package NET.worlds.scape;

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

public class AdvancingAction extends Action {
   private Vector actions = new Vector();
   private int nextAction = 0;
   boolean singleTrigger = true;
   boolean inProgress = false;
   private static Object classCookie = new Object();

   @Override
   public Persister trigger(Event evt, Persister seqID) {
      if (this.singleTrigger && this.inProgress && seqID == null) {
         return null;
      } else {
         if (this.nextAction >= this.actions.size()) {
            this.nextAction = 0;
         }

         Action act = (Action)this.actions.elementAt(this.nextAction);
         Persister id = null;
         if (act != null) {
            id = act.trigger(evt, seqID);
            this.inProgress = id != null;
         }

         if (id == null || !this.singleTrigger) {
            this.nextAction++;
         }

         return id;
      }
   }

   public void addComponent(Action act) {
      this.actions.addElement(act);
   }

   public void insertComponent(Action act, int index) {
      this.actions.insertElementAt(act, index);
   }

   public boolean removeComponent(Action act) {
      return this.actions.removeElement(act);
   }

   public Enumeration getComponents() {
      return this.actions.elements();
   }

   @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) {
               VectorProperty vp = new VectorProperty(this, index, "Components");
               vp.allowSorting(false);
               ret = ObjectPropertyAdder.make(vp, this.getRoot(), "NET.worlds.scape.Action");
            } else if (mode == 1) {
               ret = this.actions.clone();
            } else if (mode == 4) {
               this.actions.removeElement(value);
            } else if (mode == 3) {
               this.actions.addElement((Action)value);
            }
            break;
         case 1:
            if (mode == 0) {
               ret = BooleanPropertyEditor.make(new Property(this, index, "Prevent overlapping actions"), "Overlapping", "One at a time");
            } else if (mode == 1) {
               ret = new Boolean(this.singleTrigger);
            } else if (mode == 2) {
               this.singleTrigger = (Boolean)value;
            }
            break;
         default:
            ret = super.properties(index, offset + 2, mode, value);
      }

      return ret;
   }

   @Override
   public void saveState(Saver s) throws IOException {
      s.saveVersion(1, classCookie);
      super.saveState(s);
      s.saveVector(this.actions);
      s.saveInt(this.nextAction);
      s.saveBoolean(this.singleTrigger);
   }

   @Override
   public void restoreState(Restorer r) throws IOException, TooNewException {
      switch (r.restoreVersion(classCookie)) {
         case 0:
            super.restoreState(r);
            this.actions = r.restoreVector();
            this.nextAction = r.restoreInt();
            break;
         case 1:
            super.restoreState(r);
            this.actions = r.restoreVector();
            this.nextAction = r.restoreInt();
            this.singleTrigger = r.restoreBoolean();
            break;
         default:
            throw new TooNewException();
      }
   }
}