pos_turquessa_flutter/lib/views/toping/toping_screen.dart

// ignore_for_file: use_build_context_synchronously

import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import '../../models/models.dart';
import '../../themes/themes.dart';
import '../../viewmodels/viewmodels.dart';
import '../../widgets/app_textfield.dart';
import '../../widgets/pagination_buttons.dart';
import '../../widgets/widgets_components.dart';
import 'toping_form.dart';

class TopingScreen extends StatefulWidget {
  const TopingScreen({Key? key}) : super(key: key);

  @override
  State<TopingScreen> createState() => Formulario();
}

class Formulario extends State<TopingScreen> {
  final _busqueda = TextEditingController(text: '');

  @override
  void initState() {
    super.initState();
    Future(() async {
      await Provider.of<TopingViewModel>(context, listen: false)
          .fetchRegistros();
    });
  }

  go(Toping item) async {
    Provider.of<TopingViewModel>(context, listen: false).selectModelo(item);
    Navigator.push(
      context,
      MaterialPageRoute(
        builder: (context) => const TopingForm(),
      ),
    ).then((value) async {
      await Provider.of<TopingViewModel>(context, listen: false)
          .fetchRegistros();
    });
  }

  @override
  Widget build(BuildContext context) {
    final mvm = Provider.of<TopingViewModel>(context);
    TextStyle estilo = const TextStyle(fontWeight: FontWeight.bold);
    int vuelta = 0;
    List<DataRow> registros = [];
    if (mvm.registros.isNotEmpty) {
      for (Toping item in mvm.registros) {
        var _tipo = vuelta % 2;
        vuelta++;
        registros.add(DataRow(selected: _tipo > 0, cells: [
          DataCell(
            Text(item.clave.toString()),
            onTap: () => go(item),
          ),
          DataCell(
            Text(item.nombre.toString()),
            onTap: () => go(item),
          ),
          DataCell(
            Text(item.descripcion.toString()),
            onTap: () => go(item),
          ),
          DataCell(
              Row(mainAxisAlignment: MainAxisAlignment.spaceBetween, children: [
            PopupMenuButton(
              surfaceTintColor: AppTheme.primary,
              itemBuilder: (context) => [
                PopupMenuItem(
                  child: const Text('Editar'),
                  onTap: () => go(item),
                ),
                PopupMenuItem(
                  child: const Text(
                    'Eliminar',
                  ),
                  onTap: () async {
                    return showDialog(
                      context: context,
                      builder: (context) {
                        return AlertDialog(
                          title: const Text("Eliminar registro"),
                          content: const Text('¿Desea eliminar el registro?'),
                          actions: [
                            Row(children: [
                              Expanded(
                                  child: TextButton(
                                onPressed: () {
                                  Navigator.pop(context);
                                },
                                child: const Text('Cancelar'),
                              )),
                              Expanded(
                                  child: TextButton(
                                onPressed: () async {
                                  await mvm.eliminar(item);
                                  await mvm.fetchRegistros();
                                  if (context.mounted) {
                                    Navigator.pop(context);
                                  }
                                },
                                child: const Text('Continuar'),
                              ))
                            ])
                          ],
                        );
                      },
                    );
                  },
                )
              ],
              icon: const Icon(Icons.more_vert),
              shape: RoundedRectangleBorder(
                  borderRadius: BorderRadius.circular(15)),
            )
          ]))
        ]));
      }
    }

    return Scaffold(
      appBar: AppBar(
        title: const Text('Toping'),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          mvm.selectModelo(Toping());
          Navigator.push(
            context,
            MaterialPageRoute(
              builder: (context) => const TopingForm(),
            ),
          ).then((value) async {
            await Provider.of<TopingViewModel>(context, listen: false)
                .fetchRegistros();
          });
        },
        child: const Icon(Icons.add),
      ),
      body: Column(
        children: [
          Expanded(
            child: ListView(
              padding: const EdgeInsets.fromLTRB(8, 0, 8, 0),
              children: [
                const SizedBox(height: 8),
                tarjeta(Padding(
                    padding: const EdgeInsets.all(10),
                    child: Row(
                      children: [
                        Expanded(
                          flex: 8,
                          child: AppTextField(
                            prefixIcon: const Icon(Icons.search),
                            maxLength: 100,
                            etiqueta: 'Búsqueda por nombre...',
                            controller: _busqueda,
                            hintText: 'Búsqueda por nombre...',
                          ),
                        ),
                        const SizedBox(width: 5),
                        Expanded(
                          flex: 2,
                          child: botonElevated(
                            accion: () async {
                              _busqueda.text = _busqueda.text.trim();
                              await Provider.of<TopingViewModel>(context,
                                      listen: false)
                                  .setIsLoading(true);
                              await Provider.of<TopingViewModel>(context,
                                      listen: false)
                                  .setBusqueda(_busqueda.text);
                              await Provider.of<TopingViewModel>(context,
                                      listen: false)
                                  .fetchRegistros();
                              await Provider.of<TopingViewModel>(context,
                                      listen: false)
                                  .setBusqueda("");
                              await Provider.of<TopingViewModel>(context,
                                      listen: false)
                                  .setIsLoading(false);
                            },
                          ),
                        ),
                      ],
                    ))),
                const SizedBox(height: 8),
                tarjeta(DataTable(
                    sortAscending: true,
                    sortColumnIndex: 1,
                    columns: [
                      DataColumn(label: Text("CLAVE", style: estilo)),
                      DataColumn(label: Text("NOMBRE", style: estilo)),
                      DataColumn(label: Text("DESCRIPCIÓN", style: estilo)),
                      DataColumn(label: Text("", style: estilo)),
                    ],
                    rows: registros)),
                PaginationButtons(
                  currentPage: mvm.pagina,
                  totalPages: mvm.totalPaginas,
                  onPageChanged: (i) => mvm.cambiarPagina(i),
                )
              ],
            ),
          ),
        ],
      ),
    );
  }
}