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   package org.lcsim.recon.tracking.seedtracker.steeringwrappers;
   
   import java.io.File;
   import org.lcsim.recon.tracking.seedtracker.*;
  import org.lcsim.util.Driver;
  
  /**
   *This is a wrapper around SeedTracker so that one can instantiate SeedTracker 
   * and a list of strategies without a constructor. This is necessary when 
   * using Jeremy's XML steering driver 
   * @author cozzy
   */
  public class SeedTrackerWrapper extends Driver{
      
      private boolean added = false;
      private SeedTracker seedTracker = null;
      
      public void setStrategyFile(String file) {
          if(added) throw new AlreadyAddedException();
          seedTracker = new SeedTracker(StrategyXMLUtils.getStrategyListFromFile(new File(file)));
          add(seedTracker); 
          added = true; 
      }
      
      public void setStrategyResource(String resource) {
          if(added) throw new AlreadyAddedException(); 
          seedTracker = new SeedTracker(StrategyXMLUtils.getStrategyListFromResource(resource)); 
          added = true; 
      }
      
      public void setStrategyResourceWithDefaultPrefix(String resource) {
          setStrategyResource(StrategyXMLUtils.getDefaultStrategiesPrefix() + resource);
      }
      
      public void setTimingPlots(boolean timing) {
      	if (!added) throw new NotAddedException();
      	seedTracker.setTimingPlots(timing);
      }
      
      public void setTrkCollectionName(String name) {
      	if (!added) throw new NotAddedException();
      	seedTracker.setTrkCollectionName(name);
  	}
      
      public void setInputCollectionName(String name) {
      	seedTracker.setInputCollectionName(name);
      }
      
      public void setMaxFit(int maxfit) {
      	seedTracker.setMaxFit(maxfit);
      }
      
      public void setBField(double bfield) {
      	seedTracker.setBField(bfield);
      }
      
      class AlreadyAddedException extends RuntimeException {
          public AlreadyAddedException(){
              super("SeedTracker already has been added"); 
          }
      }
      
      class NotAddedException extends RuntimeException {
      	public NotAddedException(){
      		super("SeedTracker has not been added, yet");
      	}
      }
  }