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* version 2 for more details (a copy is included in the LICENSE file that
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* 2 along with this work; if not, write to the Free Software Foundation,
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*/
/* @test
* @bug 4743225
* @summary Size of JComboBox list is wrong when list is populated via PopupMenuListener
* @author Alexander Potochkin
*/
import sun.awt.SunToolkit;
import javax.accessibility.AccessibleContext;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import javax.swing.event.PopupMenuEvent;
import javax.swing.event.PopupMenuListener;
import javax.swing.plaf.basic.BasicComboPopup;
import java.awt.FlowLayout;
import java.awt.Point;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.event.InputEvent;
public class bug4743225 extends JFrame {
private static JComboBox cb;
private static volatile boolean flag;
public bug4743225() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLayout(new FlowLayout());
cb = new JComboBox(new Object[] {"one", "two", "three"});
cb.addPopupMenuListener(new PopupMenuListener() {
public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
cb.addItem("Test");
}
public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
}
public void popupMenuCanceled(PopupMenuEvent e) {
}
});
add(cb);
pack();
}
public static BasicComboPopup getPopup() {
AccessibleContext c = cb.getAccessibleContext();
for(int i = 0; i < c.getAccessibleChildrenCount(); i ++) {
if (c.getAccessibleChild(i) instanceof BasicComboPopup) {
return (BasicComboPopup) c.getAccessibleChild(i);
}
}
throw new AssertionError("No BasicComboPopup found");
}
public static void main(String... args) throws Exception {
Robot robot = new Robot();
robot.setAutoDelay(20);
SunToolkit toolkit = (SunToolkit) Toolkit.getDefaultToolkit();
SwingUtilities.invokeAndWait(new Runnable() {
public void run() {
new bug4743225().setVisible(true);
}
});
toolkit.realSync();
// calling this method from main thread is ok
Point point = cb.getLocationOnScreen();
robot.mouseMove(point.x + 10, point.y + 10);
robot.mousePress(InputEvent.BUTTON1_MASK);
robot.mouseRelease(InputEvent.BUTTON1_MASK);
toolkit.realSync();
SwingUtilities.invokeAndWait(new Runnable() {
public void run() {
if(getPopup().getList().getLastVisibleIndex() == 3) {
flag = true;
}
}
});
if (!flag) {
throw new RuntimeException("The ComboBox popup wasn't correctly updated");
}
}
}