Extract a Listenable base class from Animation and ChangeNotifier (#5889)
Having this base class lets classes like CustomPainter and DataTableSource be more agnostic as to what's generating the repaints.
A
Adam Barth committed
058620007bd9fb633084cf7a5266d3c59df5810d
Parent: 179ea4a
Committed by GitHub <noreply@github.com>
on 9/15/2016, 8:13:51 PM