Refactor

Source/LibationAvalonia/AvaloniaUtils.cs

@@ -0,0 +1,28 @@
+using Avalonia.Media;
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace LibationAvalonia
+{
+	internal static class AvaloniaUtils
+	{
+		public static IBrush GetBrushFromResources(string name)
+			=> GetBrushFromResources(name, Brushes.Transparent);
+		public static IBrush GetBrushFromResources(string name, IBrush defaultBrush)
+		{
+			if (App.Current.Styles.TryGetResource(name, out var value) && value is IBrush brush)
+				return brush;
+			return defaultBrush;
+		}
+
+		public static T ShowDialogSynchronously<T>(this Avalonia.Controls.Window window, Avalonia.Controls.Window owner)
+		{
+			using var source = new CancellationTokenSource();
+			var dialogTask = window.ShowDialog<T>(owner);
+			dialogTask.ContinueWith(t => source.Cancel(), TaskScheduler.FromCurrentSynchronizationContext());
+			Avalonia.Threading.Dispatcher.UIThread.MainLoop(source.Token);
+			return dialogTask.Result;
+		}
+	}
+}