DYN-9078: Node context menu chevron doesn't change color on hover (#17124)

Co-authored-by: Cursor Agent <cursoragent@cursor.com>
Co-authored-by: Ivo Petrov <ivaylo-matov@users.noreply.github.com>

Author: ivaylo-matov

src/DynamoCoreWpf/UI/Themes/Modern/DynamoModern.xaml

@@ -4114,8 +4114,12 @@
                         </Trigger>
                         <Trigger Property="IsMouseOver" Value="True">
                             <Setter TargetName="ContentPresenter" Property="TextBlock.Foreground" Value="White" />
+                            <Setter TargetName="subMenuArrow" Property="Foreground" Value="White" />
                             <Setter TargetName="dockPanel" Property="Background" Value="{StaticResource GenericMouseOverBackgroundColorBrush}" />
                         </Trigger>
+                        <Trigger Property="IsSubmenuOpen" Value="True">
+                            <Setter TargetName="subMenuArrow" Property="Foreground" Value="White" />
+                        </Trigger>
                         <Trigger Property="IsMouseOver" Value="False">
                             <Setter TargetName="dockPanel" Property="Background" Value="{StaticResource NodeContextMenuBackground}" />
                         </Trigger>
@@ -4211,8 +4215,12 @@
                         </Trigger>
                         <Trigger Property="IsMouseOver" Value="True">
                             <Setter TargetName="ContentPresenter" Property="TextBlock.Foreground" Value="White" />
+                            <Setter TargetName="subMenuArrow" Property="Foreground" Value="White" />
                             <Setter TargetName="dockPanel" Property="Background" Value="{StaticResource GenericMouseOverBackgroundColorBrush}" />
                         </Trigger>
+                        <Trigger Property="IsSubmenuOpen" Value="True">
+                            <Setter TargetName="subMenuArrow" Property="Foreground" Value="White" />
+                        </Trigger>
                         <Trigger Property="IsMouseOver" Value="False">
                             <Setter TargetName="dockPanel" Property="Background" Value="{StaticResource GenericBorderBackgroundColorBrush}" />
                         </Trigger>
@@ -4311,8 +4319,12 @@
                         </Trigger>
                         <Trigger Property="IsMouseOver" Value="True">
                             <Setter TargetName="ContentPresenter" Property="TextBlock.Foreground" Value="White" />
+                            <Setter TargetName="subMenuArrow" Property="Foreground" Value="White" />
                             <Setter TargetName="dockPanel" Property="Background" Value="{StaticResource NodeContextMenuBackgroundHighlight}" />
                         </Trigger>
+                        <Trigger Property="IsSubmenuOpen" Value="True">
+                            <Setter TargetName="subMenuArrow" Property="Foreground" Value="White" />
+                        </Trigger>
                         <Trigger Property="IsMouseOver" Value="False">
                             <Setter TargetName="dockPanel" Property="Background" Value="{StaticResource NodeContextMenuBackground}" />
                         </Trigger>
@@ -5745,8 +5757,12 @@
                         </Trigger>
                         <Trigger Property="IsMouseOver" Value="True">
                             <Setter TargetName="ContentPresenter" Property="TextBlock.Foreground" Value="White" />
+                            <Setter TargetName="subMenuArrow" Property="Foreground" Value="White" />
                             <Setter TargetName="dockPanel" Property="Background" Value="{StaticResource NodeContextMenuBackgroundHighlight}" />
                         </Trigger>
+                        <Trigger Property="IsSubmenuOpen" Value="True">
+                            <Setter TargetName="subMenuArrow" Property="Foreground" Value="White" />
+                        </Trigger>
                         <Trigger Property="IsMouseOver" Value="False">
                             <Setter TargetName="dockPanel" Property="Background" Value="{StaticResource NodeContextMenuBackground}" />
                         </Trigger>

src/DynamoCoreWpf/Views/Core/AnnotationView.xaml.cs

@@ -2007,6 +2007,7 @@ private Grid CreateSubmenuItem(string label, Func<UIElement> submenuContentFacto
                 Foreground = _blue300Brush,
                 VerticalAlignment = VerticalAlignment.Center,
                 HorizontalAlignment = HorizontalAlignment.Right,
+                RenderTransformOrigin = new Point(0.5, 0.5),
                 RenderTransform = new ScaleTransform(1, 1.5)
             };
 
@@ -2041,6 +2042,7 @@ private Grid CreateSubmenuItem(string label, Func<UIElement> submenuContentFacto
                 popup.PlacementTarget = border;
                 popup.IsOpen = true;
                 border.Background = _nodeContextMenuBackgroundHighlight;
+                arrow.Foreground = Brushes.White;
             };
 
             border.MouseLeave += (s, e) =>
@@ -2050,6 +2052,7 @@ private Grid CreateSubmenuItem(string label, Func<UIElement> submenuContentFacto
                 {
                     popup.IsOpen = false;
                     border.Background = Brushes.Transparent;
+                    arrow.Foreground = _blue300Brush;
                 }
             };
 

src/DynamoCoreWpf/Views/Core/NodeView.xaml.cs

@@ -2384,6 +2384,7 @@ private static ContextMenu GetNodeContextMenu()
                 Value = true
             };
             isMouseOverTrueTrigger.Setters.Add(new Setter(TextBlock.ForegroundProperty, Brushes.White, "ContentPresenter"));
+            isMouseOverTrueTrigger.Setters.Add(new Setter(Control.ForegroundProperty, Brushes.White, "subMenuArrow"));
             isMouseOverTrueTrigger.Setters.Add(new Setter(DockPanel.BackgroundProperty, nodeContextMenuBackgroundHighlight, "dockPanel"));
 
             // Trigger for IsMouseOver property (false)

src/DynamoCoreWpf/Views/Core/WorkspaceView.xaml

@@ -507,8 +507,12 @@
                                     </Trigger>
                                     <Trigger Property="IsMouseOver" Value="True">
                                         <Setter TargetName="ContentPresenter" Property="TextBlock.Foreground" Value="White" />
+                                        <Setter TargetName="subMenuArrow" Property="Foreground" Value="White" />
                                         <Setter TargetName="dockPanel" Property="Background" Value="{StaticResource NodeContextMenuBackgroundHighlight}" />
                                     </Trigger>
+                                    <Trigger Property="IsSubmenuOpen" Value="True">
+                                        <Setter TargetName="subMenuArrow" Property="Foreground" Value="White" />
+                                    </Trigger>
                                     <Trigger Property="IsMouseOver" Value="False">
                                         <Setter TargetName="dockPanel" Property="Background" Value="{StaticResource NodeContextMenuBackground}" />
                                     </Trigger>