private void showClassSearchPopup() {
if (!classSearchPopup.isShowing()) {
Dimension size = getSize();
Dimension ps = classSearchPopup.getPreferredSize();
classSearchPopup.showPopup(
this,
size.width / 2 - ps.width / 2,
size.height / 3 - ps.height / 2,
ps.width,
ps.height);
classSearchField.selectAll();
}
}
