New list view items.

Wino.Mail.WinUI/Controls/ListView/WinoMailItemViewModelListViewItem.cs

@@ -1,86 +1,23 @@
-using CommunityToolkit.Mvvm.Messaging;
-using Microsoft.UI.Xaml;
+using CommunityToolkit.WinUI;
 using Microsoft.UI.Xaml.Controls;
 using Wino.Mail.ViewModels.Data;
-using Wino.Messaging.Client.Mails;
 
 namespace Wino.Mail.WinUI.Controls.ListView;
 
 public partial class WinoMailItemViewModelListViewItem : ListViewItem
 {
-    private readonly long _selectionChangeCallbackToken;
+    [GeneratedDependencyProperty]
+    public partial MailItemViewModel? Item { get; set; }
+
     public WinoMailItemViewModelListViewItem()
     {
         DefaultStyleKey = typeof(WinoMailItemViewModelListViewItem);
-
-        _selectionChangeCallbackToken = RegisterPropertyChangedCallback(IsSelectedProperty, OnIsSelectedChanged);
     }
 
     protected override void OnContentChanged(object oldContent, object newContent)
     {
         base.OnContentChanged(oldContent, newContent);
 
-        if (oldContent is MailItemViewModel oldMailItem)
-        {
-            UnregisterSelectionCallback(oldMailItem);
-        }
-
-        if (newContent is MailItemViewModel newMailItem)
-        {
-            IsSelected = newMailItem.IsSelected;
-            RegisterSelectionCallback(newMailItem);
-        }
-    }
-
-    public void Cleanup()
-    {
-        if (Content is MailItemViewModel mailItem)
-        {
-            UnregisterSelectionCallback(mailItem);
-
-            UnregisterPropertyChangedCallback(IsSelectedProperty, _selectionChangeCallbackToken);
-        }
-    }
-
-    private void UnregisterSelectionCallback(IMailListItem mailItem)
-    {
-        mailItem.PropertyChanged -= MailPropChanged;
-    }
-
-    private void RegisterSelectionCallback(IMailListItem mailItem)
-    {
-        mailItem.PropertyChanged -= MailPropChanged;
-        mailItem.PropertyChanged += MailPropChanged;
-    }
-
-    // From model
-    private void MailPropChanged(object? sender, System.ComponentModel.PropertyChangedEventArgs e)
-    {
-        if (sender is not MailItemViewModel mailItem) return;
-
-        if (e.PropertyName == nameof(MailItemViewModel.IsSelected)) ApplySelectionForContainer(mailItem);
-    }
-
-    // From container.
-    private void OnIsSelectedChanged(DependencyObject sender, DependencyProperty dp)
-    {
-        if (Content is IMailListItem mailItem)
-        {
-            ApplySelectionForModel(mailItem);
-        }
-    }
-
-    private void ApplySelectionForModel(IMailListItem mailItem)
-    {
-        mailItem.IsSelected = IsSelected;
-        WeakReferenceMessenger.Default.Send(new SelectedItemsChangedMessage());
-    }
-
-    private void ApplySelectionForContainer(IMailListItem mailItem)
-    {
-        if (IsSelected != mailItem.IsSelected)
-        {
-            IsSelected = mailItem.IsSelected;
-        }
+        if (newContent is MailItemViewModel mailItemViewModel) Item = mailItemViewModel;
     }
 }