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Andrious/Controller.dart

Created November 1, 2018 18:59
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  1. Andrious created this gist Nov 1, 2018.
    25 changes: 25 additions & 0 deletions Controller.dart
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    import 'package:mvc_pattern/mvc_pattern.dart';

    /// Notice 'the rest of the app' has no idea this Dart file even exists.
    import 'Model.dart';

    class Controller extends ControllerMVC {
    Controller() {
    con = this;
    }
    static Controller con;

    @override
    initState() {
    /// Demonstrating how the 'initState()' is easily implemented.
    _counter = Model.counter;
    }

    int get displayThis => _counter;
    int _counter;

    void whatever() {
    /// The Controller knows how to 'talk to' the Model. It knows the name, but Model does the work.
    _counter = Model.incrementCounter();
    }
    }
    8 changes: 8 additions & 0 deletions Model.dart
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    class Model {
    static int get counter => _counter;
    static int _counter = 0;

    static int incrementCounter() {
    return ++_counter;
    }
    }
    55 changes: 55 additions & 0 deletions MyHomePage.dart
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    import 'package:flutter/material.dart';

    import 'package:mvc_pattern/mvc_pattern.dart';

    /// Dependency Injection of 'the Controller' in the design pattern.
    import 'Controller.dart';

    class MyHomePage extends StatefulWidget {
    MyHomePage({Key key}) : super(key: key);

    // Fields in a Widget subclass are always marked "final".
    static final String title = 'Flutter Demo Home Page';

    @override
    _MyHomePageState createState() => new _MyHomePageState();
    }

    class _MyHomePageState extends StateMVC {
    _MyHomePageState():super(Controller()){
    _con = Controller.con;
    }
    Controller _con;

    @override
    @protected
    Widget build(BuildContext context) {
    return Scaffold(
    appBar: AppBar(
    title: Text(MyHomePage.title),
    ),
    body: Center(
    child: Column(
    mainAxisAlignment: MainAxisAlignment.center,
    children: <Widget>[
    Text(
    MyHomePage.title,
    ),
    Text(
    '${_con.displayThis}',
    style: Theme.of(context).textTheme.display1,
    ),
    ],
    ),
    ),
    floatingActionButton: FloatingActionButton(
    onPressed: () {
    setState(_con.whatever);
    },
    tooltip: 'Increment',
    child: Icon(Icons.add),
    ),
    );
    }
    }

    21 changes: 21 additions & 0 deletions main.dart
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    import 'package:flutter/material.dart';

    import 'MyHomePage.dart';

    /// Dependency Injection of 'the Controller' in the design pattern.
    import 'Controller.dart';

    void main() => runApp(MVCCounterApp());

    class MVCCounterApp extends StatelessWidget {
    @override
    Widget build(BuildContext context) {
    return MaterialApp(
    title: 'Flutter Demo',
    theme: ThemeData(
    primarySwatch: Colors.blue,
    ),
    home: MyHomePage(),
    );
    }
    }