Created
January 15, 2019 17:13
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| import 'package:flutter/material.dart'; | |
| abstract class Bloc<BlocEvent, BlocState> { | |
| void dispose(); | |
| } | |
| /// Used to give [child] and all it's subsequent children access to [blocs]. | |
| /// To get a reference to 'SomeBloc' from a child use: MultipleBlocProvider.of<SomeBloc>(context) | |
| class MultipleBlocProvider extends StatefulWidget { | |
| MultipleBlocProvider({Key key, @required this.child, @required this.blocs}) | |
| : super(key: key); | |
| final Widget child; | |
| final List<Bloc> blocs; | |
| _MultipleBlocProviderState createState() => _MultipleBlocProviderState(); | |
| static T of<T extends Bloc>(BuildContext context) { | |
| _InheritedBlocProvider provider = context | |
| .ancestorInheritedElementForWidgetOfExactType(_InheritedBlocProvider) | |
| .widget; | |
| return provider.blocs.lastWhere((bloc) => bloc is T); | |
| } | |
| } | |
| class _MultipleBlocProviderState extends State<MultipleBlocProvider> { | |
| @override | |
| Widget build(BuildContext context) => _InheritedBlocProvider( | |
| blocs: widget.blocs, | |
| child: widget.child, | |
| ); | |
| @override | |
| void dispose() { | |
| widget.blocs.map((bloc) => bloc.dispose()); | |
| super.dispose(); | |
| } | |
| } | |
| class _InheritedBlocProvider extends InheritedWidget { | |
| _InheritedBlocProvider({Key key, this.child, this.blocs}) | |
| : super(key: key, child: child); | |
| final Widget child; | |
| final List<Bloc> blocs; | |
| @override | |
| bool updateShouldNotify(_InheritedBlocProvider oldWidget) => false; | |
| } |
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Very good idea!! Can I use this code in my project?