From a335558d4484f1430bf2b3ee9abaf144d2d51051 Mon Sep 17 00:00:00 2001
From: Filip Hracek <filiph@users.noreply.github.com>
Date: Mon, 20 May 2019 12:45:22 -0700
Subject: [PATCH] Migrate from scoped_model to provider (#81)
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This is the minimal possible change. It is meant to be readable as a standalone Pull Request.

This does not touch comments. Additionally, it doesn’t use the niceties of provider, like automatic disposal of the model. Lastly, it doesn’t even rename the project from `scoped_model_counter`. All that will come in a follow-up PR.
---
 scoped_model_counter/lib/main.dart         | 15 ++++++++-------
 scoped_model_counter/pubspec.yaml          |  2 +-
 scoped_model_counter/test/widget_test.dart |  6 +++---
 3 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/scoped_model_counter/lib/main.dart b/scoped_model_counter/lib/main.dart
index 7b7e28ca4..558d44a50 100644
--- a/scoped_model_counter/lib/main.dart
+++ b/scoped_model_counter/lib/main.dart
@@ -1,7 +1,7 @@
 import 'dart:async';
 
 import 'package:flutter/material.dart';
-import 'package:scoped_model/scoped_model.dart';
+import 'package:provider/provider.dart';
 
 void main() {
   // Initialize the model. Can be done outside a widget, like here.
@@ -17,15 +17,15 @@ void main() {
   // Now we're ready to run the app...
   runApp(
     // ... and provide the model to all widgets within.
-    ScopedModel<Counter>(
-      model: counter,
+    ChangeNotifierProvider<Counter>.value(
+      notifier: counter,
       child: MyApp(),
     ),
   );
 }
 
 /// Simplest possible model, with just one field.
-class Counter extends Model {
+class Counter extends ChangeNotifier {
   int value = 0;
 
   void increment() {
@@ -63,8 +63,8 @@ class MyHomePage extends StatelessWidget {
             // and retrieves its model (Counter, in this case).
             // Then it uses that model to build widgets, and will trigger
             // rebuilds if the model is updated.
-            ScopedModelDescendant<Counter>(
-              builder: (context, child, counter) => Text(
+            Consumer<Counter>(
+              builder: (context, counter, child) => Text(
                     '${counter.value}',
                     style: Theme.of(context).textTheme.display1,
                   ),
@@ -78,7 +78,8 @@ class MyHomePage extends StatelessWidget {
         // the current model and doesn't automatically trigger rebuilds.
         // Since this button always looks the same, though, no rebuilds
         // are needed.
-        onPressed: () => ScopedModel.of<Counter>(context).increment(),
+        onPressed: () =>
+            Provider.of<Counter>(context, listen: false).increment(),
         tooltip: 'Increment',
         child: Icon(Icons.add),
       ),
diff --git a/scoped_model_counter/pubspec.yaml b/scoped_model_counter/pubspec.yaml
index d6629b3e7..de6d3a6f7 100644
--- a/scoped_model_counter/pubspec.yaml
+++ b/scoped_model_counter/pubspec.yaml
@@ -11,7 +11,7 @@ dependencies:
   flutter:
     sdk: flutter
 
-  scoped_model: ^1.0.1
+  provider: ^2.0.1
 
   cupertino_icons: ^0.1.2
 
diff --git a/scoped_model_counter/test/widget_test.dart b/scoped_model_counter/test/widget_test.dart
index e6251998d..28e3e150a 100644
--- a/scoped_model_counter/test/widget_test.dart
+++ b/scoped_model_counter/test/widget_test.dart
@@ -1,14 +1,14 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
-import 'package:scoped_model/scoped_model.dart';
+import 'package:provider/provider.dart';
 import 'package:scoped_model_counter/main.dart';
 
 void main() {
   testWidgets('Counter increments smoke test', (WidgetTester tester) async {
     // Build our app, provide it with a model, and trigger a frame.
     await tester.pumpWidget(
-      ScopedModel(
-        model: Counter(),
+      ChangeNotifierProvider(
+        builder: (_) => Counter(),
         child: MyApp(),
       ),
     );