git.gag.com Git - debian/openrocket/blob - src/net/sf/openrocket/simulation/listeners/InterruptListener.java

   1 package net.sf.openrocket.simulation.listeners;
   2
   3 import java.util.Collection;
   4
   5 import net.sf.openrocket.simulation.FlightEvent;
   6 import net.sf.openrocket.simulation.SimulationStatus;
   7 import net.sf.openrocket.simulation.exception.SimulationCancelledException;
   8
   9
  10 /**
  11  * A simulation listener that throws a {@link SimulationCancelledException} if
  12  * this thread has been interrupted.  The conditions is checked every time a step
  13  * is taken.
  14  *
  15  * @author Sampo Niskanen <sampo.niskanen@iki.fi>
  16  */
  17 public class InterruptListener extends AbstractSimulationListener {
  18
  19         public static final InterruptListener INSTANCE = new InterruptListener();
  20
  21         @Override
  22         public Collection<FlightEvent> stepTaken(SimulationStatus status)
  23         throws SimulationCancelledException {
  24
  25                 if (Thread.interrupted()) {
  26                         throw new SimulationCancelledException("The simulation was interrupted.");
  27                 }
  28
  29                 return null;
  30         }
  31 }