Attempt to bring back ListView.

Wino.Mail.ViewModels/Data/IMailListItem.cs

@@ -0,0 +1,25 @@
+using System;
+using Wino.Core.Domain.Interfaces;
+
+namespace Wino.Mail.ViewModels.Data;
+
+/// <summary>
+/// Common interface for mail items that can be displayed in a mail list.
+/// Implemented by both MailItemViewModel and ThreadMailItemViewModel.
+/// </summary>
+public interface IMailListItem : IMailHashContainer
+{
+    /// <summary>
+    /// Gets the latest creation date for sorting purposes.
+    /// For MailItemViewModel: the mail's creation date
+    /// For ThreadMailItemViewModel: the latest email's creation date
+    /// </summary>
+    DateTime CreationDate { get; }
+
+    /// <summary>
+    /// Gets the sender's name for grouping purposes.
+    /// For MailItemViewModel: the mail's from name
+    /// For ThreadMailItemViewModel: the latest email's from name
+    /// </summary>
+    string FromName { get; }
+}

Wino.Mail.ViewModels/Data/MailItemViewModel.cs

@@ -1,13 +1,17 @@
-using CommunityToolkit.Mvvm.ComponentModel;
+using System;
+using System.Collections.Generic;
+using CommunityToolkit.Mvvm.ComponentModel;
 using Wino.Core.Domain.Entities.Mail;
+using Wino.Core.Domain.Interfaces;
 
 namespace Wino.Mail.ViewModels.Data;
 
 /// <summary>
 /// Single view model for IMailItem representation.
 /// </summary>
-public partial class MailItemViewModel(MailCopy mailCopy) : ObservableObject
+public partial class MailItemViewModel(MailCopy mailCopy) : ObservableObject, IMailListItem
 {
+    public DateTime CreationDate => MailCopy.CreationDate;
     [ObservableProperty]
     public partial MailCopy MailCopy { get; set; } = mailCopy;
 
@@ -85,4 +89,6 @@ public partial class MailItemViewModel(MailCopy mailCopy) : ObservableObject
         get => MailCopy.HasAttachments;
         set => SetProperty(MailCopy.HasAttachments, value, MailCopy, (u, n) => u.HasAttachments = n);
     }
+
+    public IEnumerable<Guid> GetContainingIds() => [MailCopy.UniqueId];
 }

Wino.Mail.ViewModels/Data/ThreadMailItemViewModel.cs

@@ -2,13 +2,14 @@
 using System.Collections.Generic;
 using System.Linq;
 using CommunityToolkit.Mvvm.ComponentModel;
+using Wino.Core.Domain.Interfaces;
 
 namespace Wino.Mail.ViewModels.Data;
 
 /// <summary>
 /// Thread mail item (multiple IMailItem) view model representation.
 /// </summary>
-public partial class ThreadMailItemViewModel : ObservableRecipient, IDisposable
+public partial class ThreadMailItemViewModel : ObservableRecipient, IDisposable, IMailListItem
 {
     private readonly string _threadId;
 
@@ -30,21 +31,21 @@ public partial class ThreadMailItemViewModel : ObservableRecipient, IDisposable
     /// <summary>
     /// Gets the latest email's subject for display
     /// </summary>
-    public string? Subject => _threadEmails
+    public string Subject => _threadEmails
         .OrderByDescending(e => e.MailCopy?.CreationDate)
         .FirstOrDefault()?.MailCopy?.Subject;
 
     /// <summary>
     /// Gets the latest email's sender name for display
     /// </summary>
-    public string? FromName => _threadEmails
+    public string FromName => _threadEmails
         .OrderByDescending(e => e.MailCopy?.CreationDate)
         .FirstOrDefault()?.MailCopy?.SenderContact.Name;
 
     /// <summary>
     /// Gets the latest email's creation date for sorting
     /// </summary>
-    public DateTime LatestEmailDate => _threadEmails
+    public DateTime CreationDate => _threadEmails
         .OrderByDescending(e => e.MailCopy?.CreationDate)
         .FirstOrDefault()?.MailCopy?.CreationDate ?? DateTime.MinValue;
 
@@ -79,11 +80,11 @@ public partial class ThreadMailItemViewModel : ObservableRecipient, IDisposable
         GC.SuppressFinalize(this);
     }
 
-    private void NotifyPropertyChanges()
+    public void NotifyPropertyChanges()
     {
         OnPropertyChanged(nameof(Subject));
         OnPropertyChanged(nameof(FromName));
-        OnPropertyChanged(nameof(LatestEmailDate));
+        OnPropertyChanged(nameof(CreationDate));
         OnPropertyChanged(nameof(LatestMailViewModel));
     }
 
@@ -115,4 +116,6 @@ public partial class ThreadMailItemViewModel : ObservableRecipient, IDisposable
     /// Checks if this thread contains an email with the specified unique ID
     /// </summary>
     public bool HasUniqueId(Guid uniqueId) => _threadEmails.Any(email => email.MailCopy.UniqueId == uniqueId);
+
+    public IEnumerable<Guid> GetContainingIds() => ThreadEmails.Select(a => a.MailCopy.UniqueId);
 }