refactor: update font picker to accept onChanged callback

lib/font/widgets/font_picker.dart

@@ -5,7 +5,9 @@ import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 
 class FontPicker extends StatelessWidget {
-  const FontPicker({Key? key}) : super(key: key);
+  const FontPicker({Key? key, required this.onChanged}) : super(key: key);
+
+  final ValueChanged<FontData> onChanged;
 
   @override
   Widget build(BuildContext context) {
@@ -46,7 +48,7 @@ class FontPicker extends StatelessWidget {
 
   void _onChanged(BuildContext context, FontData? data) {
     if (data != null) {
-      context.read<TextThemeCubit>().fontFamilyChanged(data.family);
+      onChanged(data);
     }
   }
 }

lib/text_theme/cubits/text_theme_cubit.dart

@@ -1,8 +1,8 @@
+import 'package:appainter/text_theme/text_theme.dart';
 import 'package:bloc/bloc.dart';
 import 'package:copy_with_extension/copy_with_extension.dart';
 import 'package:equatable/equatable.dart';
 import 'package:flutter/material.dart';
-import 'package:appainter/text_theme/text_theme.dart';
 
 part 'text_theme_cubit.g.dart';
 part 'text_theme_state.dart';
@@ -76,7 +76,7 @@ class TextThemeCubit extends Cubit<TextThemeState> {
     overlineTextStyleCubit.styleChanged(theme.overline);
   }
 
-  void fontFamilyChanged(String fontFamily) {
-    emit(state.copyWith(fontFamily: fontFamily));
+  void fontFamilyChanged(FontData data) {
+    emit(state.copyWith(fontFamily: data.family));
   }
 }

lib/text_theme/view/text_theme_editor.dart

@@ -3,6 +3,7 @@ import 'package:appainter/font/font.dart';
 import 'package:appainter/text_theme/text_theme.dart';
 import 'package:appainter/widgets/widgets.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
 
 class TextThemeEditor extends ExpansionPanelItem {
   const TextThemeEditor({Key? key}) : super(key: key);
@@ -14,7 +15,9 @@ class TextThemeEditor extends ExpansionPanelItem {
   Widget build(BuildContext context) {
     return NestedListView(
       children: [
-        const FontPicker(),
+        FontPicker(
+          onChanged: context.read<TextThemeCubit>().fontFamilyChanged,
+        ),
         MyExpansionPanelList(
           color: Theme.of(context).brightness == Brightness.dark
               ? Colors.grey[700]

test/text_theme/font_picker_test.dart

@@ -4,6 +4,7 @@ import 'package:bloc_test/bloc_test.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:google_fonts/google_fonts.dart';
 import 'package:mocktail/mocktail.dart';
 
 import '../mocks.dart';
@@ -17,6 +18,7 @@ void main() {
 
   testWidgets('font picker should update font family', (tester) async {
     const fontFamily = 'ABeeZee';
+    final style = GoogleFonts.aBeeZee();
 
     whenListen(
       cubit,
@@ -29,9 +31,11 @@ void main() {
         create: (context) => FontRepository(),
         child: BlocProvider.value(
           value: cubit,
-          child: const MaterialApp(
+          child: MaterialApp(
             home: Scaffold(
-              body: FontPicker(),
+              body: FontPicker(
+                onChanged: cubit.fontFamilyChanged,
+              ),
             ),
           ),
         ),
@@ -44,6 +48,6 @@ void main() {
     await tester.pumpAndSettle();
 
     expect(find.text(fontFamily), findsOneWidget);
-    verify(() => cubit.fontFamilyChanged(fontFamily));
+    verify(() => cubit.fontFamilyChanged(FontData(fontFamily, style)));
   });
 }

test/text_theme/text_theme_cubit_test.dart

@@ -1,12 +1,13 @@
+import 'package:appainter/text_theme/text_theme.dart';
 import 'package:bloc_test/bloc_test.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
-import 'package:appainter/text_theme/text_theme.dart';
 import 'package:mocktail/mocktail.dart';
 
 import '../mocks.dart';
 
 void main() {
+  const fontFamily = 'fontFamily';
   late TextThemeCubit textThemeCubit;
   late TextTheme textTheme;
 
@@ -166,7 +167,9 @@ void main() {
   blocTest<TextThemeCubit, TextThemeState>(
     'should emit font family',
     build: () => textThemeCubit,
-    act: (cubit) => cubit.fontFamilyChanged('newFont'),
-    expect: () => [const TextThemeState(fontFamily: 'newFont')],
+    act: (cubit) => cubit.fontFamilyChanged(
+      const FontData(fontFamily, TextStyle()),
+    ),
+    expect: () => [const TextThemeState(fontFamily: fontFamily)],
   );
 }