[Debugger] When the BackgroundStyle is set, only UpdateContents() if Superview is non-null

jstedfast · jstedfast · commit 5244fac82b13 · 2019-10-24T14:19:17.000-04:00
Fixes https://devdiv.visualstudio.com/DevDiv/_workitems/edit/1005195/
diff --git a/main/src/addins/MonoDevelop.Debugger/MonoDevelop.Debugger/ObjectValue/Mac/MacDebuggerObjectCellViewBase.cs b/main/src/addins/MonoDevelop.Debugger/MonoDevelop.Debugger/ObjectValue/Mac/MacDebuggerObjectCellViewBase.cs
@@ -179,7 +179,9 @@ public override NSBackgroundStyle BackgroundStyle {
 			get { return base.BackgroundStyle; }
 			set {
 				base.BackgroundStyle = value;
-				UpdateContents ();
+
+				if (Superview != null)
+					UpdateContents ();
 			}
 		}
 

Original file line number	Diff line number	Diff line change
`@@ -179,7 +179,9 @@ public override NSBackgroundStyle BackgroundStyle {`
`179`	`179`	`get { return base.BackgroundStyle; }`
`180`	`180`	`set {`
`181`	`181`	`base.BackgroundStyle = value;`
`182`		`- UpdateContents ();`
	`182`	`+`
	`183`	`+ if (Superview != null)`
	`184`	`+ UpdateContents ();`
`183`	`185`	`}`
`184`	`186`	`}`
`185`	`187`