1 files changed, 108 insertions, 0 deletions
diff --git a/source/ShiftUI/Internal/AsyncMethodResult.cs b/source/ShiftUI/Internal/AsyncMethodResult.cs
new file mode 100644
index 0000000..48c480d
--- /dev/null
+++ b/source/ShiftUI/Internal/AsyncMethodResult.cs
@@ -0,0 +1,108 @@
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+// Copyright (c) 2004 Novell, Inc.
+//
+// Authors:
+//	Jackson Harper ([email protected])
+
+
+using System;
+using System.Threading;
+
+namespace ShiftUI {
+
+	internal class AsyncMethodResult : IAsyncResult {
+
+		private ManualResetEvent handle;
+		private object state;
+		private bool completed;
+		private object return_value;
+		private Exception exception;
+
+		public AsyncMethodResult ()
+		{
+			handle = new ManualResetEvent (false);
+		}
+
+		public virtual WaitHandle AsyncWaitHandle {
+			get {
+				lock (this) {
+					return handle;
+				}
+			}
+		}
+
+		public object AsyncState {
+			get { return state; }
+			set { state = value; }
+		}
+
+		public bool CompletedSynchronously {
+			get { return false; }
+		}
+
+		public bool IsCompleted {
+			get {
+				lock (this) {
+					return completed;
+				}
+			}
+		}
+		
+		public object EndInvoke ()
+		{
+			lock (this) {
+				if (completed) {
+					if (exception == null)
+						return return_value;
+					else
+						throw exception;
+				}
+			}
+			handle.WaitOne ();
+			
+			if (exception != null)
+				throw exception;
+				
+			return return_value;
+		}
+
+		public void Complete (object result)
+		{
+			lock (this) {
+				completed = true;
+				return_value = result;
+				handle.Set ();
+			}
+		}
+		
+		public void CompleteWithException (Exception ex)
+		{
+			lock (this) {
+				completed = true;
+				exception = ex;
+				handle.Set ();
+			}
+		}
+	}
+
+}
+
+