[Mac] Mostly work around tabbing issue

There seems to be an issue with the way the key view loop is calculated
with the NSTableView. This patch fixes it 95%, but I can still cause
it to break if I scroll the table really quickly and then go back to
where I was and attempt to keep tabbing forward/backward.

This workaround overrides a private selector, as suggested by:
https://forums.developer.apple.com/thread/16528#184148

1 files changed, 6 insertions, 0 deletions

diff --git a/Xamarin.PropertyEditing.Mac/Controls/BaseRectangleEditorControl.cs b/Xamarin.PropertyEditing.Mac/Controls/BaseRectangleEditorControl.cs
index 3e6e144..d53d659 100644
--- a/Xamarin.PropertyEditing.Mac/Controls/BaseRectangleEditorControl.cs
+++ b/Xamarin.PropertyEditing.Mac/Controls/BaseRectangleEditorControl.cs
@@ -20,6 +20,9 @@ namespace Xamarin.PropertyEditing.Mac
 		protected NSTextView HeightLabel { get; set; }
 		protected NSTextField HeightEditor { get; set; }
 
+		public override NSView FirstKeyView => XEditor;
+		public override NSView LastKeyView => HeightEditor;
+
 		internal new PropertyViewModel<T> ViewModel {
 			get { return (PropertyViewModel<T>)base.ViewModel; }
 			set { base.ViewModel = value; }
@@ -38,6 +41,7 @@ namespace Xamarin.PropertyEditing.Mac
 
 			YLabel =  new NSTextView {
 				Editable = false,
+				Selectable = false,
 			};
 			YEditor = new NSTextField ();
 			YEditor.BackgroundColor = NSColor.Clear;
@@ -47,6 +51,7 @@ namespace Xamarin.PropertyEditing.Mac
 
 			WidthLabel = new NSTextView {
 				Editable = false,
+				Selectable = false,
 			};
 			WidthEditor = new NSTextField ();
 			WidthEditor.BackgroundColor = NSColor.Clear;
@@ -56,6 +61,7 @@ namespace Xamarin.PropertyEditing.Mac
 
 			HeightLabel =  new NSTextView {
 				Editable = false,
+				Selectable = false,
 			};
 			HeightEditor = new NSTextField ();
 			HeightEditor.BackgroundColor = NSColor.Clear;