content: import 'package:cine_reel/bloc/bloc_provider.dart';
  import 'package:cine_reel/bloc/genres_bloc.dart';
  import 'package:cine_reel/ui/common_widgets/empty_result_widget.dart';
  import 'package:cine_reel/ui/genres/genres_state.dart';
  import 'package:cine_reel/ui/genres/genres_widget.dart';
  import 'package:flutter/widgets.dart';
  
  class GenresScreen extends StatelessWidget {
    @override
    Widget build(BuildContext context) {
      final genresBloc = BlocProvider.of<GenresBloc>(context);
      return StreamBuilder(
        key: Key('streamBuilder'),
        stream: genresBloc.stream,
        builder: (context, snapshot) {
          final data = snapshot.data;
          return Column(
            children: <Widget>[
              Expanded(
                child: Stack(
                  key: Key('content'),
                  children: <Widget>[
                    EmptyWidget(visible: data is GenresEmpty),
                    GenresWidget(
                      visible: data is GenresPopulated,
                      genres: data is GenresPopulated ? data.genres : [],
                    )
                  ],
                ),
              )
            ],
          );
        },
      );
    }
  }
  