package NET.worlds.scape;

import java.io.IOException;
import java.util.Enumeration;
import java.util.Vector;

public class DPState extends SuperRoot {
   public static final int INFINITY = 60000;
   protected Vector connections = new Vector();
   protected int currentDist = 60000;
   protected long currentTime = 0L;
   private static Object classCookie = new Object();

   public DPState(int dist, DPAction conn) {
      this.currentDist = dist;
      this.currentTime = 0L;
      this.addConnection(conn);
   }

   public DPState() {
   }

   public void setDist(int d, int t) {
      if (this.currentTime <= t) {
         if (this.currentDist > d || this.currentTime != t) {
            this.currentDist = d;
            this.currentTime = t;
            Enumeration e = this.connections.elements();

            while (e.hasMoreElements()) {
               ((DPAction)e.nextElement()).handleDist(d, t);
            }
         }
      }
   }

   public int getDist() {
      return this.currentDist;
   }

   public Enumeration getConnections() {
      return this.connections.elements();
   }

   public Enumeration getPortals() {
      Vector v = new Vector(this.connections.size());
      Enumeration e = this.connections.elements();

      while (e.hasMoreElements()) {
         v.addElement(((DPAction)e.nextElement()).getOwner());
      }

      return v.elements();
   }

   public void addConnection(DPAction conn) {
      if (!this.connections.contains(conn)) {
         this.connections.addElement(conn);
      }
   }

   public void dropConnection(DPAction conn) {
      this.connections.removeElement(conn);
   }

   @Override
   public Object properties(int index, int offset, int mode, Object value) throws NoSuchPropertyException {
      Object ret = null;
      switch (index - offset) {
         case 0:
            if (mode == 0) {
               ret = IntegerPropertyEditor.make(new Property(this, index, "Current Distance"));
            } else if (mode == 1) {
               ret = new Integer(this.currentDist);
            } else if (mode == 2) {
               this.currentDist = (Integer)value;
            }
            break;
         case 1:
            if (mode == 0) {
               ret = new VectorProperty(this, index, "Connections");
            } else if (mode == 1) {
               ret = this.connections.clone();
            }
            break;
         default:
            ret = super.properties(index, offset + 2, mode, value);
      }

      return ret;
   }

   @Override
   public void saveState(Saver s) throws IOException {
      s.saveVersion(0, classCookie);
      super.saveState(s);
      s.saveVector(this.connections);
      s.saveInt(this.currentDist);
   }

   @Override
   public void restoreState(Restorer r) throws IOException, TooNewException {
      switch (r.restoreVersion(classCookie)) {
         case 0:
            super.restoreState(r);
            this.connections = r.restoreVector();
            this.currentDist = r.restoreInt();
            return;
         default:
            throw new TooNewException();
      }
   }

   @Override
   public String toString() {
      return super.getName();
   }
}