Initial commit

PcgsInvUi/ViewModels/MainWindowViewModel.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Reactive.Linq;
+using PcgsInvUi.Models;
+using PcgsInvUi.Services;
+using ReactiveUI;
+
+namespace PcgsInvUi.ViewModels;
+
+public class MainWindowViewModel : ViewModelBase
+{
+    public CoinListViewModel List { get; }
+    private ViewModelBase _content;
+    
+    public MainWindowViewModel(CoinCollection coins)
+    {
+        List = new CoinListViewModel(coins.GetItems());
+        Content = List;
+    }
+    
+    public ViewModelBase Content
+    {
+        get => _content;
+        private set => this.RaiseAndSetIfChanged(ref _content, value);
+    }
+
+    public void AddItem()
+    {
+        Console.WriteLine("You hit the button!");
+        var newViewModel = new NewViewModel();
+
+        Observable.Merge(
+                newViewModel.OkCommand,
+                newViewModel.CancelCommand.Select(_ => (Coin?)null))
+            .Take(1)
+            .Subscribe(model =>
+            {
+                if (model != null)
+                    List.CoinCollection.Add(model);
+
+                Content = List;
+            });
+        
+        Content = newViewModel;
+    }
+}