cssd/lib/pages/LabelPages/label_result_screen.dart

import 'package:flutter/material.dart';
import 'package:provider/provider.dart';

import '../../config/routes.dart';
import '../../providers/connectivity.dart';
import '../../providers/labels.dart';
import '../../widgets/Global/internet_error.dart';
import '../../widgets/Global/page_header.dart';
import '../../widgets/LabelScreens/Result/data_box.dart';
import '../../widgets/LabelScreens/Result/filter_chip_box.dart';
import '../../widgets/LabelScreens/Result/floating_buttons.dart';
import '../../widgets/LabelScreens/Result/search_box.dart';

class LabelResultScreen extends StatefulWidget {
  // static const route = '/LabelResultScreen';
  final bool? isAdmin;

  LabelResultScreen({this.isAdmin});

  @override
  _LabelResultScreenState createState() => _LabelResultScreenState();
}

class _LabelResultScreenState extends State<LabelResultScreen> {
  bool _isInit = true;
  ScrollController? sc;
  TextEditingController searchCTRL = new TextEditingController();

  @override
  void initState() {
    sc = new ScrollController();

    super.initState();
  }

  @override
  void didChangeDependencies() {
    if (_isInit) {
      var labelProviderObject =
          Provider.of<LabelsProvider>(context, listen: false);
      labelProviderObject.setLoading();
      labelProviderObject.resetPageNumber();
      labelProviderObject.getLabelResults().then((_) {
        labelProviderObject.resetLoading();
        sc!.addListener(() {
          if (sc!.position.pixels == sc!.position.maxScrollExtent &&
              searchCTRL.text == '') {
            var labelProviderObject =
                Provider.of<LabelsProvider>(context, listen: false);
            labelProviderObject.getLabelResults();
          }
        });
      });
    }
    _isInit = false;
    super.didChangeDependencies();
  }

  @override
  Widget build(BuildContext context) {
    final _media = MediaQuery.of(context);
    final double _devicewidth = _media.size.width;
    final double _deviceBlockSize = _devicewidth / 100;
    return SafeArea(
      child: GestureDetector(
        onTap: () {
          FocusManager.instance.primaryFocus?.unfocus();
        },
        child: Scaffold(
          floatingActionButton: LabelFloatingButtons(
            deviceBlockSize: _deviceBlockSize,
          ),
          appBar: AppBar(
            titleSpacing: -10,
            title: Text(
              'Home',
              style: TextStyle(
                color: Colors.white,
              ),
            ),
            backgroundColor: Colors.black,
            leading: IconButton(
              icon: Icon(
                Icons.keyboard_arrow_left,
                color: Colors.white,
                size: 35,
              ),
              onPressed: () => Navigator.of(context).pushNamed(Routes.homePage),
            ),
          ),
          body: Consumer<ConnectivityProvider>(
            builder: (ct, connection, _) {
              return connection.conStatus != 'offline'
                  ? Padding(
                      padding: EdgeInsets.only(
                          top: 20, right: 20, bottom: 60, left: 20),
                      child: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: <Widget>[
                          PageHeader(
                            deviceBlockSize: _deviceBlockSize,
                            label: 'Labels',
                            route: Routes.labelFilterScreen,
                          ),
                          Consumer<LabelsProvider>(
                            builder: (context, label, _) {
                              return Container(
                                height: 50,
                                child: ListView(
                                  scrollDirection: Axis.horizontal,
                                  shrinkWrap: true,
                                  children: <Widget>[
                                    label.filters.id != ''
                                        ? LabelFilterChip(
                                            deviceBlockSize: _deviceBlockSize,
                                            id: '',
                                            cycleNumber:
                                                label.filters.cycleNumber,
                                            sterilizerId:
                                                label.filters.sterilizerId,
                                            hospital: label.filters.hospital,
                                            label: 'ID',
                                          )
                                        : Container(),
                                    label.filters.cycleNumber != ''
                                        ? LabelFilterChip(
                                            deviceBlockSize: _deviceBlockSize,
                                            id: label.filters.id,
                                            cycleNumber: '',
                                            sterilizerId:
                                                label.filters.sterilizerId,
                                            hospital: label.filters.hospital,
                                            label: 'Cycle Number',
                                          )
                                        : Container(),
                                    label.filters.sterilizerId != ''
                                        ? LabelFilterChip(
                                            deviceBlockSize: _deviceBlockSize,
                                            id: label.filters.id,
                                            cycleNumber:
                                                label.filters.cycleNumber,
                                            sterilizerId: '',
                                            hospital: label.filters.hospital,
                                            label: 'Sterilizer ID',
                                          )
                                        : Container(),
                                    label.filters.hospital != ''
                                        ? LabelFilterChip(
                                            deviceBlockSize: _deviceBlockSize,
                                            id: label.filters.id,
                                            cycleNumber:
                                                label.filters.cycleNumber,
                                            sterilizerId:
                                                label.filters.sterilizerId,
                                            hospital: '',
                                            label: 'Hospital',
                                          )
                                        : Container(),
                                  ],
                                ),
                              );
                            },
                          ),
                          LabelSearchBox(
                              searchCTRL: searchCTRL,
                              deviceBlockSize: _deviceBlockSize),
                          SizedBox(
                            height: 20,
                          ),
                          Expanded(
                            child: Consumer<LabelsProvider>(
                              builder: (context, labelResults, _) {
                                return labelResults.isloading
                                    ? Center(
                                        child: CircularProgressIndicator(
                                          color: Colors.black,
                                        ),
                                      )
                                    : labelResults.items?.length != 0
                                        ? ListView.builder(
                                            controller: sc,
                                            itemBuilder: (context, index) =>
                                                LabelItemBox(
                                              deviceBlockSize: _deviceBlockSize,
                                              item: labelResults.items?[index],
                                            ),
                                            itemCount:
                                                labelResults.items?.length,
                                            shrinkWrap: true,
                                          )
                                        : Container(
                                            child: Center(
                                              child: Text(
                                                  "There is no item to show."),
                                            ),
                                          );
                              },
                            ),
                          ),
                        ],
                      ),
                    )
                  : ConnectionErrorBox();
            },
          ),
        ),
      ),
    );
  }
}