int scroll,
1.63 + int y, int x, int height)
1.64 +{
1.65 + wmove(win, y, x);
1.66 +
1.67 + if (scroll > 0) {
1.68 + wattrset(win, dlg.uarrow.atr);
1.69 + waddch(win, ACS_UARROW);
1.70 + waddstr(win, "(-)");
1.71 + } else {
1.72 + wattrset(win, dlg.menubox.atr);
1.73 + waddch(win, ACS_HLINE);
1.74 + waddch(win, ACS_HLINE);
1.75 + waddch(win, ACS_HLINE);
1.76 + waddch(win, ACS_HLINE);
1.77 + }
1.78 +
1.79 + y = y + height + 1;
1.80 + wmove(win, y, x);
1.81 +
1.82 + if ((height < item_no) && (scroll + choice < item_no - 1)) {
1.83 + wattrset(win, dlg.darrow.atr);
1.84 + waddch(win, ACS_DARROW);
1.85 + waddstr(win, "(+)");
1.86 + } else {
1.87 + wattrset(win, dlg.menubox_border.atr);
1.88 + waddch(win, ACS_HLINE);
1.89 + waddch(win, ACS_HLINE);
1.90 + waddch(win, ACS_HLINE);
1.91 + waddch(win, ACS_HLINE);
1.92 + }
1.93 +}
1.94 +
1.95 +/*
1.96 + * Display the termination buttons
1.97 + */
1.98 +static void print_buttons(WINDOW * dialog, int height, int width, int selected)
1.99 +{
1.100 + int x = width / 2 - 11;
1.101 + int y = height - 2;
1.102 +
1.103 + print_button(dialog, "Select", y, x, selected == 0);
1.104 + print_button(dialog, " Help ", y, x + 14, selected == 1);
1.105 +
1.106 + wmove(dialog, y, x + 1 + 14 * selected);
1.107 + wrefresh(dialog);
1.108 +}
1.109 +
1.110 +/*
1.111 + * Display a dialog box with a list of options that can be turned on or off
1.112 + * in the style of radiolist (only one option turned on at a time).
1.113 + */
1.114 +int dialog_checklist(const char *title, const char *prompt, int height,
1.115 + int width, int list_height)
1.116 +{
1.117 + int i, x, y, box_x, box_y;
1.118 + int key = 0, button = 0, choice = 0, scroll = 0, max_choice;
1.119 + WINDOW *dialog, *list;
1.120 +
1.121 + /* which item to highlight */
1.122 + item_foreach() {
1.123 + if (item_is_tag('X'))
1.124 + choice = item_n();
1.125 + if (item_is_selected()) {
1.126 + choice = item_n();
1.127 + break;
1.128 + }
1.129 + }
1.130 +
1.131 +do_resize:
1.132 + if (getmaxy(stdscr) < (height + 6))
1.133 + return -ERRDISPLAYTOOSMALL;
1.134 + if (getmaxx(stdscr) < (width + 6))
1.135 + return -ERRDISPLAYTOOSMALL;
1.136 +
1.137 + max_choice = MIN(list_height, item_count());
1.138 +
1.139 + /* center dialog box on screen */
1.140 + x = (COLS - width) / 2;
1.141 + y = (LINES - height) / 2;
1.142 +
1.143 + draw_shadow(stdscr, y, x, height, width);
1.144 +
1.145 + dialog = newwin(height, width, y, x);
1.146 + keypad(dialog, TRUE);
1.147 +
1.148 + draw_box(dialog, 0, 0, height, width,
1.149 + dlg.dialog.atr, dlg.border.atr);
1.150 + wattrset(dialog, dlg.border.atr);
1.151 + mvwaddch(dialog, height - 3, 0, ACS_LTEE);
1.152 + for (i = 0; i < width - 2; i++)
1.153 + waddch(dialog, ACS_HLINE);
1.154 + wattrset(dialog, dlg.dialog.atr);
1.155 + waddch(dialog, ACS_RTEE);
1.156 +
1.157 + print_title(dialog, title, width);
1.158 +
1.159 + wattrset(dialog, dlg.dialog.atr);
1.160 + print_autowrap(dialog, prompt, width - 2, 1, 3);
1.161 +
1.162 + list_width = width - 6;
1.163 + box_y = height - list_height - 5;
1.164 + box_x = (width - list_width) / 2 - 1;
1.165 +
1.166 + /* create new window for the list */
1.167 + list = subwin(dialog, list_height, list_width, y + box_y + 1,
1.168 + x + box_x + 1);
1.169 +
1.170 + keypad(list, TRUE);
1.171 +
1.172 + /* draw a box around the list items */
1.173 + draw_box(dialog, box_y, box_x, list_height + 2, list_width + 2,
1.174 + dlg.menubox_border.atr, dlg.menubox.atr);
1.175 +
1.176 + /* Find length of longest item in order to center checklist */
1.177 + check_x = 0;
1.178 + item_foreach()
1.179 + check_x = MAX(check_x, strlen(item_str()) + 4);
1.180 +
1.181 + check_x = (list_width - check_x) / 2;
1.182 + item_x = check_x + 4;
1.183 +
1.184 + if (choice >= list_height) {
1.185 + scroll = choice - list_height + 1;
1.186 + choice -= scroll;
1.187 + }
1.188 +
1.189 + /* Print the list */
1.190 + for (i = 0; i < max_choice; i++) {
1.191 + item_set(scroll + i);
1.192 + print_item(list, i, i == choice);
1.193 + }
1.194 +
1.195 + print_arrows(dialog, choice, item_count(), scroll,
1.196 + box_y, box_x + check_x + 5, list_height);
1.197 +
1.198 + print_buttons(dialog, height, width, 0);
1.199 +
1.200 + wnoutrefresh(dialog);
1.201 + wnoutrefresh(list);
1.202 + doupdate();
1.203 +
1.204 + while (key != KEY_ESC) {
1.205 + key = wgetch(dialog);
1.206 +
1.207 + for (i = 0; i < max_choice; i++) {
1.208 + item_set(i + scroll);
1.209 + if (toupper(key) == toupper(item_str()[0]))
1.210 + break;
1.211 + }
1.212 +
1.213 + if (i < max_choice || key == KEY_UP || key == KEY_DOWN ||
1.214 + key == '+' || key == '-') {
1.215 + if (key == KEY_UP || key == '-') {
1.216 + if (!choice) {
1.217 + if (!scroll)
1.218 + continue;
1.219 + /* Scroll list down */
1.220 + if (list_height > 1) {
1.221 + /* De-highlight current first item */
1.222 + item_set(scroll);
1.223 + print_item(list, 0, FALSE);
1.224 + scrollok(list, TRUE);
1.225 + wscrl(list, -1);
1.226 + scrollok(list, FALSE);
1.227 + }
1.228 + scroll--;
1.229 + item_set(scroll);
1.230 + print_item(list, 0, TRUE);
1.231 + print_arrows(dialog, choice, item_count(),
1.232 + scroll, box_y, box_x + check_x + 5, list_height);
1.233 +
1.234 + wnoutrefresh(dialog);
1.235 + wrefresh(list);
1.236 +
1.237 + continue; /* wait for another key press */
1.238 + } else
1.239 + i = choice - 1;
1.240 + } else if (key == KEY_DOWN || key == '+') {
1.241 + if (choice == max_choice - 1) {
1.242 + if (scroll + choice >= item_count() - 1)
1.243 + continue;
1.244 + /* Scroll list up */
1.245 + if (list_height > 1) {
1.246 + /* De-highlight current last item before scrolling up */
1.247 + item_set(scroll + max_choice - 1);
1.248 + print_item(list,
1.249 + max_choice - 1,
1.250 + FALSE);
1.251 + scrollok(list, TRUE);
1.252 + wscrl(list, 1);
1.253 + scrollok(list, FALSE);
1.254 + }
1.255 + scroll++;
1.256 + item_set(scroll + max_choice - 1);
1.257 + print_item(list, max_choice - 1, TRUE);
1.258 +
1.259 + print_arrows(dialog, choice, item_count(),
1.260 + scroll, box_y, box_x + check_x + 5, list_height);
1.261 +
1.262 + wnoutrefresh(dialog);
1.263 + wrefresh(list);
1.264 +
1.265 + continue; /* wait for another key press */
1.266 + } else
1.267 + i = choice + 1;
1.268 + }
1.269 + if (i != choice) {
1.270 + /* De-highlight current item */
1.271 + item_set(scroll + choice);
1.272 + print_item(list, choice, FALSE);
1.273 + /* Highlight new item */
1.274 + choice = i;
1.275 + item_set(scroll + choice);
1.276 + print_item(list, choice, TRUE);
1.277 + wnoutrefresh(dialog);
1.278 + wrefresh(list);
1.279 + }
1.280 + continue; /* wait for another key press */
1.281 + }
1.282 + switch (key) {
1.283 + case 'H':
1.284 + case 'h':
1.285 + case '?':
1.286 + button = 1;
1.287 + /* fall-through */
1.288 + case 'S':
1.289 + case 's':
1.290 + case ' ':
1.291 + case '\n':
1.292 + item_foreach()
1.293 + item_set_selected(0);
1.294 + item_set(scroll + choice);
1.295 + item_set_selected(1);
1.296 + delwin(list);
1.297 + delwin(dialog);
1.298 + return button;
1.299 + case TAB:
1.300 + case KEY_LEFT:
1.301 + case KEY_RIGHT:
1.302 + button = ((key == KEY_LEFT ? --button : ++button) < 0)
1.303 + ? 1 : (button > 1 ? 0 : button);
1.304 +
1.305 + print_buttons(dialog, height, width, button);
1.306 + wrefresh(dialog);
1.307 + break;
1.308 + case 'X':
1.309 + case 'x':
1.310 + key = KEY_ESC;
1.311 + break;
1.312 + case KEY_ESC:
1.313 + key = on_key_esc(dialog);
1.314 + break;
1.315 + case KEY_RESIZE:
1.316 + delwin(list);
1.317 + delwin(dialog);
1.318 + on_key_resize();
1.319 + goto do_resize;
1.320 + }
1.321 +
1.322 + /* Now, update everything... */
1.323 + doupdate();
1.324 + }
1.325 + delwin(list);
1.326 + delwin(dialog);
1.327 + return key; /* ESC pressed */
1.328 +}