bmvm: Add error text, "safe action"

1 files changed, 14 insertions, 19 deletions

diff --git a/lib/view_model/badge_motive_view_model.dart b/lib/view_model/badge_motive_view_model.dart
index 28acf42..64ba387 100644
--- a/lib/view_model/badge_motive_view_model.dart
+++ b/lib/view_model/badge_motive_view_model.dart
@@ -24,6 +24,7 @@ class BadgeMotiveViewModel extends ChangeNotifier {
   final BadgeMotiveSelection _motivSelect;
   List<BadgeMotive> _motives = [];
   bool _busy = false;
+  String? errorMessage;
 
   BadgeMotiveViewModel({required BadgeMotiveSelection motivSelect})
     : _motivSelect = motivSelect;
@@ -33,41 +34,35 @@ class BadgeMotiveViewModel extends ChangeNotifier {
   BadgeMotive? currentMotive;
 
   Future<void> updateMotives() async {
-    if (_busy) return;
-    _busy = true;
-    notifyListeners();
-
-    try {
+    await safeAction(() async {
       _motives = await _motivSelect.getMotives();
-    } finally {
-      _busy = false;
-      notifyListeners();
-    }
+    });
   }
 
   Future<void> setMotive(BadgeMotive motive) async {
-    if (_busy) return;
-    _busy = true;
-    notifyListeners();
-
-    try {
+    await safeAction(() async {
       logger.t(">Set motive to ${motive.id}");
       await _motivSelect.setCurrentMotive(motive);
       logger.t("<Set motive to ${motive.id}");
       currentMotive = motive;
-    } finally {
-      _busy = false;
-      notifyListeners();
-    }
+    });
   }
 
   Future<void> getCurrentMotive() async {
+    await safeAction(() async {
+      currentMotive = await _motivSelect.getCurrentMotive();
+    });
+  }
+
+  Future<void> safeAction(Future<void> Function() action) async {
     if (_busy) return;
     _busy = true;
     notifyListeners();
 
     try {
-      currentMotive = await _motivSelect.getCurrentMotive();
+      await action();
+    } on Exception catch (e) {
+      errorMessage = "${e.runtimeType}: ${e.toString()}";
     } finally {
       _busy = false;
       notifyListeners();