--- /dev/null
+/*
+ * checklist.c -- implements the checklist box
+ *
+ * ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
+ * Stuart Herbert - S.Herbert@sheffield.ac.uk: radiolist extension
+ * Alessandro Rubini - rubini@ipvvis.unipv.it: merged the two
+ * MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "dialog.h"
+
+static int list_width, check_x, item_x;
+
+/*
+ * Print list item
+ */
+static void print_item(WINDOW * win, const char *item, int status, int choice,
+ int selected)
+{
+ int i;
+
+ /* Clear 'residue' of last item */
+ wattrset(win, menubox_attr);
+ wmove(win, choice, 0);
+ for (i = 0; i < list_width; i++)
+ waddch(win, ' ');
+
+ wmove(win, choice, check_x);
+ wattrset(win, selected ? check_selected_attr : check_attr);
+ wprintw(win, "(%c)", status ? 'X' : ' ');
+
+ wattrset(win, selected ? tag_selected_attr : tag_attr);
+ mvwaddch(win, choice, item_x, item[0]);
+ wattrset(win, selected ? item_selected_attr : item_attr);
+ waddstr(win, (char *)item + 1);
+ if (selected) {
+ wmove(win, choice, check_x + 1);
+ wrefresh(win);
+ }
+}
+
+/*
+ * Print the scroll indicators.
+ */
+static void print_arrows(WINDOW * win, int choice, int item_no, int scroll,
+ int y, int x, int height)
+{
+ wmove(win, y, x);
+
+ if (scroll > 0) {
+ wattrset(win, uarrow_attr);
+ waddch(win, ACS_UARROW);
+ waddstr(win, "(-)");
+ } else {
+ wattrset(win, menubox_attr);
+ waddch(win, ACS_HLINE);
+ waddch(win, ACS_HLINE);
+ waddch(win, ACS_HLINE);
+ waddch(win, ACS_HLINE);
+ }
+
+ y = y + height + 1;
+ wmove(win, y, x);
+
+ if ((height < item_no) && (scroll + choice < item_no - 1)) {
+ wattrset(win, darrow_attr);
+ waddch(win, ACS_DARROW);
+ waddstr(win, "(+)");
+ } else {
+ wattrset(win, menubox_border_attr);
+ waddch(win, ACS_HLINE);
+ waddch(win, ACS_HLINE);
+ waddch(win, ACS_HLINE);
+ waddch(win, ACS_HLINE);
+ }
+}
+
+/*
+ * Display the termination buttons
+ */
+static void print_buttons(WINDOW * dialog, int height, int width, int selected)
+{
+ int x = width / 2 - 11;
+ int y = height - 2;
+
+ print_button(dialog, "Select", y, x, selected == 0);
+ print_button(dialog, " Help ", y, x + 14, selected == 1);
+
+ wmove(dialog, y, x + 1 + 14 * selected);
+ wrefresh(dialog);
+}
+
+/*
+ * Display a dialog box with a list of options that can be turned on or off
+ * in the style of radiolist (only one option turned on at a time).
+ */
+int dialog_checklist(const char *title, const char *prompt, int height,
+ int width, int list_height, int item_no,
+ const char *const *items)
+{
+ int i, x, y, box_x, box_y;
+ int key = 0, button = 0, choice = 0, scroll = 0, max_choice, *status;
+ WINDOW *dialog, *list;
+
+ /* Allocate space for storing item on/off status */
+ if ((status = malloc(sizeof(int) * item_no)) == NULL) {
+ endwin();
+ fprintf(stderr,
+ "\nCan't allocate memory in dialog_checklist().\n");
+ exit(-1);
+ }
+
+ /* Initializes status */
+ for (i = 0; i < item_no; i++) {
+ status[i] = !strcasecmp(items[i * 3 + 2], "on");
+ if ((!choice && status[i])
+ || !strcasecmp(items[i * 3 + 2], "selected"))
+ choice = i + 1;
+ }
+ if (choice)
+ choice--;
+
+ max_choice = MIN(list_height, item_no);
+
+ /* center dialog box on screen */
+ x = (COLS - width) / 2;
+ y = (LINES - height) / 2;
+
+ draw_shadow(stdscr, y, x, height, width);
+
+ dialog = newwin(height, width, y, x);
+ keypad(dialog, TRUE);
+
+ draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
+ wattrset(dialog, border_attr);
+ mvwaddch(dialog, height - 3, 0, ACS_LTEE);
+ for (i = 0; i < width - 2; i++)
+ waddch(dialog, ACS_HLINE);
+ wattrset(dialog, dialog_attr);
+ waddch(dialog, ACS_RTEE);
+
+ print_title(dialog, title, width);
+
+ wattrset(dialog, dialog_attr);
+ print_autowrap(dialog, prompt, width - 2, 1, 3);
+
+ list_width = width - 6;
+ box_y = height - list_height - 5;
+ box_x = (width - list_width) / 2 - 1;
+
+ /* create new window for the list */
+ list = subwin(dialog, list_height, list_width, y + box_y + 1,
+ x + box_x + 1);
+
+ keypad(list, TRUE);
+
+ /* draw a box around the list items */
+ draw_box(dialog, box_y, box_x, list_height + 2, list_width + 2,
+ menubox_border_attr, menubox_attr);
+
+ /* Find length of longest item in order to center checklist */
+ check_x = 0;
+ for (i = 0; i < item_no; i++)
+ check_x = MAX(check_x, +strlen(items[i * 3 + 1]) + 4);
+
+ check_x = (list_width - check_x) / 2;
+ item_x = check_x + 4;
+
+ if (choice >= list_height) {
+ scroll = choice - list_height + 1;
+ choice -= scroll;
+ }
+
+ /* Print the list */
+ for (i = 0; i < max_choice; i++) {
+ print_item(list, items[(scroll + i) * 3 + 1],
+ status[i + scroll], i, i == choice);
+ }
+
+ print_arrows(dialog, choice, item_no, scroll,
+ box_y, box_x + check_x + 5, list_height);
+
+ print_buttons(dialog, height, width, 0);
+
+ wnoutrefresh(dialog);
+ wnoutrefresh(list);
+ doupdate();
+
+ while (key != ESC) {
+ key = wgetch(dialog);
+
+ for (i = 0; i < max_choice; i++)
+ if (toupper(key) ==
+ toupper(items[(scroll + i) * 3 + 1][0]))
+ break;
+
+ if (i < max_choice || key == KEY_UP || key == KEY_DOWN ||
+ key == '+' || key == '-') {
+ if (key == KEY_UP || key == '-') {
+ if (!choice) {
+ if (!scroll)
+ continue;
+ /* Scroll list down */
+ if (list_height > 1) {
+ /* De-highlight current first item */
+ print_item(list, items[scroll * 3 + 1],
+ status[scroll], 0, FALSE);
+ scrollok(list, TRUE);
+ wscrl(list, -1);
+ scrollok(list, FALSE);
+ }
+ scroll--;
+ print_item(list, items[scroll * 3 + 1], status[scroll], 0, TRUE);
+ print_arrows(dialog, choice, item_no,
+ scroll, box_y, box_x + check_x + 5, list_height);
+
+ wnoutrefresh(dialog);
+ wrefresh(list);
+
+ continue; /* wait for another key press */
+ } else
+ i = choice - 1;
+ } else if (key == KEY_DOWN || key == '+') {
+ if (choice == max_choice - 1) {
+ if (scroll + choice >= item_no - 1)
+ continue;
+ /* Scroll list up */
+ if (list_height > 1) {
+ /* De-highlight current last item before scrolling up */
+ print_item(list, items[(scroll + max_choice - 1) * 3 + 1],
+ status[scroll + max_choice - 1],
+ max_choice - 1, FALSE);
+ scrollok(list, TRUE);
+ wscrl(list, 1);
+ scrollok(list, FALSE);
+ }
+ scroll++;
+ print_item(list, items[(scroll + max_choice - 1) * 3 + 1],
+ status[scroll + max_choice - 1], max_choice - 1, TRUE);
+
+ print_arrows(dialog, choice, item_no,
+ scroll, box_y, box_x + check_x + 5, list_height);
+
+ wnoutrefresh(dialog);
+ wrefresh(list);
+
+ continue; /* wait for another key press */
+ } else
+ i = choice + 1;
+ }
+ if (i != choice) {
+ /* De-highlight current item */
+ print_item(list, items[(scroll + choice) * 3 + 1],
+ status[scroll + choice], choice, FALSE);
+ /* Highlight new item */
+ choice = i;
+ print_item(list, items[(scroll + choice) * 3 + 1],
+ status[scroll + choice], choice, TRUE);
+ wnoutrefresh(dialog);
+ wrefresh(list);
+ }
+ continue; /* wait for another key press */
+ }
+ switch (key) {
+ case 'H':
+ case 'h':
+ case '?':
+ fprintf(stderr, "%s", items[(scroll + choice) * 3]);
+ delwin(dialog);
+ free(status);
+ return 1;
+ case TAB:
+ case KEY_LEFT:
+ case KEY_RIGHT:
+ button = ((key == KEY_LEFT ? --button : ++button) < 0)
+ ? 1 : (button > 1 ? 0 : button);
+
+ print_buttons(dialog, height, width, button);
+ wrefresh(dialog);
+ break;
+ case 'S':
+ case 's':
+ case ' ':
+ case '\n':
+ if (!button) {
+ if (!status[scroll + choice]) {
+ for (i = 0; i < item_no; i++)
+ status[i] = 0;
+ status[scroll + choice] = 1;
+ for (i = 0; i < max_choice; i++)
+ print_item(list, items[(scroll + i) * 3 + 1],
+ status[scroll + i], i, i == choice);
+ }
+ wnoutrefresh(dialog);
+ wrefresh(list);
+
+ for (i = 0; i < item_no; i++)
+ if (status[i])
+ fprintf(stderr, "%s", items[i * 3]);
+ } else
+ fprintf(stderr, "%s", items[(scroll + choice) * 3]);
+ delwin(dialog);
+ free(status);
+ return button;
+ case 'X':
+ case 'x':
+ key = ESC;
+ case ESC:
+ break;
+ }
+
+ /* Now, update everything... */
+ doupdate();
+ }
+
+ delwin(dialog);
+ free(status);
+ return -1; /* ESC pressed */
+}
