Move ProcessQueueViewModel logic into LibationUiBase

Fix UI bug in classic when queue is in popped-out mode.

Source/LibationWinForms/ProcessQueue/ProcessQueueViewModel.cs

@@ -0,0 +1,74 @@
+using DataLayer;
+using LibationUiBase.ProcessQueue;
+using System;
+using System.Collections;
+using System.Collections.ObjectModel;
+using System.Collections.Specialized;
+using System.ComponentModel;
+using System.Linq;
+
+#nullable enable
+namespace LibationWinForms.ProcessQueue;
+
+internal class ProcessQueueViewModel : ProcessQueueViewModelBase
+{
+	public event EventHandler<string>? LogWritten;
+	/// <summary>
+	/// Fires when a ProcessBookViewModelBase in the queue has a property changed
+	/// </summary>
+	public event EventHandler<PropertyChangedEventArgs>? BookPropertyChanged;
+	private ObservableCollection<ProcessBookViewModelBase> Items { get; }
+
+	public ProcessQueueViewModel() : base(CreateEmptyList())
+	{
+		Items = Queue.UnderlyingList as ObservableCollection<ProcessBookViewModelBase>
+			?? throw new ArgumentNullException(nameof(Queue.UnderlyingList));
+		Items.CollectionChanged += Items_CollectionChanged;
+	}
+
+	private void Items_CollectionChanged(object? sender, NotifyCollectionChangedEventArgs e)
+	{
+		switch  (e.Action)
+		{
+			case NotifyCollectionChangedAction.Add:
+				subscribe(e.NewItems);
+				break;
+			case NotifyCollectionChangedAction.Remove:
+				unubscribe(e.OldItems);
+				break;
+		}
+
+		void subscribe(IList? items)
+		{
+			foreach (var item in e.NewItems?.OfType<ProcessBookViewModel>() ?? [])
+				item.PropertyChanged += Item_PropertyChanged;
+		}
+
+		void unubscribe(IList? items)
+		{
+			foreach (var item in e.NewItems?.OfType<ProcessBookViewModel>() ?? [])
+				item.PropertyChanged -= Item_PropertyChanged;
+		}
+	}
+
+	private void Item_PropertyChanged(object? sender, PropertyChangedEventArgs e)
+		=> BookPropertyChanged?.Invoke(sender, e);
+
+	public override void WriteLine(string text) => Invoke(() => LogWritten?.Invoke(this, text.Trim()));
+
+	protected override ProcessBookViewModelBase CreateNewBook(LibraryBook libraryBook)
+		=> new ProcessBookViewModel(libraryBook, Logger);
+
+	private static ObservableCollection<ProcessBookViewModelBase> CreateEmptyList()
+		=> new ProcessBookCollection();
+
+	private class ProcessBookCollection : ObservableCollection<ProcessBookViewModelBase>
+	{
+		protected override void ClearItems()
+		{
+			//ObservableCollection doesn't raise Remove for each item on Clear, so we need to do it ourselves.
+			OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, this));
+			base.ClearItems();
+		}
+	}
+}