package NET.worlds.console;

import NET.worlds.scape.BumpEventTemp;
import NET.worlds.scape.BumpHandler;
import NET.worlds.scape.NoSuchPropertyException;
import NET.worlds.scape.Portal;
import NET.worlds.scape.Restorer;
import NET.worlds.scape.Room;
import NET.worlds.scape.Saver;
import NET.worlds.scape.SuperRoot;
import NET.worlds.scape.TooNewException;
import NET.worlds.scape.VectorProperty;
import java.io.IOException;
import java.util.Enumeration;
import java.util.Vector;

public class AddHandler extends SuperRoot implements BumpHandler {
   private Vector<SuperRoot> handlers = new Vector<SuperRoot>(1);
   private static Object classCookie = new Object();

   public AddHandler() {
   }

   public AddHandler(SuperRoot newhandler) {
      this.handlers.addElement(newhandler);
   }

   @Override
   public boolean handle(BumpEventTemp e) {
      Room sc = ((Portal)e.target).farSide().getRoom();

      assert sc instanceof Staircase || sc instanceof Stair;

      Enumeration<SuperRoot> enh = this.handlers.elements();

      while (enh.hasMoreElements()) {
         sc.addHandler(enh.nextElement());
      }

      return true;
   }

   @Override
   public void saveState(Saver s) throws IOException {
      s.saveVersion(2, classCookie);
      super.saveState(s);
      s.saveVector(this.handlers);
   }

   @Override
   public void restoreState(Restorer r) throws IOException, TooNewException {
      switch (r.restoreVersion(classCookie)) {
         case 1:
            super.restoreState(r);
         case 0:
            if (r.restoreBoolean()) {
               this.handlers.addElement((SuperRoot)r.restore());
            }
            break;
         case 2:
            super.restoreState(r);
            this.handlers = r.restoreVectorSuperRoot();
            break;
         default:
            throw new TooNewException();
      }
   }

   @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 = new VectorProperty(this, index, "Handlers to Add");
            } else if (mode == 1) {
               ret = this.handlers.clone();
            } else if (mode == 4) {
               this.handlers.removeElement(value);
            } else if (mode == 3) {
               this.handlers.addElement((SuperRoot)value);
            }
            break;
         default:
            ret = super.properties(index, offset + 1, mode, value);
      }

      return ret;
   }
}