Dashboard und Schnellnavigation fix

LehrerApp.Desktop/ViewModels/Groups/GroupDocumentationViewModels.cs

@@ -25,6 +25,7 @@ public partial class GroupDocumentationTabViewModel : ObservableObject
     private List<StudentOption> _groupStudents = [];
 
     public static readonly StudentOption AllStudentsOption = new(Guid.Empty, "Alle Schüler");
+    public static readonly StudentOption WholeGroupOption = new(Guid.Empty, "Gesamte Lerngruppe");
 
     public ObservableCollection<DocumentationItem> Entries { get; } = [];
     public ObservableCollection<StudentOption> StudentFilterOptions { get; } = [AllStudentsOption];
@@ -62,8 +63,6 @@ public partial class GroupDocumentationTabViewModel : ObservableObject
     private void Load()
     {
         Entries.Clear();
-        if (_groupStudents.Count == 0) return;
-
         var studentNameById = _groupStudents.ToDictionary(s => s.Id, s => s.Name);
         var groupNameCache = new Dictionary<Guid, string>();
         string GroupLabel(Guid id)
@@ -80,6 +79,10 @@ public partial class GroupDocumentationTabViewModel : ObservableObject
 
         var all = relevantStudentIds
             .SelectMany(id => _docs.GetByStudent(id))
+            .Concat(SelectedStudentFilter.Id == Guid.Empty
+                ? _docs.GetAll().Where(d => d.StudentId == Guid.Empty && d.GroupId == _groupId)
+                : [])
+            .DistinctBy(d => d.Id)
             .Where(d => !OnlyThisGroup || d.GroupId == _groupId)
             .OrderByDescending(d => d.IsDraft)
             .ThenByDescending(d => d.Date)
@@ -90,7 +93,10 @@ public partial class GroupDocumentationTabViewModel : ObservableObject
         {
             var isOwnGroup = d.GroupId is null || d.GroupId == _groupId;
             var otherGroupLabel = isOwnGroup ? "" : GroupLabel(d.GroupId!.Value);
-            Entries.Add(new DocumentationItem(d, studentNameById.GetValueOrDefault(d.StudentId, ""),
+            var studentName = d.StudentId == Guid.Empty
+                ? WholeGroupOption.Name
+                : studentNameById.GetValueOrDefault(d.StudentId, "");
+            Entries.Add(new DocumentationItem(d, studentName,
                 isOwnGroup, otherGroupLabel));
         }
     }
@@ -100,7 +106,7 @@ public partial class GroupDocumentationTabViewModel : ObservableObject
     [RelayCommand]
     private async Task AddDocumentation()
     {
-        if (OnEditDocumentation is null || _groupStudents.Count == 0) return;
+        if (OnEditDocumentation is null) return;
         var result = await OnEditDocumentation(_groupId, _groupStudents, null);
         if (result is null) return;
         _docs.Save(result);