Various updates.

Harmonia.Core/Caching/MemoryCache.cs

@@ -1,4 +1,5 @@
 using Microsoft.Extensions.Caching.Memory;
+using Microsoft.Extensions.Options;
 
 namespace Harmonia.Core.Caching;
 
@@ -27,10 +28,16 @@ public abstract class MemoryCache<TKey, TValue> : Cache<TKey, TValue> where TKey
 
         var cacheEntryOptions = new MemoryCacheEntryOptions()
             .SetSize(entrySize)
-            .SetSlidingExpiration(SlidingExpiration);
+            .SetSlidingExpiration(SlidingExpiration)
+            .RegisterPostEvictionCallback(PostEvictionCallback);
 
         _memoryCache.Set(key, entry, cacheEntryOptions);
     }
 
+    protected virtual void PostEvictionCallback(object? cacheKey, object? cacheValue, EvictionReason evictionReason, object? state)
+    {
+
+    }
+
     protected abstract long GetEntrySize(TValue entry);
 }

Harmonia.Core/Harmonia.Core.csproj

@@ -7,12 +7,12 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="ManagedBass" Version="3.1.1" />
+    <PackageReference Include="ManagedBass" Version="4.0.2" />
-    <PackageReference Include="ManagedBass.Flac" Version="3.1.1" />
+    <PackageReference Include="ManagedBass.Flac" Version="4.0.2" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="9.0.3" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="9.0.9" />
-    <PackageReference Include="Microsoft.Extensions.Caching.Abstractions" Version="9.0.3" />
+    <PackageReference Include="Microsoft.Extensions.Caching.Abstractions" Version="9.0.9" />
-    <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="9.0.3" />
+    <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="9.0.9" />
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="9.0.3" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="9.0.9" />
     <PackageReference Include="System.Text.RegularExpressions" Version="4.3.1" />
     <PackageReference Include="TagLibSharp" Version="2.3.0" />
   </ItemGroup>

Harmonia.Core/Models/Song.cs

@@ -23,4 +23,26 @@ public class Song
     public string? FileDirectory => Directory.GetParent(FileName)?.Name;
     public string? FileType => Path.GetExtension(FileName)?.Replace(".", "").ToUpper();
     public string ShortFileName => Path.GetFileNameWithoutExtension(FileName);
+
+    public void Update(Song song)
+    {
+        if (string.Equals(song.FileName, FileName, StringComparison.OrdinalIgnoreCase) == false)
+            return;
+
+        Size = song.Size;
+        LastModified = song.LastModified;
+        Title = song.Title;
+        Album = song.Album;
+        Artists = song.Artists;
+        AlbumArtists = song.AlbumArtists;
+        DiscNumber = song.DiscNumber;
+        TrackNumber = song.TrackNumber;
+        Length = song.Length;
+        Year = song.Year;
+        Genre = song.Genre;
+        BitRate = song.BitRate;
+        SampleRate = song.SampleRate;
+        ImageName = song?.ImageName;
+        ImageHash = song?.ImageHash;
+    }
 }

Harmonia.Core/Playlists/Playlist.cs

@@ -172,6 +172,7 @@ public class Playlist
             foreach (PlaylistSong playlistSong in playlistSongs)
             {
                 //playlistSong.Song = song;
+                //playlistSong.Song.Update(song);
             }
         }
     }

Harmonia.Tests/Harmonia.Tests.csproj

@@ -16,14 +16,14 @@
 			<PrivateAssets>all</PrivateAssets>
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 		</PackageReference>
-		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
+		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.0" />
 		<PackageReference Include="NSubstitute" Version="5.3.0" />
 		<PackageReference Include="Shouldly" Version="4.3.0" />
-		<PackageReference Include="xunit.runner.visualstudio" Version="3.0.2">
+		<PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
 			<PrivateAssets>all</PrivateAssets>
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 		</PackageReference>
-		<PackageReference Include="xunit.v3" Version="2.0.0" />
+		<PackageReference Include="xunit.v3" Version="3.1.0" />
 	</ItemGroup>
 
 	<ItemGroup>

Harmonia.UI.Desktop/Harmonia.UI.Desktop.csproj

@@ -10,7 +10,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Avalonia.Desktop" Version="11.2.6" />
+    <PackageReference Include="Avalonia.Desktop" Version="11.3.7" />
   </ItemGroup>
 
   <ItemGroup>

Harmonia.UI/Harmonia.UI.csproj

@@ -11,15 +11,15 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Avalonia" Version="11.2.6" />
+    <PackageReference Include="Avalonia" Version="11.3.7" />
-    <PackageReference Include="Avalonia.Themes.Fluent" Version="11.2.6" />
+    <PackageReference Include="Avalonia.Themes.Fluent" Version="11.3.7" />
-    <PackageReference Include="Avalonia.Fonts.Inter" Version="11.2.6" />
+    <PackageReference Include="Avalonia.Fonts.Inter" Version="11.3.7" />
     <PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.0" />
 
     <!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
-    <PackageReference Condition="'$(Configuration)' == 'Debug'" Include="Avalonia.Diagnostics" Version="11.2.6" />
+    <PackageReference Condition="'$(Configuration)' == 'Debug'" Include="Avalonia.Diagnostics" Version="11.3.7" />
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="9.0.3" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="9.0.9" />
-    <PackageReference Include="Semi.Avalonia" Version="11.2.1.6" />
+    <PackageReference Include="Semi.Avalonia" Version="11.3.7" />
   </ItemGroup>
 
   <ItemGroup>

Harmonia.WinUI/Caching/AudioBitmapImageCache.cs

@@ -2,8 +2,10 @@
 using Harmonia.Core.Imaging;
 using Harmonia.Core.Models;
 using Microsoft.Extensions.Caching.Memory;
+using Microsoft.UI.Dispatching;
 using Microsoft.UI.Xaml.Media.Imaging;
 using System;
+using System.Collections.Concurrent;
 using System.IO;
 using System.Threading;
 using System.Threading.Tasks;
@@ -100,3 +102,127 @@ public class AudioBitmapImageCache(IAudioImageExtractor audioImageExtractor) : M
         return entry.DecodePixelWidth * entry.DecodePixelHeight;
     }
 }
+
+
+public class AudioBitmapImageCache2 : MemoryCache<Song, BitmapImage>, IAudioBitmapImageCache
+{
+    private readonly IAudioImageExtractor _audioImageExtractor;
+    private readonly BitmapImage[] _bitmapPool;
+    private int _nextIndex = 0;
+    private ConcurrentDictionary<object, BitmapImage> _test = [];
+
+    protected override MemoryCacheOptions Options => new()
+    {
+        SizeLimit = 200_000_000,
+        CompactionPercentage = 0.2,
+    };
+
+    protected override TimeSpan SlidingExpiration => TimeSpan.FromSeconds(600);
+    protected override int MaxConcurrentRequests => 8;
+    protected virtual int MaxImageWidthOrHeight => 1000;
+    protected virtual int BitmapPoolSize => 64;
+
+    public AudioBitmapImageCache2(IAudioImageExtractor audioImageExtractor)
+    {
+        _audioImageExtractor = audioImageExtractor;
+        _bitmapPool = new BitmapImage[BitmapPoolSize];
+
+        InitializeBitmapPool();
+    }
+
+    private void InitializeBitmapPool()
+    {
+        for (int i = 0; i < _bitmapPool.Length; i++)
+            _bitmapPool[i] = new BitmapImage();
+
+        //DispatcherQueue dispatcherQueue = DispatcherQueue.GetForCurrentThread();
+
+        //TaskCompletionSource taskCompletionSource = new();
+
+        //dispatcherQueue.TryEnqueue(() =>
+        //{
+        //    for (int i = 0; i < _bitmapPool.Length; i++)
+        //        _bitmapPool[i] = new BitmapImage();
+
+        //    taskCompletionSource.SetResult();
+        //});
+
+        //taskCompletionSource.Task.GetAwaiter().GetResult();
+    }
+
+    protected override object? GetKey(Song key)
+    {
+        if (string.IsNullOrWhiteSpace(key.ImageHash) == false)
+        {
+            return key.ImageHash;
+        }
+        else if (string.IsNullOrWhiteSpace(key.ImageName) == false)
+        {
+            return key.ImageName;
+        }
+
+        return "Default";
+    }
+
+    protected override async ValueTask<BitmapImage?> FetchAsync(Song key, CancellationToken cancellationToken)
+    {
+        int index = Interlocked.Increment(ref _nextIndex);
+        BitmapImage bitmapImage = _bitmapPool[index % _bitmapPool.Length];
+        //_test.AddOrUpdate(index, bitmapImage);
+
+        SongPictureInfo? songPictureInfo = await _audioImageExtractor.ExtractImageAsync(key.FileName, cancellationToken);
+
+        if (songPictureInfo == null)
+        {
+            bitmapImage.UriSource = new("ms-appx:///Assets/Default.png", UriKind.Absolute);
+        }
+        else
+        {
+            using MemoryStream stream = new(songPictureInfo.Data);
+            await bitmapImage.SetSourceAsync(stream.AsRandomAccessStream());
+        }
+
+        bitmapImage.DecodePixelWidth = GetDecodePixelWidth(bitmapImage);
+        bitmapImage.DecodePixelHeight = GetDecodePixelHeight(bitmapImage);
+
+        return bitmapImage;
+    }
+
+    private int GetDecodePixelWidth(BitmapImage bitmapImage)
+    {
+        int originalImageWidth = bitmapImage.PixelWidth;
+        int orignalImageHeight = bitmapImage.PixelHeight;
+
+        if (originalImageWidth <= MaxImageWidthOrHeight && orignalImageHeight <= MaxImageWidthOrHeight)
+            return 0;
+
+        if (orignalImageHeight > originalImageWidth)
+            return 0;
+
+        return MaxImageWidthOrHeight;
+    }
+
+    private int GetDecodePixelHeight(BitmapImage bitmapImage)
+    {
+        int originalImageWidth = bitmapImage.PixelWidth;
+        int orignalImageHeight = bitmapImage.PixelHeight;
+
+        if (originalImageWidth <= MaxImageWidthOrHeight && orignalImageHeight <= MaxImageWidthOrHeight)
+            return 0;
+
+        if (originalImageWidth > orignalImageHeight)
+            return 0;
+
+        return MaxImageWidthOrHeight;
+    }
+
+    protected override long GetEntrySize(BitmapImage entry)
+    {
+        return entry.DecodePixelWidth * entry.DecodePixelHeight;
+    }
+
+    protected override void PostEvictionCallback(object? cacheKey, object? cacheValue, EvictionReason evictionReason, object? state)
+    {
+        
+    }
+}

Harmonia.WinUI/Flex/IFlexView.cs

@@ -0,0 +1,76 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Harmonia.WinUI.Flex;
+
+public interface IFlexView
+{
+    FlexLayout Layout { get; }
+    int ImageWidth { get; }
+    FlexOrientation ListOrientation { get; }
+    int RowSpacing { get; }
+    int ColumnSpacing { get; }
+    int TextLineHeight { get; }
+    FlexOrientation SubtitleFooterOrientation { get; }
+    int SubtitleFooterMargin { get; }
+    FlexOrientation ImageToTextOrientation { get; }
+    int TitleFontSize { get; }
+    int SubtitleFontSize { get; }
+    int FooterFontSize { get; }
+}
+
+public abstract class GridFlexViewBase : IFlexView
+{
+    public FlexLayout Layout => FlexLayout.Grid;
+    public FlexOrientation ListOrientation => FlexOrientation.Horizontal;
+    public FlexOrientation SubtitleFooterOrientation => FlexOrientation.Vertical;
+    public FlexOrientation ImageToTextOrientation => FlexOrientation.Vertical;
+
+    public abstract int ImageWidth { get; }
+    public abstract int RowSpacing { get; }
+    public abstract int ColumnSpacing { get; }
+    public abstract int TextLineHeight { get; }
+    public abstract int SubtitleFooterMargin { get; }
+    public abstract int TitleFontSize { get; }
+    public abstract int SubtitleFontSize { get; }
+    public abstract int FooterFontSize { get; }
+}
+
+public abstract class ListFlexViewBase : IFlexView
+{
+    public FlexLayout Layout => FlexLayout.List;
+    public FlexOrientation ListOrientation => FlexOrientation.Vertical;
+    public FlexOrientation SubtitleFooterOrientation => FlexOrientation.Vertical;
+    public FlexOrientation ImageToTextOrientation => FlexOrientation.Vertical;
+
+    public abstract int ImageWidth { get; }
+
+    public abstract int RowSpacing { get; }
+
+    public abstract int ColumnSpacing { get; }
+
+    public abstract int TextLineHeight { get; }
+
+    public abstract int SubtitleFooterMargin { get; }
+
+    public abstract int TitleFontSize { get; }
+
+    public abstract int SubtitleFontSize { get; }
+
+    public abstract int FooterFontSize { get; }
+}
+
+public enum FlexLayout
+{
+    List,
+    Grid
+}
+
+public enum FlexOrientation
+{
+    Horizontal,
+    Vertical
+}

Harmonia.WinUI/Harmonia.WinUI.csproj

@@ -43,9 +43,9 @@
 	</ItemGroup>
 	<ItemGroup>
 		<PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.0" />
-		<PackageReference Include="CommunityToolkit.WinUI.Media" Version="8.1.240916" />
+		<PackageReference Include="CommunityToolkit.WinUI.Media" Version="8.2.250402" />
-		<PackageReference Include="Microsoft.Windows.SDK.BuildTools" Version="10.0.26100.1742" />
+		<PackageReference Include="Microsoft.Windows.SDK.BuildTools" Version="10.0.26100.6584" />
-		<PackageReference Include="Microsoft.WindowsAppSDK" Version="1.7.250310001" />
+		<PackageReference Include="Microsoft.WindowsAppSDK" Version="1.8.250916003" />
 	</ItemGroup>
 	<ItemGroup>
 	  <ProjectReference Include="..\Harmonia.Core\Harmonia.Core.csproj" />

Harmonia.WinUI/Resources/Styles.xaml

@@ -5,19 +5,19 @@
 
     <!-- Global Font -->
     <Style TargetType="TextBlock">
-        <Setter Property="FontFamily" Value="Lexend" />
+        <Setter Property="FontFamily" Value="Lexend,Noto Sans JP" />
     </Style>
 
     <Style TargetType="TextBox" BasedOn="{StaticResource DefaultTextBoxStyle}">
-        <Setter Property="FontFamily" Value="Lexend" />
+        <Setter Property="FontFamily" Value="Lexend,Noto Sans JP" />
     </Style>
 
     <Style TargetType="MenuFlyoutItem" BasedOn="{StaticResource DefaultMenuFlyoutItemStyle}">
-        <Setter Property="FontFamily" Value="Lexend" />
+        <Setter Property="FontFamily" Value="Lexend,Noto Sans JP" />
     </Style>
 
     <Style TargetType="ListViewItem" BasedOn="{StaticResource DefaultListViewItemStyle}">
-        <Setter Property="FontFamily" Value="Lexend" />
+        <Setter Property="FontFamily" Value="Lexend,Noto Sans JP" />
     </Style>
 
     <!-- Flat Button -->

Harmonia.WinUI/ViewModels/PlayingSongViewModel.cs

@@ -9,7 +9,7 @@ using System.Threading.Tasks;
 
 namespace Harmonia.WinUI.ViewModels;
 
-public class PlayingSongViewModel : ViewModelBase
+public partial class PlayingSongViewModel : ViewModelBase
 {
     private readonly IAudioPlayer _audioPlayer;
     private readonly IAudioBitmapImageCache _audioBitmapImageCache;

Harmonia.WinUI/ViewModels/PlaylistViewModel.cs

@@ -1,5 +1,7 @@
 using CommunityToolkit.Mvvm.Input;
+using Harmonia.Core.Caching;
 using Harmonia.Core.Engine;
+using Harmonia.Core.Imaging;
 using Harmonia.Core.Models;
 using Harmonia.Core.Player;
 using Harmonia.Core.Playlists;
@@ -8,10 +10,10 @@ using Harmonia.WinUI.Caching;
 using Harmonia.WinUI.Storage;
 using Microsoft.UI.Xaml.Media.Imaging;
 using System;
-using System.Collections;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
+using System.Collections.Specialized;
 using System.Diagnostics;
 using System.IO;
 using System.Linq;
@@ -20,7 +22,6 @@ using System.Threading;
 using System.Threading.Tasks;
 using System.Timers;
 using System.Windows.Input;
-using Windows.ApplicationModel.Contacts;
 using Windows.ApplicationModel.DataTransfer;
 using DispatcherQueue = Microsoft.UI.Dispatching.DispatcherQueue;
 using Timer = System.Timers.Timer;
@@ -30,6 +31,7 @@ namespace Harmonia.WinUI.ViewModels;
 public partial class PlaylistViewModel : ViewModelBase
 {
     private readonly IAudioPlayer _audioPlayer;
+    private readonly IAudioImageCache _audioImageCache;
     private readonly IAudioBitmapImageCache _audioBitmapImageCache;
     private readonly IAudioFileScanner _audioFileScanner;
     private readonly IAudioEngine _audioEngine;
@@ -126,6 +128,7 @@ public partial class PlaylistViewModel : ViewModelBase
 
     public PlaylistViewModel(
         IAudioPlayer audioPlayer,
+        IAudioImageCache audioImageCache,
         IAudioBitmapImageCache audioBitmapImageCache,
         IAudioFileScanner audioFileScanner,
         IAudioEngine audioEngine,
@@ -136,16 +139,27 @@ public partial class PlaylistViewModel : ViewModelBase
         _audioPlayer.PlaylistChanged += OnPlaylistChanged;
         _audioPlayer.PlayingSongChanged += OnPlayingSongChanged;
 
+        _audioImageCache = audioImageCache;
         _audioBitmapImageCache = audioBitmapImageCache;
         _audioFileScanner = audioFileScanner;
         _audioEngine = audioEngine;
         _storageProvider = storageProvider;
         _dispatcherQueue = DispatcherQueue.GetForCurrentThread();
 
+        FilteredPlaylistSongs.CollectionChanged += OnFilteredPlaylistSongsCollectionChanged;
+
         // Testing
         Task.Run(() => PlayDemoSong(playlistRepository));
     }
 
+    private void OnFilteredPlaylistSongsCollectionChanged(object? sender, NotifyCollectionChangedEventArgs e)
+    {
+        if (IsUserUpdating == false)
+            return;
+
+        int x = 1;
+    }
+
     private async Task PlayDemoSong(IPlaylistRepository playlistRepository)
     {
         if (playlistRepository.Get().Count == 0)
@@ -238,13 +252,24 @@ public partial class PlaylistViewModel : ViewModelBase
         await _audioPlayer.LoadAsync(playlistSong, PlaybackMode.LoadAndPlay);
     }
 
+    public async Task<SongPictureInfo?> GetSongPictureInfoAsync(int hashCode, PlaylistSong playlistSong)
+    {
+        _imageCancellationTokens.TryGetValue(hashCode, out CancellationTokenSource? cancellationTokenSource);
+        cancellationTokenSource?.Cancel();
+
+        cancellationTokenSource = new();
+        _imageCancellationTokens.AddOrUpdate(hashCode, cancellationTokenSource, (_, _) => cancellationTokenSource);
+
+        return await _audioImageCache.GetAsync(playlistSong.Song, cancellationTokenSource.Token);
+    }
+
     public async Task<BitmapImage?> GetBitmapImageAsync(int hashCode, PlaylistSong playlistSong)
     {
         _imageCancellationTokens.TryGetValue(hashCode, out CancellationTokenSource? cancellationTokenSource);
         cancellationTokenSource?.Cancel();
 
         cancellationTokenSource = new();
-        _imageCancellationTokens.AddOrUpdate(hashCode, cancellationTokenSource, (_,_) => cancellationTokenSource);
+        _imageCancellationTokens.AddOrUpdate(hashCode, cancellationTokenSource, (_, _) => cancellationTokenSource);
 
         return await _audioBitmapImageCache.GetAsync(playlistSong.Song, cancellationTokenSource.Token);
     }
@@ -290,7 +315,7 @@ public partial class PlaylistViewModel : ViewModelBase
         List<PlaylistSong> filteredPlaylistSongs = [.. Playlist.Songs.Where(playlistSong => IsFiltered(playlistSong.Song))];
         //FilteredPlaylistSongs = [.. filteredPlaylistSongs];
 
-        for (int i = FilteredPlaylistSongs.Count -1; i >= 0; i--)
+        for (int i = FilteredPlaylistSongs.Count - 1; i >= 0; i--)
         {
             PlaylistSong playlistSong = FilteredPlaylistSongs[i];
 
@@ -382,7 +407,7 @@ public partial class PlaylistViewModel : ViewModelBase
 
     private FilePickerFileType GetAudioFileTypes()
     {
-        string[] patterns = _audioEngine.SupportedFormats.Select(format => format.Replace("*", "")).ToArray();
+        string[] patterns = [.. _audioEngine.SupportedFormats.Select(format => format.Replace("*", ""))];
 
         return new()
         {
@@ -396,7 +421,7 @@ public partial class PlaylistViewModel : ViewModelBase
         if (Playlist == null)
             return;
 
-       string? path = await _storageProvider.GetPathAsync();
+        string? path = await _storageProvider.GetPathAsync();
 
         if (string.IsNullOrWhiteSpace(path))
             return;

Harmonia.WinUI/Views/PlaylistView.xaml

@@ -184,6 +184,11 @@
             Name="PlaylistListView"
             ItemsSource="{Binding FilteredPlaylistSongs}"
             ItemTemplate="{StaticResource SongTemplate}"
+            CanReorderItems="True"
+            CanDragItems="True"
+            DragItemsStarting="PlaylistListView_DragItemsStarting"
+            DragItemsCompleted="PlaylistListView_DragItemsCompleted"
+            AllowDrop="True"
             SelectionMode="Extended"
             SelectionChanged="PlaylistListView_SelectionChanged">
             <ListView.ContextFlyout>

Harmonia.WinUI/Views/PlaylistView.xaml.cs

@@ -1,4 +1,5 @@
 using CommunityToolkit.WinUI;
+using Harmonia.Core.Imaging;
 using Harmonia.Core.Playlists;
 using Harmonia.WinUI.ViewModels;
 using Microsoft.UI.Dispatching;
@@ -12,6 +13,7 @@ using System;
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Linq;
+using System.Threading.Tasks;
 using Windows.UI.Popups;
 
 namespace Harmonia.WinUI.Views;
@@ -179,6 +181,7 @@ public sealed partial class PlaylistView : UserControl
     {
         int hashCode = image.GetHashCode();
         //BitmapImage? bitmapImage = await _viewModel.GetBitmapImageAsync(hashCode, playlistSong);
+        //SongPictureInfo? songPictureInfo = await _viewModel.GetSongPictureInfoAsync(hashCode, playlistSong);
 
         DispatcherQueue.TryEnqueue(DispatcherQueuePriority.Low, async () =>
         {
@@ -248,4 +251,14 @@ public sealed partial class PlaylistView : UserControl
             }
         }
     }
+
+    private void PlaylistListView_DragItemsStarting(object sender, DragItemsStartingEventArgs e)
+    {
+        _viewModel.IsUserUpdating = true;
+    }
+
+    private void PlaylistListView_DragItemsCompleted(ListViewBase sender, DragItemsCompletedEventArgs args)
+    {
+        _viewModel.IsUserUpdating = false;
+    }
 }