FluentAvalonia/samples/FluentAvaloniaSamples/Services/NavigationService.cs

using System;
using Avalonia.Controls;
using FluentAvalonia.UI.Controls;
using FluentAvaloniaSamples.Controls;

namespace FluentAvaloniaSamples.Services;

public class NavigationService
{
    public static NavigationService Instance { get; } = new NavigationService();

    public void SetFrame(Frame f)
    {
        _frame = f;
    }

    public void SetOverlayHost(Panel p)
    {
        _overlayHost = p;
    }

    public void Navigate(Type t)
    {
        _frame.Navigate(t);
    }

    public void ShowControlDefinitionOverlay(Type targetType)
    {
        if (_overlayHost != null)
        {
            (_overlayHost.Children[0] as ControlDefinitionOverlay).TargetType = targetType;
            (_overlayHost.Children[0] as ControlDefinitionOverlay).Show();
        }
    }

    public void ClearOverlay()
    {
        _overlayHost?.Children.Clear();

    }

    private Frame _frame;
    private Panel _overlayHost;
}