From 827333b2d2df2c56ccf53840e66e74fce3e870a1 Mon Sep 17 00:00:00 2001
From: Ruofan <zrfcfgs@outlook.com>
Date: Mon, 25 May 2026 11:06:33 +0800
Subject: [PATCH 1/2] Add children transitions for the SettingsExpander

Better visual effect when some of the items visibility within SettingsExpander changed
---
 .../src/SettingsExpander/SettingsExpander.xaml              | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/components/SettingsControls/src/SettingsExpander/SettingsExpander.xaml b/components/SettingsControls/src/SettingsExpander/SettingsExpander.xaml
index bfc0cde77..babf79604 100644
--- a/components/SettingsControls/src/SettingsExpander/SettingsExpander.xaml
+++ b/components/SettingsControls/src/SettingsExpander/SettingsExpander.xaml
@@ -102,6 +102,12 @@
                                         <RowDefinition Height="*" />
                                         <RowDefinition Height="Auto" />
                                     </Grid.RowDefinitions>
+                                    <Grid.ChildrenTransitions>
+                                        <TransitionCollection>
+                                            <ContentThemeTransition />
+                                            <AddDeleteThemeTransition />
+                                        </TransitionCollection>
+                                    </Grid.ChildrenTransitions>
                                     <ContentPresenter Content="{TemplateBinding ItemsHeader}" />
                                     <muxc:ItemsRepeater x:Name="PART_ItemsRepeater"
                                                         Grid.Row="1"

From 5e0384fd103bb9d8cd4a56a1f310b27843da7807 Mon Sep 17 00:00:00 2001
From: Ruofan <zrfcfgs@outlook.com>
Date: Mon, 25 May 2026 16:28:06 +0800
Subject: [PATCH 2/2] Make a new property ItemsTransitions to config the
 transitions more flexible

---
 .../SettingsExpander.Properties.cs             | 18 ++++++++++++++++++
 .../src/SettingsExpander/SettingsExpander.xaml |  9 ++-------
 2 files changed, 20 insertions(+), 7 deletions(-)

diff --git a/components/SettingsControls/src/SettingsExpander/SettingsExpander.Properties.cs b/components/SettingsControls/src/SettingsExpander/SettingsExpander.Properties.cs
index 7ddd2efcb..9362f8658 100644
--- a/components/SettingsControls/src/SettingsExpander/SettingsExpander.Properties.cs
+++ b/components/SettingsControls/src/SettingsExpander/SettingsExpander.Properties.cs
@@ -71,6 +71,15 @@ public partial class SettingsExpander
      typeof(SettingsExpander),
      new PropertyMetadata(defaultValue: false, (d, e) => ((SettingsExpander)d).OnIsExpandedPropertyChanged((bool)e.OldValue, (bool)e.NewValue)));
 
+    /// <summary>
+    /// The backing <see cref="DependencyProperty"/> for the <see cref="ItemsTransitions"/> property.
+    /// </summary>
+    public static readonly DependencyProperty ItemsTransitionsProperty = DependencyProperty.Register(
+        nameof(ItemsTransitions), 
+        typeof(TransitionCollection), 
+        typeof(SettingsExpander),
+        new PropertyMetadata(null));
+
     /// <summary>
     /// Gets or sets the Header.
     /// </summary>
@@ -127,6 +136,15 @@ public UIElement ItemsFooter
         set => SetValue(ItemsFooterProperty, value);
     }
 
+    /// <summary>
+    /// Gets or sets the ItemsTransitions.
+    /// </summary>
+    public TransitionCollection ItemsTransitions
+    {
+        get { return (TransitionCollection)GetValue(ItemsTransitionsProperty); }
+        set { SetValue(ItemsTransitionsProperty, value); }
+    }
+
     /// <summary>
     /// Gets or sets the IsExpanded state.
     /// </summary>
diff --git a/components/SettingsControls/src/SettingsExpander/SettingsExpander.xaml b/components/SettingsControls/src/SettingsExpander/SettingsExpander.xaml
index babf79604..2bc870c8c 100644
--- a/components/SettingsControls/src/SettingsExpander/SettingsExpander.xaml
+++ b/components/SettingsControls/src/SettingsExpander/SettingsExpander.xaml
@@ -96,18 +96,13 @@
                                                     IsClickEnabled="False" />
                             </muxc:Expander.Header>
                             <muxc:Expander.Content>
-                                <Grid CornerRadius="{Binding CornerRadius, Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource CornerRadiusConverter}}">
+                                <Grid ChildrenTransitions="{TemplateBinding ItemsTransitions}"
+                                      CornerRadius="{Binding CornerRadius, Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource CornerRadiusConverter}}">
                                     <Grid.RowDefinitions>
                                         <RowDefinition Height="Auto" />
                                         <RowDefinition Height="*" />
                                         <RowDefinition Height="Auto" />
                                     </Grid.RowDefinitions>
-                                    <Grid.ChildrenTransitions>
-                                        <TransitionCollection>
-                                            <ContentThemeTransition />
-                                            <AddDeleteThemeTransition />
-                                        </TransitionCollection>
-                                    </Grid.ChildrenTransitions>
                                     <ContentPresenter Content="{TemplateBinding ItemsHeader}" />
                                     <muxc:ItemsRepeater x:Name="PART_ItemsRepeater"
                                                         Grid.Row="1"