Feature: Display "shield overlay" indicating when elevation is required

src/Files.App/Constants.cs

@@ -39,6 +39,7 @@ public static class ImageRes
 			public const int OneDrive = 1043;
 			public const int Libraries = 1023;
 			public const int Folder = 3;
+			public const int ShieldIcon = 78;
 		}
 
 		public static class Shell32

src/Files.App/DataModels/NavigationControlItems/DriveItem.cs

@@ -242,7 +242,7 @@ public async Task LoadDriveIcon()
 				if (!string.IsNullOrEmpty(DeviceID) && !string.Equals(DeviceID, "network-folder"))
 					IconData = await FileThumbnailHelper.LoadIconWithoutOverlayAsync(DeviceID, 24);
 
-				IconData ??= UIHelpers.GetIconResourceInfo(Constants.ImageRes.Folder).IconData;
+				IconData ??= UIHelpers.GetSidebarIconResourceInfo(Constants.ImageRes.Folder).IconData;
 			}
 
 			Icon = await IconData.ToBitmapAsync();

src/Files.App/DataModels/SidebarPinnedModel.cs

@@ -128,7 +128,7 @@ public async Task<LocationItem> CreateLocationItemFromPathAsync(string path)
 			}
 			else
 			{
-				locationItem.Icon = await App.Window.DispatcherQueue.EnqueueAsync(() => UIHelpers.GetIconResource(Constants.ImageRes.Folder));
+				locationItem.Icon = await App.Window.DispatcherQueue.EnqueueAsync(() => UIHelpers.GetSidebarIconResource(Constants.ImageRes.Folder));
 				locationItem.IsInvalid = true;
 				Debug.WriteLine($"Pinned item was invalid {res.ErrorCode}, item: {path}");
 			}

src/Files.App/Filesystem/ListedItem.cs

@@ -256,6 +256,19 @@ public BitmapImage PlaceholderDefaultIcon
 			set => SetProperty(ref placeholderDefaultIcon, value);
 		}
 
+		private BitmapImage shieldIcon;
+		public BitmapImage ShieldIcon
+		{
+			get => shieldIcon;
+			set
+			{
+				if (value is not null)
+				{
+					SetProperty(ref shieldIcon, value);
+				}
+			}
+		}
+
 		private string itemPath;
 		public string ItemPath
 		{
@@ -421,6 +434,7 @@ public override string ToString()
 		public virtual bool IsExecutable => FileExtensionHelpers.IsExecutableFile(ItemPath);
 		public bool IsPinned => App.QuickAccessManager.Model.FavoriteItems.Contains(itemPath);
 		public bool IsDriveRoot => ItemPath == PathNormalization.GetPathRoot(ItemPath);
+		public bool IsElevated => CheckElevationRights();
 
 		private BaseStorageFile itemFile;
 		public BaseStorageFile ItemFile
@@ -449,6 +463,13 @@ public void SetDefaultIcon(BitmapImage img)
 			LoadDefaultIcon = true;
 			PlaceholderDefaultIcon = img;
 		}
+
+		private bool CheckElevationRights()
+		{
+			return IsShortcut
+				? ElevationHelpers.IsElevationRequired(((ShortcutItem)this).TargetPath)
+				: ElevationHelpers.IsElevationRequired(this.ItemPath);
+		}
 	}
 
 	public class RecycleBinItem : ListedItem

src/Files.App/Helpers/ElevationHelpers.cs

@@ -0,0 +1,20 @@
+using Microsoft.UI.Xaml.Media.Imaging;
+using System.Runtime.InteropServices;
+using System.Threading.Tasks;
+
+namespace Files.App.Helpers
+{
+	public static class ElevationHelpers
+	{
+		[DllImport("shell32.dll", EntryPoint = "#865", CharSet = CharSet.Unicode, SetLastError = true)]
+		[return: MarshalAs(UnmanagedType.Bool)] private static extern bool _IsElevationRequired([MarshalAs(UnmanagedType.LPWStr)] string pszPath);
+
+		public static bool IsElevationRequired(string filePath)
+		{
+			if (string.IsNullOrEmpty(filePath))
+				return false;
+
+			return _IsElevationRequired(filePath);
+		}
+	}
+}

src/Files.App/Helpers/UIHelpers.cs

@@ -138,22 +138,30 @@ public static void CloseAllDialogs()
 			}
 		}
 
-		private static IEnumerable<IconFileInfo> IconResources = UIHelpers.LoadSidebarIconResources();
+		private static IEnumerable<IconFileInfo> SidebarIconResources = LoadSidebarIconResources();
 
-		public static IconFileInfo GetIconResourceInfo(int index)
+		private static IconFileInfo ShieldIconResource = LoadShieldIconResource();
+
+		public static IconFileInfo GetSidebarIconResourceInfo(int index)
 		{
-			var icons = UIHelpers.IconResources;
+			var icons = UIHelpers.SidebarIconResources;
 			return icons is not null ? icons.FirstOrDefault(x => x.Index == index) : null;
 		}
 
-		public static async Task<BitmapImage> GetIconResource(int index)
+		public static async Task<BitmapImage?> GetSidebarIconResource(int index)
 		{
-			var iconInfo = GetIconResourceInfo(index);
-			if (iconInfo is not null)
-			{
-				return await iconInfo.IconData.ToBitmapAsync();
-			}
-			return null;
+			var iconInfo = GetSidebarIconResourceInfo(index);
+
+			return iconInfo is not null
+				? await iconInfo.IconData.ToBitmapAsync()
+				: null;
+		}
+
+		public static async Task<BitmapImage?> GetShieldIconResource()
+		{
+			return ShieldIconResource is not null
+				? await ShieldIconResource.IconData.ToBitmapAsync()
+				: null;
 		}
 
 		private static IEnumerable<IconFileInfo> LoadSidebarIconResources()
@@ -170,5 +178,15 @@ private static IEnumerable<IconFileInfo> LoadSidebarIconResources()
 
 			return imageResList;
 		}
+
+		private static IconFileInfo LoadShieldIconResource()
+		{
+			string imageres = Path.Combine(CommonPaths.SystemRootPath, "System32", "imageres.dll");
+			var imageResList = Win32API.ExtractSelectedIconsFromDLL(imageres, new List<int>() {
+					Constants.ImageRes.ShieldIcon
+				}, 16);
+
+			return imageResList.First();
+		}
 	}
 }

src/Files.App/ViewModels/ItemViewModel.cs

@@ -90,6 +90,8 @@ public ListedItem CurrentFolder
 
 		private FileSystemWatcher watcher;
 
+		private static BitmapImage shieldIcon;
+
 		private CancellationTokenSource addFilesCTS;
 		private CancellationTokenSource semaphoreCTS;
 		private CancellationTokenSource loadPropsCTS;
@@ -837,7 +839,7 @@ public void UpdateGroupOptions()
 			FilesAndFolders.GetExtendedGroupHeaderInfo = groupInfoSelector.Item2;
 		}
 
-		public Dictionary<string, BitmapImage> DefaultIcons = new();
+		public Dictionary<string, BitmapImage> DefaultIcons = new ();
 
 		private uint currentDefaultIconSize = 0;
 
@@ -867,6 +869,13 @@ public bool IsLoadingItems
 			set => isLoadingItems = value;
 		}
 
+		private async Task<BitmapImage> GetShieldIcon()
+		{
+			shieldIcon ??= await UIHelpers.GetShieldIconResource();
+
+			return shieldIcon;
+		}
+
 		// ThumbnailSize is set to 96 so that unless we override it, mode is in turn set to SingleItem
 		private async Task LoadItemThumbnail(ListedItem item, uint thumbnailSize = 96, IStorageItem? matchingStorageItem = null)
 		{
@@ -910,6 +919,7 @@ await dispatcherQueue.EnqueueAsync(async () =>
 							await dispatcherQueue.EnqueueAsync(async () =>
 							{
 								item.IconOverlay = await overlayInfo.ToBitmapAsync();
+								item.ShieldIcon = await GetShieldIcon();
 							}, Microsoft.UI.Dispatching.DispatcherQueuePriority.Low);
 						}
 					}
@@ -937,6 +947,7 @@ await dispatcherQueue.EnqueueAsync(async () =>
 						await dispatcherQueue.EnqueueAsync(async () =>
 						{
 							item.IconOverlay = await iconInfo.OverlayData.ToBitmapAsync();
+							item.ShieldIcon = await GetShieldIcon();
 						}, Microsoft.UI.Dispatching.DispatcherQueuePriority.Low);
 					}
 				}
@@ -972,6 +983,7 @@ await dispatcherQueue.EnqueueAsync(async () =>
 							await dispatcherQueue.EnqueueAsync(async () =>
 							{
 								item.IconOverlay = await overlayInfo.ToBitmapAsync();
+								item.ShieldIcon = await GetShieldIcon();
 							}, Microsoft.UI.Dispatching.DispatcherQueuePriority.Low);
 						}
 					}
@@ -993,6 +1005,7 @@ await dispatcherQueue.EnqueueAsync(async () =>
 						await dispatcherQueue.EnqueueAsync(async () =>
 						{
 							item.IconOverlay = await iconInfo.OverlayData.ToBitmapAsync();
+							item.ShieldIcon = await GetShieldIcon();
 						}, Microsoft.UI.Dispatching.DispatcherQueuePriority.Low);
 					}
 				}

src/Files.App/ViewModels/SidebarViewModel.cs

@@ -494,7 +494,7 @@ private async Task<LocationItem> CreateSection(SectionType sectionType)
 
 				if (iconIdex != -1)
 				{
-					section.Icon = await UIHelpers.GetIconResource(iconIdex);
+					section.Icon = await UIHelpers.GetSidebarIconResource(iconIdex);
 				}
 			}
 

src/Files.App/Views/LayoutModes/ColumnViewBase.xaml

@@ -133,7 +133,7 @@
 			Canvas.ZIndex="0"
 			EmptyTextType="{x:Bind ParentShellPageInstance.FilesystemViewModel.EmptyTextType, Mode=OneWay}" />
 
-		<!--  Invalid Item Name Tip  -->
+		<!--  Invalid Item Name Tip	 -->
 		<TeachingTip
 			x:Name="FileNameTeachingTip"
 			Grid.RowSpan="2"
@@ -149,7 +149,7 @@
 			ViewChangeStarted="SemanticZoom_ViewChangeStarted"
 			Visibility="{x:Bind FolderSettings.IsLayoutModeChanging, Mode=OneWay, Converter={StaticResource NegatedBoolToVisibilityConverter}}">
 
-			<!--  Main View  -->
+			<!--  Main View	 -->
 			<SemanticZoom.ZoomedInView>
 				<ListView
 					x:Name="FileList"
@@ -199,7 +199,7 @@
 									<ColumnDefinition Width="Auto" />
 								</Grid.ColumnDefinitions>
 
-								<!--  Thumbnail  -->
+								<!--  Thumbnail	 -->
 								<Grid
 									Grid.Column="0"
 									Width="24"
@@ -262,9 +262,19 @@
 										Visibility="{x:Bind IsShortcut}">
 										<uc:OpacityIcon Style="{StaticResource ColorIconShortcut}" />
 									</Border>
+									<Image
+										x:Name="ShieldOverlay"
+										Width="8"
+										Height="8"
+										Margin="2"
+										HorizontalAlignment="Right"
+										VerticalAlignment="Bottom"
+										x:Load="{x:Bind IsElevated}"
+										Source="{x:Bind ShieldIcon, Mode=OneWay}"
+										Stretch="Uniform" />
 								</Grid>
 
-								<!--  Item Name  -->
+								<!--  Item Name	 -->
 								<TextBlock
 									x:Name="ItemName"
 									Grid.Column="1"
@@ -290,7 +300,7 @@
 								<Grid Grid.Column="2">
 									<StackPanel Orientation="Horizontal" Spacing="4">
 
-										<!--  Cloud Status  -->
+										<!--  Cloud Status	-->
 										<FontIcon
 											x:Name="CloudDriveSyncStatusGlyph"
 											HorizontalAlignment="Center"
@@ -391,7 +401,7 @@
 				</ListView>
 			</SemanticZoom.ZoomedInView>
 
-			<!--  Grouped View  -->
+			<!--  Grouped View	-->
 			<SemanticZoom.ZoomedOutView>
 				<ListView
 					HorizontalAlignment="Stretch"
@@ -427,7 +437,7 @@
 											Style="{StaticResource SubtitleTextBlockStyle}"
 											Text="{x:Bind ((helpers:IGroupedCollectionHeader)Group).Model.Text, Mode=OneWay}" />
 
-										<!--  Count  -->
+										<!--  Count	 -->
 										<TextBlock
 											Margin="4,0,0,0"
 											VerticalAlignment="Center"
@@ -436,7 +446,7 @@
 											Text="{x:Bind ((helpers:IGroupedCollectionHeader)Group).Model.CountText, Mode=OneWay}"
 											Visibility="{x:Bind ((helpers:IGroupedCollectionHeader)Group).Model.ShowCountTextBelow, Mode=OneWay, Converter={StaticResource NegatedBoolToVisibilityConverter}}" />
 
-										<!--  Subheader  -->
+										<!--  Subheader	 -->
 										<TextBlock
 											VerticalAlignment="Center"
 											FontSize="14"
@@ -463,7 +473,7 @@
 
 		</SemanticZoom>
 
-		<!--  Selector  -->
+		<!--  Selector	-->
 		<Canvas>
 			<Rectangle
 				Name="SelectionRectangle"

src/Files.App/Views/LayoutModes/DetailsLayoutBrowser.xaml

@@ -624,6 +624,15 @@
 												x:Load="{x:Bind IsShortcut}">
 												<uc:OpacityIcon Style="{StaticResource ColorIconShortcut}" />
 											</Border>
+											<Image
+												x:Name="ShieldOverlay"
+												Width="8"
+												Height="8"
+												HorizontalAlignment="Right"
+												VerticalAlignment="Bottom"
+												x:Load="{x:Bind IsElevated}"
+												Source="{x:Bind ShieldIcon, Mode=OneWay}"
+												Stretch="Uniform" />
 										</Grid>
 									</Grid>
 

src/Files.App/Views/LayoutModes/GridViewBrowser.xaml

@@ -149,6 +149,17 @@
 							<uc:OpacityIcon Style="{StaticResource ColorIconShortcut}" />
 						</Viewbox>
 
+						<Image
+							x:Name="ShieldOverlay"
+							Width="16"
+							Height="16"
+							Margin="14"
+							HorizontalAlignment="Right"
+							VerticalAlignment="Bottom"
+							x:Load="{x:Bind IsElevated}"
+							x:Phase="1"
+							Source="{x:Bind ShieldIcon, Mode=OneWay}"
+							Stretch="Uniform" />
 					</Grid>
 
 					<Grid
@@ -371,6 +382,16 @@
 							<uc:OpacityIcon Style="{StaticResource ColorIconShortcut}" />
 						</Viewbox>
 
+						<Image
+							x:Name="ShieldOverlay"
+							Width="16"
+							Height="16"
+							HorizontalAlignment="Right"
+							VerticalAlignment="Bottom"
+							x:Load="{x:Bind IsElevated}"
+							x:Phase="1"
+							Source="{x:Bind ShieldIcon, Mode=OneWay}"
+							Stretch="Uniform" />
 					</Grid>
 
 					<Grid