private static void fixPopupSize(final Popup popup, final Component contents) {
if (!UIUtil.isUnderGTKLookAndFeel() || !(contents instanceof JPopupMenu)) return;
for (Class<?> aClass = popup.getClass();
aClass != null && Popup.class.isAssignableFrom(aClass);
aClass = aClass.getSuperclass()) {
try {
final Method getComponent = aClass.getDeclaredMethod("getComponent");
getComponent.setAccessible(true);
final Object component = getComponent.invoke(popup);
if (component instanceof JWindow) {
((JWindow) component).setSize(new Dimension(0, 0));
}
break;
} catch (Exception ignored) {
}
}
}