//
// System.Messaging
//
// Authors:
//      Peter Van Isacker (sclytrack@planetinternet.be)
//      Rafael Teixeira   (rafaelteixeirabr@hotmail.com)
//
// (C) 2003 Peter Van Isacker
//
using System;
using System.Collections;

namespace System.Messaging
{
	public class MessageQueueEnumerator : MarshalByRefObject, IEnumerator, IDisposable
	{
		private bool disposed;
		private ArrayList queueList;
		private int currentIndex;

		internal MessageQueueEnumerator (ArrayList queueList)
		{
			this.queueList = queueList;
			this.currentIndex = -1;
		}

		public MessageQueue Current
		{
			get
			{
				if (currentIndex < 0 || currentIndex >= queueList.Count)
					return null;
				return (MessageQueue) queueList[currentIndex];
			}
		}

		object IEnumerator.Current
		{
			get
			{
				if (currentIndex < 0 || currentIndex >= queueList.Count)
					return null;
				return queueList[currentIndex];
			}
		}

		public IntPtr LocatorHandle
		{
			[MonoTODO]
			get
			{
				throw new NotImplementedException ();
			}
		}

		[MonoTODO]
		public void Close ()
		{
		}

		public void Dispose ()
		{
			Dispose (true);
			GC.SuppressFinalize (this);
		}

		protected virtual void Dispose (bool disposing)
		{
			Close ();
			disposed = true;
		}

		public bool MoveNext ()
		{
			return (++currentIndex) < queueList.Count;
		}

		public void Reset ()
		{
			currentIndex = -1;
		}

		~MessageQueueEnumerator ()
		{
			if (!disposed)
				Dispose (false);
		}
	}
}