It it now possible to create/edit item contents

Bitvault/ItemEntryViewModel.cs

@@ -1,4 +1,4 @@
-using System.ComponentModel;
+using CommunityToolkit.Mvvm.ComponentModel;
 using Toolkit.Foundation;
 
 namespace Bitvault;
@@ -13,7 +13,33 @@ public partial class ItemEntryViewModel(IServiceProvider provider,
     string? key = default,
     object? value = default) :
     Observable<string, object>(provider, factory, mediator, publisher, subscriber, disposer, key, value),
-    IItemEntryViewModel
+    IItemEntryViewModel,
+    INotificationHandler<UpdateEventArgs<Item>>,
+    INotificationHandler<ConfirmEventArgs<Item>>,
+    INotificationHandler<CancelEventArgs<Item>>
 {
-    protected override void OnValueChanged() => configuration.Value = Value;
+    [ObservableProperty]
+    private ItemState state = ItemState.Read;
+
+    protected override void OnValueChanged() => 
+        configuration.Value = Value;
+
+    public Task Handle(UpdateEventArgs<Item> args) =>
+        Task.FromResult(State = ItemState.Write);
+
+    public Task Handle(CancelEventArgs<Item> args)
+    {
+        Revert();
+
+        State = ItemState.Read;
+        return Task.CompletedTask;
+    }
+
+    public Task Handle(ConfirmEventArgs<Item> args)
+    {
+        Commit();
+
+        State = ItemState.Read;
+        return Task.CompletedTask;
+    }
 }