635 lines
19 KiB
C
635 lines
19 KiB
C
/*
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* checklist.c -- implements the checklist box
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*
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* AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
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*
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* Substantial rennovation: 12/18/95, Jordan K. Hubbard
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <dialog.h>
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#include "dialog.priv.h"
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static void print_item(WINDOW *win, unsigned char *tag, unsigned char *item, int status, int choice, int selected, dialogMenuItem *me, int list_width, int item_x, int check_x);
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#define DREF(di, item) ((di) ? &((di)[(item)]) : NULL)
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/*
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* Display a dialog box with a list of options that can be turned on or off
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*/
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int
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dialog_checklist(unsigned char *title, unsigned char *prompt, int height, int width,
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int list_height, int cnt, void *it, unsigned char *result)
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{
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int i, j, x, y, cur_x, cur_y, old_x, old_y, box_x, box_y, key = 0, button,
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choice, l, k, scroll, max_choice, item_no = 0, *status;
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int redraw_menu = FALSE, cursor_reset = FALSE;
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int rval = 0, onlist = 1, ok_space, cancel_space;
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char okButton, cancelButton;
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WINDOW *dialog, *list;
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unsigned char **items = NULL;
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dialogMenuItem *ditems;
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int list_width, check_x, item_x;
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/* Allocate space for storing item on/off status */
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if ((status = alloca(sizeof(int) * abs(cnt))) == NULL) {
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endwin();
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fprintf(stderr, "\nCan't allocate memory in dialog_checklist().\n");
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exit(-1);
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}
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draw:
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choice = scroll = button = 0;
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/* Previous calling syntax, e.g. just a list of strings? */
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if (cnt >= 0) {
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items = it;
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ditems = NULL;
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item_no = cnt;
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/* Initializes status */
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for (i = 0; i < item_no; i++)
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status[i] = !strcasecmp(items[i*3 + 2], "on");
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}
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/* It's the new specification format - fake the rest of the code out */
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else {
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item_no = abs(cnt);
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ditems = it;
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if (!items)
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items = (unsigned char **)alloca((item_no * 3) * sizeof(unsigned char *));
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/* Initializes status */
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for (i = 0; i < item_no; i++) {
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status[i] = ditems[i].checked ? ditems[i].checked(&ditems[i]) : FALSE;
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items[i*3] = ditems[i].prompt;
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items[i*3 + 1] = ditems[i].title;
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items[i*3 + 2] = status[i] ? "on" : "off";
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}
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}
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max_choice = MIN(list_height, item_no);
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check_x = 0;
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item_x = 0;
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/* Find length of longest item in order to center checklist */
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for (i = 0; i < item_no; i++) {
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l = strlen(items[i*3]);
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for (j = 0; j < item_no; j++) {
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k = strlen(items[j*3 + 1]);
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check_x = MAX(check_x, l + k + 6);
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}
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item_x = MAX(item_x, l);
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}
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if (height < 0)
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height = strheight(prompt)+list_height+4+2;
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if (width < 0) {
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i = strwidth(prompt);
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j = ((title != NULL) ? strwidth(title) : 0);
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width = MAX(i,j);
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width = MAX(width,check_x+4)+4;
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}
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width = MAX(width,24);
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if (width > COLS)
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width = COLS;
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if (height > LINES)
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height = LINES;
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/* center dialog box on screen */
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x = (COLS - width)/2;
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y = (LINES - height)/2;
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#ifdef HAVE_NCURSES
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if (use_shadow)
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draw_shadow(stdscr, y, x, height, width);
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#endif
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dialog = newwin(height, width, y, x);
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if (dialog == NULL) {
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endwin();
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fprintf(stderr, "\nnewwin(%d,%d,%d,%d) failed, maybe wrong dims\n", height,width, y, x);
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return -1;
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}
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keypad(dialog, TRUE);
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draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
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wattrset(dialog, border_attr);
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wmove(dialog, height-3, 0);
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waddch(dialog, ACS_LTEE);
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for (i = 0; i < width-2; i++)
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waddch(dialog, ACS_HLINE);
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wattrset(dialog, dialog_attr);
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waddch(dialog, ACS_RTEE);
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wmove(dialog, height-2, 1);
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for (i = 0; i < width-2; i++)
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waddch(dialog, ' ');
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if (title != NULL) {
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wattrset(dialog, title_attr);
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wmove(dialog, 0, (width - strlen(title))/2 - 1);
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waddch(dialog, ' ');
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waddstr(dialog, title);
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waddch(dialog, ' ');
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}
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wattrset(dialog, dialog_attr);
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wmove(dialog, 1, 2);
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print_autowrap(dialog, prompt, height - 1, width - 2, width, 1, 2, TRUE, FALSE);
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list_width = width - 6;
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getyx(dialog, cur_y, cur_x);
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box_y = cur_y + 1;
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box_x = (width - list_width) / 2 - 1;
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/* create new window for the list */
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list = subwin(dialog, list_height, list_width, y + box_y + 1, x + box_x + 1);
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if (list == NULL) {
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delwin(dialog);
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endwin();
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fprintf(stderr, "\nsubwin(dialog,%d,%d,%d,%d) failed, maybe wrong dims\n", list_height, list_width,
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y + box_y + 1, x + box_x + 1);
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return -1;
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}
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keypad(list, TRUE);
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/* draw a box around the list items */
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draw_box(dialog, box_y, box_x, list_height + 2, list_width + 2, menubox_border_attr, menubox_attr);
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check_x = (list_width - check_x) / 2;
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item_x = check_x + item_x + 6;
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/* Print the list */
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for (i = 0; i < max_choice; i++)
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print_item(list, items[i * 3], items[i * 3 + 1], status[i], i, i == choice, DREF(ditems, i), list_width, item_x, check_x);
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wnoutrefresh(list);
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print_arrows(dialog, scroll, list_height, item_no, box_x, box_y, check_x + 4, cur_x, cur_y);
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display_helpline(dialog, height - 1, width);
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x = width / 2 - 11;
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y = height - 2;
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/* Is this a fancy new style argument string where we get to override
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* the buttons, or an old style one where they're fixed?
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*/
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if (ditems && result) {
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cancelButton = toupper(ditems[CANCEL_BUTTON].prompt[0]);
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print_button(dialog, ditems[CANCEL_BUTTON].prompt, y, x + strlen(ditems[OK_BUTTON].prompt) + 5, ditems[CANCEL_BUTTON].checked ? ditems[CANCEL_BUTTON].checked(&ditems[CANCEL_BUTTON]) : FALSE);
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okButton = toupper(ditems[OK_BUTTON].prompt[0]);
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print_button(dialog, ditems[OK_BUTTON].prompt, y, x, ditems[OK_BUTTON].checked ? ditems[OK_BUTTON].checked(&ditems[OK_BUTTON]) : TRUE);
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}
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else {
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cancelButton = 'C';
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print_button(dialog, "Cancel", y, x + 14, FALSE);
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okButton = 'O';
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print_button(dialog, " OK ", y, x, TRUE);
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}
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wnoutrefresh(dialog);
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wmove(list, choice, check_x+1);
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wrefresh(list);
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while (key != ESC) {
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key = wgetch(dialog);
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/* Shortcut to OK? */
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if (toupper(key) == okButton) {
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if (ditems) {
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if (result && ditems[OK_BUTTON].fire) {
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int st;
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WINDOW *save;
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save = dupwin(newscr);
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st = ditems[OK_BUTTON].fire(&ditems[OK_BUTTON]);
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if (st & DITEM_RESTORE) {
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touchwin(save);
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wrefresh(save);
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}
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delwin(save);
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}
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}
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else if (result) {
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*result = '\0';
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for (i = 0; i < item_no; i++) {
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if (status[i]) {
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strcat(result, items[i*3]);
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strcat(result, "\n");
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}
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}
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}
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rval = 0;
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key = ESC; /* Lemme out! */
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break;
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}
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/* Shortcut to cancel? */
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if (toupper(key) == cancelButton) {
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if (ditems && result && ditems[CANCEL_BUTTON].fire) {
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int st;
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WINDOW *save;
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save = dupwin(newscr);
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st = ditems[CANCEL_BUTTON].fire(&ditems[CANCEL_BUTTON]);
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if (st & DITEM_RESTORE) {
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touchwin(save);
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wrefresh(save);
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wmove(dialog, cur_y, cur_x);
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}
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delwin(save);
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}
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rval = 1;
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key = ESC; /* I gotta go! */
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break;
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}
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/* Check if key pressed matches first character of any item tag in list */
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for (i = 0; i < max_choice; i++)
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if (key != ' ' && key < 0x100 && toupper(key) == toupper(items[(scroll+i)*3][0]))
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break;
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if (i < max_choice || (key >= '1' && key <= MIN('9', '0'+max_choice)) ||
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KEY_IS_UP(key) || KEY_IS_DOWN(key) || ((key == ' ' || key == '\n' ||
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key == '\r') && onlist)) {
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/* if moving from buttons to the list, reset and redraw buttons */
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if (!onlist) {
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onlist = 1;
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button = 0;
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if (ditems && result) {
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print_button(dialog, ditems[CANCEL_BUTTON].prompt, y, x + strlen(ditems[OK_BUTTON].prompt) + 5, ditems[CANCEL_BUTTON].checked ? ditems[CANCEL_BUTTON].checked(&ditems[CANCEL_BUTTON]) : button);
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print_button(dialog, ditems[OK_BUTTON].prompt, y, x, ditems[OK_BUTTON].checked ? ditems[OK_BUTTON].checked(&ditems[OK_BUTTON]) : !button);
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}
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else {
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print_button(dialog, "Cancel", y, x + 14, button);
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print_button(dialog, " OK ", y, x, !button);
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}
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wmove(list, choice, check_x+1);
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wnoutrefresh(dialog);
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wrefresh(list);
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}
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if (key >= '1' && key <= MIN('9', '0'+max_choice))
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i = key - '1';
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else if (KEY_IS_UP(key)) {
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if (!choice) {
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if (scroll) {
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/* Scroll list down */
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getyx(dialog, cur_y, cur_x); /* Save cursor position */
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if (list_height > 1) {
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/* De-highlight current first item before scrolling down */
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print_item(list, items[scroll * 3], items[scroll * 3 + 1], status[scroll], 0,
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FALSE, DREF(ditems, scroll), list_width, item_x, check_x);
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scrollok(list, TRUE);
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wscrl(list, -1);
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scrollok(list, FALSE);
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}
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scroll--;
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print_item(list, items[scroll*3], items[scroll*3 + 1], status[scroll], 0,
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TRUE, DREF(ditems, scroll), list_width, item_x, check_x);
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print_arrows(dialog, scroll, list_height, item_no, box_x, box_y, check_x + 4, cur_x, cur_y);
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wmove(list, choice, check_x+1);
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wnoutrefresh(dialog);
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wrefresh(list);
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}
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continue; /* wait for another key press */
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}
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else
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i = choice - 1;
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}
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else if (KEY_IS_DOWN(key)) {
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if (choice == max_choice - 1) {
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if (scroll + choice < item_no - 1) {
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/* Scroll list up */
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getyx(dialog, cur_y, cur_x); /* Save cursor position */
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if (list_height > 1) {
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/* De-highlight current last item before scrolling up */
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print_item(list, items[(scroll + max_choice - 1) * 3],
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items[(scroll + max_choice - 1) * 3 + 1],
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status[scroll + max_choice - 1], max_choice - 1,
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FALSE, DREF(ditems, scroll + max_choice - 1), list_width, item_x, check_x);
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scrollok(list, TRUE);
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scroll(list);
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scrollok(list, FALSE);
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}
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scroll++;
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print_item(list, items[(scroll + max_choice - 1) * 3],
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items[(scroll + max_choice - 1) * 3 + 1],
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status[scroll + max_choice - 1], max_choice - 1, TRUE,
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DREF(ditems, scroll + max_choice - 1), list_width, item_x, check_x);
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print_arrows(dialog, scroll, list_height, item_no, box_x, box_y, check_x + 4, cur_x, cur_y);
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wmove(list, choice, check_x+1);
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wnoutrefresh(dialog);
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wrefresh(list);
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}
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continue; /* wait for another key press */
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}
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else
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i = choice + 1;
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}
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else if ((key == ' ' || key == '\n' || key == '\r') && onlist) { /* Toggle item status */
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char lbra = 0, rbra = 0, mark = 0;
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getyx(list, old_y, old_x); /* Save cursor position */
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if (ditems) {
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if (ditems[scroll + choice].fire) {
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int st;
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WINDOW *save;
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save = dupwin(newscr);
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st = ditems[scroll + choice].fire(&ditems[scroll + choice]); /* Call "fire" action */
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if (st & DITEM_RESTORE) {
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touchwin(save);
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wrefresh(save);
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}
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delwin(save);
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if (st & DITEM_REDRAW) {
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wclear(list);
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for (i = 0; i < item_no; i++)
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status[i] = ditems[i].checked ? ditems[i].checked(&ditems[i]) : FALSE;
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for (i = 0; i < max_choice; i++) {
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print_item(list, items[(scroll + i) * 3], items[(scroll + i) * 3 + 1],
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status[scroll + i], i, i == choice, DREF(ditems, scroll + i), list_width, item_x, check_x);
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}
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wnoutrefresh(list);
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print_arrows(dialog, scroll, list_height, item_no, box_x, box_y, check_x + 4,
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cur_x, cur_y);
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wrefresh(dialog);
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}
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if (st & DITEM_LEAVE_MENU) {
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/* Allow a fire action to take us out of the menu */
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key = ESC;
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rval = 0;
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break;
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}
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else if (st & DITEM_RECREATE) {
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delwin(list);
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delwin(dialog);
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dialog_clear();
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goto draw;
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}
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}
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status[scroll + choice] = ditems[scroll + choice].checked ?
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ditems[scroll + choice].checked(&ditems[scroll + choice]) : FALSE;
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lbra = ditems[scroll + choice].lbra;
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rbra = ditems[scroll + choice].rbra;
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mark = ditems[scroll + choice].mark;
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}
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else
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status[scroll + choice] = !status[scroll + choice];
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wmove(list, choice, check_x);
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wattrset(list, check_selected_attr);
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if (!lbra)
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lbra = '[';
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if (!rbra)
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rbra = ']';
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if (!mark)
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mark = 'X';
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wprintw(list, "%c%c%c", lbra, status[scroll + choice] ? mark : ' ', rbra);
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wmove(list, old_y, old_x); /* Restore cursor to previous position */
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wrefresh(list);
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continue; /* wait for another key press */
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}
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if (i != choice) {
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/* De-highlight current item */
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getyx(dialog, cur_y, cur_x); /* Save cursor position */
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print_item(list, items[(scroll + choice) * 3], items[(scroll + choice) * 3 + 1],
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status[scroll + choice], choice, FALSE, DREF(ditems, scroll + choice), list_width, item_x, check_x);
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/* Highlight new item */
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choice = i;
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print_item(list, items[(scroll + choice) * 3], items[(scroll + choice) * 3 + 1], status[scroll + choice], choice, TRUE, DREF(ditems, scroll + choice), list_width, item_x, check_x);
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wmove(list, choice, check_x+1); /* Restore cursor to previous position */
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wrefresh(list);
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}
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continue; /* wait for another key press */
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}
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switch (key) {
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case KEY_PPAGE: /* can we go up? */
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if (scroll > height - 4)
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scroll -= (height-4);
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else
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scroll = 0;
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redraw_menu = TRUE;
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if (!onlist) {
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onlist = 1;
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button = 0;
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}
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break;
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case KEY_NPAGE: /* can we go down a full page? */
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if (scroll + list_height >= item_no-1 - list_height) {
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scroll = item_no - list_height;
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if (scroll < 0)
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scroll = 0;
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}
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else
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scroll += list_height;
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redraw_menu = TRUE;
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if (!onlist) {
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onlist = 1;
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button = 0;
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}
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break;
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case KEY_HOME: /* go to the top */
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scroll = 0;
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choice = 0;
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redraw_menu = TRUE;
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cursor_reset = TRUE;
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onlist = 1;
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break;
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case KEY_END: /* Go to the bottom */
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scroll = item_no - list_height;
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if (scroll < 0)
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scroll = 0;
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choice = max_choice - 1;
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redraw_menu = TRUE;
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cursor_reset = TRUE;
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onlist = 1;
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break;
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case TAB:
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case KEY_BTAB:
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/* move to next component */
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if (onlist) { /* on list, next is ok button */
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onlist = 0;
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if (ditems && result) {
|
|
print_button(dialog, ditems[CANCEL_BUTTON].prompt, y, x + strlen(ditems[OK_BUTTON].prompt) + 5, ditems[CANCEL_BUTTON].checked ? ditems[CANCEL_BUTTON].checked(&ditems[CANCEL_BUTTON]) : button);
|
|
print_button(dialog, ditems[OK_BUTTON].prompt, y, x, ditems[OK_BUTTON].checked ? ditems[OK_BUTTON].checked(&ditems[OK_BUTTON]) : !button);
|
|
ok_space = 1;
|
|
cancel_space = strlen(ditems[OK_BUTTON].prompt) + 6;
|
|
}
|
|
else {
|
|
print_button(dialog, "Cancel", y, x + 14, button);
|
|
print_button(dialog, " OK ", y, x, !button);
|
|
ok_space = 3;
|
|
cancel_space = 15;
|
|
}
|
|
if (button)
|
|
wmove(dialog, y, x + cancel_space);
|
|
else
|
|
wmove(dialog, y, x + ok_space);
|
|
wrefresh(dialog);
|
|
break;
|
|
}
|
|
else if (button) { /* on cancel button, next is list */
|
|
button = 0;
|
|
onlist = 1;
|
|
redraw_menu = TRUE;
|
|
break;
|
|
}
|
|
/* on ok button, next is cancel button, same as left/right case */
|
|
|
|
case KEY_LEFT:
|
|
case KEY_RIGHT:
|
|
onlist = 0;
|
|
button = !button;
|
|
if (ditems && result) {
|
|
print_button(dialog, ditems[CANCEL_BUTTON].prompt, y, x + strlen(ditems[OK_BUTTON].prompt) + 5, ditems[CANCEL_BUTTON].checked ? ditems[CANCEL_BUTTON].checked(&ditems[CANCEL_BUTTON]) : button);
|
|
print_button(dialog, ditems[OK_BUTTON].prompt, y, x, ditems[OK_BUTTON].checked ? ditems[OK_BUTTON].checked(&ditems[OK_BUTTON]) : !button);
|
|
ok_space = 1;
|
|
cancel_space = strlen(ditems[OK_BUTTON].prompt) + 6;
|
|
}
|
|
else {
|
|
print_button(dialog, "Cancel", y, x + 14, button);
|
|
print_button(dialog, " OK ", y, x, !button);
|
|
ok_space = 3;
|
|
cancel_space = 15;
|
|
}
|
|
if (button)
|
|
wmove(dialog, y, x + cancel_space);
|
|
else
|
|
wmove(dialog, y, x + ok_space);
|
|
wrefresh(dialog);
|
|
break;
|
|
|
|
case ' ':
|
|
case '\n':
|
|
case '\r':
|
|
if (!onlist) {
|
|
if (ditems) {
|
|
if (result && ditems[button ? CANCEL_BUTTON : OK_BUTTON].fire) {
|
|
int st;
|
|
WINDOW *save = dupwin(newscr);
|
|
|
|
st = ditems[button ? CANCEL_BUTTON : OK_BUTTON].fire(&ditems[button ? CANCEL_BUTTON : OK_BUTTON]);
|
|
if (st & DITEM_RESTORE) {
|
|
touchwin(save);
|
|
wrefresh(save);
|
|
}
|
|
delwin(save);
|
|
if (st == DITEM_FAILURE)
|
|
continue;
|
|
}
|
|
}
|
|
else if (result) {
|
|
*result = '\0';
|
|
for (i = 0; i < item_no; i++) {
|
|
if (status[i]) {
|
|
strcat(result, items[i*3]);
|
|
strcat(result, "\n");
|
|
}
|
|
}
|
|
}
|
|
rval = button;
|
|
key = ESC; /* Bail out! */
|
|
break;
|
|
}
|
|
|
|
/* Let me outta here! */
|
|
case ESC:
|
|
rval = -1;
|
|
break;
|
|
|
|
/* Help! */
|
|
case KEY_F(1):
|
|
case '?':
|
|
display_helpfile();
|
|
break;
|
|
}
|
|
|
|
if (redraw_menu) {
|
|
getyx(list, old_y, old_x);
|
|
wclear(list);
|
|
for (i = 0; i < max_choice; i++)
|
|
print_item(list, items[(scroll + i) * 3], items[(scroll + i) * 3 + 1], status[scroll + i], i, i == choice, DREF(ditems, scroll + i), list_width, item_x, check_x);
|
|
print_arrows(dialog, scroll, list_height, item_no, box_x, box_y, check_x + 4, cur_x, cur_y);
|
|
|
|
/* redraw buttons to fix highlighting */
|
|
if (ditems && result) {
|
|
print_button(dialog, ditems[CANCEL_BUTTON].prompt, y, x + strlen(ditems[OK_BUTTON].prompt) + 5, ditems[CANCEL_BUTTON].checked ? ditems[CANCEL_BUTTON].checked(&ditems[CANCEL_BUTTON]) : button);
|
|
print_button(dialog, ditems[OK_BUTTON].prompt, y, x, ditems[OK_BUTTON].checked ? ditems[OK_BUTTON].checked(&ditems[OK_BUTTON]) : !button);
|
|
}
|
|
else {
|
|
print_button(dialog, "Cancel", y, x + 14, button);
|
|
print_button(dialog, " OK ", y, x, !button);
|
|
}
|
|
wnoutrefresh(dialog);
|
|
if (cursor_reset) {
|
|
wmove(list, choice, check_x+1);
|
|
cursor_reset = FALSE;
|
|
}
|
|
else {
|
|
wmove(list, old_y, old_x);
|
|
}
|
|
wrefresh(list);
|
|
redraw_menu = FALSE;
|
|
}
|
|
}
|
|
delwin(list);
|
|
delwin(dialog);
|
|
return rval;
|
|
}
|
|
|
|
|
|
/*
|
|
* Print list item
|
|
*/
|
|
static void
|
|
print_item(WINDOW *win, unsigned char *tag, unsigned char *item, int status, int choice, int selected, dialogMenuItem *me, int list_width, int item_x, int check_x)
|
|
{
|
|
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%c%c", me && me->lbra ? me->lbra : '[',
|
|
status ? me && me->mark ? me->mark : 'X' : ' ',
|
|
me && me->rbra ? me->rbra : ']');
|
|
wattrset(win, menubox_attr);
|
|
waddch(win, ' ');
|
|
wattrset(win, selected ? tag_key_selected_attr : tag_key_attr);
|
|
waddch(win, tag[0]);
|
|
wattrset(win, selected ? tag_selected_attr : tag_attr);
|
|
waddstr(win, tag + 1);
|
|
wmove(win, choice, item_x);
|
|
wattrset(win, selected ? item_selected_attr : item_attr);
|
|
waddstr(win, item);
|
|
/* If have a selection handler for this, call it */
|
|
if (me && me->selected) {
|
|
wrefresh(win);
|
|
me->selected(me, selected);
|
|
}
|
|
}
|
|
/* End of print_item() */
|