Edit Stammdaten Mitarbeitsessions

LehrerApp.Desktop/Views/Groups/AddSessionDialog.axaml

@@ -3,13 +3,13 @@
         xmlns:vm="clr-namespace:LehrerApp.Desktop.ViewModels.Groups"
         x:Class="LehrerApp.Desktop.Views.Groups.AddSessionDialog"
         x:DataType="vm:AddSessionDialogViewModel"
-        Title="Bewertungszeitpunkt anlegen"
+        Title="{Binding DialogTitle}"
         Width="380" SizeToContent="Height"
         CanResize="False" WindowStartupLocation="CenterOwner">
 
   <Grid RowDefinitions="*,Auto" Margin="24">
     <StackPanel Grid.Row="0" Spacing="14">
-      <TextBlock Text="Neuer Bewertungszeitpunkt" Classes="dialogtitle"/>
+      <TextBlock Text="{Binding DialogTitle}" Classes="dialogtitle"/>
 
       <StackPanel Spacing="4">
         <TextBlock Text="Datum *" FontSize="12" Opacity="0.7"/>
@@ -20,13 +20,14 @@
 
       <StackPanel Spacing="4">
         <TextBlock Text="Kommentar (optional)" FontSize="12" Opacity="0.7"/>
-        <TextBox Text="{Binding Comment}" PlaceholderText="z. B. Stunde 12 – Säure-Base-Reaktion"/>
+        <TextBox Text="{Binding Comment}" PlaceholderText="z. B. Stunde 12 – Säure-Base-Reaktion"
+                 x:Name="CommentBox"/>
       </StackPanel>
     </StackPanel>
 
     <Grid Grid.Row="1" ColumnDefinitions="*,8,*" Margin="0,20,0,0">
       <Button Grid.Column="0" Content="Abbrechen"  HorizontalAlignment="Stretch" Click="OnCancel"/>
-      <Button Grid.Column="2" Content="Anlegen"    HorizontalAlignment="Stretch" Click="OnSave"/>
+      <Button Grid.Column="2" Content="{Binding SaveButtonText}" HorizontalAlignment="Stretch" Click="OnSave"/>
     </Grid>
   </Grid>
 </Window>

LehrerApp.Desktop/Views/Groups/AddSessionDialog.axaml.cs

@@ -11,7 +11,16 @@ public partial class AddSessionDialog : Window
     protected override void OnOpened(EventArgs e)
     {
         base.OnOpened(e);
-        this.FindControl<TextBox>("DateBox")?.Focus();
+        if (DataContext is AddSessionDialogViewModel { IsEditing: true })
+        {
+            var commentBox = this.FindControl<TextBox>("CommentBox");
+            commentBox?.Focus();
+            commentBox?.SelectAll();
+        }
+        else
+        {
+            this.FindControl<TextBox>("DateBox")?.Focus();
+        }
     }
 
     private void OnSave(object? s, RoutedEventArgs e)

LehrerApp.Desktop/Views/Groups/ParticipationTabView.axaml

@@ -53,13 +53,16 @@
                    Text="{Binding SelectedSessionDisplay}"
                    FontSize="13" FontWeight="SemiBold"
                    VerticalAlignment="Center"/>
-        <StackPanel Grid.Column="1" Orientation="Horizontal" Spacing="6"
-                    IsVisible="{Binding HasCompetencyCatalog}">
+        <StackPanel Grid.Column="1" Orientation="Horizontal" Spacing="6">
+          <Button Content="✎ Sitzung bearbeiten" Command="{Binding EditSessionCommand}"
+                  IsVisible="{Binding !IsReadOnly}" FontSize="11" Padding="8,3"/>
           <ToggleButton Content="◇ Kompetenzen"
                         IsChecked="{Binding CompetencyTagsVisible}"
+                        IsVisible="{Binding HasCompetencyCatalog}"
                         FontSize="11" Padding="8,3"/>
           <ToggleButton Content="◈ Schüler-Bewertungen"
                         IsChecked="{Binding StudentCompetencyRatingsVisible}"
+                        IsVisible="{Binding HasCompetencyCatalog}"
                         FontSize="11" Padding="8,3"/>
         </StackPanel>
       </Grid>

LehrerApp.Desktop/Views/Groups/ParticipationTabView.axaml.cs

@@ -23,6 +23,7 @@ public partial class ParticipationTabView : UserControl
         {
             _vm = vm;
             vm.OnAddSession = ShowAddSessionDialog;
+            vm.OnEditSession = ShowEditSessionDialog;
             vm.OnQuickInput = ShowQuickInputDialog;
             vm.OnStatusQuickInput = ShowStatusQuickInputDialog;
             vm.OnComputeGrade = ShowComputeGradeDialog;
@@ -283,6 +284,17 @@ public partial class ParticipationTabView : UserControl
         return ok ? vm.Result : null;
     }
 
+    private async Task<LehrerApp.Core.Models.ParticipationSession?> ShowEditSessionDialog(
+        LehrerApp.Core.Models.ParticipationSession session)
+    {
+        var vm = new AddSessionDialogViewModel(session);
+        var dialog = new AddSessionDialog { DataContext = vm };
+        var owner = TopLevel.GetTopLevel(this) as Window;
+        if (owner is null) return null;
+        var ok = await dialog.ShowDialog<bool>(owner);
+        return ok ? vm.Result : null;
+    }
+
     private async Task ShowQuickInputDialog(ParticipationTabViewModel tabVm)
     {
         if (tabVm.StudentRows.Count == 0) return;