wait for the film to edited

lib/screens/film_edit/bloc_film_edit.dart

@@ -45,18 +45,18 @@ class FilmEditBloc extends Bloc<FilmEditEvent, FilmEditState> {
           ),
         ) {
     on<FilmEditEvent>(
-      (event, emit) {
+      (event, emit) async {
         switch (event) {
           case final FilmEditNameChangedEvent e:
-            _onNameChanged(e, emit);
+            await _onNameChanged(e, emit);
           case final FilmEditIsoChangedEvent e:
-            _onIsoChanged(e, emit);
+            await _onIsoChanged(e, emit);
           case final FilmEditExpChangedEvent e:
-            _onExpChanged(e, emit);
+            await _onExpChanged(e, emit);
           case FilmEditSaveEvent():
-            _onSave(event, emit);
+            await _onSave(event, emit);
           case FilmEditDeleteEvent():
-            _onDelete(event, emit);
+            await _onDelete(event, emit);
         }
       },
     );
@@ -65,10 +65,8 @@ class FilmEditBloc extends Bloc<FilmEditEvent, FilmEditState> {
   Future<void> _onNameChanged(FilmEditNameChangedEvent event, Emitter emit) async {
     _newFilm = _newFilm.copyWith(name: event.name);
     emit(
-      FilmEditState(
+      state.copyWith(
         name: event.name,
-        isoValue: state.isoValue,
-        exponent: state.exponent,
         canSave: _canSave(event.name, state.exponent),
       ),
     );
@@ -77,10 +75,8 @@ class FilmEditBloc extends Bloc<FilmEditEvent, FilmEditState> {
   Future<void> _onIsoChanged(FilmEditIsoChangedEvent event, Emitter emit) async {
     _newFilm = _newFilm.copyWith(iso: event.iso.value);
     emit(
-      FilmEditState(
+      state.copyWith(
-        name: state.name,
         isoValue: event.iso,
-        exponent: state.exponent,
         canSave: _canSave(state.name, state.exponent),
       ),
     );
@@ -101,8 +97,9 @@ class FilmEditBloc extends Bloc<FilmEditEvent, FilmEditState> {
   }
 
   Future<void> _onSave(FilmEditSaveEvent _, Emitter emit) async {
+    emit(state.copyWith(isLoading: true));
     if (_isEdit) {
-      filmsProvider.updateCustomFilm(
+      await filmsProvider.updateCustomFilm(
         FilmExponential(
           id: _originalFilm.id,
           name: state.name,
@@ -111,7 +108,7 @@ class FilmEditBloc extends Bloc<FilmEditEvent, FilmEditState> {
         ),
       );
     } else {
-      filmsProvider.addCustomFilm(
+      await filmsProvider.addCustomFilm(
         FilmExponential(
           id: const Uuid().v1(),
           name: state.name,
@@ -120,10 +117,13 @@ class FilmEditBloc extends Bloc<FilmEditEvent, FilmEditState> {
         ),
       );
     }
+    emit(state.copyWith(isLoading: false));
   }
 
   Future<void> _onDelete(FilmEditDeleteEvent _, Emitter emit) async {
-    filmsProvider.deleteCustomFilm(_originalFilm);
+    emit(state.copyWith(isLoading: true));
+    await filmsProvider.deleteCustomFilm(_originalFilm);
+    emit(state.copyWith(isLoading: false));
   }
 
   bool _canSave(String name, double? exponent) {

lib/screens/film_edit/screen_film_edit.dart

@@ -25,7 +25,19 @@ class FilmEditScreen extends StatefulWidget {
 class _FilmEditScreenState extends State<FilmEditScreen> {
   @override
   Widget build(BuildContext context) {
-    return SliverScreen(
+    return BlocConsumer<FilmEditBloc, FilmEditState>(
+      listenWhen: (previous, current) => previous.isLoading != current.isLoading,
+      listener: (context, state) {
+        if (state.isLoading) {
+          FocusScope.of(context).unfocus();
+        } else {
+          Navigator.of(context).pop();
+        }
+      },
+      buildWhen: (previous, current) => previous.isLoading != current.isLoading,
+      builder: (context, state) => IgnorePointer(
+        ignoring: state.isLoading,
+        child: SliverScreen(
           title: Text(widget.isEdit ? S.of(context).editFilmTitle : S.of(context).addFilmTitle),
           appBarActions: [
             BlocBuilder<FilmEditBloc, FilmEditState>(
@@ -34,7 +46,6 @@ class _FilmEditScreenState extends State<FilmEditScreen> {
                 onPressed: state.canSave
                     ? () {
                         context.read<FilmEditBloc>().add(const FilmEditSaveEvent());
-                    Navigator.of(context).pop();
                       }
                     : null,
                 icon: const Icon(Icons.save),
@@ -44,7 +55,6 @@ class _FilmEditScreenState extends State<FilmEditScreen> {
               IconButton(
                 onPressed: () {
                   context.read<FilmEditBloc>().add(const FilmEditDeleteEvent());
-              Navigator.of(context).pop();
                 },
                 icon: const Icon(Icons.delete),
               ),
@@ -61,6 +71,8 @@ class _FilmEditScreenState extends State<FilmEditScreen> {
                 child: Card(
                   child: Padding(
                     padding: const EdgeInsets.symmetric(vertical: Dimens.paddingM),
+                    child: Opacity(
+                      opacity: state.isLoading ? Dimens.disabledOpacity : Dimens.enabledOpacity,
                       child: Column(
                         children: [
                           BlocBuilder<FilmEditBloc, FilmEditState>(
@@ -96,8 +108,11 @@ class _FilmEditScreenState extends State<FilmEditScreen> {
                   ),
                 ),
               ),
+            ),
             SliverToBoxAdapter(child: SizedBox(height: MediaQuery.paddingOf(context).bottom)),
           ],
+        ),
+      ),
     );
   }
 }

lib/screens/film_edit/state_film_edit.dart

@@ -5,13 +5,28 @@ class FilmEditState {
   final IsoValue isoValue;
   final double? exponent;
   final bool canSave;
-  final FilmExponential? filmToSave;
+  final bool isLoading;
 
   const FilmEditState({
     required this.name,
     required this.isoValue,
     required this.exponent,
     required this.canSave,
-    this.filmToSave,
+    this.isLoading = false,
   });
+
+  FilmEditState copyWith({
+    String? name,
+    IsoValue? isoValue,
+    double? exponent,
+    bool? canSave,
+    bool? isLoading,
+  }) =>
+      FilmEditState(
+        name: name ?? this.name,
+        isoValue: isoValue ?? this.isoValue,
+        exponent: exponent ?? this.exponent,
+        canSave: canSave ?? this.canSave,
+        isLoading: isLoading ?? this.isLoading,
+      );
 }