Feature: Show a progress ring or bar while loading in the properties window

src/Files.App/Data/Models/SelectedItemsPropertiesViewModel.cs

@@ -613,5 +613,12 @@ public bool RunAsAdminEnabled
 			get => runAsAdminEnabled;
 			set => SetProperty(ref runAsAdminEnabled, value);
 		}
+
+		private bool isPropertiesLoaded;
+		public bool IsPropertiesLoaded
+		{
+			get => isPropertiesLoaded;
+			set => SetProperty(ref isPropertiesLoaded, value);
+		}
 	}
 }

src/Files.App/ViewModels/Properties/HashesViewModel.cs

@@ -81,7 +81,7 @@ private void ToggleIsEnabled(string? algorithm)
 
 			if (hashInfoItem.HashValue is null && hashInfoItem.IsEnabled)
 			{
-				hashInfoItem.HashValue = "Calculating".GetLocalizedResource();
+				hashInfoItem.IsCalculating = true;
 
 				App.Window.DispatcherQueue.EnqueueOrInvokeAsync(async () =>
 				{
@@ -111,6 +111,10 @@ private void ToggleIsEnabled(string? algorithm)
 					{
 						hashInfoItem.HashValue = "CalculationError".GetLocalizedResource();
 					}
+					finally
+					{
+						hashInfoItem.IsCalculating = false;
+					}
 				});
 			}
 		}

src/Files.App/Views/Properties/DetailsPage.xaml

@@ -6,6 +6,7 @@
 	xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
 	xmlns:helpers="using:Files.App.Helpers"
 	xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+	xmlns:toolkitconverters="using:CommunityToolkit.WinUI.UI.Converters"
 	xmlns:vm="using:Files.App.ViewModels.Properties"
 	Loaded="Properties_Loaded"
 	Tag="Details"
@@ -16,16 +17,33 @@
 			<ResourceDictionary.MergedDictionaries>
 				<ResourceDictionary Source="ms-appx:///ResourceDictionaries/PropertiesStyles.xaml" />
 			</ResourceDictionary.MergedDictionaries>
+			<toolkitconverters:BoolNegationConverter x:Key="BoolNegationConverter" />
 		</ResourceDictionary>
 	</Page.Resources>
 
 	<ScrollViewer>
 		<Grid Padding="12">
 
+			<!--  Loading  -->
+			<StackPanel
+				x:Name="LoadingStatePanel"
+				HorizontalAlignment="Center"
+				VerticalAlignment="Center"
+				x:Load="{x:Bind ViewModel.IsPropertiesLoaded, Converter={StaticResource BoolNegationConverter}, Mode=OneWay}"
+				Spacing="8">
+				<ProgressRing HorizontalAlignment="Center" IsIndeterminate="True" />
+				<TextBlock
+					x:Name="LoadingTextBlock"
+					HorizontalAlignment="Center"
+					Style="{StaticResource BodyStrongTextBlockStyle}"
+					Text="{helpers:ResourceString Name=Loading}" />
+			</StackPanel>
+
 			<!--  Details Expander List  -->
 			<ListView
 				x:Name="MainList"
 				HorizontalAlignment="Stretch"
+				x:Load="{x:Bind ViewModel.IsPropertiesLoaded, Mode=OneWay}"
 				ItemsSource="{x:Bind ViewModel.PropertySections, Mode=OneWay}"
 				SelectionMode="None">
 

src/Files.App/Views/Properties/DetailsPage.xaml.cs

@@ -24,6 +24,8 @@ protected override async void Properties_Loaded(object sender, RoutedEventArgs e
 				await fileProps.GetSystemFilePropertiesAsync();
 				stopwatch.Stop();
 				Debug.WriteLine(string.Format("System file properties were obtained in {0} milliseconds", stopwatch.ElapsedMilliseconds));
+
+				ViewModel.IsPropertiesLoaded = true;
 			}
 		}
 

src/Files.App/Views/Properties/HashesPage.xaml

@@ -145,10 +145,30 @@
 									Style="{StaticResource BodyTextBlockStyle}"
 									Text="{x:Bind Algorithm}" />
 
+								<!--  Calculating  -->
+								<StackPanel
+									x:Name="CalculatingPanel"
+									Grid.Column="2"
+									x:Load="{x:Bind IsCalculating, Mode=OneWay}"
+									Orientation="Horizontal">
+									<TextBlock
+										VerticalAlignment="Center"
+										Style="{StaticResource BodyTextBlockStyle}"
+										Text="{helpers:ResourceString Name=Calculating}" />
+
+									<ProgressBar
+										Width="100"
+										Margin="16,0,0,0"
+										HorizontalAlignment="Left"
+										IsIndeterminate="True" />
+								</StackPanel>
+
 								<!--  Hash Value  -->
 								<TextBlock
+									x:Name="HashValueText"
 									Grid.Column="2"
 									VerticalAlignment="Center"
+									x:Load="{x:Bind IsCalculating, Converter={StaticResource BoolNegationConverter}, Mode=OneWay}"
 									Style="{StaticResource BodyTextBlockStyle}"
 									Text="{x:Bind HashValue, Mode=OneWay}"
 									TextTrimming="CharacterEllipsis"

src/Files.Backend/Models/HashInfoItem.cs

@@ -28,6 +28,13 @@ public bool IsSelected
 			set => SetProperty(ref _IsSelected, value);
 		}
 
+		private bool _IsCalculating;
+		public bool IsCalculating
+		{
+			get => _IsCalculating;
+			set => SetProperty(ref _IsCalculating, value);
+		}
+
 		private bool _IsCalculated;
 		public bool IsCalculated
 		{