Various updates.

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;
+    }
 }