mobile-app/lib/presentation/screens/control_device/sc_control_device.dart

import 'package:farm_tpf/data/repository/repository.dart';
import 'package:farm_tpf/presentation/custom_widgets/widget_search.dart';
import 'package:farm_tpf/presentation/screens/control_device/widget_device_list.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';

import 'bloc/device_bloc.dart';

class ControlDeviceScreen extends StatefulWidget {
  @override
  _ControlDeviceScreenState createState() => _ControlDeviceScreenState();
}

class _ControlDeviceScreenState extends State<ControlDeviceScreen> {
  BuildContext _blocContext;
  DeviceBloc _deviceBloc = DeviceBloc(repository: Repository());
  @override
  void initState() {
    super.initState();
    _deviceBloc.add(OpenScreen());
  }

  @override
  Widget build(BuildContext context) {
    _blocContext = context;
    return Scaffold(
        appBar: AppBar(
          centerTitle: true,
          title: Text("Điều khiển thiết bị"),
        ),
        body: BlocProvider<DeviceBloc>(
            create: (context) =>
                DeviceBloc(repository: Repository())..add(OpenScreen()),
            child: _buildContent()));
  }

  Widget _buildContent() {
    return Column(
      children: [
        SearchWidget(searchPressed: (value) {
          FocusScope.of(context).requestFocus(FocusNode());
          _deviceBloc.add(OnSearch(query: value));
        }),
        Expanded(
            child: BlocBuilder<DeviceBloc, DeviceState>(
          cubit: _deviceBloc,
          builder: (context, state) {
            if (state is DisplayDevice) {
              if (state.loading) {
                return Container(
                  child: Center(
                    child: CircularProgressIndicator(),
                  ),
                );
              }

              if (state.devices != null) {
                return Container(
                  child: WidgetDeviceList(
                    devices: state.devices,
                    deviceBloc: _deviceBloc,
                  ),
                );
              }
              return Container();
            } else {
              return Container();
            }
          },
        ))
      ],
    );
  }
}