public void releaseInterfaceVisualizer(JPanel panel) {
Observer observer = (Observer) panel.getClientProperty("intf_obs");
if (observer == null) {
logger.fatal("Error when releasing panel, observer is null");
return;
}
this.deleteObserver(observer);
}
public JPanel getInterfaceVisualizer() {
JPanel panel = new JPanel();
panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));
final NumberFormat form = NumberFormat.getNumberInstance();
final JLabel positionLabel = new JLabel();
positionLabel.setText(
"x="
+ form.format(getXCoordinate())
+ " "
+ "y="
+ form.format(getYCoordinate())
+ " "
+ "z="
+ form.format(getZCoordinate()));
panel.add(positionLabel);
Observer observer;
this.addObserver(
observer =
new Observer() {
public void update(Observable obs, Object obj) {
positionLabel.setText(
"x="
+ form.format(getXCoordinate())
+ " "
+ "y="
+ form.format(getYCoordinate())
+ " "
+ "z="
+ form.format(getZCoordinate()));
}
});
// Saving observer reference for releaseInterfaceVisualizer
panel.putClientProperty("intf_obs", observer);
return panel;
}