You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
435 lines
11 KiB
435 lines
11 KiB
/*
|
|
* menubox.c -- implements the menu box
|
|
*
|
|
* ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
|
|
* MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcapw@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.
|
|
*/
|
|
|
|
/*
|
|
* Changes by Clifford Wolf (god@clifford.at)
|
|
*
|
|
* [ 1998-06-13 ]
|
|
*
|
|
* *) A bugfix for the Page-Down problem
|
|
*
|
|
* *) Formerly when I used Page Down and Page Up, the cursor would be set
|
|
* to the first position in the menu box. Now lxdialog is a bit
|
|
* smarter and works more like other menu systems (just have a look at
|
|
* it).
|
|
*
|
|
* *) Formerly if I selected something my scrolling would be broken because
|
|
* lxdialog is re-invoked by the Menuconfig shell script, can't
|
|
* remember the last scrolling position, and just sets it so that the
|
|
* cursor is at the bottom of the box. Now it writes the temporary file
|
|
* lxdialog.scrltmp which contains this information. The file is
|
|
* deleted by lxdialog if the user leaves a submenu or enters a new
|
|
* one, but it would be nice if Menuconfig could make another "rm -f"
|
|
* just to be sure. Just try it out - you will recognise a difference!
|
|
*
|
|
* [ 1998-06-14 ]
|
|
*
|
|
* *) Now lxdialog is crash-safe against broken "lxdialog.scrltmp" files
|
|
* and menus change their size on the fly.
|
|
*
|
|
* *) If for some reason the last scrolling position is not saved by
|
|
* lxdialog, it sets the scrolling so that the selected item is in the
|
|
* middle of the menu box, not at the bottom.
|
|
*
|
|
* 02 January 1999, Michael Elizabeth Chastain (mec@shout.net)
|
|
* Reset 'scroll' to 0 if the value from lxdialog.scrltmp is bogus.
|
|
* This fixes a bug in Menuconfig where using ' ' to descend into menus
|
|
* would leave mis-synchronized lxdialog.scrltmp files lying around,
|
|
* fscanf would read in 'scroll', and eventually that value would get used.
|
|
*/
|
|
|
|
#include "dialog.h"
|
|
|
|
static int menu_width, item_x;
|
|
|
|
/*
|
|
* Print menu item
|
|
*/
|
|
static void do_print_item(WINDOW * win, const char *item, int line_y,
|
|
int selected, int hotkey)
|
|
{
|
|
int j;
|
|
char *menu_item = malloc(menu_width + 1);
|
|
|
|
strncpy(menu_item, item, menu_width - item_x);
|
|
menu_item[menu_width - item_x] = '\0';
|
|
j = first_alpha(menu_item, "YyNnMmHh");
|
|
|
|
/* Clear 'residue' of last item */
|
|
wattrset(win, dlg.menubox.atr);
|
|
wmove(win, line_y, 0);
|
|
#if OLD_NCURSES
|
|
{
|
|
int i;
|
|
for (i = 0; i < menu_width; i++)
|
|
waddch(win, ' ');
|
|
}
|
|
#else
|
|
wclrtoeol(win);
|
|
#endif
|
|
wattrset(win, selected ? dlg.item_selected.atr : dlg.item.atr);
|
|
mvwaddstr(win, line_y, item_x, menu_item);
|
|
if (hotkey) {
|
|
wattrset(win, selected ? dlg.tag_key_selected.atr
|
|
: dlg.tag_key.atr);
|
|
mvwaddch(win, line_y, item_x + j, menu_item[j]);
|
|
}
|
|
if (selected) {
|
|
wmove(win, line_y, item_x + 1);
|
|
}
|
|
free(menu_item);
|
|
wrefresh(win);
|
|
}
|
|
|
|
#define print_item(index, choice, selected) \
|
|
do { \
|
|
item_set(index); \
|
|
do_print_item(menu, item_str(), choice, selected, !item_is_tag(':')); \
|
|
} while (0)
|
|
|
|
/*
|
|
* Print the scroll indicators.
|
|
*/
|
|
static void print_arrows(WINDOW * win, int item_no, int scroll, int y, int x,
|
|
int height)
|
|
{
|
|
int cur_y, cur_x;
|
|
|
|
getyx(win, cur_y, cur_x);
|
|
|
|
wmove(win, y, x);
|
|
|
|
if (scroll > 0) {
|
|
wattrset(win, dlg.uarrow.atr);
|
|
waddch(win, ACS_UARROW);
|
|
waddstr(win, "(-)");
|
|
} else {
|
|
wattrset(win, dlg.menubox.atr);
|
|
waddch(win, ACS_HLINE);
|
|
waddch(win, ACS_HLINE);
|
|
waddch(win, ACS_HLINE);
|
|
waddch(win, ACS_HLINE);
|
|
}
|
|
|
|
y = y + height + 1;
|
|
wmove(win, y, x);
|
|
wrefresh(win);
|
|
|
|
if ((height < item_no) && (scroll + height < item_no)) {
|
|
wattrset(win, dlg.darrow.atr);
|
|
waddch(win, ACS_DARROW);
|
|
waddstr(win, "(+)");
|
|
} else {
|
|
wattrset(win, dlg.menubox_border.atr);
|
|
waddch(win, ACS_HLINE);
|
|
waddch(win, ACS_HLINE);
|
|
waddch(win, ACS_HLINE);
|
|
waddch(win, ACS_HLINE);
|
|
}
|
|
|
|
wmove(win, cur_y, cur_x);
|
|
wrefresh(win);
|
|
}
|
|
|
|
/*
|
|
* Display the termination buttons.
|
|
*/
|
|
static void print_buttons(WINDOW * win, int height, int width, int selected)
|
|
{
|
|
int x = width / 2 - 16;
|
|
int y = height - 2;
|
|
|
|
print_button(win, "Select", y, x, selected == 0);
|
|
print_button(win, " Exit ", y, x + 12, selected == 1);
|
|
print_button(win, " Help ", y, x + 24, selected == 2);
|
|
|
|
wmove(win, y, x + 1 + 12 * selected);
|
|
wrefresh(win);
|
|
}
|
|
|
|
/* scroll up n lines (n may be negative) */
|
|
static void do_scroll(WINDOW *win, int *scroll, int n)
|
|
{
|
|
/* Scroll menu up */
|
|
scrollok(win, TRUE);
|
|
wscrl(win, n);
|
|
scrollok(win, FALSE);
|
|
*scroll = *scroll + n;
|
|
wrefresh(win);
|
|
}
|
|
|
|
/*
|
|
* Display a menu for choosing among a number of options
|
|
*/
|
|
int dialog_menu(const char *title, const char *prompt,
|
|
const void *selected, int *s_scroll)
|
|
{
|
|
int i, j, x, y, box_x, box_y;
|
|
int height, width, menu_height;
|
|
int key = 0, button = 0, scroll = 0, choice = 0;
|
|
int first_item = 0, max_choice;
|
|
WINDOW *dialog, *menu;
|
|
|
|
do_resize:
|
|
height = getmaxy(stdscr);
|
|
width = getmaxx(stdscr);
|
|
if (height < 15 || width < 65)
|
|
return -ERRDISPLAYTOOSMALL;
|
|
|
|
height -= 4;
|
|
width -= 5;
|
|
menu_height = height - 10;
|
|
|
|
max_choice = MIN(menu_height, item_count());
|
|
|
|
/* 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,
|
|
dlg.dialog.atr, dlg.border.atr);
|
|
wattrset(dialog, dlg.border.atr);
|
|
mvwaddch(dialog, height - 3, 0, ACS_LTEE);
|
|
for (i = 0; i < width - 2; i++)
|
|
waddch(dialog, ACS_HLINE);
|
|
wattrset(dialog, dlg.dialog.atr);
|
|
wbkgdset(dialog, dlg.dialog.atr & A_COLOR);
|
|
waddch(dialog, ACS_RTEE);
|
|
|
|
print_title(dialog, title, width);
|
|
|
|
wattrset(dialog, dlg.dialog.atr);
|
|
print_autowrap(dialog, prompt, width - 2, 1, 3);
|
|
|
|
menu_width = width - 6;
|
|
box_y = height - menu_height - 5;
|
|
box_x = (width - menu_width) / 2 - 1;
|
|
|
|
/* create new window for the menu */
|
|
menu = subwin(dialog, menu_height, menu_width,
|
|
y + box_y + 1, x + box_x + 1);
|
|
keypad(menu, TRUE);
|
|
|
|
/* draw a box around the menu items */
|
|
draw_box(dialog, box_y, box_x, menu_height + 2, menu_width + 2,
|
|
dlg.menubox_border.atr, dlg.menubox.atr);
|
|
|
|
if (menu_width >= 80)
|
|
item_x = (menu_width - 70) / 2;
|
|
else
|
|
item_x = 4;
|
|
|
|
/* Set choice to default item */
|
|
item_foreach()
|
|
if (selected && (selected == item_data()))
|
|
choice = item_n();
|
|
/* get the saved scroll info */
|
|
scroll = *s_scroll;
|
|
if ((scroll <= choice) && (scroll + max_choice > choice) &&
|
|
(scroll >= 0) && (scroll + max_choice <= item_count())) {
|
|
first_item = scroll;
|
|
choice = choice - scroll;
|
|
} else {
|
|
scroll = 0;
|
|
}
|
|
if ((choice >= max_choice)) {
|
|
if (choice >= item_count() - max_choice / 2)
|
|
scroll = first_item = item_count() - max_choice;
|
|
else
|
|
scroll = first_item = choice - max_choice / 2;
|
|
choice = choice - scroll;
|
|
}
|
|
|
|
/* Print the menu */
|
|
for (i = 0; i < max_choice; i++) {
|
|
print_item(first_item + i, i, i == choice);
|
|
}
|
|
|
|
wnoutrefresh(menu);
|
|
|
|
print_arrows(dialog, item_count(), scroll,
|
|
box_y, box_x + item_x + 1, menu_height);
|
|
|
|
print_buttons(dialog, height, width, 0);
|
|
wmove(menu, choice, item_x + 1);
|
|
wrefresh(menu);
|
|
|
|
while (key != KEY_ESC) {
|
|
key = wgetch(menu);
|
|
|
|
if (key < 256 && isalpha(key))
|
|
key = tolower(key);
|
|
|
|
if (strchr("ynmh", key))
|
|
i = max_choice;
|
|
else {
|
|
for (i = choice + 1; i < max_choice; i++) {
|
|
item_set(scroll + i);
|
|
j = first_alpha(item_str(), "YyNnMmHh");
|
|
if (key == tolower(item_str()[j]))
|
|
break;
|
|
}
|
|
if (i == max_choice)
|
|
for (i = 0; i < max_choice; i++) {
|
|
item_set(scroll + i);
|
|
j = first_alpha(item_str(), "YyNnMmHh");
|
|
if (key == tolower(item_str()[j]))
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (i < max_choice ||
|
|
key == KEY_UP || key == KEY_DOWN ||
|
|
key == '-' || key == '+' ||
|
|
key == KEY_PPAGE || key == KEY_NPAGE) {
|
|
/* Remove highligt of current item */
|
|
print_item(scroll + choice, choice, FALSE);
|
|
|
|
if (key == KEY_UP || key == '-') {
|
|
if (choice < 2 && scroll) {
|
|
/* Scroll menu down */
|
|
do_scroll(menu, &scroll, -1);
|
|
|
|
print_item(scroll, 0, FALSE);
|
|
} else
|
|
choice = MAX(choice - 1, 0);
|
|
|
|
} else if (key == KEY_DOWN || key == '+') {
|
|
print_item(scroll+choice, choice, FALSE);
|
|
|
|
if ((choice > max_choice - 3) &&
|
|
(scroll + max_choice < item_count())) {
|
|
/* Scroll menu up */
|
|
do_scroll(menu, &scroll, 1);
|
|
|
|
print_item(scroll+max_choice - 1,
|
|
max_choice - 1, FALSE);
|
|
} else
|
|
choice = MIN(choice + 1, max_choice - 1);
|
|
|
|
} else if (key == KEY_PPAGE) {
|
|
scrollok(menu, TRUE);
|
|
for (i = 0; (i < max_choice); i++) {
|
|
if (scroll > 0) {
|
|
do_scroll(menu, &scroll, -1);
|
|
print_item(scroll, 0, FALSE);
|
|
} else {
|
|
if (choice > 0)
|
|
choice--;
|
|
}
|
|
}
|
|
|
|
} else if (key == KEY_NPAGE) {
|
|
for (i = 0; (i < max_choice); i++) {
|
|
if (scroll + max_choice < item_count()) {
|
|
do_scroll(menu, &scroll, 1);
|
|
print_item(scroll+max_choice-1,
|
|
max_choice - 1, FALSE);
|
|
} else {
|
|
if (choice + 1 < max_choice)
|
|
choice++;
|
|
}
|
|
}
|
|
} else
|
|
choice = i;
|
|
|
|
print_item(scroll + choice, choice, TRUE);
|
|
|
|
print_arrows(dialog, item_count(), scroll,
|
|
box_y, box_x + item_x + 1, menu_height);
|
|
|
|
wnoutrefresh(dialog);
|
|
wrefresh(menu);
|
|
|
|
continue; /* wait for another key press */
|
|
}
|
|
|
|
switch (key) {
|
|
case KEY_LEFT:
|
|
case TAB:
|
|
case KEY_RIGHT:
|
|
button = ((key == KEY_LEFT ? --button : ++button) < 0)
|
|
? 2 : (button > 2 ? 0 : button);
|
|
|
|
print_buttons(dialog, height, width, button);
|
|
wrefresh(menu);
|
|
break;
|
|
case ' ':
|
|
case 's':
|
|
case 'y':
|
|
case 'n':
|
|
case 'm':
|
|
case '/':
|
|
/* save scroll info */
|
|
*s_scroll = scroll;
|
|
delwin(menu);
|
|
delwin(dialog);
|
|
item_set(scroll + choice);
|
|
item_set_selected(1);
|
|
switch (key) {
|
|
case 's':
|
|
return 3;
|
|
case 'y':
|
|
return 3;
|
|
case 'n':
|
|
return 4;
|
|
case 'm':
|
|
return 5;
|
|
case ' ':
|
|
return 6;
|
|
case '/':
|
|
return 7;
|
|
}
|
|
return 0;
|
|
case 'h':
|
|
case '?':
|
|
button = 2;
|
|
case '\n':
|
|
*s_scroll = scroll;
|
|
delwin(menu);
|
|
delwin(dialog);
|
|
item_set(scroll + choice);
|
|
item_set_selected(1);
|
|
return button;
|
|
case 'e':
|
|
case 'x':
|
|
key = KEY_ESC;
|
|
break;
|
|
case KEY_ESC:
|
|
key = on_key_esc(menu);
|
|
break;
|
|
case KEY_RESIZE:
|
|
on_key_resize();
|
|
delwin(menu);
|
|
delwin(dialog);
|
|
goto do_resize;
|
|
}
|
|
}
|
|
delwin(menu);
|
|
delwin(dialog);
|
|
return key; /* ESC pressed */
|
|
}
|