feat: Add refresh indication support for non-mobile platforms

src/Uno.UI/Microsoft/UI/Xaml/Controls/PullToRefresh/Native/NativeVisualizer.cs → src/Uno.UI/Microsoft/UI/Xaml/Controls/PullToRefresh/Native/NativeRefreshVisualizer.cs

@@ -3,7 +3,7 @@
 
 namespace Uno.UI.Xaml.Controls;
 
-public partial class NativeRefreshVisualizer : RefreshVisualizer
+internal partial class NativeRefreshVisualizer : RefreshVisualizer
 {
 }
 #endif

src/Uno.UI/Microsoft/UI/Xaml/Controls/PullToRefresh/ProgressRing/ProgressRingRefreshInfoProviderAdapter.cs

@@ -0,0 +1,67 @@
+using Microsoft.UI.Private.Controls;
+using Microsoft.UI.Xaml.Controls;
+using Windows.Foundation;
+using Windows.UI.Xaml;
+
+namespace Uno.UI.Xaml.Controls;
+
+internal class ProgressRingRefreshInfoProviderAdapter : IRefreshInfoProviderAdapter
+{
+	private readonly RefreshContainer _refreshContainer;
+	private IRefreshInfoProvider _refreshInfoProvider;
+	private ProgressRingRefreshVisualizer _progressRingVisualizer;
+
+	public ProgressRingRefreshInfoProviderAdapter(RefreshContainer refreshContainer)
+	{
+		_refreshContainer = refreshContainer;
+	}
+
+	public IRefreshInfoProvider AdaptFromTree(UIElement root, Size visualizerSize)
+	{
+		_refreshInfoProvider = new RefreshInfoProviderImpl();
+		_refreshInfoProvider.RefreshStarted += OnRefreshStarted;
+		_refreshInfoProvider.RefreshCompleted += OnRefreshCompleted;
+		return _refreshInfoProvider;
+	}
+
+	private void OnRefreshStarted(IRefreshInfoProvider sender, object args)
+	{
+		_progressRingVisualizer.Visibility = Visibility.Visible;
+		_progressRingVisualizer.ProgressRing.Visibility = Visibility.Visible;
+		_progressRingVisualizer.ProgressRing.IsActive = true;
+	}
+
+	private void OnRefreshCompleted(IRefreshInfoProvider sender, object args)
+	{
+		_progressRingVisualizer.Visibility = Visibility.Collapsed;
+		_progressRingVisualizer.ProgressRing.Visibility = Visibility.Collapsed;
+		_progressRingVisualizer.ProgressRing.IsActive = false;
+	}
+
+	public void SetAnimations(UIElement refreshVisualizerAnimatableContainer)
+	{
+		if (refreshVisualizerAnimatableContainer is ProgressRingRefreshVisualizer progressRingVisualizer)
+		{
+			if (_progressRingVisualizer != progressRingVisualizer)
+			{
+				progressRingVisualizer.Visibility = Visibility.Collapsed;
+				progressRingVisualizer.ProgressRing.IsActive = false;
+				_progressRingVisualizer = progressRingVisualizer;
+			}
+		}
+		else
+		{
+			_progressRingVisualizer = null;
+		}
+	}
+
+	public void Dispose()
+	{
+		// Unsubscribe events.
+		if (_refreshInfoProvider != null)
+		{
+			_refreshInfoProvider.RefreshStarted -= OnRefreshStarted;
+			_refreshInfoProvider.RefreshCompleted -= OnRefreshCompleted;
+		}
+	}
+}

src/Uno.UI/Microsoft/UI/Xaml/Controls/PullToRefresh/ProgressRing/ProgressRingRefreshVisualizer.cs

@@ -0,0 +1,15 @@
+using Microsoft.UI.Xaml.Controls;
+
+using WUXProgressRing = Windows.UI.Xaml.Controls.ProgressRing;
+
+namespace Uno.UI.Xaml.Controls;
+
+internal class ProgressRingRefreshVisualizer : RefreshVisualizer
+{
+	public ProgressRingRefreshVisualizer()
+	{
+		Content = ProgressRing;
+	}
+
+	internal WUXProgressRing ProgressRing { get; } = new WUXProgressRing();
+}

src/Uno.UI/Microsoft/UI/Xaml/Controls/PullToRefresh/RefreshContainer/RefreshContainer.cs

@@ -13,11 +13,12 @@ private void SetDefaultRefreshInfoProviderAdapter()
 	{
 		if (m_refreshInfoProviderAdapter is not null)
 		{
-			m_refreshInfoProviderAdapter.Dispose();
+			// TODO Uno specific: We currently don't need to switch refresh info provider adapter.
+			return;
 		}
 
 #if !__ANDROID__ && !__IOS__
-		m_refreshInfoProviderAdapter =  new StubIRefreshInfoProviderAdapter();
+		m_refreshInfoProviderAdapter =  new ProgressRingRefreshInfoProviderAdapter(this);
 #else
 		m_refreshInfoProviderAdapter = new NativeRefreshInfoProviderAdapter(this);
 #endif
@@ -26,7 +27,7 @@ private void SetDefaultRefreshInfoProviderAdapter()
 	private void SetDefaultRefreshVisualizer()
 	{
 #if !__ANDROID__ && !__IOS__
-		Visualizer = new RefreshVisualizer();
+		Visualizer = new ProgressRingRefreshVisualizer();
 #else
 		Visualizer = new NativeRefreshVisualizer();
 #endif