state_repository v1.0.0 #

Manage State without create Widgets on the tree, the widgets sign for notificationchanges then the repository notify the Widget do rebuild when data changes, repositories can be shared easily across widgets.

Just create a inherited repository

class CounterRepo extends Repository {
  int _count;

  int get count {
    return _count;
  }

  set count(int newValue) {
    _count = newValue;
    notifyListeners();
  }

  void increment() {
    _count++;
    notifyListeners();
  }
}

And instantiate the repo

class _MyHomePageState extends NotifiableState<MyHomePage> {
 //int _counter = 0;
 @override
 void initState() {
   CounterRepo testRepo = CounterRepo();
   testRepo.count = 2;
   //testRepo.addListener(this); //direct
   //Repository.notifyMeChangesOf<TestRepository>(this); // for default (only one)
   Repository.notifyMeChangesOf<CounterRepo>(this, testRepo); // for especific
   super.initState();
 }

 void _incrementCounter() {
   Repository.of<CounterRepo>(this).increment();
 }

 @override
 Widget build(BuildContext context) {

   return Scaffold(
     appBar: AppBar(

       title: Text(widget.title),
     ),
     body: Center(

       child: Column(

         mainAxisAlignment: MainAxisAlignment.center,
         children: <Widget>[
           Text(
             'You have pushed the button this many times:',
           ),
           Text(
             '${Repository.of<CounterRepo>(this).count}',
             style: Theme.of(context).textTheme.display1,
           ),
         ],
       ),
     ),
     floatingActionButton: FloatingActionButton(
       onPressed: _incrementCounter,
       tooltip: 'Increment',
       child: Icon(Icons.add),
     ),
     bottomNavigationBar: MyButtomBar(),
   ); 
 }
}

You can access the Repo in other widgets and sign to be notified of changes

class _MyButtomBarState extends NotifiableState<MyButtomBar> {
 @override
 void initState() {
   Repository.notifyMeChangesOf<CounterRepo>(this);
   super.initState();
 }

 @override
 Widget build(BuildContext context) {
   return Container(
     padding: EdgeInsets.only(left: 20),
     height: 50,
     alignment: Alignment(-1.0, 1.0),
     decoration: BoxDecoration(color: Colors.yellow),
     child: new Stack(
       children: <Widget>[
         new IconButton(
             icon: Icon(
               Icons.touch_app,
               size: 30,
             ),
             onPressed: () {
               Repository.of<CounterRepo>().increment();
             }),
         Repository.of<CounterRepo>().count != 0
             ? new Positioned(
                 right: 11,
                 top: 11,
                 child: new Container(
                   padding: EdgeInsets.all(2),
                   decoration: new BoxDecoration(
                     color: Colors.red,
                     borderRadius: BorderRadius.circular(6),
                   ),
                   constraints: BoxConstraints(
                     minWidth: 14,
                     minHeight: 14,
                   ),
                   child: Text(
                     '${Repository.of<CounterRepo>().count}',
                     style: TextStyle(
                       color: Colors.white,
                       fontSize: 8,
                     ),
                     textAlign: TextAlign.center,
                   ),
                 ),
               )
             : new Container()
       ],
     ),
   );
 }
}