fltkeep-command_handler.dart

mixin CommandHandler<T extends StatefulWidget> on State<T> {
  /// Processes the given [command].
  Future<void> processNoteCommand(ScaffoldState scaffoldState, NoteCommand command) async {
    if (command == null) {
      return;
    }
    await command.execute();
    final msg = command.message;
    if (mounted && msg?.isNotEmpty == true) {
      scaffoldState?.showSnackBar(SnackBar(
        content: Text(msg),
        action: SnackBarAction(
          label: 'Undo',
          onPressed: () => command.revert(),
        ),
      ));
    }
  }
}