mvc_pattern 7.0.0

To develop apps using a framework following the MVC design pattern separating the app's 'interface' from its 'business logic' and from its 'data source' if any.

example/lib/main.dart

/// Note: This license has also been called the "Simplified BSD License" and the "FreeBSD License".
/// See also the 2-clause BSD License.
///
/// Copyright 2018 www.andrioussolutions.com
///
/// Redistribution and use in source and binary forms, with or without modification,
/// are permitted provided that the following conditions are met:
///
/// 1. Redistributions of source code must retain the above copyright notice,
/// this list of conditions and the following disclaimer.
///
/// 2. Redistributions in binary form must reproduce the above copyright notice,
/// this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
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/// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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/// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
/// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
/// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
/// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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/// To try this example,
/// Uncomment the import statement the line in the function, makeWordPairs(), below.
/// Of course, that means you'll have to modify your pubspec.yaml file.

import 'package:flutter/material.dart';

import 'package:mvc_pattern/mvc_pattern.dart';

void main() => runApp(const MyApp());

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) => MaterialApp(
        title: 'Flutter Demo',
        home: const MyHomePage(),
        debugShowCheckedModeBanner: false,
        theme: ThemeData(
          primarySwatch: Colors.blue,
        ),
      );
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key, this.title = 'Flutter Demo Home Page'})
      : super(key: key);
  // Fields in a StatefulWidget should always be "final".
  final String title;
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends StateMVC<MyHomePage> {
  _MyHomePageState() : super(Controller()) {
    // Acquire a reference to the particular Controller.
    con = controller as Controller;
  }
  late Controller con;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(
              widget.title,
            ),
            Text(
              '${con.counter}',
              style: Theme.of(context).textTheme.headline4,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          setState(con.incrementCounter);
        },
        tooltip: 'Increment',
        child: const Icon(Icons.add),
      ),
    );
  }
}

class Controller extends ControllerMVC {
  factory Controller() => _this ??= Controller._();
  Controller._() {
    _model = _Model();
  }
  static Controller? _this;
  late _Model _model;

  int get counter => _model.counter;
  // The Controller knows how to 'talk to' the Model.
  void incrementCounter() => _model._incrementCounter();
}

class _Model {
  int get counter => _counter;
  int _counter = 0;
  int _incrementCounter() => ++_counter;
}