source: branches/eraser6/pluginsRewrite/Eraser.Plugins/Registrars/PrngRegistrar.cs @ 2440

/* 
 * $Id$
 * Copyright 2008-2011 The Eraser Project
 * Original Author: Joel Low <lowjoel@users.sourceforge.net>
 * Modified By:
 * 
 * This file is part of Eraser.
 * 
 * Eraser 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 3 of the License, or (at your option) any later
 * version.
 * 
 * Eraser 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.
 * 
 * A copy of the GNU General Public License can be found at
 * <http://www.gnu.org/licenses/>.
 */

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

using Eraser.Plugins.ExtensionPoints;

namespace Eraser.Plugins.Registrars
{
    /// <summary>
    /// Class managing all the PRNG algorithms.
    /// </summary>
    public class PrngRegistrar : Registrar<IPrng>
    {
        /// <summary>
        /// Constructor.
        /// </summary>
        internal PrngRegistrar()
        {
        }

        /// <summary>
        /// Gets the PRNG that is active.
        /// </summary>
        /// <remarks>Client code should set the <see cref="ActivePrngGuid"/>
        /// member.</remarks>
        public IPrng ActivePrng
        {
            get
            {
                return this[ActivePrngGuid];
            }
        }

        /// <summary>
        /// Sets the GUID of the active PRNG.
        /// </summary>
        public Guid ActivePrngGuid
        {
            private get;
            set;
        }

        /// <summary>
        /// Allows the EntropyThread to get entropy to the PRNG functions as seeds.
        /// </summary>
        /// <param name="entropy">An array of bytes, being entropy for the PRNG.</param>
        public void AddEntropy(byte[] entropy)
        {
            lock (this)
                foreach (IPrng prng in Host.Instance.Prngs)
                    prng.Reseed(entropy);
        }
    }
}