package org.opentrafficsim.road.gtu.lane;
   
   import java.rmi.RemoteException;
   
   import org.opentrafficsim.core.gtu.MoveCheckerException;
   import org.opentrafficsim.core.network.Network;
   import org.opentrafficsim.core.network.OTSNetwork;
   
   import nl.tudelft.simulation.event.EventInterface;
  import nl.tudelft.simulation.event.EventListenerInterface;
  
  /**
   * Abstract class that listens to move events of GTUs so checks can be performed.
   * <p>
   * Copyright (c) 2013-2020 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
   * BSD-style license. See <a href="http://opentrafficsim.org/node/13">OpenTrafficSim License</a>.
   * <p>
   * @version $Revision$, $LastChangedDate$, by $Author$, initial version Aug 6, 2019 <br>
   * @author <a href="http://www.tbm.tudelft.nl/averbraeck">Alexander Verbraeck</a>
   * @author <a href="http://www.tudelft.nl/pknoppers">Peter Knoppers</a>
   * @author <a href="http://www.transport.citg.tudelft.nl">Wouter Schakel</a>
   */
  public abstract class AbstractLaneBasedMoveChecker implements EventListenerInterface
  {
  
      /** Network. */
      private final OTSNetwork network;
  
      /**
       * Constructor.
       * @param network OTSNetwork; network
       */
      public AbstractLaneBasedMoveChecker(final OTSNetwork network)
      {
          network.addListener(this, Network.GTU_ADD_EVENT);
          network.addListener(this, Network.GTU_REMOVE_EVENT);
          this.network = network;
      }
  
      /** {@inheritDoc} */
      @Override
      public void notify(final EventInterface event) throws RemoteException
      {
          if (event.getType().equals(LaneBasedGTU.LANEBASED_MOVE_EVENT))
          {
              try
              {
                  checkMove(((LaneBasedGTU) event.getSource()));
              }
              catch (Exception ex)
              {
                  throw new MoveCheckerException(ex);
              }
          }
          else if (event.getType().equals(Network.GTU_ADD_EVENT))
          {
              this.network.getGTU((String) event.getContent()).addListener(this, LaneBasedGTU.LANEBASED_MOVE_EVENT);
          }
          else if (event.getType().equals(Network.GTU_REMOVE_EVENT))
          {
              this.network.getGTU((String) event.getContent()).removeListener(this, LaneBasedGTU.LANEBASED_MOVE_EVENT);
          }
          else
          {
              throw new RemoteException("AbstractMoveChecker is a listener to an unknown event type.");
          }
      }
  
      /**
       * Check the move of the given GTU.
       * @param gtu LaneBasedGTU; GTU.
       * @throws Exception thrown when something is not all right
       */
      public abstract void checkMove(LaneBasedGTU gtu) throws Exception;
  
  }