/*
* Read a character from the given window. Handle repainting here (to simplify
* things in the calling application). Also, if input-callback(s) are set up,
* poll the corresponding files and handle the updates, e.g., for displaying a
* tailbox.
*/
int
dlg_getc(WINDOW *win, int *fkey)
{
WINDOW *save_win = win;
int ch = ERR;
int before_chr;
int before_fkey;
int result;
bool done = FALSE;
bool literal = FALSE;
DIALOG_CALLBACK *p = 0;
int interval = (dialog_vars.timeout_secs * 1000);
time_t expired = time((time_t *) 0) + dialog_vars.timeout_secs;
time_t current;
if (may_handle_inputs())
wtimeout(win, WTIMEOUT_VAL);
else if (interval > 0)
wtimeout(win, interval);
while (!done) {
bool handle_others = FALSE;
/*
* If there was no pending file-input, check the keyboard.
*/
ch = really_getch(win, fkey);
if (literal) {
done = TRUE;
continue;
}
before_chr = ch;
before_fkey = *fkey;
ch = dlg_lookup_key(win, ch, fkey);
dlg_trace_chr(ch, *fkey);
current = time((time_t *) 0);
/*
* If we acquired a fkey value, then it is one of dialog's builtin
* codes such as DLGK_HELPFILE.
*/
if (!*fkey || *fkey != before_fkey) {
switch (ch) {
case CHR_LITERAL:
literal = TRUE;
keypad(win, FALSE);
continue;
case CHR_REPAINT:
(void) touchwin(win);
(void) wrefresh(curscr);
break;
case ERR: /* wtimeout() in effect; check for file I/O */
if (interval > 0
&& current >= expired) {
dlg_exiterr("timeout");
}
if (!valid_file(stdin)
|| !valid_file(dialog_state.screen_output)) {
ch = ESC;
done = TRUE;
} else if (check_inputs()) {
if (handle_inputs(win))
dlg_raise_window(win);
else
done = TRUE;
} else {
done = (interval <= 0);
}
break;
case DLGK_HELPFILE:
if (dialog_vars.help_file) {
int yold, xold;
getyx(win, yold, xold);
dialog_helpfile("HELP", dialog_vars.help_file, 0, 0);
dlg_raise_window(win);
wmove(win, yold, xold);
}
continue;
case DLGK_FIELD_PREV:
/* FALLTHRU */
case KEY_BTAB:
/* FALLTHRU */
case DLGK_FIELD_NEXT:
/* FALLTHRU */
case TAB:
/* Handle tab/backtab as a special case for traversing between
* the nominal "current" window, and other windows having
* callbacks. If the nominal (control) window closes, we'll
* close the windows with callbacks.
*/
if (dialog_state.getc_callbacks != 0 &&
(isBeforeChr(TAB) ||
isBeforeFkey(KEY_BTAB))) {
p = (isBeforeChr(TAB)
? next_callback(p)
: prev_callback(p));
if ((dialog_state.getc_redirect = p) != 0) {
win = p->win;
} else {
win = save_win;
}
dlg_raise_window(win);
break;
}
/* FALLTHRU */
default:
#ifdef NO_LEAKS
if (isBeforeChr(DLG_CTRL('P'))) {
/* for testing, ^P closes the connection */
close(0);
close(1);
close(2);
break;
}
#endif
handle_others = TRUE;
break;
#ifdef HAVE_DLG_TRACE
case CHR_TRACE:
dlg_trace_win(win);
break;
#endif
}
} else {
handle_others = TRUE;
}
if (handle_others) {
if ((p = dialog_state.getc_redirect) != 0) {
if (!(p->handle_getc(p, ch, *fkey, &result))) {
done = (p->win == save_win) && (!p->keep_win);
dlg_remove_callback(p);
dialog_state.getc_redirect = 0;
win = save_win;
}
} else {
done = TRUE;
}
}
}
if (literal)
keypad(win, TRUE);
return ch;
}
void File_Browser::_prev_callback()
{
prev_callback(true);
}