public void setVisible(boolean b) {
KeyboardFocusManager keyboardFocusManager =
KeyboardFocusManager.getCurrentKeyboardFocusManager();
if (b) {
keyboardFocusManager.addKeyEventDispatcher(keyManager);
} else {
keyboardFocusManager.removeKeyEventDispatcher(keyManager);
}
super.setVisible(b);
Window owner = getOwner();
if (owner != null) {
owner.requestFocus();
if (lastFocusOwner != null) {
lastFocusOwner.requestFocusInWindow();
}
}
}
/** Register us as KeyEventDispatcher and property "managingFocus" listeners. */
private void addTraversingOutListeners(KeyboardFocusManager kfm) {
kfm.addKeyEventDispatcher(this);
kfm.addPropertyChangeListener("managingFocus", this);
}