feat: WIP.

src/Ursa/Controls/OverlayShared/OverlayDialogManager.cs

@@ -0,0 +1,42 @@
+using System.Collections.Concurrent;
+
+namespace Ursa.Controls;
+
+internal static class OverlayDialogManager
+{
+    private static OverlayDialogHost? _defaultHost;
+    private static readonly ConcurrentDictionary<string, OverlayDialogHost> Hosts = new();
+    
+    public static void RegisterHost(OverlayDialogHost host, string? id)
+    {
+        if (id == null)
+        {
+            if (_defaultHost != null)
+            {
+                throw new InvalidOperationException("Cannot register multiple OverlayDialogHost with empty HostId");
+            }
+            _defaultHost = host;
+            return;
+        }
+        Hosts.TryAdd(id, host);
+    }
+    
+    public static void UnregisterHost(string? id)
+    {
+        if (id is null)
+        {
+            _defaultHost = null;
+            return;
+        }
+        Hosts.TryRemove(id, out _);
+    }
+    
+    public static OverlayDialogHost? GetHost(string? id)
+    {
+        if (id is null)
+        {
+            return _defaultHost;
+        }
+        return Hosts.TryGetValue(id, out var host) ? host : null;
+    }
+}