Mass rename project for rebranding

Wallet/ItemHeaderViewModel.cs

@@ -0,0 +1,74 @@
+using CommunityToolkit.Mvvm.ComponentModel;
+using Toolkit.Foundation;
+
+namespace Wallet;
+
+public partial class ItemHeaderViewModel : 
+    Observable<string, string>,
+    INotificationHandler<UpdateEventArgs<Item>>,
+    INotificationHandler<ConfirmEventArgs<Item>>,
+    INotificationHandler<CancelEventArgs<Item>>,
+    IHandler<ValidationEventArgs<ItemHeader>, bool>,
+    IHandler<ConfirmEventArgs<ItemHeader>, string?>,
+    INotificationHandler<NotifyEventArgs<ItemCategory<string>>>
+{
+    [ObservableProperty]
+    private string? category;
+
+    [ObservableProperty]
+    private ItemState state;
+
+    public ItemHeaderViewModel(IServiceProvider provider,
+        IServiceFactory factory,
+        IMediator mediator,
+        IPublisher publisher,
+        ISubscription subscriber,
+        IDisposer disposer,
+        ItemState state,
+        string key,
+        string value) : base(provider, factory, mediator, publisher, subscriber, disposer, key, value)
+    {
+        State = state;
+        Value = value;
+
+        Track(nameof(Value), () => Value, newValue => Value = newValue);
+    }
+
+    public Task<bool> Handle(ValidationEventArgs<ItemHeader> args,
+        CancellationToken cancellationToken)
+    {
+        return Task.FromResult(true);
+    }
+
+    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;
+    }
+
+    public Task Handle(NotifyEventArgs<ItemCategory<string>> args)
+    {
+        if (args.Value is ItemCategory<string> category)
+        {
+            Category = category.Value;
+        }
+
+        return Task.CompletedTask;
+    }
+
+    public Task<string> Handle(ConfirmEventArgs<ItemHeader> args,
+        CancellationToken cancellationToken) => Task.FromResult(Value);
+}