From 75196897ce7806624c3cd1443aae256d0d96f792 Mon Sep 17 00:00:00 2001
From: Hongtao Zhang <hongtao_zhang@outlook.com>
Date: Sat, 26 Mar 2022 12:06:01 -0500
Subject: [PATCH] Scroll to selected item when expanded or size changed

---
 Flow.Launcher/SettingWindow.xaml    |  7 +++++--
 Flow.Launcher/SettingWindow.xaml.cs | 19 ++++++++++++++++---
 2 files changed, 21 insertions(+), 5 deletions(-)

diff --git a/Flow.Launcher/SettingWindow.xaml b/Flow.Launcher/SettingWindow.xaml
index 967e4d52b1a..1eb162a9211 100644
--- a/Flow.Launcher/SettingWindow.xaml
+++ b/Flow.Launcher/SettingWindow.xaml
@@ -927,7 +927,9 @@
                                 ScrollViewer.CanContentScroll="False"
                                 ScrollViewer.HorizontalScrollBarVisibility="Disabled"
                                 SelectedItem="{Binding SelectedPlugin}"
-                                SnapsToDevicePixels="True">
+                                SelectionChanged="SelectedPluginChanged"
+                                SnapsToDevicePixels="True"
+                                Name="Plugins">
                                 <ListBox.ItemsPanel>
                                     <ItemsPanelTemplate>
                                         <StackPanel Margin="0,0,0,18" />
@@ -1116,7 +1118,8 @@
                                                             Margin="0"
                                                             Padding="1"
                                                             VerticalAlignment="Stretch"
-                                                            Content="{Binding SettingControl}" />
+                                                            Content="{Binding SettingControl}" 
+                                                            SizeChanged="ItemSizeChanged"/>
                                                     </StackPanel>
 
                                                     <StackPanel>
diff --git a/Flow.Launcher/SettingWindow.xaml.cs b/Flow.Launcher/SettingWindow.xaml.cs
index 15babee8bc7..1201318305b 100644
--- a/Flow.Launcher/SettingWindow.xaml.cs
+++ b/Flow.Launcher/SettingWindow.xaml.cs
@@ -13,12 +13,15 @@
 using System;
 using System.IO;
 using System.Windows;
+using System.Windows.Controls;
 using System.Windows.Forms;
 using System.Windows.Input;
 using System.Windows.Interop;
+using System.Windows.Media;
 using System.Windows.Navigation;
 using Button = System.Windows.Controls.Button;
 using Control = System.Windows.Controls.Control;
+using ListViewItem = System.Windows.Controls.ListViewItem;
 using MessageBox = System.Windows.MessageBox;
 using TextBox = System.Windows.Controls.TextBox;
 using ThemeManager = ModernWpf.ThemeManager;
@@ -44,6 +47,7 @@ public SettingWindow(IPublicAPI api, SettingWindowViewModel viewModel)
         }
 
         #region General
+
         private void OnLoaded(object sender, RoutedEventArgs e)
         {
             RefreshMaximizeRestoreButton();
@@ -247,6 +251,7 @@ private void OnPluginDirecotyClick(object sender, MouseButtonEventArgs e)
                     PluginManager.API.OpenDirectory(directory);
             }
         }
+
         #endregion
 
         #region Proxy
@@ -307,7 +312,7 @@ private void OnPluginStoreRefreshClick(object sender, RoutedEventArgs e)
 
         private void OnExternalPluginInstallClick(object sender, RoutedEventArgs e)
         {
-            if(sender is Button { DataContext: UserPlugin plugin })
+            if (sender is Button { DataContext: UserPlugin plugin })
             {
                 var pluginsManagerPlugin = PluginManager.GetPluginForId("9f8f9b14-2518-4907-b211-35ab6290dee7");
                 var actionKeyword = pluginsManagerPlugin.Metadata.ActionKeywords.Count == 0 ? "" : pluginsManagerPlugin.Metadata.ActionKeywords[0];
@@ -326,7 +331,7 @@ private void OnExternalPluginInstallClick(object sender, RoutedEventArgs e)
             textBox.MoveFocus(tRequest);
         }
 
-        private void ColorSchemeSelectedIndexChanged(object sender, EventArgs e) 
+        private void ColorSchemeSelectedIndexChanged(object sender, EventArgs e)
             => ThemeManager.Current.ApplicationTheme = settings.ColorScheme switch
             {
                 Constant.Light => ApplicationTheme.Light,
@@ -370,5 +375,13 @@ private void Window_StateChanged(object sender, EventArgs e)
             RefreshMaximizeRestoreButton();
         }
 
+        private void SelectedPluginChanged(object sender, SelectionChangedEventArgs e)
+        {
+            Plugins.ScrollIntoView(Plugins.SelectedItem);
+        }
+        private void ItemSizeChanged(object sender, SizeChangedEventArgs e)
+        {
+            Plugins.ScrollIntoView(Plugins.SelectedItem);
+        }
     }
-}
+}
\ No newline at end of file