one_ui_flutter_app/lib/widget/fx_company_lookup.dart

import 'package:dio/dio.dart';
import 'package:flutter/material.dart';
import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';

import '../model/ac_company_response_model.dart';
import '../provider/dio_provider.dart';
import '../repository/mitra_repository.dart';
import '../screen/md_lab_mitra/mitra_lookup_mou_provider.dart';
import 'fx_data_mitra.dart';
import 'fx_text_field.dart';
import 'provider/selectedCompanyProvider.dart';

// ignore: must_be_immutable
class FxAcCompany extends HookConsumerWidget {
  final String? errorValidation;
  FxAcCompany({
    Key? key,
    this.errorValidation,
  }) : super(key: key);
  CancelToken? cancelToken;

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final errorMessage = useState("");
    final ctrl = useTextEditingController(text: "");

    cancelToken = CancelToken();
    final fc = FocusNode();
    final selectedCompany = ref.read(selectedAcCompanyProvider);
    if (selectedCompany != null) {
      ctrl.text = selectedCompany.mCompanyName;
    }
    ref.listen<AcCompanyModel?>(selectedAcCompanyProvider, ((prev, next) {
      if (next != null) {
        ref
            .read(mitraLookupMouProvider.notifier)
            .lookup(companyID: next.mCompanyID);
      }
    }));

    return RawAutocomplete<AcCompanyModel>(
        textEditingController: ctrl,
        displayStringForOption: (model) => model.mCompanyName,
        focusNode: fc,
        fieldViewBuilder: (context, ctrl, fc, onChange) {
          return FxTextField(
            ctrl: ctrl,
            fc: fc,
            hint: "Company",
            label: "Company",
            errorMessage: errorValidation,
          );
        },
        optionsBuilder: (tv) async {
          try {
            final dio = ref.read(dioProvider);
            await Future.delayed(const Duration(milliseconds: 300));
            final resp = await MitraRepository(dio: dio)
                .lookupCompany(query: ctrl.text, cancelToken: cancelToken);
            return resp;
          } catch (e) {
            errorMessage.value = "Lookup Company Error";
          }
          return [];
        },
        optionsViewBuilder: (context, onSelect, listModel) {
          return Align(
            alignment: Alignment.topLeft,
            child: SizedBox(
              width: 400,
              child: Material(
                child: ListView.builder(
                    itemCount: listModel.length,
                    itemBuilder: (context, idx) {
                      final model = listModel.elementAt(idx);
                      return InkWell(
                          onTap: () {
                            ref.read(selectedAcCompanyProvider.notifier).state =
                                model;
                            onSelect(model);
                          },
                          child: Container(
                            color: (idx % 2 == 1)
                                ? Colors.blue.shade100.withOpacity(0.2)
                                : null,
                            child: Padding(
                              padding: const EdgeInsets.all(8.0),
                              child: Column(
                                crossAxisAlignment: CrossAxisAlignment.start,
                                children: [
                                  FxNormalBlueText(
                                    title: model.mCompanyName,
                                    isBold: true,
                                  ),
                                  const SizedBox(height: 5),
                                  FxNormalBlueText(
                                      title: model.mCompanyAddress),
                                ],
                              ),
                            ),
                          ));
                    }),
              ),
            ),
          );
        });
  }
}