full IDisposable implementation (#34)

* full implementation of IDisposable, not stable, lock and still leaking

* override dispose in popper to handle _content not yet in graphic tree (when never shown), test focusedWidget when disposing

* prevent canceling thread multiple times causing a deadlock

* test parent type when trying to close window

1 files changed, 3 insertions, 8 deletions

diff --git a/src/GraphicObjects/PrivateContainer.cs b/src/GraphicObjects/PrivateContainer.cs
index 89b30753..077f732f 100644
--- a/src/GraphicObjects/PrivateContainer.cs
+++ b/src/GraphicObjects/PrivateContainer.cs
@@ -54,14 +54,9 @@ namespace Crow
 
 			if (child != null) {
 				//check if HoverWidget is removed from Tree
-				if (currentInterface.HoverWidget != null) {
-					if (currentInterface.HoverWidget.IsInside(this))
-						currentInterface.HoverWidget = null;
-				}
 				contentSize = new Size (0, 0);
 				child.LayoutChanged -= OnChildLayoutChanges;
 				child.Dispose ();
-				child.Parent = null;
 				this.RegisterForGraphicUpdate ();
 			}
 
@@ -213,11 +208,11 @@ namespace Crow
 		}
 		#endregion
 
-		public override void Dispose ()
+		protected override void Dispose (bool disposing)
 		{
-			if (child != null)
+			if (disposing && child != null)
 				child.Dispose ();
-			base.Dispose ();
+			base.Dispose (disposing);
 		}
 	}
 }