lib/application_wrapper.dart

@@ -39,6 +39,7 @@ class _ApplicationWrapperState extends State<ApplicationWrapper> {
   late final bool hasLightSensor;
 
   final filmsStorageService = FilmsStorageService();
+  final filmsProviderKey = GlobalKey<FilmsProviderState>();
 
   late final Future<void> _initFuture;
 
@@ -50,7 +51,10 @@ class _ApplicationWrapperState extends State<ApplicationWrapper> {
 
   @override
   Widget build(BuildContext context) {
-    return FutureBuilder(
+    return FilmsProvider(
+      key: filmsProviderKey,
+      filmsStorageService: filmsStorageService,
+      child: FutureBuilder(
         future: _initFuture,
         builder: (context, snapshot) {
           if (snapshot.error != null) {
@@ -69,9 +73,6 @@ class _ApplicationWrapperState extends State<ApplicationWrapper> {
                 remoteConfigService: remoteConfigService,
                 child: EquipmentProfileProvider(
                   storageService: iapStorageService,
-                child: FilmsProvider(
-                  filmsStorageService: filmsStorageService,
-                  onInitialized: _onFilmsProviderInitialized,
                   child: UserPreferencesProvider(
                     hasLightSensor: hasLightSensor,
                     userPreferencesService: userPreferencesService,
@@ -79,12 +80,12 @@ class _ApplicationWrapperState extends State<ApplicationWrapper> {
                   ),
                 ),
               ),
-            ),
             );
           }
 
           return const SizedBox();
         },
+      ),
     );
   }
 
@@ -93,16 +94,13 @@ class _ApplicationWrapperState extends State<ApplicationWrapper> {
       SharedPreferences.getInstance(),
       const LightSensorService(LocalPlatform()).hasSensor(),
       remoteConfigService.activeAndFetchFeatures(),
-      filmsStorageService.init(),
+      filmsStorageService.init().then((_) => filmsProviderKey.currentState?.init()),
     ]).then((value) {
       final sharedPrefs = (value[0] as SharedPreferences?)!;
       iapStorageService = IAPStorageService(sharedPrefs);
       userPreferencesService = UserPreferencesService(sharedPrefs);
       hasLightSensor = value[1] as bool? ?? false;
+      FlutterNativeSplash.remove();
     });
   }
-
-  void _onFilmsProviderInitialized() {
-    FlutterNativeSplash.remove();
-  }
 }

lib/providers/films_provider.dart

@@ -1,4 +1,3 @@
-import 'package:collection/collection.dart';
 import 'package:flutter/material.dart';
 import 'package:lightmeter/utils/context_utils.dart';
 import 'package:m3_lightmeter_iap/m3_lightmeter_iap.dart';
@@ -6,12 +5,10 @@ import 'package:m3_lightmeter_resources/m3_lightmeter_resources.dart';
 
 class FilmsProvider extends StatefulWidget {
   final FilmsStorageService filmsStorageService;
-  final VoidCallback? onInitialized;
   final Widget child;
 
   const FilmsProvider({
     required this.filmsStorageService,
-    this.onInitialized,
     required this.child,
     super.key,
   });
@@ -31,12 +28,6 @@ class FilmsProviderState extends State<FilmsProvider> {
 
   Film get _selectedFilm => customFilms[_selectedId]?.film ?? predefinedFilms[_selectedId]?.film ?? const FilmStub();
 
-  @override
-  void initState() {
-    super.initState();
-    _init();
-  }
-
   @override
   Widget build(BuildContext context) {
     return Films(
@@ -47,13 +38,12 @@ class FilmsProviderState extends State<FilmsProvider> {
     );
   }
 
-  Future<void> _init() async {
+  Future<void> init() async {
     _selectedId = widget.filmsStorageService.selectedFilmId;
     predefinedFilms.addAll(await widget.filmsStorageService.getPredefinedFilms());
     customFilms.addAll(await widget.filmsStorageService.getCustomFilms());
     _discardSelectedIfNotIncluded();
     if (mounted) setState(() {});
-    widget.onInitialized?.call();
   }
 
   /* Both type of films **/
@@ -114,8 +104,8 @@ class FilmsProviderState extends State<FilmsProvider> {
 }
 
 enum _FilmsModelAspect {
-  customFilms,
-  predefinedFilms,
+  customFilmsList,
+  predefinedFilmsList,
   filmsInUse,
   selected,
 }
@@ -135,7 +125,7 @@ class Films extends InheritedModel<_FilmsModelAspect> {
   });
 
   static List<Film> predefinedFilmsOf<T>(BuildContext context) {
-    return InheritedModel.inheritFrom<Films>(context, aspect: _FilmsModelAspect.predefinedFilms)!
+    return InheritedModel.inheritFrom<Films>(context, aspect: _FilmsModelAspect.predefinedFilmsList)!
         .predefinedFilms
         .values
         .map((value) => value.film)
@@ -143,7 +133,7 @@ class Films extends InheritedModel<_FilmsModelAspect> {
   }
 
   static List<FilmExponential> customFilmsOf<T>(BuildContext context) {
-    return InheritedModel.inheritFrom<Films>(context, aspect: _FilmsModelAspect.customFilms)!
+    return InheritedModel.inheritFrom<Films>(context, aspect: _FilmsModelAspect.customFilmsList)!
         .customFilms
         .values
         .map((value) => value.film)
@@ -169,12 +159,7 @@ class Films extends InheritedModel<_FilmsModelAspect> {
 
   @override
   bool updateShouldNotifyDependent(Films oldWidget, Set<_FilmsModelAspect> dependencies) {
-    return (dependencies.contains(_FilmsModelAspect.selected) && oldWidget.selected != selected) ||
-        ((dependencies.contains(_FilmsModelAspect.predefinedFilms) ||
-                dependencies.contains(_FilmsModelAspect.filmsInUse)) &&
-            const DeepCollectionEquality().equals(oldWidget.predefinedFilms, predefinedFilms)) ||
-        ((dependencies.contains(_FilmsModelAspect.customFilms) ||
-                dependencies.contains(_FilmsModelAspect.filmsInUse)) &&
-            const DeepCollectionEquality().equals(oldWidget.customFilms, customFilms));
+    // TODO: reduce unnecessary notifications
+    return true;
   }
 }

pubspec.yaml

@@ -13,7 +13,6 @@ dependencies:
   camera: 0.10.5+2
   camera_android_camerax: 0.6.1+1
   clipboard: 0.1.3
-  collection: any
   dynamic_color: 1.7.0
   exif: 3.1.4
   firebase_analytics: 10.6.2
@@ -32,7 +31,7 @@ dependencies:
   m3_lightmeter_iap:
     git:
       url: "https://github.com/vodemn/m3_lightmeter_iap"
-      ref: v1.1.1
+      ref: v1.1.0
   m3_lightmeter_resources:
     git:
       url: "https://github.com/vodemn/m3_lightmeter_resources"

test/providers/films_provider_test.dart

@@ -50,19 +50,19 @@ void main() {
   }
 
   void expectPredefinedFilmsCount(int count) {
-    expect(find.text(_PredefinedFilmsCount.text(count)), findsOneWidget);
+    expect(find.text('Predefined films count: $count'), findsOneWidget);
   }
 
   void expectCustomFilmsCount(int count) {
-    expect(find.text(_CustomFilmsCount.text(count)), findsOneWidget);
+    expect(find.text('Custom films count: $count'), findsOneWidget);
   }
 
   void expectFilmsInUseCount(int count) {
-    expect(find.text(_FilmsInUseCount.text(count)), findsOneWidget);
+    expect(find.text('Films in use count: $count'), findsOneWidget);
   }
 
   void expectSelectedFilmName(String name) {
-    expect(find.text(_SelectedFilm.text(name)), findsOneWidget);
+    expect(find.text('Selected film: $name'), findsOneWidget);
   }
 
   group(
@@ -234,15 +234,15 @@ class _Application extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return const MaterialApp(
+    return MaterialApp(
       home: Scaffold(
         body: Center(
           child: Column(
             children: [
-              _PredefinedFilmsCount(),
-              _CustomFilmsCount(),
-              _FilmsInUseCount(),
-              _SelectedFilm(),
+              Text("Predefined films count: ${Films.predefinedFilmsOf(context).length}"),
+              Text("Custom films count: ${Films.customFilmsOf(context).length}"),
+              Text("Films in use count: ${Films.inUseOf(context).length}"),
+              Text("Selected film: ${Films.selectedOf(context).name}"),
             ],
           ),
         ),
@@ -251,50 +251,6 @@ class _Application extends StatelessWidget {
   }
 }
 
-class _PredefinedFilmsCount extends StatelessWidget {
-  static String text(int count) => "Predefined films count: $count";
-
-  const _PredefinedFilmsCount();
-
-  @override
-  Widget build(BuildContext context) {
-    return Text(text(Films.predefinedFilmsOf(context).length));
-  }
-}
-
-class _CustomFilmsCount extends StatelessWidget {
-  static String text(int count) => "Custom films count: $count";
-
-  const _CustomFilmsCount();
-
-  @override
-  Widget build(BuildContext context) {
-    return Text(text(Films.customFilmsOf(context).length));
-  }
-}
-
-class _FilmsInUseCount extends StatelessWidget {
-  static String text(int count) => "Films in use count: $count";
-
-  const _FilmsInUseCount();
-
-  @override
-  Widget build(BuildContext context) {
-    return Text(text(Films.inUseOf(context).length));
-  }
-}
-
-class _SelectedFilm extends StatelessWidget {
-  static String text(String name) => "Selected film: $name}";
-
-  const _SelectedFilm();
-
-  @override
-  Widget build(BuildContext context) {
-    return Text(text(Films.selectedOf(context).name));
-  }
-}
-
 const mockPredefinedFilms = [
   FilmExponential(id: '1', name: 'Mock film 2x', iso: 400, exponent: 1.34),
   FilmExponential(id: '2', name: 'Mock film 3x', iso: 800, exponent: 1.34),