- tweak: Big refactoring of hub and file content overview

Nebula.Launcher/Controls/ServerListView.axaml.cs

@@ -0,0 +1,104 @@
+using Avalonia.Controls;
+using Nebula.Launcher.ServerListProviders;
+using Nebula.Launcher.ViewModels;
+using Nebula.Launcher.ViewModels.Pages;
+
+namespace Nebula.Launcher.Controls;
+
+public partial class ServerListView : UserControl
+{
+    private IServerListProvider _provider = default!;
+    private ServerFilter? _currentFilter;
+    
+    public bool IsLoading { get; private set; }
+    
+    public ServerListView()
+    {
+        InitializeComponent();
+    }
+
+    public static ServerListView TakeFrom(IServerListProvider provider)
+    {
+        var serverListView = new ServerListView();
+        if (provider is IServerListDirtyInvoker invoker)
+        {
+            invoker.Dirty += serverListView.OnDirty;
+        }
+        serverListView._provider = provider;
+        serverListView.RefreshFromProvider();
+        return serverListView;
+    }
+
+    public void RefreshFromProvider()
+    {
+        if (IsLoading) 
+            return;
+        
+        Clear();
+        StartLoading();
+        
+        _provider.LoadServerList();
+        
+        if (_provider.IsLoaded) PasteServersFromList();
+        else _provider.OnLoaded += RefreshRequired;
+    }
+
+    public void ApplyFilter(ServerFilter? filter)
+    {
+        _currentFilter = filter;
+        
+        if(IsLoading) 
+            return;
+        
+        foreach (IFilterConsumer? serverView in ServerList.Items)
+        {
+            serverView?.ProcessFilter(filter);
+        }
+    }
+
+    private void OnDirty()
+    {
+        RefreshFromProvider();
+    }
+    
+    private void Clear()
+    {
+        ErrorList.Items.Clear();
+        ServerList.Items.Clear();
+    }
+    
+    private void PasteServersFromList()
+    {
+        foreach (var serverEntry in _provider.GetServers())
+        {
+            ServerList.Items.Add(serverEntry);
+            serverEntry.ProcessFilter(_currentFilter);
+        }
+        
+        foreach (var error in _provider.GetErrors())
+        {
+            ErrorList.Items.Add(error);
+        }
+        
+        EndLoading();
+    }
+    
+    private void RefreshRequired()
+    {
+        PasteServersFromList();
+        _provider.OnLoaded -= RefreshRequired;
+    }
+
+    private void StartLoading()
+    {
+        Clear();
+        IsLoading = true;
+        LoadingLabel.IsVisible = true;
+    }
+
+    private void EndLoading()
+    {
+        IsLoading = false;
+        LoadingLabel.IsVisible = false;
+    }
+}