From b0db727426e4971421ce39e5846957e5ed4f7a75 Mon Sep 17 00:00:00 2001
From: Rusty Burchfield <GICodeWarrior@gmail.com>
Date: Thu, 16 Mar 2023 11:56:40 -0700
Subject: [PATCH] Enable TreeView UI Virtualization

---
 FModel/MainWindow.xaml                | 2 +-
 FModel/Views/Resources/Resources.xaml | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/FModel/MainWindow.xaml b/FModel/MainWindow.xaml
index f5d533a2..8db158ff 100644
--- a/FModel/MainWindow.xaml
+++ b/FModel/MainWindow.xaml
@@ -327,7 +327,7 @@
                                 </StackPanel>
                             </Grid>
                             <Separator Grid.Row="1" Style="{StaticResource CustomSeparator}" Margin="0" />
-                            <TreeView Grid.Row="2" x:Name="AssetsFolderName" Style="{StaticResource AssetsFolderTreeView}" PreviewMouseDoubleClick="OnAssetsTreeMouseDoubleClick">
+                            <TreeView Grid.Row="2" x:Name="AssetsFolderName" Style="{StaticResource AssetsFolderTreeView}" PreviewMouseDoubleClick="OnAssetsTreeMouseDoubleClick" VirtualizingStackPanel.IsVirtualizing="True" VirtualizingStackPanel.VirtualizationMode="Recycling" ScrollViewer.CanContentScroll="True">
                                 <TreeView.ContextMenu>
                                     <ContextMenu>
                                         <MenuItem Header="Extract Folder's Packages" Click="OnFolderExtractClick">
diff --git a/FModel/Views/Resources/Resources.xaml b/FModel/Views/Resources/Resources.xaml
index 3d03acd8..7ccdc433 100644
--- a/FModel/Views/Resources/Resources.xaml
+++ b/FModel/Views/Resources/Resources.xaml
@@ -247,7 +247,7 @@
     </Style>
 
     <Style x:Key="AssetsFolderTreeView" TargetType="TreeView" BasedOn="{StaticResource {x:Type TreeView}}">
-        <Setter Property="ItemsSource" Value="{Binding CUE4Parse.AssetsFolder.FoldersView, IsAsync=True}" />
+        <Setter Property="ItemsSource" Value="{Binding CUE4Parse.AssetsFolder.FoldersView}" />
         <Setter Property="adonisExtensions:ScrollViewerExtension.VerticalScrollBarExpansionMode" Value="NeverExpand"/>
         <Setter Property="adonisExtensions:ScrollViewerExtension.VerticalScrollBarPlacement" Value="Docked"/>
         <Setter Property="adonisExtensions:ScrollViewerExtension.HorizontalScrollBarExpansionMode" Value="NeverExpand"/>
@@ -255,7 +255,7 @@
         <Setter Property="HorizontalContentAlignment" Value="Stretch" />
         <Setter Property="ItemTemplate">
             <Setter.Value>
-                <HierarchicalDataTemplate ItemsSource="{Binding FoldersView, IsAsync=True}">
+                <HierarchicalDataTemplate ItemsSource="{Binding FoldersView}">
                     <StackPanel Orientation="Horizontal">
                         <Image x:Name="TreeImage" Source="/FModel;component/Resources/folder.png"
                                Width="16" Height="16" HorizontalAlignment="Center" Margin="0 0 3.5 0" />