added stub FilmsProvider

iap/lib/m3_lightmeter_iap.dart

@@ -2,11 +2,12 @@ library m3_lightmeter_iap;
 
 import 'package:flutter/material.dart';
 import 'package:m3_lightmeter_iap/src/providers/equipment_profile_provider.dart';
+import 'package:m3_lightmeter_iap/src/providers/films_provider.dart';
 import 'package:m3_lightmeter_iap/src/providers/iap_products_provider.dart';
 
 export 'src/data/models/iap_product.dart';
 
-export 'src/providers/equipment_profile_provider.dart' hide EquipmentProfilesAspect;
+export 'src/providers/equipment_profile_provider.dart';
 export 'src/providers/iap_products_provider.dart';
 
 class IAPProviders extends StatelessWidget {
@@ -22,9 +23,11 @@ class IAPProviders extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return IAPProductsProvider(
+      child: FilmsProvider(
         child: EquipmentProfileProvider(
           child: child,
         ),
+      ),
     );
   }
 }

iap/lib/src/providers/equipment_profile_provider.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:m3_lightmeter_iap/src/providers/selectable_provider.dart';
 import 'package:m3_lightmeter_resources/m3_lightmeter_resources.dart';
 
 class EquipmentProfileProvider extends StatefulWidget {
@@ -27,7 +28,7 @@ class EquipmentProfileProviderState extends State<EquipmentProfileProvider> {
   @override
   Widget build(BuildContext context) {
     return EquipmentProfiles(
-      profiles: const [_defaultProfile],
+      values: const [_defaultProfile],
       selected: _defaultProfile,
       child: widget.child,
     );
@@ -42,38 +43,19 @@ class EquipmentProfileProviderState extends State<EquipmentProfileProvider> {
   void deleteProfile(EquipmentProfile data) {}
 }
 
-enum EquipmentProfilesAspect { list, selected }
-
-class EquipmentProfiles extends InheritedModel<EquipmentProfilesAspect> {
+class EquipmentProfiles extends SelectableInheritedModel<EquipmentProfile> {
   const EquipmentProfiles({
     super.key,
-    required this.profiles,
-    required this.selected,
+    required super.values,
+    required super.selected,
     required super.child,
   });
 
-  final List<EquipmentProfile> profiles;
-  final EquipmentProfile selected;
-
   static List<EquipmentProfile> of(BuildContext context) {
-    return InheritedModel.inheritFrom<EquipmentProfiles>(
-      context,
-      aspect: EquipmentProfilesAspect.list,
-    )!
-        .profiles;
+    return InheritedModel.inheritFrom<EquipmentProfiles>(context, aspect: SelectableAspect.list)!.values;
   }
 
   static EquipmentProfile selectedOf(BuildContext context) {
-    return InheritedModel.inheritFrom<EquipmentProfiles>(
-      context,
-      aspect: EquipmentProfilesAspect.selected,
-    )!
-        .selected;
+    return InheritedModel.inheritFrom<EquipmentProfiles>(context, aspect: SelectableAspect.selected)!.selected;
   }
-
-  @override
-  bool updateShouldNotify(EquipmentProfiles oldWidget) => false;
-
-  @override
-  bool updateShouldNotifyDependent(EquipmentProfiles oldWidget, Set<EquipmentProfilesAspect> dependencies) => false;
 }

iap/lib/src/providers/films_provider.dart

@@ -0,0 +1,58 @@
+import 'package:flutter/material.dart';
+import 'package:m3_lightmeter_iap/src/providers/selectable_provider.dart';
+import 'package:m3_lightmeter_resources/m3_lightmeter_resources.dart';
+
+class FilmsProvider extends StatefulWidget {
+  final Widget child;
+
+  const FilmsProvider({
+    required this.child,
+    super.key,
+  });
+
+  static FilmsProviderState of(BuildContext context) {
+    return context.findAncestorStateOfType<FilmsProviderState>()!;
+  }
+
+  @override
+  State<FilmsProvider> createState() => FilmsProviderState();
+}
+
+class FilmsProviderState extends State<FilmsProvider> {
+  late Film _selected = Film.values.first;
+
+  @override
+  Widget build(BuildContext context) {
+    return Films(
+      values: Film.values,
+      selected: _selected,
+      child: widget.child,
+    );
+  }
+
+  void setFilm(Film film) {
+    if (_selected != film) {
+      _selected = film;
+      setState(() {});
+    }
+  }
+
+  void saveFilms(List<Film> films) {}
+}
+
+class Films extends SelectableInheritedModel<Film> {
+  const Films({
+    super.key,
+    required super.values,
+    required super.selected,
+    required super.child,
+  });
+
+  static List<Film> of(BuildContext context) {
+    return InheritedModel.inheritFrom<Films>(context, aspect: SelectableAspect.list)!.values;
+  }
+
+  static Film selectedOf(BuildContext context) {
+    return InheritedModel.inheritFrom<Films>(context, aspect: SelectableAspect.selected)!.selected;
+  }
+}

iap/lib/src/providers/selectable_provider.dart

@@ -0,0 +1,45 @@
+import 'package:flutter/material.dart';
+
+enum SelectableAspect { list, selected }
+
+class SelectableInheritedModel<T> extends InheritedModel<SelectableAspect> {
+  const SelectableInheritedModel({
+    super.key,
+    required this.values,
+    required this.selected,
+    required super.child,
+  });
+
+  final List<T> values;
+  final T selected;
+
+  static List<T> of<T>(BuildContext context) {
+    return InheritedModel.inheritFrom<SelectableInheritedModel<T>>(
+      context,
+      aspect: SelectableAspect.list,
+    )!
+        .values;
+  }
+
+  static T selectedOf<T>(BuildContext context) {
+    return InheritedModel.inheritFrom<SelectableInheritedModel>(
+      context,
+      aspect: SelectableAspect.selected,
+    )!
+        .selected;
+  }
+
+  @override
+  bool updateShouldNotify(SelectableInheritedModel oldWidget) => true;
+
+  @override
+  bool updateShouldNotifyDependent(SelectableInheritedModel oldWidget, Set<SelectableAspect> dependencies) {
+    if (dependencies.contains(SelectableAspect.list)) {
+      return true;
+    } else if (dependencies.contains(SelectableAspect.selected)) {
+      return selected != oldWidget.selected;
+    } else {
+      return false;
+    }
+  }
+}