public static void main(String... args) {
EventQueue.invokeLater(
new Runnable() {
@Override
public void run() {
createAndShowGUI();
}
});
}
/**
* Perform the specified Action on the object
*
* @param i zero-based index of actions
* @return true if the action was performed; otherwise false.
*/
public boolean doAccessibleAction(int i) {
if (i == 0) {
// Simulate a button click
Toolkit.getEventQueue()
.postEvent(
new ActionEvent(
MenuItem.this,
ActionEvent.ACTION_PERFORMED,
MenuItem.this.getActionCommand(),
EventQueue.getMostRecentEventTime(),
0));
return true;
} else {
return false;
}
}
@Override
public void popupMenuWillBecomeVisible(final PopupMenuEvent e) {
EventQueue.invokeLater(
new Runnable() {
@Override
public void run() {
JComboBox combo = (JComboBox) e.getSource();
Accessible a = combo.getAccessibleContext().getAccessibleChild(0);
// Or Accessible a = combo.getUI().getAccessibleChild(combo, 0);
if (a instanceof BasicComboPopup) {
BasicComboPopup pop = (BasicComboPopup) a;
Point p = new Point(combo.getSize().width, 0);
SwingUtilities.convertPointToScreen(p, combo);
pop.setLocation(p);
}
}
});
}