From 3b55342f5ab0d4dc734a75272d75f34781491112 Mon Sep 17 00:00:00 2001
From: Andrew KeepCoding <andrewkeepcoding@gmail.com>
Date: Thu, 13 Feb 2025 11:57:15 +0900
Subject: [PATCH] Fix auto-scrolling issue on the TabView page

---
 .../Samples/ControlPages/TabViewPage.xaml     |  6 +++++-
 .../Samples/ControlPages/TabViewPage.xaml.cs  | 19 +++++++++++++------
 2 files changed, 18 insertions(+), 7 deletions(-)

diff --git a/WinUIGallery/Samples/ControlPages/TabViewPage.xaml b/WinUIGallery/Samples/ControlPages/TabViewPage.xaml
index cb72e54a2..744e14d82 100644
--- a/WinUIGallery/Samples/ControlPages/TabViewPage.xaml
+++ b/WinUIGallery/Samples/ControlPages/TabViewPage.xaml
@@ -228,6 +228,7 @@
                         TextWrapping="WrapWholeWords" />
 
                     <TabView
+                        BringIntoViewRequested="TabView_BringIntoViewRequested"
                         MinHeight="475"
                         Margin="-12"
                         AddTabButtonClick="TabView_AddButtonClick"
@@ -271,10 +272,12 @@
             <controls:ControlExample.Example>
                 <TabView
                     x:Name="TabView3"
+                    BringIntoViewRequested="TabView_BringIntoViewRequested"
                     MinHeight="475"
                     Margin="-12"
                     IsAddTabButtonVisible="False"
-                    SelectedIndex="0">
+                    SelectedIndex="0"
+                    TabWidthMode="SizeToContent">
                     <TabView.TabItems>
                         <TabViewItem Header="Home" IsClosable="False">
                             <TabViewItem.IconSource>
@@ -378,6 +381,7 @@
                         TextWrapping="WrapWholeWords" />
 
                     <TabView
+                        BringIntoViewRequested="TabView_BringIntoViewRequested"
                         MinWidth="490"
                         IsAddTabButtonVisible="False"
                         SelectedIndex="0"
diff --git a/WinUIGallery/Samples/ControlPages/TabViewPage.xaml.cs b/WinUIGallery/Samples/ControlPages/TabViewPage.xaml.cs
index 9eba4cb41..be8057147 100644
--- a/WinUIGallery/Samples/ControlPages/TabViewPage.xaml.cs
+++ b/WinUIGallery/Samples/ControlPages/TabViewPage.xaml.cs
@@ -29,7 +29,7 @@ public TabViewPage()
         InitializeDataBindingSampleData();
     }
 
-#region SharedTabViewLogic
+    #region SharedTabViewLogic
     private void TabView_Loaded(object sender, RoutedEventArgs e)
     {
         for (int i = 0; i < 3; i++)
@@ -38,6 +38,13 @@ private void TabView_Loaded(object sender, RoutedEventArgs e)
         }
     }
 
+    private void TabView_BringIntoViewRequested(UIElement sender, BringIntoViewRequestedEventArgs args)
+    {
+        // The TabView control is firing this event when TabWidthMode is set to `SizeToContent` or `Compact`.
+        // This will work around an auto-scroll issue when the page is loaded.
+        args.Handled = true;
+    }
+
     private void TabView_AddButtonClick(TabView sender, object args)
     {
         sender.TabItems.Add(CreateNewTab(sender.TabItems.Count));
@@ -76,9 +83,9 @@ private TabViewItem CreateNewTab(int index)
 
         return newItem;
     }
-#endregion
+    #endregion
 
-#region ItemsSourceSample
+    #region ItemsSourceSample
     private void InitializeDataBindingSampleData()
     {
         myDatas = new ObservableCollection<MyData>();
@@ -128,9 +135,9 @@ private void TabViewItemsSourceSample_TabCloseRequested(TabView sender, TabViewT
         // Remove the requested MyData object from the collection.
         myDatas.Remove(args.Item as MyData);
     }
-#endregion
+    #endregion
 
-#region KeyboardAcceleratorSample
+    #region KeyboardAcceleratorSample
     private void NewTabKeyboardAccelerator_Invoked(KeyboardAccelerator sender, KeyboardAcceleratorInvokedEventArgs args)
     {
         var senderTabView = args.Element as TabView;
@@ -198,7 +205,7 @@ private void NavigateToNumberedTabKeyboardAccelerator_Invoked(KeyboardAccelerato
 
         args.Handled = true;
     }
-#endregion
+    #endregion
 
     private void TabWidthBehaviorComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
     {