Add files

src/Snap.Hutao/Snap.Hutao/Control/Helper/SettingsExpanderHelper.cs

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+// Copyright (c) DGP Studio. All rights reserved.
+// Licensed under the MIT license.
+
+using CommunityToolkit.WinUI.Controls;
+using Microsoft.UI.Xaml;
+
+namespace Snap.Hutao.Control.Helper;
+
+[SuppressMessage("", "SH001")]
+[DependencyProperty("IsItemsEnabled", typeof(bool), true, nameof(OnIsItemsEnabledChanged), IsAttached = true, AttachedType = typeof(SettingsExpander))]
+public sealed partial class SettingsExpanderHelper
+{
+    private static void OnIsItemsEnabledChanged(DependencyObject dp, DependencyPropertyChangedEventArgs e)
+    {
+        SettingsExpander expander = (SettingsExpander)dp;
+        foreach (SettingsCard item in expander.Items.Cast<SettingsCard>())
+        {
+            item.IsEnabled = (bool)e.NewValue;
+        }
+    }
+}