Kapitel 7 abgeschlossen.

LehrerApp.Desktop/ViewModels/Groups/ParticipationViewModels.cs

@@ -37,6 +37,7 @@ public partial class ParticipationTabViewModel : ObservableObject
     [ObservableProperty] private bool   _hasCompetencyCatalog;
     [ObservableProperty] private bool   _studentCompetencyRatingsVisible;
     [ObservableProperty] private int    _rebuildColumnsSignal;
+    [ObservableProperty] private bool   _isReadOnly;
 
     public string SelectedSessionDisplay => SelectedSession?.Display ?? "";
     public List<string> ActiveCompetencyCodes { get; private set; } = [];
@@ -67,10 +68,11 @@ public partial class ParticipationTabViewModel : ObservableObject
         _competencyDomains = competencyDomains;
     }
 
-    public void Initialize(Guid groupId, string schoolYear)
+    public void Initialize(Guid groupId, string schoolYear, bool isReadOnly = false)
     {
         _groupId    = groupId;
         _schoolYear = schoolYear;
+        IsReadOnly  = isReadOnly;
 
         var group   = _groups.GetById(groupId);
         _subjectId  = group?.SubjectId;
@@ -160,6 +162,7 @@ public partial class ParticipationTabViewModel : ObservableObject
 
     private void SaveRating(Guid sessionId, Guid studentId, string key, int? value)
     {
+        if (IsReadOnly) return;
         var entry = _entries.GetBySessionAndStudent(sessionId, studentId)
                       ?? new ParticipationEntry
                       {
@@ -187,6 +190,7 @@ public partial class ParticipationTabViewModel : ObservableObject
 
     private void SaveHomework(Guid sessionId, Guid studentId, HomeworkStatus? value)
     {
+        if (IsReadOnly) return;
         var entry = _entries.GetBySessionAndStudent(sessionId, studentId)
                     ?? new ParticipationEntry { SessionId = sessionId, StudentId = studentId };
         entry.Homework = value;
@@ -196,6 +200,7 @@ public partial class ParticipationTabViewModel : ObservableObject
 
     private void SaveAttendance(Guid sessionId, Guid studentId, AttendanceStatus? value)
     {
+        if (IsReadOnly) return;
         var entry = _entries.GetBySessionAndStudent(sessionId, studentId)
                     ?? new ParticipationEntry { SessionId = sessionId, StudentId = studentId };
         entry.Attendance = value;