Merge pull request #96 from jimfoye/patch-1

Detect mouse capture loss during text selection

Author: dgrunwald

ICSharpCode.AvalonEdit/Editing/SelectionMouseHandler.cs

@@ -89,6 +89,22 @@ public SelectionMouseHandler(TextArea textArea)
 			this.textArea = textArea;
 		}
 
+		static SelectionMouseHandler()
+		{
+			EventManager.RegisterClassHandler(typeof(TextArea), Mouse.LostMouseCaptureEvent, new MouseEventHandler(OnLostMouseCapture));
+		}
+
+		private static void OnLostMouseCapture(object sender, MouseEventArgs e)
+		{
+			TextArea textArea = (TextArea)sender;
+			if (Mouse.Captured != textArea)
+			{
+				SelectionMouseHandler handler = textArea.DefaultInputHandler.MouseSelection as SelectionMouseHandler;
+				if (handler != null)
+					handler.mode = SelectionMode.None;
+			}
+		}
+
 		public TextArea TextArea {
 			get { return textArea; }
 		}