@Override
public void onMouseOut(MouseOutEvent event) {
highlightingManager.setHighlighting(false);
}
}, MouseOutEvent.getType());
popup.addHandler(new PopupOpacityChangedEventHandler() {
@Override
public void onOpacityChangeStarted(PopupOpacityChangedEvent event) {
if (event.getOpacity() == Opacity.TRANSPARENT) {
highlightingManager.setHighlighting(false);
}