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using System;
using System.Collections;

namespace Ilog.Language.Util
{
  /**
   * This class is meant to be subclassed by the class of objects
   * identified by an index in an Arraylist collection.
   *
   * @version     Last modified on Sat May 28 16:06:06 2005 by hak
   * @author      <a href="mailto:hak@ilog.fr">Hassan A&iuml;t-Kaci</a>
   * @copyright   &copy; 2000 <a href="http://www.ilog.fr/">ILOG, S.A.</a>
   */
  public class ArrayListIndexed : Indexed
    {
      /**
       * Constructs an ArrayListIndexed object with the specified ArrayList
       * as the reference collection.
       */
      public ArrayListIndexed (ArrayList list)
	{
	  collection = list;
	}

      /**
       * Constructs an ArrayListIndexed object with the specified ArrayList
       * as the reference collection and the specified index.
       */
      public ArrayListIndexed (ArrayList list, int index)
	{
	  collection = list;
	  this.index = index;
	  list.Add(this);
	}

      /**
       * Adds this object to the reference collection and sets its index
       * appropriately.
       */
      public void Add ()
	{
	  index = collection.Count;
	  collection.Add(this);
	}
    }
}