modal-add-categoria.dart

import 'package:PhotoReport/blocs/categoria_bloc.dart';
import 'package:PhotoReport/helpers/categoria_helper.dart';
import 'package:PhotoReport/helpers/obra_helper.dart';
import 'package:PhotoReport/validators/categoria_validatores.dart';
import 'package:flutter/material.dart';

class AddCategoriaPage extends StatefulWidget {
  final String action;
  final Obra obra;
  final Categoria categoria;

  AddCategoriaPage(this.action, {this.obra, this.categoria});

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

class _AddCategoriaPageState extends State<AddCategoriaPage>
    with CategoriaValidator {
  final _nomeCtrl = TextEditingController();
  Obra _obra;
  bool _load = false;
  Categoria _editedCategoria;
  final _formKey = GlobalKey<FormState>();

  @override
  void initState() {
    super.initState();

    _obra = widget.obra;

    if (widget.categoria == null) {
      _editedCategoria = Categoria();
      _editedCategoria.obraId = _obra.id;
    } else {
      _editedCategoria = widget.categoria;
      _editedCategoria.obraId = _obra.id;
      _nomeCtrl.text = _editedCategoria.nome;
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(
            widget.action == 'add' ? 'Criar Categoria' : 'Editar Categoria'),
      ),
      body: _load
          ? Column(
              mainAxisAlignment: MainAxisAlignment.center,
              crossAxisAlignment: CrossAxisAlignment.center,
              children: <Widget>[
                Center(
                  child: CircularProgressIndicator(),
                ),
                Text("Carregando...")
              ],
            )
          : Form(
              key: _formKey,
              child: ListView(
                padding: EdgeInsets.all(10.0),
                children: <Widget>[
                  TextFormField(
                    controller: _nomeCtrl,
                    textCapitalization: TextCapitalization.words,
                    decoration:
                        InputDecoration(labelText: "Nome", filled: true),
                    validator: validateNome,
                    onChanged: (value) {
                      setState(() {
                        _editedCategoria.nome = value;
                      });
                    },
                  ),
                  const SizedBox(height: 12.0),
                  SizedBox(
                    height: 44.0,
                    child: RaisedButton(
                      color: Colors.blue,
                      textColor: Colors.white,
                      child: Center(
                        child: Row(
                          mainAxisAlignment: MainAxisAlignment.center,
                          children: <Widget>[
                            Text(
                              widget.action == 'add' ? "CADASTRAR" : "ALTERAR",
                              style: TextStyle(fontSize: 18.0),
                            )
                          ],
                        ),
                      ),
                      onPressed: () {
                        if (widget.action == 'add') {
                          setState(() {
                            categoriaBloc.salvar(_editedCategoria);
                            Navigator.of(context).pop(true);
                          });
                        } else {
                          setState(() {
                            categoriaBloc.alterar(_editedCategoria);
                            Navigator.of(context).pop(true);
                          });
                        }
                      },
                    ),
                  )
                ],
              ),
            ),
    );
  }
}