cssd/lib/pages/label_result_screen.dart

import 'package:flutter/material.dart';
import 'package:font_awesome_flutter/font_awesome_flutter.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: Scaffold(
        floatingActionButton:
            LabelFloatingButtons(deviceBlockSize: _deviceBlockSize),
        appBar: AppBar(
          titleSpacing: -10,
          title: Text('Home'),
          leading: IconButton(
            icon: Icon(
              Icons.keyboard_arrow_left,
              size: 35,
            ),
            onPressed: () => Navigator.of(context).pop(),
          ),
        ),
        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,
                        ),
                        SizedBox(
                          height: 10,
                        ),
                        Consumer<LabelsProvider>(
                          builder: (context, label, _) {
                            return Container(
                              height: 50,
                              child: ListView(
                                scrollDirection: Axis.horizontal,
                                shrinkWrap: true,
                                children: <Widget>[
                                  InkWell(
                                    onTap: () {
                                      Navigator.of(context).popAndPushNamed(
                                        Routes.labelFilterScreen,
                                      );
                                    },
                                    child: Chip(
                                      backgroundColor: Colors.black,
                                      label: Text(
                                        'Filters',
                                        style: TextStyle(
                                          color: Colors.white,
                                        ),
                                      ),
                                      deleteIcon: Icon(
                                        FontAwesomeIcons.filter,
                                        color: Colors.white,
                                        size: 4 * _deviceBlockSize,
                                      ),
                                      onDeleted: () {
                                        Navigator.of(context).popAndPushNamed(
                                          Routes.labelFilterScreen,
                                        );
                                      },
                                    ),
                                  ),
                                  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(),
                                    )
                                  : ListView.builder(
                                      controller: sc,
                                      itemBuilder: (context, index) =>
                                          LabelItemBox(
                                        deviceBlockSize: _deviceBlockSize,
                                        item: labelResults.items[index],
                                      ),
                                      itemCount: labelResults.items.length,
                                      shrinkWrap: true,
                                    );
                            },
                          ),
                        ),
                      ],
                    ),
                  )
                : ConnectionErrorBox();
          },
        ),
      ),
    );
  }
}