UI design

Modernized the UI design

Author: Nyctophilia58

lib/providers/selection_provider.dart

@@ -14,79 +14,97 @@ class SelectionProvider extends ChangeNotifier {
     _loadSelection();
   }
 
-  void _loadSelection() async {
-    final prefs = await SharedPreferences.getInstance();
-    _selectedIndex = prefs.getInt('selectedIndex') ?? 0;
-
-    final firstStoredValue = prefs.getStringList('firstSelectedValues') ?? [];
-    for (final entry in firstStoredValue) {
-      final split = entry.split(':');
-      if (split.length == 2) {
-        final index = int.tryParse(split[0]);
-        if (index != null) {
-          _firstSelectedValues[index] = split[1];
+  Future<void> _loadSelection() async {
+    try {
+      final prefs = await SharedPreferences.getInstance();
+      _selectedIndex = prefs.getInt('selectedIndex') ?? 0;
+
+      final firstStoredValue = prefs.getStringList('firstSelectedValues') ?? [];
+      for (final entry in firstStoredValue) {
+        final split = entry.split(':');
+        if (split.length == 2) {
+          final idx = int.tryParse(split[0]);
+          if (idx != null) _firstSelectedValues[idx] = split[1];
         }
       }
-    }
 
-    final secondStoredValue = prefs.getStringList('secondSelectedValues') ?? [];
-    for (final entry in secondStoredValue) {
-      final split = entry.split(':');
-      if (split.length == 2) {
-        final index = int.tryParse(split[0]);
-        if (index != null) {
-          _secondSelectedValues[index] = split[1];
+      final secondStoredValue = prefs.getStringList('secondSelectedValues') ?? [];
+      for (final entry in secondStoredValue) {
+        final split = entry.split(':');
+        if (split.length == 2) {
+          final idx = int.tryParse(split[0]);
+          if (idx != null) _secondSelectedValues[idx] = split[1];
         }
       }
+
+      // Ensure keys exist for categories (adjust `5` if you have different count)
+      for (int i = 0; i < 5; i++) {
+        _firstSelectedValues.putIfAbsent(i, () => null);
+        _secondSelectedValues.putIfAbsent(i, () => null);
+      }
+
+      notifyListeners();
+    } catch (e) {
+      debugPrint('Error loading selections: $e');
     }
-    notifyListeners();
   }
 
   Future<void> _saveSelection() async {
-    final prefs = await SharedPreferences.getInstance();
-
-    final List<String> firstStoredMap = _firstSelectedValues.entries
-        .where((e) => e.value != null)
-        .map((e) => '${e.key}:${e.value}')
-        .toList();
-    await prefs.setStringList('firstSelectedValues', firstStoredMap);
-
-    final List<String> secondStoredMap = _secondSelectedValues.entries
-        .where((e) => e.value != null)
-        .map((e) => '${e.key}:${e.value}')
-        .toList();
-    await prefs.setStringList('secondSelectedValues', secondStoredMap);
+    try {
+      final prefs = await SharedPreferences.getInstance();
+
+      final List<String> firstStoredMap = _firstSelectedValues.entries
+          .where((e) => e.value != null)
+          .map((e) => '${e.key}:${e.value}')
+          .toList();
+      await prefs.setStringList('firstSelectedValues', firstStoredMap);
+
+      final List<String> secondStoredMap = _secondSelectedValues.entries
+          .where((e) => e.value != null)
+          .map((e) => '${e.key}:${e.value}')
+          .toList();
+      await prefs.setStringList('secondSelectedValues', secondStoredMap);
+
+      await prefs.setInt('selectedIndex', _selectedIndex);
+    } catch (e) {
+      debugPrint('Error saving selections: $e');
+    }
   }
 
-  void selectIndex(int index) async {
+  void selectIndex(int index) {
+    if (_selectedIndex == index) return;
     _selectedIndex = index;
-    final prefs = await SharedPreferences.getInstance();
-    await prefs.setInt('selectedIndex', index);
     notifyListeners();
   }
 
-  void selectFirstValue(String value) async {
+  Future<void> selectFirstValue(String value) async {
     _firstSelectedValues[_selectedIndex] = value;
     await _saveSelection();
     notifyListeners();
   }
 
-  void selectSecondValue(String value) async {
+  Future<void> selectSecondValue(String value) async {
     _secondSelectedValues[_selectedIndex] = value;
     await _saveSelection();
     notifyListeners();
   }
 
-  void reset() {
-    _selectedIndex = 0;
+  Future<void> resetCurrentCategory() async {
+    _firstSelectedValues[_selectedIndex] = null;
+    _secondSelectedValues[_selectedIndex] = null;
+    await _saveSelection();
+    notifyListeners();
+  }
+
+  Future<void> resetAllCategories() async {
     _firstSelectedValues.clear();
     _secondSelectedValues.clear();
+    for (int i = 0; i < 5; i++) {
+      _firstSelectedValues[i] = null;
+      _secondSelectedValues[i] = null;
+    }
+    _selectedIndex = 0;
+    await _saveSelection();
     notifyListeners();
-
-    SharedPreferences.getInstance().then((prefs) {
-      prefs.remove('selectedIndex');
-      prefs.remove('firstSelectedValues');
-      prefs.remove('secondSelectedValues');
-    });
   }
 }