// GoodTimer.cs
// Copyright (C) 2002 Matt Zyzik (www.FileScope.com)
// 
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

using System.Timers;

namespace FileScope
{
    /// <summary>
    /// This timer just assures that multiple delegates aren't passed to the Elapsed event.
    /// </summary>
    public class GoodTimer : Timer
    {
        public bool hasEvent;

        public GoodTimer()
        {
            hasEvent = false;
        }

        public GoodTimer(double interval) : base(interval)
        {
            hasEvent = false;
        }

        public void AddEvent(ElapsedEventHandler eeh)
        {
            if (!hasEvent)
            {
                Elapsed += eeh;
                hasEvent = true;
            }
        }

        public void RemoveEvent(ElapsedEventHandler eeh)
        {
            if (hasEvent)
            {
                Elapsed -= eeh;
                hasEvent = false;
            }
        }
    }
}