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[/] [or1k/] [trunk/] [linux/] [uClibc/] [extra/] [config/] [checklist.c] - Rev 1771
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/* * 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, checkflag; /* * 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); if (checkflag == FLAG_CHECK) wprintw (win, "[%c]", status ? 'X' : ' '); else 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 * The `flag' parameter is used to select between radiolist and checklist. */ int dialog_checklist (const char *title, const char *prompt, int height, int width, int list_height, int item_no, struct dialog_list_item ** items, int flag) { int i, x, y, box_x, box_y; int key = 0, button = 0, choice = 0, scroll = 0, max_choice, *status; WINDOW *dialog, *list; checkflag = flag; /* 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] = items[i]->selected; if (!choice && status[i]) choice = i; } 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); if (title != NULL && strlen(title) >= width-2 ) { /* truncate long title -- mec */ char * title2 = malloc(width-2+1); memcpy( title2, title, width-2 ); title2[width-2] = '\0'; title = title2; } if (title != NULL) { wattrset (dialog, title_attr); mvwaddch (dialog, 0, (width - strlen(title))/2 - 1, ' '); waddstr (dialog, (char *)title); waddch (dialog, ' '); } 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]->name) + 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]->name, 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 (list); wnoutrefresh (dialog); doupdate (); while (key != ESC) { key = wgetch (dialog); for (i = 0; i < max_choice; i++) if (toupper(key) == toupper(items[scroll + i]->name[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]->name, status[scroll], 0, FALSE); scrollok (list, TRUE); wscrl (list, -1); scrollok (list, FALSE); } scroll--; print_item (list, items[scroll]->name, status[scroll], 0, TRUE); wnoutrefresh (list); print_arrows(dialog, choice, item_no, scroll, box_y, box_x + check_x + 5, list_height); wrefresh (dialog); 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]->name, status[scroll + max_choice - 1], max_choice - 1, FALSE); scrollok (list, TRUE); scroll (list); scrollok (list, FALSE); } scroll++; print_item (list, items[scroll + max_choice - 1]->name, status[scroll + max_choice - 1], max_choice - 1, TRUE); wnoutrefresh (list); print_arrows(dialog, choice, item_no, scroll, box_y, box_x + check_x + 5, list_height); wrefresh (dialog); continue; /* wait for another key press */ } else i = choice + 1; } if (i != choice) { /* De-highlight current item */ print_item (list, items[scroll + choice]->name, status[scroll + choice], choice, FALSE); /* Highlight new item */ choice = i; print_item (list, items[scroll + choice]->name, status[scroll + choice], choice, TRUE); wnoutrefresh (list); wrefresh (dialog); } continue; /* wait for another key press */ } switch (key) { case 'H': case 'h': case '?': 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 (flag == FLAG_CHECK) { status[scroll + choice] = !status[scroll + choice]; wmove (list, choice, check_x); wattrset (list, check_selected_attr); wprintw (list, "[%c]", status[scroll + choice] ? 'X' : ' '); } else { 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]->name, status[scroll + i], i, i == choice); } } wnoutrefresh (list); wrefresh (dialog); for (i = 0; i < item_no; i++) { items[i]->selected = status[i]; } } 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 */ }
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