Parent's children, optimalizations

src/GuiApp/Avalonia/FileTime.GuiApp.App/Startup.cs

@@ -26,6 +26,7 @@ namespace FileTime.GuiApp
                 .AddSingleton<IGuiAppState, GuiAppState>(s => s.GetRequiredService<GuiAppState>())
                 .AddSingleton<DefaultModeKeyInputHandler>()
                 .AddSingleton<RapidTravelModeKeyInputHandler>()
+                .AddSingleton<IRxSchedulerService, AvaloniaRxSchedulerService>()
                 //TODO: move??
                 .AddTransient<ITab, Tab>()
                 .AddTransient<ITabViewModel, TabViewModel>()

src/GuiApp/Avalonia/FileTime.GuiApp/Services/AvaloniaRxSchedulerService.cs

@@ -0,0 +1,13 @@
+using System.Reactive.Concurrency;
+using FileTime.App.Core.Services;
+using ReactiveUI;
+
+namespace FileTime.GuiApp.Services
+{
+    public class AvaloniaRxSchedulerService : IRxSchedulerService
+    {
+        public IScheduler GetUIScheduler() => RxApp.MainThreadScheduler;
+
+        public IScheduler GetWorkerScheduler() => RxApp.TaskpoolScheduler;
+    }
+}

src/GuiApp/Avalonia/FileTime.GuiApp/Views/MainWindow.axaml

@@ -103,6 +103,23 @@
                                 <ColumnDefinition Width="45*" />
                             </Grid.ColumnDefinitions>
 
+                            <ListBox
+                                x:CompileBindings="False"
+                                AutoScrollToSelectedItem="True"
+                                Classes="ContentListView"
+                                IsTabStop="True"
+                                Items="{Binding AppState.SelectedTab^.ParentsChildren^}"
+                                ScrollViewer.HorizontalScrollBarVisibility="Hidden"
+                                ScrollViewer.VerticalScrollBarVisibility="Visible">
+                                <ListBox.ItemTemplate>
+                                    <DataTemplate x:DataType="corevm:IItemViewModel">
+                                        <local:ItemView
+                                            ShowAttributes="False"
+                                            HorizontalAlignment="Stretch"
+                                            HorizontalContentAlignment="Stretch" />
+                                    </DataTemplate>
+                                </ListBox.ItemTemplate>
+                            </ListBox>
 
                             <Rectangle
                                 Grid.Column="1"
@@ -112,7 +129,6 @@
                                 VerticalAlignment="Stretch"
                                 Fill="{DynamicResource ContentSeparatorBrush}" />
 
-
                             <Grid
                                 Grid.Column="2"
                                 RowDefinitions="Auto,*">