package NET.worlds.scape;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;

public class VisiAttribute extends Attribute {
   private static Object classCookie = new Object();

   public VisiAttribute(int attrID) {
      super(attrID);
   }

   public VisiAttribute() {
   }

   @Override
   protected void noteAddingTo(SuperRoot owner) {
      WObject w = (WObject)((Sharer)owner).getOwner();
      w._visibilityAttribute = this;
   }

   @Override
   public void detach() {
      WObject w = (WObject)((Sharer)this.getOwner()).getOwner();
      w._visibilityAttribute = null;
      super.detach();
   }

   @Override
   public void generateNetData(DataOutputStream s) throws IOException {
      s.writeBoolean(((WObject)this.getOwner().getOwner()).getVisible());
   }

   @Override
   public void setFromNetData(DataInputStream ds, int len) throws IOException {
      ((WObject)this.getOwner().getOwner()).setVisible(ds.readBoolean());
   }

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

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