Override CanFocus because the wxWindow level test will check if the NSTextView's parent scrollview can get keyboard focus, and will return no, meaning that wx won't set the focus to the text ctrl.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@63564 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/osx/cocoa/private/textimpl.h

@@ -63,6 +63,8 @@ public:
     virtual bool GetStyle(long position, wxTextAttr& style);
     virtual void SetStyle(long start, long end, const wxTextAttr& style);
     
+    virtual bool CanFocus() const;
+    
     virtual bool HasOwnContextMenu() const { return true; }
     
     virtual void CheckSpelling(bool check);