[Peek]Support for special folders like Recycle Bin and My PC (#33310)

* Peek support for special folders

* Renamed ThisComputer->ThisPC

* Used different variable name to avoid spellcheck issues

* Made label of empty fields hidden

* Removed ThisPC special handling and last modified date of recycle bin

Directory.Build.props

@@ -85,7 +85,7 @@
     <UsePrecompiledHeaders Condition="'$(TF_BUILD)' != ''">false</UsePrecompiledHeaders>
 
     <!-- Change this to bust the cache -->
-    <MSBuildCacheCacheUniverse Condition="'$(MSBuildCacheCacheUniverse)' == ''">202310210737</MSBuildCacheCacheUniverse>
+    <MSBuildCacheCacheUniverse Condition="'$(MSBuildCacheCacheUniverse)' == ''">202406130737</MSBuildCacheCacheUniverse>
 
     <!--
       Visual Studio telemetry reads various ApplicationInsights.config files and other files after the project is finished, likely in a detached process.

src/modules/peek/Peek.Common/Helpers/PathHelper.cs

@@ -0,0 +1,12 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+
+namespace Peek.Common.Helpers;
+
+public static class PathHelper
+{
+    public static bool IsUncPath(string path) => Uri.TryCreate(path, UriKind.Absolute, out Uri? uri) && uri != null && uri.IsUnc;
+}

src/modules/peek/Peek.Common/Helpers/ThreadHelper.cs

@@ -0,0 +1,26 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Threading;
+
+namespace Peek.Common.Helpers;
+
+public static class ThreadHelper
+{
+    public static void RunOnSTAThread(ThreadStart action)
+    {
+        if (Thread.CurrentThread.GetApartmentState() == ApartmentState.STA)
+        {
+            action();
+        }
+        else
+        {
+            Thread staThread = new(action);
+            staThread.SetApartmentState(ApartmentState.STA);
+            staThread.Start();
+            staThread.Join();
+        }
+    }
+}

src/modules/peek/Peek.Common/Models/FileItem.cs

@@ -24,6 +24,8 @@ namespace Peek.Common.Models
 
         public string Name { get; init; }
 
+        public string ParsingName => string.Empty;
+
         public string Path { get; init; }
 
         public string Extension => System.IO.Path.GetExtension(Path).ToLower(CultureInfo.InvariantCulture);

src/modules/peek/Peek.Common/Models/FolderItem.cs

@@ -11,19 +11,15 @@ using Windows.Storage;
 
 namespace Peek.Common.Models
 {
-    public class FolderItem : IFileSystemItem
+    public class FolderItem(string path, string name, string parsingName) : IFileSystemItem
     {
         private StorageFolder? storageFolder;
 
-        public FolderItem(string path, string name)
-        {
-            Path = path;
-            Name = name;
-        }
+        public string Name { get; init; } = name;
 
-        public string Name { get; init; }
+        public string ParsingName { get; init; } = parsingName;
 
-        public string Path { get; init; }
+        public string Path { get; init; } = path;
 
         public string Extension => string.Empty;
 
@@ -38,7 +34,7 @@ namespace Peek.Common.Models
             {
                 try
                 {
-                    storageFolder = await StorageFolder.GetFolderFromPathAsync(Path);
+                    storageFolder = string.IsNullOrEmpty(Path) ? null : await StorageFolder.GetFolderFromPathAsync(Path);
                 }
                 catch (Exception ex)
                 {

src/modules/peek/Peek.Common/Models/IFileSystemItem.cs

@@ -17,25 +17,24 @@ namespace Peek.Common.Models
         {
             get
             {
-                DateTime? dateModified;
                 try
                 {
-                    dateModified = System.IO.File.GetCreationTime(Path);
+                    return string.IsNullOrEmpty(Path) ? null : System.IO.File.GetCreationTime(Path);
                 }
                 catch
                 {
-                    dateModified = null;
+                    return null;
                 }
-
-                return dateModified;
             }
         }
 
         public string Extension { get; }
 
-        public string Name { get; init; }
+        public string Name { get; }
 
-        public string Path { get; init; }
+        public string ParsingName { get; }
+
+        public string Path { get; }
 
         public ulong FileSizeBytes => PropertyStoreHelper.TryGetUlongProperty(Path, PropertyKey.FileSizeBytes) ?? 0;
 

src/modules/peek/Peek.FilePreviewer/Controls/SpecialFolderPreview/SpecialFolderInformationalPreviewControl.xaml

@@ -0,0 +1,57 @@
+<!--  Copyright (c) Microsoft Corporation and Contributors.  -->
+<!--  Licensed under the MIT License.  -->
+
+<UserControl
+    x:Class="Peek.FilePreviewer.Controls.SpecialFolderInformationalPreviewControl"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    mc:Ignorable="d">
+
+    <Grid ColumnSpacing="24">
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition x:Name="Icon" Width="Auto" />
+            <ColumnDefinition x:Name="FileInfo" Width="*" />
+        </Grid.ColumnDefinitions>
+
+        <Image
+            x:Name="FileIcon"
+            Grid.Column="0"
+            Width="180"
+            Height="180"
+            Source="{x:Bind Source.IconPreview, Mode=OneWay}" />
+
+        <StackPanel
+            Grid.Column="1"
+            VerticalAlignment="Center"
+            Spacing="4">
+
+            <TextBlock
+                MaxLines="3"
+                Style="{StaticResource TitleTextBlockStyle}"
+                Text="{x:Bind Source.FileName, Mode=OneWay}"
+                TextTrimming="CharacterEllipsis"
+                TextWrapping="Wrap">
+                <ToolTipService.ToolTip>
+                    <ToolTip Content="{x:Bind Source.FileName, Mode=OneWay}" />
+                </ToolTipService.ToolTip>
+            </TextBlock>
+            <TextBlock Text="{x:Bind FormatFileType(Source.FileType), Mode=OneWay}">
+                <ToolTipService.ToolTip>
+                    <ToolTip Content="{x:Bind FormatFileType(Source.FileType), Mode=OneWay}" />
+                </ToolTipService.ToolTip>
+            </TextBlock>
+            <TextBlock Text="{x:Bind FormatFileSize(Source.FileSize), Mode=OneWay}">
+                <ToolTipService.ToolTip>
+                    <ToolTip Content="{x:Bind FormatFileSize(Source.FileSize), Mode=OneWay}" />
+                </ToolTipService.ToolTip>
+            </TextBlock>
+            <TextBlock Text="{x:Bind FormatFileDateModified(Source.DateModified), Mode=OneWay}">
+                <ToolTipService.ToolTip>
+                    <ToolTip Content="{x:Bind FormatFileDateModified(Source.DateModified), Mode=OneWay}" />
+                </ToolTipService.ToolTip>
+            </TextBlock>
+        </StackPanel>
+    </Grid>
+</UserControl>

src/modules/peek/Peek.FilePreviewer/Controls/SpecialFolderPreview/SpecialFolderInformationalPreviewControl.xaml.cs

@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using Microsoft.UI.Xaml;
+using Microsoft.UI.Xaml.Controls;
+using Peek.Common.Helpers;
+using Peek.FilePreviewer.Models;
+
+namespace Peek.FilePreviewer.Controls;
+
+public sealed partial class SpecialFolderInformationalPreviewControl : UserControl
+{
+    public static readonly DependencyProperty SourceProperty = DependencyProperty.Register(
+        nameof(Source),
+        typeof(SpecialFolderPreviewData),
+        typeof(SpecialFolderInformationalPreviewControl),
+        new PropertyMetadata(null));
+
+    public SpecialFolderPreviewData? Source
+    {
+        get { return (SpecialFolderPreviewData)GetValue(SourceProperty); }
+        set { SetValue(SourceProperty, value); }
+    }
+
+    public SpecialFolderInformationalPreviewControl()
+    {
+        InitializeComponent();
+    }
+
+    public string FormatFileType(string? fileType) => FormatField("UnsupportedFile_FileType", fileType);
+
+    public string FormatFileSize(string? fileSize) => FormatField("UnsupportedFile_FileSize", fileSize);
+
+    public string FormatFileDateModified(string? fileDateModified) => FormatField("UnsupportedFile_DateModified", fileDateModified);
+
+    private static string FormatField(string resourceId, string? fieldValue)
+    {
+        return string.IsNullOrWhiteSpace(fieldValue) ? string.Empty : ReadableStringHelper.FormatResourceString(resourceId, fieldValue);
+    }
+}

src/modules/peek/Peek.FilePreviewer/Controls/SpecialFolderPreview/SpecialFolderPreview.xaml

@@ -0,0 +1,25 @@
+<!--  Copyright (c) Microsoft Corporation and Contributors.  -->
+<!--  Licensed under the MIT License.  -->
+
+<UserControl
+    x:Class="Peek.FilePreviewer.Controls.SpecialFolderPreview"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:controls="using:Peek.FilePreviewer.Controls"
+    xmlns:conv="using:Peek.Common.Converters"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:prev="using:Peek.FilePreviewer.Previewers"
+    mc:Ignorable="d">
+
+    <Grid
+        Margin="24"
+        HorizontalAlignment="Stretch"
+        VerticalAlignment="Center">
+
+        <controls:SpecialFolderInformationalPreviewControl
+            x:Name="InformationPreview"
+            Source="{x:Bind Source, Mode=OneWay}"
+            Visibility="{x:Bind IsVisibleIfStatesMatch(LoadingState, prev:PreviewState.Loaded), Mode=OneWay}" />
+    </Grid>
+</UserControl>

src/modules/peek/Peek.FilePreviewer/Controls/SpecialFolderPreview/SpecialFolderPreview.xaml.cs

@@ -0,0 +1,47 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using CommunityToolkit.Mvvm.ComponentModel;
+using Microsoft.UI.Xaml;
+using Microsoft.UI.Xaml.Controls;
+using Peek.Common.Converters;
+using Peek.FilePreviewer.Models;
+using Peek.FilePreviewer.Previewers;
+
+namespace Peek.FilePreviewer.Controls;
+
+[INotifyPropertyChanged]
+public sealed partial class SpecialFolderPreview : UserControl
+{
+    public static readonly DependencyProperty SourceProperty = DependencyProperty.Register(
+            nameof(Source),
+            typeof(SpecialFolderPreviewData),
+            typeof(SpecialFolderPreview),
+            new PropertyMetadata(null));
+
+    public static readonly DependencyProperty LoadingStateProperty = DependencyProperty.Register(
+        nameof(LoadingState),
+        typeof(PreviewState),
+        typeof(SpecialFolderPreview),
+        new PropertyMetadata(PreviewState.Uninitialized));
+
+    public SpecialFolderPreviewData? Source
+    {
+        get { return (SpecialFolderPreviewData)GetValue(SourceProperty); }
+        set { SetValue(SourceProperty, value); }
+    }
+
+    public PreviewState? LoadingState
+    {
+        get { return (PreviewState)GetValue(LoadingStateProperty); }
+        set { SetValue(LoadingStateProperty, value); }
+    }
+
+    public SpecialFolderPreview()
+    {
+        InitializeComponent();
+    }
+
+    public Visibility IsVisibleIfStatesMatch(PreviewState? a, PreviewState? b) => VisibilityConverter.Convert(a == b);
+}

src/modules/peek/Peek.FilePreviewer/FilePreview.xaml

@@ -83,6 +83,12 @@
             Source="{x:Bind DrivePreviewer.Preview, Mode=OneWay}"
             Visibility="{x:Bind IsPreviewVisible(DrivePreviewer, Previewer.State), Mode=OneWay}" />
 
+        <controls:SpecialFolderPreview
+            x:Name="SpecialFolderPreview"
+            LoadingState="{x:Bind SpecialFolderPreviewer.State, Mode=OneWay}"
+            Source="{x:Bind SpecialFolderPreviewer.Preview, Mode=OneWay}"
+            Visibility="{x:Bind IsPreviewVisible(SpecialFolderPreviewer, Previewer.State), Mode=OneWay}" />
+
         <controls:UnsupportedFilePreview
             x:Name="UnsupportedFilePreview"
             LoadingState="{x:Bind UnsupportedFilePreviewer.State, Mode=OneWay}"

src/modules/peek/Peek.FilePreviewer/FilePreview.xaml.cs

@@ -53,6 +53,7 @@ namespace Peek.FilePreviewer
         [NotifyPropertyChangedFor(nameof(ArchivePreviewer))]
         [NotifyPropertyChangedFor(nameof(ShellPreviewHandlerPreviewer))]
         [NotifyPropertyChangedFor(nameof(DrivePreviewer))]
+        [NotifyPropertyChangedFor(nameof(SpecialFolderPreviewer))]
         [NotifyPropertyChangedFor(nameof(UnsupportedFilePreviewer))]
         private IPreviewer? previewer;
 
@@ -105,6 +106,8 @@ namespace Peek.FilePreviewer
 
         public IDrivePreviewer? DrivePreviewer => Previewer as IDrivePreviewer;
 
+        public ISpecialFolderPreviewer? SpecialFolderPreviewer => Previewer as ISpecialFolderPreviewer;
+
         public IUnsupportedFilePreviewer? UnsupportedFilePreviewer => Previewer as IUnsupportedFilePreviewer;
 
         public IFileSystemItem Item

src/modules/peek/Peek.FilePreviewer/Models/SpecialFolderPreviewData.cs

@@ -0,0 +1,26 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using CommunityToolkit.Mvvm.ComponentModel;
+using Microsoft.UI.Xaml.Media;
+
+namespace Peek.FilePreviewer.Models;
+
+public partial class SpecialFolderPreviewData : ObservableObject
+{
+    [ObservableProperty]
+    private ImageSource? iconPreview;
+
+    [ObservableProperty]
+    private string? fileName;
+
+    [ObservableProperty]
+    private string? fileType;
+
+    [ObservableProperty]
+    private string? fileSize;
+
+    [ObservableProperty]
+    private string? dateModified;
+}

src/modules/peek/Peek.FilePreviewer/Peek.FilePreviewer.csproj

@@ -21,6 +21,8 @@
     <None Remove="Controls\BrowserControl.xaml" />
     <None Remove="Controls\DriveControl.xaml" />
     <None Remove="Controls\ShellPreviewHandlerControl.xaml" />
+    <None Remove="Controls\SpecialFolderPreview\SpecialFolderInformationalPreviewControl.xaml" />
+    <None Remove="Controls\SpecialFolderPreview\SpecialFolderPreview.xaml" />
     <None Remove="Controls\UnsupportedFilePreview\FailedFallbackPreviewControl.xaml" />
     <None Remove="Controls\UnsupportedFilePreview\InformationalPreviewControl.xaml" />
     <None Remove="FilePreview.xaml" />
@@ -42,6 +44,27 @@
       </PackageReference>
   </ItemGroup>
 
+  <ItemGroup>
+    <COMReference Include="Shell32">
+      <VersionMinor>0</VersionMinor>
+      <VersionMajor>1</VersionMajor>
+      <Guid>50a7e9b0-70ef-11d1-b75a-00a0c90564fe</Guid>
+      <Lcid>0</Lcid>
+      <WrapperTool>tlbimp</WrapperTool>
+      <Isolated>false</Isolated>
+      <EmbedInteropTypes>true</EmbedInteropTypes>
+    </COMReference>
+    <COMReference Include="SHDocVw">
+      <VersionMinor>1</VersionMinor>
+      <VersionMajor>1</VersionMajor>
+      <Guid>eab22ac0-30c1-11cf-a7eb-0000c05bae0b</Guid>
+      <Lcid>0</Lcid>
+      <WrapperTool>tlbimp</WrapperTool>
+      <Isolated>false</Isolated>
+      <EmbedInteropTypes>true</EmbedInteropTypes>
+    </COMReference>
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\..\..\common\Common.UI\Common.UI.csproj" />
     <ProjectReference Include="..\..\..\common\FilePreviewCommon\FilePreviewCommon.csproj" />
@@ -71,6 +94,9 @@
     <Page Update="Controls\ArchiveControl.xaml">
       <Generator>MSBuild:Compile</Generator>
     </Page>
+    <Page Update="Controls\SpecialFolderPreview\SpecialFolderInformationalPreviewControl.xaml">
+      <Generator>MSBuild:Compile</Generator>
+    </Page>
   </ItemGroup>
 
   <ItemGroup>

src/modules/peek/Peek.FilePreviewer/Previewers/Interfaces/ISpecialFolderPreviewer.cs

@@ -0,0 +1,12 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using Peek.FilePreviewer.Models;
+
+namespace Peek.FilePreviewer.Previewers;
+
+public interface ISpecialFolderPreviewer : IPreviewer
+{
+    public SpecialFolderPreviewData? Preview { get; }
+}

src/modules/peek/Peek.FilePreviewer/Previewers/PreviewerFactory.cs

@@ -53,6 +53,10 @@ namespace Peek.FilePreviewer.Previewers
             {
                 return new DrivePreviewer(item);
             }
+            else if (SpecialFolderPreviewer.IsItemSupported(item))
+            {
+                return new SpecialFolderPreviewer(item);
+            }
 
             // Other previewer types check their supported file types here
             return CreateDefaultPreviewer(item);

src/modules/peek/Peek.FilePreviewer/Previewers/SpecialFolderPreviewer/Helpers/KnownSpecialFolders.cs

@@ -0,0 +1,58 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Peek.Common;
+using Peek.Common.Models;
+
+namespace Peek.FilePreviewer.Previewers;
+
+public enum KnownSpecialFolder
+{
+    None,
+    RecycleBin,
+}
+
+public static class KnownSpecialFolders
+{
+    private static readonly Lazy<IReadOnlyDictionary<string, KnownSpecialFolder>> FoldersByParsingNameDict = new(GetFoldersByParsingName);
+
+    public static IReadOnlyDictionary<string, KnownSpecialFolder> FoldersByParsingName => FoldersByParsingNameDict.Value;
+
+    private static Dictionary<string, KnownSpecialFolder> GetFoldersByParsingName()
+    {
+        var folders = new (KnownSpecialFolder Folder, string? ParsingName)[]
+        {
+            (KnownSpecialFolder.RecycleBin, GetParsingName("shell:RecycleBinFolder")),
+        };
+
+        return folders.Where(folder => !string.IsNullOrEmpty(folder.ParsingName))
+                      .ToDictionary(folder => folder.ParsingName!, folder => folder.Folder);
+    }
+
+    private static string? GetParsingName(string shellName)
+    {
+        try
+        {
+            return CreateShellItemFromShellName(shellName)?.GetDisplayName(Windows.Win32.UI.Shell.SIGDN.SIGDN_DESKTOPABSOLUTEPARSING);
+        }
+        catch (Exception)
+        {
+            return null;
+        }
+    }
+
+    private static IShellItem? CreateShellItemFromShellName(string shellName)
+    {
+        // Based on https://stackoverflow.com/a/42966899
+        const string ShellItem = "43826d1e-e718-42ee-bc55-a1e261c37bfe";
+
+        Guid shellItem2Guid = new(ShellItem);
+        int retCode = NativeMethods.SHCreateItemFromParsingName(shellName, IntPtr.Zero, ref shellItem2Guid, out IShellItem? nativeShellItem);
+
+        return retCode == 0 ? nativeShellItem : null;
+    }
+}

src/modules/peek/Peek.FilePreviewer/Previewers/SpecialFolderPreviewer/SpecialFolderPreviewer.cs

@@ -0,0 +1,215 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.IO;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using CommunityToolkit.Mvvm.ComponentModel;
+using ManagedCommon;
+using Microsoft.UI.Dispatching;
+using Microsoft.UI.Xaml;
+using Microsoft.UI.Xaml.Media.Imaging;
+using Peek.Common.Extensions;
+using Peek.Common.Helpers;
+using Peek.Common.Models;
+using Peek.FilePreviewer.Models;
+using Peek.FilePreviewer.Previewers.Helpers;
+using Windows.Foundation;
+
+namespace Peek.FilePreviewer.Previewers;
+
+public partial class SpecialFolderPreviewer : ObservableObject, ISpecialFolderPreviewer, IDisposable
+{
+    private readonly DispatcherTimer _syncDetailsDispatcherTimer = new();
+    private ulong _folderSize;
+    private DateTime? _dateModified;
+
+    [ObservableProperty]
+    private SpecialFolderPreviewData preview = new();
+
+    [ObservableProperty]
+    private PreviewState state;
+
+    public SpecialFolderPreviewer(IFileSystemItem file)
+    {
+        _syncDetailsDispatcherTimer.Interval = TimeSpan.FromMilliseconds(500);
+        _syncDetailsDispatcherTimer.Tick += DetailsDispatcherTimer_Tick;
+
+        Item = file;
+        Preview.FileName = file.Name;
+        Dispatcher = DispatcherQueue.GetForCurrentThread();
+    }
+
+    public static bool IsItemSupported(IFileSystemItem item)
+    {
+        // Always allow know special folders.
+        bool isKnownSpecialFolder = KnownSpecialFolders.FoldersByParsingName.ContainsKey(item.ParsingName);
+
+        // Allow empty paths unless Unc; icons don't load correctly for Unc paths.
+        bool isEmptyNonUncPath = string.IsNullOrEmpty(item.Path) && !PathHelper.IsUncPath(item.ParsingName);
+
+        return isKnownSpecialFolder || isEmptyNonUncPath;
+    }
+
+    private IFileSystemItem Item { get; }
+
+    private DispatcherQueue Dispatcher { get; }
+
+    public void Dispose()
+    {
+        _syncDetailsDispatcherTimer.Tick -= DetailsDispatcherTimer_Tick;
+        GC.SuppressFinalize(this);
+    }
+
+    public Task<PreviewSize> GetPreviewSizeAsync(CancellationToken cancellationToken)
+    {
+        Size? size = new(680, 500);
+        var previewSize = new PreviewSize { MonitorSize = size, UseEffectivePixels = true };
+        return Task.FromResult(previewSize);
+    }
+
+    public async Task LoadPreviewAsync(CancellationToken cancellationToken)
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+
+        State = PreviewState.Loading;
+
+        var tasks = await Task.WhenAll(LoadIconPreviewAsync(cancellationToken), LoadDisplayInfoAsync(cancellationToken));
+
+        State = tasks.All(task => task) ? PreviewState.Loaded : PreviewState.Error;
+    }
+
+    public async Task CopyAsync()
+    {
+        await Dispatcher.RunOnUiThread(async () =>
+        {
+            var storageItem = await Item.GetStorageItemAsync();
+            ClipboardHelper.SaveToClipboard(storageItem);
+        });
+    }
+
+    public async Task<bool> LoadIconPreviewAsync(CancellationToken cancellationToken)
+    {
+        bool isIconValid = false;
+
+        var isTaskSuccessful = await TaskExtension.RunSafe(async () =>
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+
+            await Dispatcher.RunOnUiThread(async () =>
+            {
+                cancellationToken.ThrowIfCancellationRequested();
+
+                var iconBitmap = await IconHelper.GetIconAsync(Item.ParsingName, cancellationToken);
+
+                cancellationToken.ThrowIfCancellationRequested();
+
+                isIconValid = iconBitmap != null;
+                Preview.IconPreview = iconBitmap ?? new SvgImageSource(new Uri("ms-appx:///Assets/Peek/DefaultFileIcon.svg"));
+            });
+        });
+
+        return isIconValid && isTaskSuccessful;
+    }
+
+    public async Task<bool> LoadDisplayInfoAsync(CancellationToken cancellationToken)
+    {
+        bool isDisplayValid = false;
+
+        var isTaskSuccessful = await TaskExtension.RunSafe(async () =>
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+
+            var fileType = await Task.Run(Item.GetContentTypeAsync);
+
+            cancellationToken.ThrowIfCancellationRequested();
+
+            isDisplayValid = fileType != null;
+
+            await Dispatcher.RunOnUiThread(() =>
+            {
+                Preview.FileType = fileType;
+                return Task.CompletedTask;
+            });
+
+            RunUpdateDetailsWorkflow(cancellationToken);
+        });
+
+        return isDisplayValid && isTaskSuccessful;
+    }
+
+    private void RunUpdateDetailsWorkflow(CancellationToken cancellationToken)
+    {
+        Task.Run(
+            async () =>
+            {
+                try
+                {
+                    await Dispatcher.RunOnUiThread(_syncDetailsDispatcherTimer.Start);
+                    ComputeDetails(cancellationToken);
+                }
+                catch (OperationCanceledException)
+                {
+                }
+                catch (Exception ex)
+                {
+                    Logger.LogError("Failed to update special folder details", ex);
+                }
+                finally
+                {
+                    await Dispatcher.RunOnUiThread(_syncDetailsDispatcherTimer.Stop);
+                }
+
+                await Dispatcher.RunOnUiThread(SyncDetails);
+            },
+            cancellationToken);
+    }
+
+    private void ComputeDetails(CancellationToken cancellationToken)
+    {
+        _dateModified = Item.DateModified;
+
+        switch (KnownSpecialFolders.FoldersByParsingName.GetValueOrDefault(Item.ParsingName, KnownSpecialFolder.None))
+        {
+            case KnownSpecialFolder.None:
+                break;
+
+            case KnownSpecialFolder.RecycleBin:
+                ThreadHelper.RunOnSTAThread(() => { ComputeRecycleBinDetails(cancellationToken); });
+                cancellationToken.ThrowIfCancellationRequested();
+                break;
+        }
+    }
+
+    private void ComputeRecycleBinDetails(CancellationToken cancellationToken)
+    {
+        var shell = new Shell32.Shell();
+        var recycleBin = shell.NameSpace(10); // CSIDL_BITBUCKET
+
+        foreach (dynamic item in recycleBin.Items())
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            _folderSize += Convert.ToUInt64(item.Size);
+        }
+    }
+
+    private void SyncDetails()
+    {
+        Preview.FileSize = _folderSize == 0 ? string.Empty : ReadableStringHelper.BytesToReadableString(_folderSize);
+        Preview.DateModified = _dateModified?.ToString(CultureInfo.CurrentCulture) ?? string.Empty;
+    }
+
+    private void DetailsDispatcherTimer_Tick(object? sender, object e)
+    {
+        SyncDetails();
+    }
+}

src/modules/peek/Peek.FilePreviewer/Previewers/UnsupportedFilePreviewer/UnsupportedFilePreviewer.cs

@@ -45,8 +45,6 @@ namespace Peek.FilePreviewer.Previewers
             Dispatcher = DispatcherQueue.GetForCurrentThread();
         }
 
-        public bool IsPreviewLoaded => Preview.IconPreview != null;
-
         private IFileSystemItem Item { get; }
 
         private DispatcherQueue Dispatcher { get; }

src/modules/peek/Peek.UI/Extensions/IShellItemExtensions.cs

@@ -7,49 +7,41 @@ using System.IO;
 using ManagedCommon;
 using Peek.Common.Models;
 
-namespace Peek.UI.Extensions
+namespace Peek.UI.Extensions;
+
+public static class IShellItemExtensions
 {
-    public static class IShellItemExtensions
+    public static IFileSystemItem ToIFileSystemItem(this IShellItem shellItem)
     {
-        public static IFileSystemItem ToIFileSystemItem(this IShellItem shellItem)
-        {
-            string path = shellItem.GetPath();
-            string name = shellItem.GetName();
+        string path = shellItem.GetPath();
+        string name = shellItem.GetName();
 
-            return File.Exists(path) ? new FileItem(path, name) : new FolderItem(path, name);
+        return File.Exists(path) ? new FileItem(path, name) : new FolderItem(path, name, shellItem.GetParsingName());
+    }
+
+    private static string GetPath(this IShellItem shellItem) =>
+        shellItem.GetNameCore(Windows.Win32.UI.Shell.SIGDN.SIGDN_FILESYSPATH, logError: false);
+
+    private static string GetName(this IShellItem shellItem) =>
+        shellItem.GetNameCore(Windows.Win32.UI.Shell.SIGDN.SIGDN_NORMALDISPLAY, logError: true);
+
+    private static string GetParsingName(this IShellItem shellItem) =>
+        shellItem.GetNameCore(Windows.Win32.UI.Shell.SIGDN.SIGDN_DESKTOPABSOLUTEPARSING, logError: true);
+
+    private static string GetNameCore(this IShellItem shellItem, Windows.Win32.UI.Shell.SIGDN displayNameType, bool logError)
+    {
+        try
+        {
+            return shellItem.GetDisplayName(displayNameType);
         }
-
-        private static string GetPath(this IShellItem shellItem)
+        catch (Exception ex)
         {
-            string path = string.Empty;
-            try
+            if (logError)
             {
-                path = shellItem.GetDisplayName(Windows.Win32.UI.Shell.SIGDN.SIGDN_FILESYSPATH);
-            }
-            catch (Exception ex)
-            {
-                // TODO: Handle cases that do not have a file system path like Recycle Bin.
-                path = string.Empty;
-                Logger.LogError("Getting path failed. " + ex.Message);
+                Logger.LogError($"Getting {Enum.GetName(displayNameType)} failed. {ex.Message}");
             }
 
-            return path;
-        }
-
-        private static string GetName(this IShellItem shellItem)
-        {
-            string name = string.Empty;
-            try
-            {
-                name = shellItem.GetDisplayName(Windows.Win32.UI.Shell.SIGDN.SIGDN_NORMALDISPLAY);
-            }
-            catch (Exception ex)
-            {
-                name = string.Empty;
-                Logger.LogError("Getting path failed. " + ex.Message);
-            }
-
-            return name;
+            return string.Empty;
         }
     }
 }