Details Lerngruppe, Archiv, Stub Import

LehrerApp.Desktop/Views/Groups/AddGroupDialog.axaml

@@ -3,13 +3,13 @@
         xmlns:vm="clr-namespace:LehrerApp.Desktop.ViewModels.Groups"
         x:Class="LehrerApp.Desktop.Views.Groups.AddGroupDialog"
         x:DataType="vm:AddGroupDialogViewModel"
-        Title="Neue Lerngruppe"
+        Title="{Binding DialogTitle}"
         Width="420" SizeToContent="Height"
         CanResize="False" WindowStartupLocation="CenterOwner">
 
   <Grid RowDefinitions="*,Auto" Margin="24">
     <StackPanel Grid.Row="0" Spacing="14">
-      <TextBlock Text="Neue Lerngruppe anlegen" FontSize="18" FontWeight="SemiBold"/>
+      <TextBlock Text="{Binding DialogTitle}" FontSize="18" FontWeight="SemiBold"/>
 
       <!-- Typ: Klasse oder Kurs -->
       <StackPanel Spacing="4">
@@ -49,13 +49,28 @@
         </StackPanel>
       </Grid>
 
+      <Grid ColumnDefinitions="*,12,*">
+        <StackPanel Grid.Column="0" Spacing="4">
+          <TextBlock Text="Bewertungssystem" FontSize="12" Opacity="0.7"/>
+          <ComboBox ItemsSource="{Binding GradingOptions}"
+                    SelectedItem="{Binding SelectedGradingName}"
+                    HorizontalAlignment="Stretch"/>
+        </StackPanel>
+        <StackPanel Grid.Column="2" Spacing="4">
+          <TextBlock Text="Wochenstunden (optional)" FontSize="12" Opacity="0.7"/>
+          <NumericUpDown Value="{Binding HoursPerWeek}" Minimum="1" Maximum="40" FormatString="0"
+                         HorizontalAlignment="Stretch"/>
+        </StackPanel>
+      </Grid>
+
       <TextBlock Text="{Binding ValidationMessage}" Foreground="Red" FontSize="12"
                  IsVisible="{Binding ValidationMessage, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"/>
     </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/DeleteGroupDialog.axaml

@@ -0,0 +1,20 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        x:Class="LehrerApp.Desktop.Views.Groups.DeleteGroupDialog"
+        x:CompileBindings="False"
+        Title="Lerngruppe löschen"
+        Width="430" SizeToContent="Height"
+        CanResize="False" WindowStartupLocation="CenterOwner">
+  <Grid RowDefinitions="*,Auto" Margin="24">
+    <StackPanel Grid.Row="0" Spacing="12">
+      <TextBlock Text="Lerngruppe wirklich löschen?" FontSize="18" FontWeight="SemiBold"/>
+      <TextBlock Text="{Binding}" FontSize="15" FontWeight="SemiBold" TextWrapping="Wrap"/>
+      <TextBlock Text="Dabei werden auch Einschreibungen, Klausuren, Noten, Unterrichtsplanung und Mitarbeitseinträge dieser Lerngruppe dauerhaft gelöscht. Wenn du die Gruppe nur ausblenden möchtest, nutze stattdessen das Archiv."
+                 TextWrapping="Wrap" Opacity="0.7"/>
+    </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="Endgültig löschen" HorizontalAlignment="Stretch" Click="OnDelete"/>
+    </Grid>
+  </Grid>
+</Window>

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

@@ -0,0 +1,12 @@
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+
+namespace LehrerApp.Desktop.Views.Groups;
+
+public partial class DeleteGroupDialog : Window
+{
+    public DeleteGroupDialog() => InitializeComponent();
+
+    private void OnDelete(object? sender, RoutedEventArgs e) => Close(true);
+    private void OnCancel(object? sender, RoutedEventArgs e) => Close(false);
+}

LehrerApp.Desktop/Views/Groups/GroupListView.axaml

@@ -13,11 +13,7 @@
       <Grid ColumnDefinitions="*,Auto,Auto">
         <StackPanel Grid.Column="0">
           <TextBlock Text="Lerngruppen" FontSize="22" FontWeight="SemiBold"/>
-          <TextBlock FontSize="12" Opacity="0.5">
-            <Run Text="{Binding Groups.Count}"/>
-            <Run Text=" Gruppen · "/>
-            <Run Text="{Binding SelectedSchoolYear}"/>
-          </TextBlock>
+          <TextBlock Text="{Binding ListSummary}" FontSize="12" Opacity="0.5"/>
         </StackPanel>
         <ComboBox Grid.Column="1" ItemsSource="{Binding SchoolYears}"
                   SelectedItem="{Binding SelectedSchoolYear}"
@@ -35,8 +31,13 @@
               BorderBrush="{DynamicResource SystemControlForegroundBaseLowBrush}"
               BorderThickness="0,0,1,0">
         <DockPanel>
-          <TextBox DockPanel.Dock="Top" Text="{Binding SearchText}"
-                   PlaceholderText="Suchen…" Margin="12,8"/>
+          <StackPanel DockPanel.Dock="Top" Margin="12,8" Spacing="8">
+            <TextBox Text="{Binding SearchText}" PlaceholderText="Suchen…"/>
+            <ToggleSwitch Content="Archiv anzeigen" IsChecked="{Binding ShowArchived}"/>
+          </StackPanel>
+          <TextBlock Text="{Binding EmptyListMessage}" TextWrapping="Wrap"
+                     Margin="16,12" FontSize="12" Opacity="0.45"
+                     IsVisible="{Binding HasNoGroups}"/>
           <ListBox ItemsSource="{Binding Groups}"
                    SelectedItem="{Binding SelectedGroup}">
             <ListBox.ItemTemplate>
@@ -79,12 +80,31 @@
         <StackPanel Margin="28,24" Spacing="20">
 
           <!-- Gruppenname und Kurzinfos -->
-          <StackPanel Spacing="4">
-            <TextBlock Text="{Binding SelectedGroupDisplayName}"
-                       FontSize="24" FontWeight="SemiBold" TextWrapping="Wrap"/>
-            <TextBlock Text="{Binding SelectedGroupSubtitle}"
-                       FontSize="12" Opacity="0.55"/>
-          </StackPanel>
+          <Grid ColumnDefinitions="*,Auto">
+            <StackPanel Grid.Column="0" Spacing="4">
+              <TextBlock Text="{Binding SelectedGroupDisplayName}"
+                         FontSize="24" FontWeight="SemiBold" TextWrapping="Wrap"/>
+              <TextBlock Text="{Binding SelectedGroupSubtitle}"
+                         FontSize="12" Opacity="0.55"/>
+            </StackPanel>
+            <Button Grid.Column="1" Content="⋯  Verwalten" VerticalAlignment="Top"
+                    Margin="16,0,0,0">
+              <Button.Flyout>
+                <MenuFlyout>
+                  <MenuItem Header="Details bearbeiten"
+                            Command="{Binding EditGroupCommand}"/>
+                  <MenuItem Header="{Binding SelectedGroup.ArchiveActionLabel}"
+                            Command="{Binding ToggleArchiveCommand}"/>
+                  <Separator/>
+                  <MenuItem Header="Teilnehmer importieren (bald)" IsEnabled="False"
+                            ToolTip.Tip="Import aus dem Teilnehmerexport der Lernplattform folgt."/>
+                  <Separator/>
+                  <MenuItem Header="Lerngruppe löschen"
+                            Command="{Binding DeleteGroupCommand}"/>
+                </MenuFlyout>
+              </Button.Flyout>
+            </Button>
+          </Grid>
 
           <Separator/>
 

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

@@ -12,7 +12,11 @@ public partial class GroupListView : UserControl
     {
         base.OnDataContextChanged(e);
         if (DataContext is GroupListViewModel vm)
+        {
             vm.OnAddGroup = ShowAddGroupDialog;
+            vm.OnEditGroup = ShowEditGroupDialog;
+            vm.OnConfirmDelete = ShowDeleteGroupDialog;
+        }
     }
 
     private async Task ShowAddGroupDialog()
@@ -23,4 +27,25 @@ public partial class GroupListView : UserControl
         if (owner is not null)
             await dialog.ShowDialog(owner);
     }
+
+    private async Task ShowEditGroupDialog(Guid groupId)
+    {
+        var group = App.Services.GetRequiredService<LehrerApp.Core.Interfaces.IGroupRepository>()
+            .GetById(groupId);
+        if (group is null) return;
+
+        var dialogVm = App.Services.GetRequiredService<AddGroupDialogViewModel>();
+        dialogVm.LoadForEdit(group);
+        var dialog = new AddGroupDialog { DataContext = dialogVm };
+        var owner = TopLevel.GetTopLevel(this) as Window;
+        if (owner is not null)
+            await dialog.ShowDialog<bool>(owner);
+    }
+
+    private async Task<bool> ShowDeleteGroupDialog(GroupListItem group)
+    {
+        var dialog = new DeleteGroupDialog { DataContext = group.DisplayName };
+        var owner = TopLevel.GetTopLevel(this) as Window;
+        return owner is not null && await dialog.ShowDialog<bool>(owner);
+    }
 }