ui(manager): improve search bindings

ModpackUpdater.Apps.Manager/Ui/Models/DynamicDataView.cs

@@ -0,0 +1,38 @@
+using System.Collections.ObjectModel;
+using System.ComponentModel;
+using System.Reactive.Linq;
+using System.Reactive.Subjects;
+using DynamicData;
+
+namespace ModpackUpdater.Apps.Manager.Ui.Models;
+
+public class DynamicDataView<T> : INotifyPropertyChanged where T : notnull
+{
+    public event PropertyChangedEventHandler? PropertyChanged;
+    
+    private string? searchText;
+    private readonly Subject<string?> searchTextSubject = new();
+
+    public SourceList<T> List { get; } = new();
+    public ReadOnlyObservableCollection<T> View { get; }
+    
+    public DynamicDataView(Func<string?, Func<T, bool>> predicate)
+    {
+        List.Connect()
+            .Filter(searchTextSubject/*.Throttle(TimeSpan.FromMilliseconds(250))*/.Select(predicate))
+            .Bind(out var view)
+            .Subscribe();
+        searchTextSubject?.OnNext(searchText);
+        View = view;
+    }
+
+    public string? SearchText
+    {
+        get => searchText;
+        set
+        {
+            searchText = value;
+            searchTextSubject.OnNext(value);
+        }
+    }
+}