mvp_flutter 0.0.1

A framework that easily implements the MVP(Model-View-Presenter) architecture in Flutter

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:mvp_flutter/mvp_flutter.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      home: const MyHomePage(title: 'Flutter Demo with mvp'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> implements BaseView {
  late final _presenter = CounterPresenter(this);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            const Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '${_presenter.counter}',
              style: Theme.of(context).textTheme.headlineMedium,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _presenter.incrementCounter,
        tooltip: 'Increment',
        child: const Icon(Icons.add),
      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}

class CounterModel {
  const CounterModel(this.counter);
  final int counter;

  CounterModel increase() => CounterModel(counter + 1);
}

class CounterPresenter {
  CounterPresenter(this._view);
  CounterModel get _model => _delegate.model;

  final BaseView _view;
  final _delegate = PresenterDelegate<CounterModel>(const CounterModel(0));

  // public property and method
  int get counter => _model.counter;
  void incrementCounter() => _delegate.refresh(_view, _model.increase());
}