FitGridEditorBuilder<T> typedef
FitGridEditorBuilder<T> =
Widget Function(BuildContext context, FitGridEditorSession<T> session)
Builds a bespoke editor for a cell, in place of the default text field.
Use it for a dropdown, a date picker, a stepper — anything whose editing
affordance is not a line of text. commit ends the edit with a value,
cancel abandons it; call one of them or the editor stays open.
Implementation
typedef FitGridEditorBuilder<T> =
Widget Function(BuildContext context, FitGridEditorSession<T> session);