int
set_menu_format(MENU *m, int rows, int cols)
{
if (rows < 0 || cols < 0) {
return (E_BAD_ARGUMENT);
}
if (m) {
if (Posted(m)) {
return (E_POSTED);
}
if (rows == 0) {
rows = FRows(m);
}
if (cols == 0) {
cols = FCols(m);
}
/* The pattern buffer is allocated after items have been */
/* connected */
if (Pattern(m)) {
IthPattern(m, 0) = '\0';
Pindex(m) = 0;
}
FRows(m) = rows;
FCols(m) = cols;
Cols(m) = min(cols, Nitems(m));
Rows(m) = (Nitems(m)-1) / cols + 1;
Height(m) = min(rows, Rows(m));
Top(m) = 0;
Current(m) = IthItem(m, 0);
SetLink(m);
_scale(m);
} else {
if (rows > 0) {
FRows(Dfl_Menu) = rows;
}
if (cols > 0) {
FCols(Dfl_Menu) = cols;
}
}
return (E_OK);
}
int
set_menu_opts(MENU *m, int opt)
{
ITEM **ip;
if (m) {
if (Posted(m)) {
return (E_POSTED);
}
/* Check to see if the ROWMAJOR option is changing. If so, */
/* set top and current to 0. */
if ((opt & O_ROWMAJOR) != RowMajor(m)) {
Top(m) = 0;
Current(m) = IthItem(m, 0);
(void) set_menu_format(m, FRows(m), FCols(m));
}
/* if O_NONCYCLIC option changed, set bit to re-link items */
if ((opt & O_NONCYCLIC) != (Mopt(m) & O_NONCYCLIC)) {
SetLink(m);
}
Mopt(m) = opt;
if (OneValue(m) && Items(m)) {
for (ip = Items(m); *ip; ip++) {
/* Unset values if selection not allowed. */
Value(*ip) = FALSE;
}
}
_scale(m); /* Redo sizing information */
} else {
Mopt(Dfl_Menu) = opt;
}
return (E_OK);
}
int
_match(MENU *m, char c, ITEM **current)
{
int i, j;
int found;
/*
* Indicates search has cycled past the current item. If the current
* item is matched after cycled is true then NO_MATCH results.
*/
int cycled;
/* If a backspace is encountered then search backward from the */
/* current item. Otherwise, search forward from the current item. */
i = Index(*current);
if (c && c != '\b') { /* c could be null */
if (Pindex(m)+1 > MaxName(m)) {
return (E_NO_MATCH);
}
IthPattern(m, Pindex(m)) = c;
IthPattern(m, ++Pindex(m)) = '\0';
if (--i < 0) {
i = Nitems(m)-1;
}
}
j = i;
found = FALSE;
cycled = FALSE;
do {
if (c == '\b') {
if (--i < 0) {
i = Nitems(m)-1;
}
} else {
if (++i >= Nitems(m)) {
i = 0;
}
}
if (substr(m, Pattern(m), Name(IthItem(m, i)))) {
found = TRUE;
break;
}
cycled = TRUE;
} while (i != j);
if (found) {
if (i == Index(*current) && cycled) {
return (E_NO_MATCH);
}
*current = IthItem(m, i);
} else {
if (c && c != '\b') {
Pindex(m) -= 1;
IthPattern(m, Pindex(m)) = '\0';
}
return (E_NO_MATCH);
}
return (E_OK);
}
