void AddSubs(GfuiElem owner, List_adp allElemsInOwnerWin) {
for (int i = 0; i < owner.SubElems().Count(); i++) {
GfuiElemBase sub = (GfuiElemBase)owner.SubElems().Get_at(i);
if (sub.Click_able()) allElemsInOwnerWin.Add(sub);
AddSubs(sub, allElemsInOwnerWin);
}
}
@gplx.Internal protected void Focus(GfuiElem cur, boolean fwd) {
List_adp allElemsInOwnerWin = List_adp_.new_(); AddSubs(cur.OwnerWin(), allElemsInOwnerWin);
int curIdx = allElemsInOwnerWin.Idx_of(cur);
GfuiElem target = cur;
while (true) { // find next visible elem
int cycle = TabBox_.Cycle(fwd, curIdx, allElemsInOwnerWin.Count());
target = GfuiElem_.cast_(allElemsInOwnerWin.Get_at(cycle));
if (target.Visible()) break;
if (cycle == curIdx) break; // either (a) one elem in allElemsInOwnerWin or (b) n elems, and cycled back to start; break, else infinite loop
curIdx = cycle;
}
target.Focus();
}
