/source/library/Interlace/ReactorUtilities/DeferredThreadingPair.cs

#region Using Directives and Copyright Notice



// Copyright (c) 2007-2010, Computer Consultancy Pty Ltd

// All rights reserved.

// 

// Redistribution and use in source and binary forms, with or without

// modification, are permitted provided that the following conditions are met:

//     * Redistributions of source code must retain the above copyright

//       notice, this list of conditions and the following disclaimer.

//     * Redistributions in binary form must reproduce the above copyright

//       notice, this list of conditions and the following disclaimer in the

//       documentation and/or other materials provided with the distribution.

//     * Neither the name of the Computer Consultancy Pty Ltd nor the

//       names of its contributors may be used to endorse or promote products

//       derived from this software without specific prior written permission.

// 

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 

// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 

// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 

// ARE DISCLAIMED. IN NO EVENT SHALL COMPUTER CONSULTANCY PTY LTD BE LIABLE 

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// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 

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// DAMAGE.



using System;

using System.Collections.Generic;

using System.Text;



using Interlace.Utilities;



#endregion



namespace Interlace.ReactorUtilities

{

    public interface IDeferredThreadingPair

    {

        DeferredObject ReturnDeferred { get; }

        DeferredObject ForThreadDeferred { get; }

    }



    public class DeferredThreadingPair<TDeferred> : IDeferredThreadingPair where TDeferred : DeferredObject, new()

    {

        TDeferred _returnDeferred;

        TDeferred _forThreadDeferred;



        public DeferredThreadingPair(IThreadInvoker invoker)

        {

            _returnDeferred = new TDeferred();

            _forThreadDeferred = new TDeferred();



            _forThreadDeferred.ObjectCompletion(

            delegate(object result)

            {

                invoker.Invoke((SucceedObjectDelegate)_returnDeferred.SucceedObject, result); 

                

                return null;

            },

            delegate(DeferredFailure failure)

            {

                invoker.Invoke((FailDelegate)_returnDeferred.Fail, failure);

                

                return null;

            },

            null);

        }



        delegate void SucceedObjectDelegate(object result);

        delegate void FailDelegate(DeferredFailure failure);



        public TDeferred ReturnDeferred

        { 	 

           get { return _returnDeferred; }

        }



        public TDeferred ForThreadDeferred

        { 	 

           get { return _forThreadDeferred; }

        }



        DeferredObject IDeferredThreadingPair.ReturnDeferred

        {

            get { return _returnDeferred; }

        }



        DeferredObject IDeferredThreadingPair.ForThreadDeferred

        {

            get { return _forThreadDeferred; }

        }

    }

}