package NET.worlds.scape;

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

public class ParallelAction extends Action implements RunningActionCallback {
   protected static final int NONE = 0;
   protected static final int FIRST = 1;
   protected static final int ALL = -1;
   protected Vector actions = new Vector();
   protected int waitState = -1;
   protected int waitingFor = 0;
   protected Object currentRun = null;
   private static Object classCookie = new Object();

   @Override
   public Persister trigger(Event evt, Persister seqID) {
      if (seqID == null) {
         if (this.waitingFor == 0) {
            this.currentRun = new Object();
            if (this.waitState == -1) {
               this.waitingFor = this.actions.size();
               seqID = this;
            } else if (this.waitState == 1) {
               this.waitingFor = 1;
               seqID = this;
            } else {
               this.waitingFor = 0;
               seqID = null;
            }

            RunningActionHandler.trigger(this.actions, this.getWorld(), evt, this, this.currentRun);
         }
      } else if (this.waitingFor == 0) {
         seqID = null;
      }

      return seqID;
   }

   @Override
   public void actionDone(Action a, Event e, Object o) {
      if (this.waitingFor > 0 && o == this.currentRun) {
         this.waitingFor--;
      }
   }

   public void setWaitForAll() {
      this.waitState = -1;
   }

   public void setWaitForFirst() {
      this.waitState = 1;
   }

   public void setWaitForNone() {
      this.waitState = 0;
   }

   public void addComponent(Action act) {
      assert act != null;

      this.actions.addElement(act);
   }

   public void insertComponent(Action act, int index) {
      assert act != null;

      this.actions.insertElementAt(act, index);
   }

   public boolean removeComponent(Action act) {
      assert act != null;

      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) {
               ret = ObjectPropertyAdder.make(new VectorProperty(this, index, "Components"), 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) {
               String[] names = new String[]{"None", "First", "All"};
               int[] values = new int[]{0, 1, -1};
               ret = EnumPropertyEditor.make(new Property(this, index, "Wait for"), names, values);
            } else if (mode == 1) {
               ret = new Integer(this.waitState);
            } else if (mode == 2) {
               this.waitState = (Integer)value;
            }
            break;
         default:
            ret = super.properties(index, offset + 2, mode, value);
      }

      return ret;
   }

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

   @Override
   public void restoreState(Restorer r) throws IOException, TooNewException {
      switch (r.restoreVersion(classCookie)) {
         case 1:
            super.restoreState(r);
            this.actions = r.restoreVector();
            break;
         case 2:
            super.restoreState(r);
            this.actions = r.restoreVector();
            this.waitState = r.restoreInt();
            break;
         default:
            throw new TooNewException();
      }
   }
}