How to use Dock without XAML?

[xoofx]

Hey,
I'm trying to get Dock working in a no XAML simple hello world app, and I'm not able to display the dock. It must be something very obvious that I'm missing.

Here is the code that I'm using:

using Avalonia;
using Avalonia.Controls;
using Avalonia.Controls.ApplicationLifetimes;
using Avalonia.Layout;
using Avalonia.Themes.Simple;
using Dock.Avalonia.Controls;
using Dock.Model.Avalonia;
using Dock.Model.Avalonia.Controls;
using Dock.Model.Controls;
using Dock.Model.Core;
using Orientation = Avalonia.Layout.Orientation;

namespace TestAvalonia;

internal class Program
{
    static void Main(string[] args)
    {
        AppBuilder
            .Configure<App>()
            .UsePlatformDetect()
            .StartWithClassicDesktopLifetime(args);
    }

    class App : Application
    {
        public override void Initialize()
        {
            Styles.Add(new SimpleTheme());
        }
        
        public override void OnFrameworkInitializationCompleted()
        {
            if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
            {
                desktop.MainWindow = new MainWindow();
            }
            base.OnFrameworkInitializationCompleted();
        }
    }

    class MainWindow : Window
    {
        public MainWindow()
        {
            Title = "Single-File Avalonia App";
            Width = 400;
            Height = 200;

            var textBox = new TextBox { Width = 300, Margin = new Thickness(10) };
            var okButton = new Button { Content = "OK", Width = 80, Margin = new Thickness(5) };
            var cancelButton = new Button { Content = "Cancel", Width = 80, Margin = new Thickness(5) };

            okButton.Click += (_, _) => Console.WriteLine($"Entered Text: {textBox.Text}");
            cancelButton.Click += (_, _) => Close();

            var factory = new MyDockFactory();
            var layout = factory.CreateLayout();
            factory.InitLayout(layout);

            var dockControl = new DockControl()
            {
                Factory = factory,
                Layout = layout,
                InitializeFactory = true,
                InitializeLayout = true,
                Width = 200,
                Height = 100,
            };

            Content = new StackPanel
            {
                HorizontalAlignment = HorizontalAlignment.Center,
                VerticalAlignment = VerticalAlignment.Center,
                Children =
                {
                    dockControl,
                    textBox,
                    new StackPanel
                    {
                        Orientation = Orientation.Horizontal,
                        HorizontalAlignment = HorizontalAlignment.Center,
                        Children = { okButton, cancelButton }
                    }
                }
            };
        }
        
        private class MyDockFactory : Factory
        {
            public override IRootDock CreateLayout()
            {
                var document = new Document
                {
                    Id = "Document1",
                    Title = "My Document",
                    Content = new TextBlock
                    {
                        Text = "Hello, Docking!",
                        HorizontalAlignment = HorizontalAlignment.Center,
                        VerticalAlignment = VerticalAlignment.Center
                    }
                };

                var documentDock = new DocumentDock
                {
                    Id = "DocumentsPane",
                    Title = "Documents",
                    VisibleDockables = CreateList<IDockable>(document),
                    ActiveDockable = document,
                    DefaultDockable = document
                };

                var rootDock = CreateRootDock();
                rootDock.IsCollapsable = false;
                rootDock.VisibleDockables = CreateList<IDockable>(documentDock);
                rootDock.ActiveDockable = documentDock;
                rootDock.DefaultDockable = documentDock;

                return rootDock;
            }
        }
    }
}

Any ideas what could be misconfigured here?

[xoofx]

It seems that's because I forgot to add styling, so the control template from Dock was not found:

Styles.Add(new DockSimpleTheme()); // Add this line

Then TextBlock is now failing, but I understand why.