5 // Atsushi Enomoto <atsushi@ximian.com>
7 // Copyright (C) 2006 Novell, Inc.
11 // Permission is hereby granted, free of charge, to any person obtaining
12 // a copy of this software and associated documentation files (the
13 // "Software"), to deal in the Software without restriction, including
14 // without limitation the rights to use, copy, modify, merge, publish,
15 // distribute, sublicense, and/or sell copies of the Software, and to
16 // permit persons to whom the Software is furnished to do so, subject to
17 // the following conditions:
19 // The above copyright notice and this permission notice shall be
20 // included in all copies or substantial portions of the Software.
22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
30 using System.Threading;
32 namespace System.ComponentModel
34 public sealed class AsyncOperation
36 internal AsyncOperation (SynchronizationContext ctx,
42 ctx.OperationStarted ();
47 if (!done && ctx != null)
48 ctx.OperationCompleted ();
51 SynchronizationContext ctx;
55 public SynchronizationContext SynchronizationContext {
59 public object UserSuppliedState {
63 public void OperationCompleted ()
66 throw new InvalidOperationException ("This task is already completed. Multiple call to OperationCompleted is not allowed.");
68 ctx.OperationCompleted ();
73 public void Post (SendOrPostCallback d, object arg)
76 throw new ArgumentNullException ("d");
79 throw new InvalidOperationException ("This task is already completed. Multiple call to Post is not allowed.");
84 public void PostOperationCompleted (
85 SendOrPostCallback d, object arg)
88 throw new ArgumentNullException ("d");
91 throw new InvalidOperationException ("This task is already completed. Multiple call to PostOperationCompleted is not allowed.");
94 OperationCompleted ();