//============================================================================
//ZedGraph Class Library - A Flexible Line Graph/Bar Graph Library in C#
//Copyright © 2007  Pavel Mazac & John Champion
//
//This library is free software; you can redistribute it and/or
//modify it under the terms of the GNU Lesser General Public
//License as published by the Free Software Foundation; either
//version 2.1 of the License, or (at your option) any later version.
//
//This library 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
//Lesser General Public License for more details.
//
//You should have received a copy of the GNU Lesser General Public
//License along with this library; if not, write to the Free Software
//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//=============================================================================

using System;
using System.IO;
using System.Web.Caching;
using System.Text;

namespace ZedGraph.Web
{
	/// <summary>
	/// The ZedGraphWeb class which remove temporary file 
	/// associated with this object. File is deleted when 
	/// this object is removed from cache.
	/// </summary>
	public class TempFileDestructor
	{
		string fileName;

		/// <summary>
		/// Constructor
		/// </summary>
		/// <param name="fileName"></param>
		public TempFileDestructor(string fileName) 
		{
			this.fileName = fileName;
		}

		/// <summary>
		/// Called when object removed from cache
		/// </summary>
		/// <param name="k"></param>
		/// <param name="v"></param>
		/// <param name="r"></param>
		public void RemovedCallback(String k, Object v, CacheItemRemovedReason r) 
		{
			try 
			{
				File.Delete(fileName);
			}
			catch { /* nothing todo... */ }
		}
	}
}