Enhance the App Manager

Sources/Linaris/App.xaml.cs

@@ -1,43 +1,40 @@
 using Model.Serialization;
 using Model.Stub;
-using Model;
 
 namespace Linaris;
 
 public partial class App : Application
 {
-    static IDataManager DataManager = new LinqXmlSerialization();
-
-    public static Manager Manager = new Manager(DataManager);
+    public Manager Manager = new(new LinqXmlSerialization());
 
     public App()
-	{
-		InitializeComponent();
-		MainPage = new AppShell();
-	}
+    {
+        InitializeComponent();
+        MainPage = new AppShell();
+    }
 
     protected override Window CreateWindow(IActivationState activationState)
     {
-		var Window = base.CreateWindow(activationState);
+        var Window = base.CreateWindow(activationState);
 
-		Window.Stopped += (sender, eventArgs) => {
-			Manager.SaveSerialization();
-		};
+        Window.Stopped += (sender, eventArgs) => {
+            Manager.SaveSerialization();
+        };
 
-		const int newHeight = 900;
-		const int newWidth = 1800;
-		const int minHeight = 800;
-		const int minWidth = 400;
+        const int newHeight = 900;
+        const int newWidth = 1800;
+        const int minHeight = 800;
+        const int minWidth = 400;
 
-		Window.X = 0;
-		Window.Y = 100;
+        Window.X = 0;
+        Window.Y = 100;
 
-		Window.Width = newWidth;
-		Window.Height = newHeight;
+        Window.Width = newWidth;
+        Window.Height = newHeight;
 
-		Window.MinimumHeight = minHeight;
-		Window.MinimumWidth = minWidth;
+        Window.MinimumHeight = minHeight;
+        Window.MinimumWidth = minWidth;
 
-		return Window;
+        return Window;
     }
 }

Sources/Linaris/LocalFilesPage.xaml.cs

@@ -9,14 +9,14 @@ namespace Linaris
 {
     public partial class LocalFilesPage : ContentPage
     {
-        private ObservableCollection<CustomTitle> customTitles = App.Manager.GetCustomTitles();
+        private ObservableCollection<CustomTitle> customTitles = (Application.Current as App).Manager.GetCustomTitles();
 
         public ObservableCollection<CustomTitle> CustomTitles
         {
             get => customTitles;
         }
 
-        private ObservableCollection<Playlist> playlists = App.Manager.GetPlaylists();
+        private ObservableCollection<Playlist> playlists = (Application.Current as App).Manager.GetPlaylists();
 
         public ObservableCollection<Playlist> Playlists
         {
@@ -69,7 +69,7 @@ namespace Linaris
 
         void AddCustomTitle(CustomTitle customTitle)
         {
-            App.Manager.AddCustomTitle(customTitle);
+            (Application.Current as App).Manager.AddCustomTitle(customTitle);
             customTitles.Add(customTitle);
             ResetAll(this, null);
         }
@@ -128,7 +128,7 @@ namespace Linaris
                 Playlist playlist = new Playlist(entry.Text, "", "none.png");
                 if (!IsInPlaylists(playlist))
                 {
-                    App.Manager.AddPlaylist(playlist);
+                    (Application.Current as App).Manager.AddPlaylist(playlist);
                     playlists.Add(playlist);
                 }
                 if(entry.BindingContext is CustomTitle customTitle)
@@ -148,7 +148,7 @@ namespace Linaris
             {
                 if (button.BindingContext is CustomTitle titleToRemove)
                 {
-                    App.Manager.RemoveCustomTitle(titleToRemove);
+                    (Application.Current as App).Manager.RemoveCustomTitle(titleToRemove);
                     customTitles.Remove(titleToRemove);
                 }
             }

Sources/Linaris/MainPage.xaml.cs

@@ -5,7 +5,7 @@ namespace Linaris;
 
 public partial class MainPage : ContentPage
 {
-	private ObservableCollection<Album> albums = App.Manager.GetAlbums();
+	private ObservableCollection<Album> albums = (Application.Current as App).Manager.GetAlbums();
 
 	public ObservableCollection<Album> Albums
 	{

Sources/Linaris/PlaylistsPage.xaml.cs

@@ -7,7 +7,7 @@ namespace Linaris;
 public partial class PlaylistsPage : ContentPage
 {
 
-    private ObservableCollection<Playlist> playlists = App.Manager.GetPlaylists();
+    private ObservableCollection<Playlist> playlists = (Application.Current as App).Manager.GetPlaylists();
 
     public ObservableCollection<Playlist> Playlists
     {
@@ -75,7 +75,7 @@ public partial class PlaylistsPage : ContentPage
             if (!HasSameName(entry.Text))
             {
                 Playlist playlist = new Playlist(entry.Text, "", "none.png");
-                App.Manager.AddPlaylist(playlist);
+                (Application.Current as App).Manager.AddPlaylist(playlist);
                 playlists.Add(playlist);
                 IsNewPlaylist = false;
             }
@@ -91,7 +91,7 @@ public partial class PlaylistsPage : ContentPage
         {
             if (button.BindingContext is Playlist playlist)
             {
-                App.Manager.RemovePlaylist(playlist);
+                (Application.Current as App).Manager.RemovePlaylist(playlist);
                 playlists.Remove(playlist);
             }
         }