themes and some refractoring

lib/src/screens/browse_screen.dart

@@ -4,6 +4,8 @@ import 'package:hirameki_srs/src/themes.dart';
 import 'package:provider/provider.dart';
 import 'package:http/http.dart' as http;
 import '../models/kanji_item.dart';
+import '../models/vocabulary_item.dart';
+import '../models/srs_item.dart';
 import '../services/deck_repository.dart';
 import 'package:hirameki_srs/src/services/vocab_deck_repository.dart';
 import '../services/custom_deck_repository.dart';
@@ -264,9 +266,9 @@ class _BrowseScreenState extends State<BrowseScreen>
 
   Widget _buildVocabListTile(VocabularyItem item) {
     final requiredModes = <String>[
-      VocabQuizMode.vocabToEnglish.toString(),
-      VocabQuizMode.englishToVocab.toString(),
-      VocabQuizMode.audioToEnglish.toString(),
+      QuizMode.vocabToEnglish.toString(),
+      QuizMode.englishToVocab.toString(),
+      QuizMode.audioToEnglish.toString(),
     ];
 
     int minSrsStage = 9;
@@ -422,6 +424,8 @@ class _BrowseScreenState extends State<BrowseScreen>
             srsScores['Reading (kunyomi)'] = srsItem.srsStage;
           }
           break;
+        default:
+          break;
       }
     }
 
@@ -670,7 +674,8 @@ class _BrowseScreenState extends State<BrowseScreen>
     setState(() {
       if (_selectedItems.length == _customDeck.length) {
         _selectedItems.clear();
-      } else {
+      }
+      else {
         _selectedItems = List.from(_customDeck);
       }
     });
@@ -968,15 +973,17 @@ class _VocabDetailsDialogState extends State<_VocabDetailsDialog> {
     for (final entry in widget.vocab.srsItems.entries) {
       final srsItem = entry.value;
       switch (srsItem.quizMode) {
-        case VocabQuizMode.vocabToEnglish:
+        case QuizMode.vocabToEnglish:
           srsScores['JP -> EN'] = srsItem.srsStage;
           break;
-        case VocabQuizMode.englishToVocab:
+        case QuizMode.englishToVocab:
           srsScores['EN -> JP'] = srsItem.srsStage;
           break;
-        case VocabQuizMode.audioToEnglish:
+        case QuizMode.audioToEnglish:
           srsScores['Audio'] = srsItem.srsStage;
           break;
+        default:
+          break;
       }
     }
 
@@ -1052,3 +1059,4 @@ void _showVocabDetailsDialog(BuildContext context, VocabularyItem vocab) {
     },
   );
 }
+