bloc-3.dart

BlocBuilder<HouseMessagesCubit, HouseMessagesState>(
  builder: (context, state) {
    if (state is HouseMessagesLoading) {
      return const Center(
        child: CircularProgressIndicator(),
      );
    } else if (state is HouseMessagesLoaded) {
      if (state.list.isEmpty) {
        return const Center(
          child: Text(
            AppString.houseNoMessages,
          ),
        );
      } else {
        return Scrollbar(
          controller: _messagesScrollController,
          child: ListView.builder(
            controller: _messagesScrollController,
            itemCount: state.list.length,
            shrinkWrap: true,
            itemBuilder: (context, index) =>
              HouseMessageListItem(
                message: state.list[index],
              ),
            ),
          );
        }
      } else if (state is HouseMessagesLoadFailed) {
        return Center(
          child: Text(
            state.error.toString(),
          ),
        );
      }
    return const Center(
      child: CircularProgressIndicator(),
    );
  },
);