feat: Feldeditor für Autofelder im TemplateDesigner

LehrerApp.TemplateDesigner.Tests/ProjectLifecycleTests.cs

@@ -80,6 +80,40 @@ public sealed class ProjectLifecycleTests
         Assert.True(viewModel.HasNoSelectedPlaceholder);
     }
 
+    [Theory]
+    [InlineData("Anwesenheitskalender", "Student.AttendanceCalendar", "DRAWBOX", "90")]
+    [InlineData("Fehltage nach Datum", "Student.AbsenceDays", "FLOWDRAWBOX", "140")]
+    public void Sonderinhalt_AusKatalog_BereitetPlatzhalterUndElementVor(
+        string displayName, string placeholderName, string elementType, string height)
+    {
+        var viewModel = new DesignerViewModel();
+        viewModel.Placeholders.Clear();
+        viewModel.SelectedSpecialContent = viewModel.SpecialContents.Single(x => x.DisplayName == displayName);
+
+        viewModel.PrepareSelectedSpecialContent();
+
+        var placeholder = Assert.Single(viewModel.Placeholders);
+        Assert.Equal(placeholderName, placeholder.Name);
+        Assert.Equal(LehrerApp.Templating.PlaceholderType.Drawing, placeholder.Type);
+        Assert.Same(placeholder, viewModel.SelectedPlaceholder);
+        Assert.Equal(elementType, viewModel.NewElementType);
+        Assert.Equal("$" + placeholderName, viewModel.NewContent);
+        Assert.Equal("170", viewModel.NewWidth);
+        Assert.Equal(height, viewModel.NewHeight);
+    }
+
+    [Fact]
+    public void Sonderinhalt_WirdNichtDoppeltDeklariert()
+    {
+        var viewModel = new DesignerViewModel();
+        viewModel.SelectedSpecialContent = viewModel.SpecialContents.Single(x =>
+            x.PlaceholderName == "Student.AttendanceCalendar");
+
+        viewModel.PrepareSelectedSpecialContent();
+
+        Assert.Single(viewModel.Placeholders, x => x.Name == "Student.AttendanceCalendar");
+    }
+
     [Fact]
     public void DoppeltePlatzhalternamen_WerdenVerstaendlichAbgelehnt()
     {

LehrerApp.TemplateDesigner/DesignerViewModel.cs

@@ -48,12 +48,14 @@ public partial class DesignerViewModel : ObservableObject
     [ObservableProperty] private string _overlayPageUnit = "mm";
     [ObservableProperty] private string _selectedPageTemplate = "first";
     [ObservableProperty] private DesignerPreviewPage? _selectedPreviewPage;
+    [ObservableProperty] private SpecialContentItem? _selectedSpecialContent;
 
     public IReadOnlyList<string> Units { get; } = ["mm", "cm", "pt", "in"];
     public IReadOnlyList<PlaceholderType> PlaceholderTypes { get; } = Enum.GetValues<PlaceholderType>();
     public IReadOnlyList<string> ElementTypes { get; } =
         ["TEXT", "TEXTBOX", "FLOWBOX", "DRAWBOX", "FLOWDRAWBOX", "IMG", "TABLE", "CHART"];
     public IReadOnlyList<string> ElementScopes { get; } = ["Seitenvorlage (fest)", "Content-Flow"];
+    public IReadOnlyList<SpecialContentItem> SpecialContents { get; } = SpecialContentCatalog.Items;
     public ObservableCollection<DesignerPlaceholder> Placeholders { get; } =
     [
         new("Datum", PlaceholderType.Date, true, DateTime.Today.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture)),
@@ -78,7 +80,11 @@ public partial class DesignerViewModel : ObservableObject
     public bool HasSelectedPlaceholder => SelectedPlaceholder is not null;
     public bool HasNoSelectedPlaceholder => SelectedPlaceholder is null;
 
-    public DesignerViewModel() => SelectedPlaceholder = Placeholders.FirstOrDefault();
+    public DesignerViewModel()
+    {
+        SelectedPlaceholder = Placeholders.FirstOrDefault();
+        SelectedSpecialContent = SpecialContents.FirstOrDefault();
+    }
 
     partial void OnSelectedPlaceholderChanged(DesignerPlaceholder? value)
     {
@@ -198,6 +204,32 @@ public partial class DesignerViewModel : ObservableObject
         return placeholder;
     }
 
+    /// <summary>Übernimmt einen lesbar benannten LehrerApp-Sonderinhalt in das normale
+    /// Elementformular und legt seine Drawing-Deklaration an, falls sie noch fehlt.</summary>
+    public void PrepareSelectedSpecialContent()
+    {
+        if (SelectedSpecialContent is not { } special)
+            throw new InvalidOperationException("Bitte zuerst einen Sonderinhalt auswählen.");
+        var placeholder = Placeholders.FirstOrDefault(p => p.Name == special.PlaceholderName);
+        if (placeholder is not null && placeholder.Type != PlaceholderType.Drawing)
+            throw new InvalidDataException(
+                $"Der vorhandene Platzhalter „{special.PlaceholderName}“ hat nicht den Typ Drawing.");
+        if (placeholder is null)
+        {
+            placeholder = new DesignerPlaceholder(special.PlaceholderName, PlaceholderType.Drawing,
+                false, special.Description);
+            Placeholders.Add(placeholder);
+        }
+        SelectedPlaceholder = placeholder;
+        NewElementType = special.RecommendedElementType;
+        NewContent = "$" + special.PlaceholderName;
+        NewWidth = special.RecommendedWidth;
+        NewHeight = special.RecommendedHeight;
+        NewAttributes = "";
+        CanExport = false;
+        SetStatus($"„{special.DisplayName}“ vorbereitet. Position und Größe prüfen, dann ins Layout übernehmen.", false);
+    }
+
     public void RemoveSelectedPlaceholder()
     {
         if (SelectedPlaceholder is not { } selected) return;
@@ -703,6 +735,48 @@ public sealed record DesignerPreviewPage(int Number, Bitmap Image)
     public string Display => $"Dokumentseite {Number}";
 }
 
+public sealed record SpecialContentItem(string DisplayName, string PlaceholderName, string Description,
+    string RecommendedElementType, string RecommendedWidth, string RecommendedHeight);
+
+public static class SpecialContentCatalog
+{
+    public static IReadOnlyList<SpecialContentItem> Items { get; } =
+    [
+        new("Anwesenheitskalender", "Student.AttendanceCalendar",
+            "Monatskalender mit farbigen Anwesenheitsmarkern; Zeitraum und Größe werden beim Erstellen des Briefs gewählt.",
+            "DRAWBOX", "170", "90"),
+        new("Fehltage nach Datum", "Student.AbsenceDays",
+            "Chronologische Liste mit Datum, Fehlzeit oder ganzem Fehltag sowie Entschuldigungsstatus.",
+            "FLOWDRAWBOX", "170", "140"),
+    ];
+
+    public static DrawingValue SampleDrawing(string placeholderName) => placeholderName switch
+    {
+        "Student.AttendanceCalendar" => new DrawingValue(
+        [
+            new DrawString(2, 2, "Anwesenheit · Erika Beispiel", 10, "#1F2937", Bold: true),
+            new DrawRectangle(2, 14, 22, 12, "#D1D5DB", .4f, "#FFFFFF"),
+            new DrawString(9, 16, "12", 7, "#374151"),
+            new DrawRectangle(26, 14, 22, 12, "#C62828", .4f, "#C62828"),
+            new DrawString(34, 16, "U", 7, "#FFFFFF", Bold: true),
+            new DrawRectangle(50, 14, 22, 12, "#2E7D32", .4f, "#2E7D32"),
+            new DrawString(58, 16, "E", 7, "#FFFFFF", Bold: true),
+        ], 28),
+        "Student.AbsenceDays" => new DrawingValue(
+        [
+            new DrawString(2, 2, "Fehltage · Erika Beispiel", 10, "#1F2937", Bold: true),
+            new DrawRectangle(2, 14, 166, 11, "#CBD5E1", .4f, "#F3F4F6"),
+            new DrawString(4, 15, "Datum", 7, "#374151", Bold: true),
+            new DrawString(42, 15, "Umfang", 7, "#374151", Bold: true),
+            new DrawString(116, 15, "Status", 7, "#374151", Bold: true),
+            new DrawString(4, 27, "03.09.2026", 7, "#374151"),
+            new DrawString(42, 27, "Ganzer Fehltag", 7, "#374151"),
+            new DrawString(116, 27, "Entschuldigt", 7, "#2E7D32"),
+        ], 38),
+        _ => DesignerPlaceholder.GenericSampleDrawing(),
+    };
+}
+
 public partial class DesignerAsset(string name, int pixelWidth, int pixelHeight, long byteCount) : ObservableObject
 {
     [ObservableProperty] private int _usageCount;
@@ -757,7 +831,7 @@ public partial class DesignerPlaceholder : ObservableObject
         PlaceholderType.Image => new ImageValue([], "image/png"),
         PlaceholderType.Table => ParseTable(Sample),
         PlaceholderType.Chart => ParseChart(Sample),
-        PlaceholderType.Drawing => SampleDrawing(),
+        PlaceholderType.Drawing => SpecialContentCatalog.SampleDrawing(Name),
         _ => new TextValue(Sample),
     };
     public static string SampleFor(PlaceholderType type) => type switch
@@ -772,7 +846,7 @@ public partial class DesignerPlaceholder : ObservableObject
     }
     private static ChartValue ParseChart(string value) => new([new("Werte", value.Split(';', StringSplitOptions.RemoveEmptyEntries)
         .Select((x, i) => { var parts = x.Split(':', 2); return new ChartPoint(parts[0], parts.Length == 2 && decimal.TryParse(parts[1], CultureInfo.InvariantCulture, out var y) ? y : i + 1); }).ToList())]);
-    private static DrawingValue SampleDrawing() => new DrawingValue(
+    internal static DrawingValue GenericSampleDrawing() => new DrawingValue(
         [new DrawRectangle(0, 0, 80, 24, "#2563EB", 0.8f, "#EFF6FF"),
          new DrawString(4, 4, "Dynamischer Inhalt", 10, "#1E3A8A", Bold: true),
          new MoveTo(4, 19), new LineTo(76, 19, "#93C5FD", 0.6f)], 24);

LehrerApp.TemplateDesigner/MainWindow.axaml

@@ -213,6 +213,21 @@
           <ScrollViewer Padding="8">
             <StackPanel Spacing="12">
               <TextBlock Text="Element hinzufügen" Classes="section"/>
+              <Border BorderBrush="#93C5FD" BorderThickness="1" Background="#EFF6FF"
+                      CornerRadius="6" Padding="12">
+                <StackPanel Spacing="7">
+                  <TextBlock Text="LehrerApp-Sonderinhalte" FontWeight="SemiBold" Foreground="#1E3A8A"/>
+                  <TextBlock Text="Kein technischer Platzhaltername nötig: Inhalt auswählen und übernehmen."
+                             FontSize="11" Foreground="#475569" TextWrapping="Wrap"/>
+                  <ComboBox ItemsSource="{Binding SpecialContents}"
+                            SelectedItem="{Binding SelectedSpecialContent, Mode=TwoWay}"
+                            DisplayMemberBinding="{Binding DisplayName}"/>
+                  <TextBlock Text="{Binding SelectedSpecialContent.Description}" FontSize="11"
+                             Foreground="#475569" TextWrapping="Wrap"/>
+                  <Button Content="Für Layout vorbereiten" HorizontalAlignment="Left"
+                          Click="OnPrepareSpecialContent"/>
+                </StackPanel>
+              </Border>
               <StackPanel><TextBlock Text="Einfügen in" Classes="label"/>
                 <ComboBox ItemsSource="{Binding ElementScopes}" SelectedItem="{Binding NewElementScope}"/></StackPanel>
               <Grid ColumnDefinitions="*,8,*">

LehrerApp.TemplateDesigner/MainWindow.axaml.cs

@@ -58,6 +58,8 @@ public partial class MainWindow : Window
     }
     private void OnAddElement(object? sender, RoutedEventArgs e)
     { try { _viewModel.AddElement(); } catch (Exception ex) { _viewModel.SetStatus(ex.Message, true); } }
+    private void OnPrepareSpecialContent(object? sender, RoutedEventArgs e)
+    { try { _viewModel.PrepareSelectedSpecialContent(); } catch (Exception ex) { _viewModel.SetStatus(ex.Message, true); } }
     private void OnAddPageTemplate(object? sender, RoutedEventArgs e)
     { try { _viewModel.AddPageTemplate(); } catch (Exception ex) { _viewModel.SetStatus(ex.Message, true); } }
     private void OnAddContentFlow(object? sender, RoutedEventArgs e)