using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;

namespace ResourceViewer
{
    /// <summary>
    /// Class to allow any action to be delayed Elapsed seconds
    /// Currently used with the filter list textbox typing
    /// </summary>
    public class Moderator
    {
        private DateTime _lastUpdate;
        private bool _isAlive;

        public void Trigger()
        {
            _lastUpdate = DateTime.Now;
            if (!_isAlive)
            {
                _isAlive = true;
                ThreadPool.QueueUserWorkItem(WaitAndTrigger);
            }
        }

        private void WaitAndTrigger(object ignored)
        {
            while (DateTime.Now < _lastUpdate.AddSeconds(ElapsedTime))
            {
                Thread.Sleep(500);
            }
            _isAlive = false;
            var done = Done;
            if (done != null)
            {
                done(this, EventArgs.Empty);
            }
        }

        public event EventHandler Done;
        public int ElapsedTime = 2;
    }


}