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

namespace Observer.TimerObserver
{
	class Subject
	{
		public event EventHandler Changed;

		public Subject()
		{
			Timer timer = new Timer(1000);
			timer.Elapsed += Timer_Elapsed;
			timer.Start();
		}

		private void Timer_Elapsed(object sender, ElapsedEventArgs e)
		{
			if (Changed == null)
				return;

			Changed(this, e);
		}
	}
}