Added resource classses and a missing converter.

Harmonia.WinUI/ViewModels/PlaylistViewModel.cs

@@ -9,7 +9,6 @@ using Harmonia.WinUI.Storage;
 using Microsoft.UI.Dispatching;
 using Microsoft.UI.Xaml.Media.Imaging;
 using System;
-using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.Diagnostics;
@@ -21,7 +20,6 @@ using System.Threading.Tasks;
 using System.Timers;
 using System.Windows.Input;
 using Windows.ApplicationModel.DataTransfer;
-using Windows.Storage;
 using Timer = System.Timers.Timer;
 
 namespace Harmonia.WinUI.ViewModels;
@@ -116,6 +114,8 @@ public partial class PlaylistViewModel : ViewModelBase
     public ICommand RemoveMissingSongsCommand => new RelayCommand(RemoveMissingSongs);
     public ICommand RemoveDuplicateSongsCommand => new RelayCommand(RemoveDuplicateSongs);
 
+    public bool IsUserUpdating { get; set; }
+
     public PlaylistViewModel(
         IAudioPlayer audioPlayer,
         IAudioBitmapImageCache audioBitmapImageCache,
@@ -155,6 +155,9 @@ public partial class PlaylistViewModel : ViewModelBase
 
     private void OnPlaylistUpdated(object? sender, PlaylistUpdatedEventArgs e)
     {
+        if (IsUserUpdating)
+            return;
+
         switch (e.Action)
         {
             case PlaylistUpdateAction.Add:
@@ -191,7 +194,6 @@ public partial class PlaylistViewModel : ViewModelBase
 
     private void OnPlayingSongChanged(object? sender, EventArgs e)
     {
-        //OnPropertyChanged(nameof(PlayingSong));
         PlayingSong = _audioPlayer.PlayingSong;
     }
 

Harmonia.WinUI/ViewModels/ViewModelLocator.cs

@@ -0,0 +1,18 @@
+using Microsoft.Extensions.DependencyInjection;
+
+namespace Harmonia.WinUI.ViewModels;
+
+public class ViewModelLocator
+{
+    //public static MainViewModel MainViewModel
+    //    => App.ServiceProvider.GetRequiredService<MainViewModel>();
+
+    public static PlayerViewModel PlayerViewModel
+        => App.ServiceProvider.GetRequiredService<PlayerViewModel>();
+
+    //public static PlayingSongInfoViewModel PlayingSongInfoViewModel
+    //    => App.ServiceProvider.GetRequiredService<PlayingSongInfoViewModel>();
+
+    public static PlaylistViewModel PlaylistViewModel
+        => App.ServiceProvider.GetRequiredService<PlaylistViewModel>();
+}