Fixed EditableListBoxControl mouse wheel scrolling

Filtration/Filtration.csproj

@@ -247,6 +247,7 @@
     <Compile Include="UserControls\ThemeComponentSelectionControl.xaml.cs">
       <DependentUpon>ThemeComponentSelectionControl.xaml</DependentUpon>
     </Compile>
+    <Compile Include="Utility\VisualTreeUtility.cs" />
     <Compile Include="ViewModels\DesignTime\DesignTimeItemFilterBlockViewModel.cs" />
     <Compile Include="ViewModels\DesignTime\DesignTimeSettingsPageViewModel.cs" />
     <Compile Include="Views\AttachedProperties\SelectedItemsAttachedProperty.cs" />

Filtration/Utility/VisualTreeUtility.cs

@@ -0,0 +1,26 @@
+using System.Windows;
+using System.Windows.Media;
+
+namespace Filtration.Utility
+{
+    public class VisualTreeUtility
+    {
+        public static T FindParent<T>(DependencyObject child)
+            where T : DependencyObject
+        {
+            //get parent item
+            var parentObject = VisualTreeHelper.GetParent(child);
+
+            //we've reached the end of the tree
+            if (parentObject == null) return null;
+
+            //check if the parent matches the type we're looking for
+            if (parentObject is T parent)
+            {
+                return parent;
+            }
+
+            return FindParent<T>(parentObject);
+        }
+    }
+}

Filtration/Views/ItemFilterBlockView.xaml.cs

@@ -2,6 +2,8 @@
 using System.Windows.Controls;
 using System.Windows.Input;
 using System.Windows.Media;
+using Filtration.UserControls;
+using Filtration.Utility;
 
 namespace Filtration.Views
 {
@@ -41,6 +43,14 @@ namespace Filtration.Views
             // up and down in ItemFilterScriptView rather than within the block.
             if (sender is ScrollViewer viewer && !e.Handled)
             {
+                // Don't handle events if they originated from a control within an EditableListBoxControl
+                // since we still want to allow scrolling within those with the mouse wheel
+                if (e.OriginalSource is DependencyObject dependencyObject && VisualTreeUtility.FindParent<EditableListBoxControl>(dependencyObject) != null)
+                {
+                    e.Handled = false;
+                    return;
+                }
+
                 e.Handled = true;
 
                 var eventArg = new MouseWheelEventArgs(e.MouseDevice, e.Timestamp, e.Delta) {RoutedEvent = MouseWheelEvent, Source = viewer};