﻿// Copyright 2007-2011 Chris Patterson, Dru Sellers, Travis Smith, et. al.
//  
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use 
// this file except in compliance with the License. You may obtain a copy of the 
// License at 
// 
//     http://www.apache.org/licenses/LICENSE-2.0 
// 
// Unless required by applicable law or agreed to in writing, software distributed 
// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR 
// CONDITIONS OF ANY KIND, either express or implied. See the License for the 
// specific language governing permissions and limitations under the License.
namespace Burrows.Subscriptions
{
    public class DisposableUnsubscribeAction :
		IUnsubscribeAction
	{
		UnsubscribeAction _action;
		volatile bool _disposed;

		public DisposableUnsubscribeAction(UnsubscribeAction action)
		{
			_action = action;
		}

		public void Dispose()
		{
			Dispose(true);
		}

		public void Add(UnsubscribeAction action)
		{
			_action += action;
		}

		protected virtual void Dispose(bool disposing)
		{
			if (_disposed) return;
			if (disposing)
			{
				_action();
			}
			_disposed = true;
		}
	}
}