Merge pull request #1 from Iconica-Development/feature/first_release

Basic layout

example/lib/main.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_address_form/flutter_address_form.dart';
 
 void main() {
   runApp(const MyApp());
@@ -24,92 +25,88 @@ class MyApp extends StatelessWidget {
         // is not restarted.
         primarySwatch: Colors.blue,
       ),
-      home: const MyHomePage(title: 'Flutter Demo Home Page'),
+      home: AddressFormExample(),
     );
   }
 }
 
-class MyHomePage extends StatefulWidget {
-  const MyHomePage({super.key, required this.title});
+class AddressFormExample extends StatelessWidget {
+  AddressFormExample({super.key});
 
-  // This widget is the home page of your application. It is stateful, meaning
-  // that it has a State object (defined below) that contains fields that affect
-  // how it looks.
+  // final RegExp zipcodeRegExp = RegExp(r'^[1-9][0-9]{3}\s?[a-zA-Z]{2}$');
 
-  // This class is the configuration for the state. It holds the values (in this
-  // case the title) provided by the parent (in this case the App widget) and
-  // used by the build method of the State. Fields in a Widget subclass are
-  // always marked "final".
-
-  final String title;
-
-  @override
-  State<MyHomePage> createState() => _MyHomePageState();
-}
-
-class _MyHomePageState extends State<MyHomePage> {
-  int _counter = 0;
-
-  void _incrementCounter() {
-    setState(() {
-      // This call to setState tells the Flutter framework that something has
-      // changed in this State, which causes it to rerun the build method below
-      // so that the display can reflect the updated values. If we changed
-      // _counter without calling setState(), then the build method would not be
-      // called again, and so nothing would appear to happen.
-      _counter++;
-    });
+  final _addressController = AddressController(
+    zipCodeValidator: (text) {
+      if (text != null) {
+        if (text.isEmpty) {
+          return 'Can\'t be empty';
         }
+        if (!RegExp(r'^[1-9][0-9]{3}\s?[a-zA-Z]{2}$').hasMatch(text)) {
+          return 'Invalid zipcode';
+        }
+      }
+      return null;
+    },
+    housenumberValidator: (text) {
+      if (text != null) {
+        if (text.isEmpty) {
+          return 'Can\'t be empty';
+        }
+        if (text.length >= 3 || int.tryParse(text) == null) {
+          return 'Invalid number';
+        }
+      }
+      return null;
+    },
+    suffixValidator: (text) {
+      if (text != null) {
+        if (text.isNotEmpty && RegExp(r'/^[a-z]*$/').hasMatch(text)) {
+          return 'Invalid prefix';
+        }
+      }
+      return null;
+    },
+    streetValidator: (text) {
+      if (text != null) {
+        if (text.isEmpty) {
+          return 'Can\'t be empty';
+        }
+      }
+      return null;
+    },
+    cityValidator: (text) {
+      if (text != null) {
+        if (text.isEmpty) {
+          return 'Can\'t be empty';
+        }
+      }
+      return null;
+    },
+    onAutoComplete: (address) {
+      return address;
+    },
+  );
 
   @override
   Widget build(BuildContext context) {
-    // This method is rerun every time setState is called, for instance as done
-    // by the _incrementCounter method above.
-    //
-    // The Flutter framework has been optimized to make rerunning build methods
-    // fast, so that you can just rebuild anything that needs updating rather
-    // than having to individually change instances of widgets.
     return Scaffold(
       appBar: AppBar(
-        // Here we take the value from the MyHomePage object that was created by
-        // the App.build method, and use it to set our appbar title.
-        title: Text(widget.title),
+        title: const Text('Address Form'),
       ),
-      body: Center(
-        // Center is a layout widget. It takes a single child and positions it
-        // in the middle of the parent.
-        child: Column(
-          // Column is also a layout widget. It takes a list of children and
-          // arranges them vertically. By default, it sizes itself to fit its
-          // children horizontally, and tries to be as tall as its parent.
-          //
-          // Invoke "debug painting" (press "p" in the console, choose the
-          // "Toggle Debug Paint" action from the Flutter Inspector in Android
-          // Studio, or the "Toggle Debug Paint" command in Visual Studio Code)
-          // to see the wireframe for each widget.
-          //
-          // Column has various properties to control how it sizes itself and
-          // how it positions its children. Here we use mainAxisAlignment to
-          // center the children vertically; the main axis here is the vertical
-          // axis because Columns are vertical (the cross axis would be
-          // horizontal).
-          mainAxisAlignment: MainAxisAlignment.center,
-          children: <Widget>[
-            const Text(
-              'You have pushed the button this many times:',
-            ),
-            Text(
-              '$_counter',
-              style: Theme.of(context).textTheme.headline4,
+      body: Column(
+        children: [
+          AddressForm(
+            onSubmit: (value) => value,
+            controller: _addressController,
           ),
+          ElevatedButton(
+            onPressed: () {
+              _addressController.validate();
+            },
+            child: const Text('Validate'),
+          )
         ],
       ),
-      ),
-      floatingActionButton: FloatingActionButton(
-        onPressed: _incrementCounter,
-        tooltip: 'Increment',
-        child: const Icon(Icons.add),
-      ), // This trailing comma makes auto-formatting nicer for build methods.
     );
   }
 }

example/pubspec.lock

@@ -55,6 +55,13 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_address_form:
+    dependency: "direct main"
+    description:
+      path: ".."
+      relative: true
+    source: path
+    version: "0.0.1"
   flutter_lints:
     dependency: "direct dev"
     description:
@@ -158,3 +165,4 @@ packages:
     version: "2.1.2"
 sdks:
   dart: ">=2.18.2 <3.0.0"
+  flutter: ">=1.17.0"

example/pubspec.yaml

@@ -32,6 +32,9 @@ dependencies:
   flutter:
     sdk: flutter
 
+  flutter_address_form:
+    path: ../
+
 
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.

lib/flutter_address_form.dart

@@ -1,7 +1,4 @@
 library flutter_address_form;
 
-/// A Calculator.
-class Calculator {
-  /// Returns [value] plus 1.
-  int addOne(int value) => value + 1;
-}
+export 'src/address_form.dart';
+export 'src/models/address_model.dart';

lib/src/address_form.dart

@@ -0,0 +1,214 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+
+import 'package:flutter_address_form/src/models/address_model.dart';
+
+/// A widget that creates a form with different address fields widgets.
+/// Returns a `AddressModel` Object from a `AddressController`.
+class AddressForm extends StatefulWidget {
+  AddressForm({
+    super.key,
+    AddressController? controller,
+    this.zipCodeDecoration = const InputDecoration(label: Text('Zipcode')),
+    this.housenumberDecoration =
+        const InputDecoration(label: Text('Housenumber')),
+    this.suffixDecoration = const InputDecoration(label: Text('Suffix')),
+    this.streetDecoration = const InputDecoration(label: Text('Street')),
+    this.cityDecoration = const InputDecoration(label: Text('City')),
+    required this.onSubmit,
+  }) {
+    _addressController = controller ??
+        AddressController(
+          onAutoComplete: (model) => model,
+          zipCodeValidator: (text) => null,
+          cityValidator: (text) => null,
+          housenumberValidator: (text) => null,
+          streetValidator: (text) => null,
+          suffixValidator: (text) => null,
+        );
+  }
+
+  final InputDecoration zipCodeDecoration;
+  final InputDecoration housenumberDecoration;
+  final InputDecoration suffixDecoration;
+  final InputDecoration streetDecoration;
+  final InputDecoration cityDecoration;
+
+  final ValueChanged<String> onSubmit;
+
+  /// Controls the `AddressModel`
+  late final AddressController _addressController;
+
+  @override
+  State<AddressForm> createState() => _AddressFormState();
+}
+
+class _AddressFormState extends State<AddressForm> {
+  @override
+  Widget build(BuildContext context) {
+    return Form(
+      key: widget._addressController._formKey,
+      child: Column(
+        children: [
+          AddressFormTextField(
+            validator: widget._addressController.zipCodeValidator,
+            controller: widget._addressController._zipcodeController,
+            fieldDecoration: widget.zipCodeDecoration,
+          ),
+          Row(
+            children: [
+              Expanded(
+                child: AddressFormTextField(
+                  validator: widget._addressController.housenumberValidator,
+                  controller: widget._addressController._housenumberController,
+                  fieldDecoration: widget.housenumberDecoration,
+                ),
+              ),
+              Expanded(
+                child: AddressFormTextField(
+                  validator: widget._addressController.suffixValidator,
+                  controller: widget._addressController._suffixController,
+                  fieldDecoration: widget.suffixDecoration,
+                ),
+              ),
+            ],
+          ),
+          AddressFormTextField(
+            validator: widget._addressController.streetValidator,
+            controller: widget._addressController._streetController,
+            fieldDecoration: widget.streetDecoration,
+          ),
+          AddressFormTextField(
+            validator: widget._addressController.cityValidator,
+            controller: widget._addressController._cityController,
+            fieldDecoration: widget.cityDecoration,
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+class AddressFormTextField extends StatelessWidget {
+  const AddressFormTextField({
+    super.key,
+    required this.fieldDecoration,
+    required this.controller,
+    this.validator,
+  });
+
+  final TextEditingController controller;
+  final InputDecoration fieldDecoration;
+  final String? Function(String?)? validator;
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      margin: const EdgeInsets.all(10),
+      child: TextFormField(
+        controller: controller,
+        decoration: fieldDecoration,
+        validator: validator,
+      ),
+    );
+  }
+}
+
+class AddressController extends ChangeNotifier {
+  /// An optional value to initialize the form field to, or null otherwise.
+  final AddressModel? initialValue;
+
+  final GlobalKey<FormState> _formKey = GlobalKey<FormState>();
+
+  /// When the form changes, the function passes the current `AddressModel` as an argument and gives the possibility to manipulate and return a `AddressModel`.
+  final FutureOr<AddressModel> Function(AddressModel)? onAutoComplete;
+
+  AddressController(
+      {this.initialValue,
+      this.onAutoComplete,
+      this.zipCodeValidator,
+      this.housenumberValidator,
+      this.suffixValidator,
+      this.streetValidator,
+      this.cityValidator}) {
+    _model = initialValue ??
+        const AddressModel(
+          zipcode: null,
+          street: null,
+          housenumber: null,
+          suffix: null,
+          city: null,
+        );
+
+    _zipcodeController.addListener(_update);
+    _streetController.addListener(_update);
+    _housenumberController.addListener(_update);
+    _suffixController.addListener(_update);
+    _cityController.addListener(_update);
+  }
+
+  late AddressModel _model;
+
+  final String? Function(String?)? zipCodeValidator;
+  final String? Function(String?)? housenumberValidator;
+  final String? Function(String?)? suffixValidator;
+  final String? Function(String?)? streetValidator;
+  final String? Function(String?)? cityValidator;
+
+  late final _zipcodeController =
+      TextEditingController(text: initialValue?.zipcode);
+  late final _streetController =
+      TextEditingController(text: initialValue?.street);
+  late final _housenumberController =
+      TextEditingController(text: initialValue?.housenumber);
+  late final _suffixController =
+      TextEditingController(text: initialValue?.suffix);
+  late final _cityController = TextEditingController(text: initialValue?.city);
+
+  AddressModel get model => _model;
+
+  bool validate() {
+    assert(_formKey.currentState != null,
+        'Validation can only be used if a FormKey is attached to the current Form');
+    return _formKey.currentState!.validate();
+  }
+
+  void _update() async {
+    AddressModel updatedModel = _model.copyWith(
+        zipcode: _zipcodeController.text,
+        street: _streetController.text,
+        housenumber: _housenumberController.text,
+        suffix: _suffixController.text,
+        city: _cityController.text);
+    _model = await onAutoComplete?.call(updatedModel) ?? updatedModel;
+
+    if (_model.zipcode != updatedModel.zipcode) {
+      _zipcodeController.text = _model.zipcode ?? '';
+    }
+    if (_model.street != updatedModel.street) {
+      _streetController.text = _model.street ?? '';
+    }
+    if (_model.housenumber != updatedModel.housenumber) {
+      _housenumberController.text = _model.housenumber ?? '';
+    }
+    if (_model.suffix != updatedModel.suffix) {
+      _suffixController.text = _model.suffix ?? '';
+    }
+    if (_model.city != updatedModel.city) {
+      _cityController.text = _model.city ?? '';
+    }
+
+    notifyListeners();
+  }
+
+  @override
+  void dispose() {
+    super.dispose();
+    _zipcodeController.dispose();
+    _streetController.dispose();
+    _housenumberController.dispose();
+    _suffixController.dispose();
+    _cityController.dispose();
+  }
+}

lib/src/models/address_model.dart

@@ -0,0 +1,33 @@
+import 'package:flutter/material.dart' show immutable;
+
+@immutable
+class AddressModel {
+  const AddressModel({
+    this.zipcode,
+    this.street,
+    this.housenumber,
+    this.suffix,
+    this.city,
+  });
+
+  final String? zipcode;
+  final String? street;
+  final String? housenumber;
+  final String? suffix;
+  final String? city;
+
+  AddressModel copyWith({
+    String? zipcode,
+    String? street,
+    String? housenumber,
+    String? suffix,
+    String? city,
+  }) =>
+      AddressModel(
+        zipcode: zipcode ?? this.zipcode,
+        street: street ?? this.street,
+        housenumber: housenumber ?? this.housenumber,
+        suffix: suffix ?? this.suffix,
+        city: city ?? this.city,
+      );
+}

pubspec.yaml

@@ -1,7 +1,6 @@
 name: flutter_address_form
 description: A new Flutter package project.
 version: 0.0.1
-homepage:
 
 environment:
   sdk: '>=2.18.2 <3.0.0'

test/flutter_address_form_test.dart

@@ -1,12 +1,77 @@
+import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 
 import 'package:flutter_address_form/flutter_address_form.dart';
 
 void main() {
-  test('adds one to input values', () {
-    final calculator = Calculator();
-    expect(calculator.addOne(2), 3);
-    expect(calculator.addOne(-7), -6);
-    expect(calculator.addOne(0), 1);
+  late RegExp zipcodeRegExp;
+
+  setUp(() {
+    // Testing with Dutch ZipCode
+    zipcodeRegExp = RegExp(r'^[1-9][0-9]{3}\s?[a-zA-Z]{2}$');
+  });
+  testWidgets('Render App with AddressForm Widget', (tester) async {
+    await tester.pumpWidget(
+      MaterialApp(
+        home: Scaffold(
+          appBar: AppBar(),
+          body: AddressForm(
+            onSubmit: (value) => value,
+            controller: AddressController(
+              zipCodeValidator: (text) {
+                if (text != null) {
+                  if (text.isEmpty) {
+                    return 'Can\'t be empty';
+                  }
+                  if (!zipcodeRegExp.hasMatch(text)) {
+                    return 'Invalid zipcode';
+                  }
+                }
+                return null;
+              },
+              housenumberValidator: (text) {
+                if (text != null) {
+                  if (text.isEmpty) {
+                    return 'Can\'t be empty';
+                  }
+                  if (text.length >= 3 || int.tryParse(text) == null) {
+                    return 'Invalid number';
+                  }
+                }
+                return null;
+              },
+              suffixValidator: (text) {
+                if (text != null) {
+                  if (text.isNotEmpty && RegExp(r'/^[a-z]*$/').hasMatch(text)) {
+                    return 'Invalid prefix';
+                  }
+                }
+                return null;
+              },
+              streetValidator: (text) {
+                if (text != null) {
+                  if (text.isEmpty) {
+                    return 'Can\'t be empty';
+                  }
+                }
+                return null;
+              },
+              cityValidator: (text) {
+                if (text != null) {
+                  if (text.isEmpty) {
+                    return 'Can\'t be empty';
+                  }
+                }
+                return null;
+              },
+              onAutoComplete: (address) {
+                return address;
+              },
+            ),
+          ),
+        ),
+      ),
+    );
+    await tester.pump();
   });
 }