dir = DirectoryLocator.getDirectory(DirectoryServicesGroup.class, false);
setData(dir.toArray(true, false), tree, selectBtn, cancelBtn);
dirServ = DirectoryLocator.getDirectory(DirectoryService.class);
DefaultComboBoxModel model = new DefaultComboBoxModel(dirServ.toArray(false));
model.insertElementAt("", 0);
model.setSelectedItem("");
FilteredComboBoxModel filteredModel = new FilteredComboBoxModel(cbSearch, new FilteredComboBoxModel.MaskChecker(), false) {
@Override
public Object addItem(String txt) {