using System; using System.Threading; namespace Fadd.Commands { /// <summary> /// Used to keep track of all asynchronous commands. /// </summary> internal class AsyncQueueItemResult : IAsyncResult { private bool _isCompleted; private readonly ManualResetEvent _asyncWaitHandle; private readonly object _asyncState; private readonly Command _command; private CommandEventArgs _args; public AsyncQueueItemResult(Command command, CommandEventArgs args, object state) { _asyncWaitHandle = new ManualResetEvent(false); _asyncState = state; _command = command; _args = args; } internal void ToggleCompleted() { _isCompleted = true; _asyncWaitHandle.Set(); } #region IAsyncResult Members ///<summary> ///Gets an indication whether the asynchronous operation has completed. ///</summary> /// ///<returns> ///true if the operation is complete; otherwise, false. ///</returns> ///<filterpriority>2</filterpriority> public bool IsCompleted { get { return _isCompleted; } } ///<summary> ///Gets a <see cref="T:System.Threading.WaitHandle"></see> that is used to wait for an asynchronous operation to complete. ///</summary> /// ///<returns> ///A <see cref="T:System.Threading.WaitHandle"></see> that is used to wait for an asynchronous operation to complete. ///</returns> ///<filterpriority>2</filterpriority> public WaitHandle AsyncWaitHandle { get { return _asyncWaitHandle; } } ///<summary> ///Gets a user-defined object that qualifies or contains information about an asynchronous operation. ///</summary> /// ///<returns> ///A user-defined object that qualifies or contains information about an asynchronous operation. ///</returns> ///<filterpriority>2</filterpriority> public object AsyncState { get { return _asyncState; } } ///<summary> ///Gets an indication of whether the asynchronous operation completed synchronously. ///</summary> /// ///<returns> ///true if the asynchronous operation completed synchronously; otherwise, false. ///</returns> ///<filterpriority>2</filterpriority> public bool CompletedSynchronously { get { return false; } } public Command Command { get { return _command; } } public CommandEventArgs Args { get { return _args; } } #endregion } }
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