package nl.tudelft.goal.ut2004.visualizer.connection.client;
   
   import java.rmi.RemoteException;
   
   import nl.tudelft.goal.ut2004.visualizer.connection.EnvironmentService;
   import nl.tudelft.goal.ut2004.visualizer.connection.VisualizerService;
   
   import cz.cuni.amis.utils.flag.Flag;
   
  /**
   * Wrapper class that represents the {@link VisualizerService} to the
   * {@link UnrealGoalEnvironment}.
   * 
   * @author M.P. Korstanje
   * 
   */
  public class RemoteVisualizer {
  
  	private final Flag<Boolean> connectedFlag = new Flag<Boolean>();
  	private VisualizerService visualizer;
  	private boolean connected;
  	private EnvironmentService environment;
  
  	protected void setVisualizerService(VisualizerService visualizer) {
  		this.visualizer = visualizer;
  		setConnected(true);
  	}
  
  	public void setEnvironment(EnvironmentService client) {
  		try {
  			this.environment = client;
  			this.visualizer.registerEnvironment(client);
  		} catch (RemoteException e) {
  			// Connection failed? Update status.
  			disconnect();
  			e.printStackTrace();
  		}
  	}
  
  	private void setConnected(boolean connected) {
  		this.connected = connected;
  		connectedFlag.setFlag(connected);
  	}
  
  	public Flag<Boolean> getConnectedFlag() {
  		return connectedFlag;
  	}
  
  	public void disconnect() {
  		try {
  			if (visualizer != null)
  				visualizer.unregisterEnvironment(environment);
  		} catch (RemoteException e) {
  			// Ignore, we are disconnected now.
  			// e.printStackTrace();
  		}
  
  		environment = null;
  
  		setConnected(false);
  	}
  
  }