chore: use file-scoped namespace

src/Shared/HandyControl_Shared/Tools/StyleSelector/ComboBoxItemCapsuleStyleSelector.cs

@@ -2,29 +2,28 @@
 using System.Windows.Controls;
 using HandyControl.Data;
 
-namespace HandyControl.Tools
-{
-    public class ComboBoxItemCapsuleStyleSelector : StyleSelector
-    {
-        public override Style SelectStyle(object item, DependencyObject container)
-        {
-            if (container is ComboBoxItem comboBoxItem && VisualHelper.GetParent<ComboBox>(comboBoxItem) is { } comboBox)
-            {
-                var count = comboBox.Items.Count;
-                if (count == 1)
-                {
-                    return ResourceHelper.GetResourceInternal<Style>(ResourceToken.ComboBoxItemCapsuleSingle);
-                }
+namespace HandyControl.Tools;
 
-                var index = comboBox.ItemContainerGenerator.IndexFromContainer(comboBoxItem);
-                return index == 0
-                    ? ResourceHelper.GetResourceInternal<Style>(ResourceToken.ComboBoxItemCapsuleHorizontalFirst)
-                    : ResourceHelper.GetResourceInternal<Style>(index == count - 1
-                        ? ResourceToken.ComboBoxItemCapsuleHorizontalLast
-                        : ResourceToken.ComboBoxItemCapsuleDefault);
+public class ComboBoxItemCapsuleStyleSelector : StyleSelector
+{
+    public override Style SelectStyle(object item, DependencyObject container)
+    {
+        if (container is ComboBoxItem comboBoxItem && VisualHelper.GetParent<ComboBox>(comboBoxItem) is { } comboBox)
+        {
+            var count = comboBox.Items.Count;
+            if (count == 1)
+            {
+                return ResourceHelper.GetResourceInternal<Style>(ResourceToken.ComboBoxItemCapsuleSingle);
             }
 
-            return null;
+            var index = comboBox.ItemContainerGenerator.IndexFromContainer(comboBoxItem);
+            return index == 0
+                ? ResourceHelper.GetResourceInternal<Style>(ResourceToken.ComboBoxItemCapsuleHorizontalFirst)
+                : ResourceHelper.GetResourceInternal<Style>(index == count - 1
+                    ? ResourceToken.ComboBoxItemCapsuleHorizontalLast
+                    : ResourceToken.ComboBoxItemCapsuleDefault);
         }
+
+        return null;
     }
-}
+}