remove useless comments and please spellcheck

- Added static fields and methods in App.xaml.cs to manage ShortcutConflictWindow singleton
- Updated ShortcutConflictWindow to clear singleton reference on close
- Modified all three locations that create ShortcutConflictWindow to check for existing instance
- If window already exists, activate it instead of creating a new one

Co-authored-by: davidegiacometti <25966642+davidegiacometti@users.noreply.github.com>

src/settings-ui/Settings.UI/SettingsXAML/App.xaml.cs

@@ -8,7 +8,6 @@ using System.Diagnostics;
 using System.IO;
 using System.Linq;
 using System.Text.Json;
-using System.Threading.Tasks;
 
 using ManagedCommon;
 using Microsoft.PowerToys.Settings.UI.Helpers;
@@ -16,11 +15,11 @@ using Microsoft.PowerToys.Settings.UI.Library;
 using Microsoft.PowerToys.Settings.UI.Library.Telemetry.Events;
 using Microsoft.PowerToys.Settings.UI.SerializationContext;
 using Microsoft.PowerToys.Settings.UI.Services;
+using Microsoft.PowerToys.Settings.UI.SettingsXAML.Controls.Dashboard;
 using Microsoft.PowerToys.Settings.UI.Views;
 using Microsoft.PowerToys.Telemetry;
 using Microsoft.UI.Xaml;
 using PowerToys.Interop;
-using Windows.UI.Popups;
 using WinRT.Interop;
 using WinUIEx;
 
@@ -365,6 +364,7 @@ namespace Microsoft.PowerToys.Settings.UI
         private static MainWindow settingsWindow;
         private static OobeWindow oobeWindow;
         private static FlyoutWindow flyoutWindow;
+        private static ShortcutConflictWindow shortcutConflictWindow;
 
         public static void ClearSettingsWindow()
         {
@@ -406,6 +406,21 @@ namespace Microsoft.PowerToys.Settings.UI
             flyoutWindow = null;
         }
 
+        public static ShortcutConflictWindow GetShortcutConflictWindow()
+        {
+            return shortcutConflictWindow;
+        }
+
+        public static void SetShortcutConflictWindow(ShortcutConflictWindow window)
+        {
+            shortcutConflictWindow = window;
+        }
+
+        public static void ClearShortcutConflictWindow()
+        {
+            shortcutConflictWindow = null;
+        }
+
         public static Type GetPage(string settingWindow)
         {
             switch (settingWindow)

src/settings-ui/Settings.UI/SettingsXAML/Controls/Dashboard/ShortcutConflictControl.xaml.cs

@@ -2,10 +2,7 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
-using System;
-using System.Collections.Generic;
 using System.ComponentModel;
-using System.Linq;
 using Microsoft.PowerToys.Settings.UI.Library.HotkeyConflicts;
 using Microsoft.PowerToys.Settings.UI.Library.Telemetry.Events;
 using Microsoft.PowerToys.Settings.UI.SettingsXAML.Controls.Dashboard;
@@ -154,11 +151,16 @@ namespace Microsoft.PowerToys.Settings.UI.Controls
                 ConflictCount = this.ConflictCount,
             });
 
-            // Create and show the new window instead of dialog
-            var conflictWindow = new ShortcutConflictWindow();
-
-            // Show the window
-            conflictWindow.Activate();
+            if (App.GetShortcutConflictWindow() == null)
+            {
+                var conflictWindow = new ShortcutConflictWindow();
+                App.SetShortcutConflictWindow(conflictWindow);
+                conflictWindow.Activate();
+            }
+            else
+            {
+                App.GetShortcutConflictWindow().Activate();
+            }
         }
     }
 }

src/settings-ui/Settings.UI/SettingsXAML/Controls/Dashboard/ShortcutConflictWindow.xaml.cs

@@ -2,16 +2,13 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
-using System;
 using CommunityToolkit.WinUI.Controls;
 using Microsoft.PowerToys.Settings.UI.Helpers;
 using Microsoft.PowerToys.Settings.UI.Library;
-using Microsoft.PowerToys.Settings.UI.Library.Helpers;
 using Microsoft.PowerToys.Settings.UI.Library.HotkeyConflicts;
 using Microsoft.PowerToys.Settings.UI.Services;
 using Microsoft.PowerToys.Settings.UI.ViewModels;
 using Microsoft.PowerToys.Settings.UI.Views;
-using Microsoft.UI;
 using Microsoft.UI.Windowing;
 using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Controls;
@@ -26,6 +23,9 @@ namespace Microsoft.PowerToys.Settings.UI.SettingsXAML.Controls.Dashboard
 
         public ShortcutConflictWindow()
         {
+            App.ThemeService.ThemeChanged += OnThemeChanged;
+            App.ThemeService.ApplyTheme();
+
             var settingsUtils = new SettingsUtils();
             ViewModel = new ShortcutConflictViewModel(
                 settingsUtils,
@@ -50,6 +50,11 @@ namespace Microsoft.PowerToys.Settings.UI.SettingsXAML.Controls.Dashboard
             ViewModel.OnPageLoaded();
         }
 
+        private void OnThemeChanged(object sender, ElementTheme theme)
+        {
+            WindowHelper.SetTheme(this, theme);
+        }
+
         private void CenterOnScreen()
         {
             var displayArea = DisplayArea.GetFromWindowId(this.AppWindow.Id, DisplayAreaFallback.Nearest);
@@ -126,7 +131,16 @@ namespace Microsoft.PowerToys.Settings.UI.SettingsXAML.Controls.Dashboard
 
         private void WindowEx_Closed(object sender, WindowEventArgs args)
         {
+            App.ClearShortcutConflictWindow();
             ViewModel?.Dispose();
+
+            var mainWindow = App.GetSettingsWindow();
+            if (mainWindow != null)
+            {
+                mainWindow.CloseHiddenWindow();
+            }
+
+            App.ThemeService.ThemeChanged -= OnThemeChanged;
         }
 
         private void Window_Activated_SetIcon(object sender, WindowActivatedEventArgs args)

src/settings-ui/Settings.UI/SettingsXAML/Controls/ShortcutControl/ShortcutControl.xaml.cs

@@ -9,7 +9,6 @@ using System.Linq;
 using CommunityToolkit.WinUI;
 using Microsoft.PowerToys.Settings.UI.Helpers;
 using Microsoft.PowerToys.Settings.UI.Library;
-using Microsoft.PowerToys.Settings.UI.Library.HotkeyConflicts;
 using Microsoft.PowerToys.Settings.UI.Library.Telemetry.Events;
 using Microsoft.PowerToys.Settings.UI.Services;
 using Microsoft.PowerToys.Settings.UI.SettingsXAML.Controls.Dashboard;
@@ -300,9 +299,16 @@ namespace Microsoft.PowerToys.Settings.UI.Controls
             // Close the current shortcut dialog
             shortcutDialog.Hide();
 
-            // Create and show the ShortcutConflictWindow
-            var conflictWindow = new ShortcutConflictWindow();
-            conflictWindow.Activate();
+            if (App.GetShortcutConflictWindow() == null)
+            {
+                var conflictWindow = new ShortcutConflictWindow();
+                App.SetShortcutConflictWindow(conflictWindow);
+                conflictWindow.Activate();
+            }
+            else
+            {
+                App.GetShortcutConflictWindow().Activate();
+            }
         }
 
         private void UpdateKeyVisualStyles()

src/settings-ui/Settings.UI/SettingsXAML/OOBE/Views/OobeOverview.xaml.cs

@@ -7,7 +7,6 @@ using global::PowerToys.GPOWrapper;
 using Microsoft.PowerToys.Settings.UI.Helpers;
 using Microsoft.PowerToys.Settings.UI.Library;
 using Microsoft.PowerToys.Settings.UI.Library.HotkeyConflicts;
-using Microsoft.PowerToys.Settings.UI.Library.Interfaces;
 using Microsoft.PowerToys.Settings.UI.OOBE.Enums;
 using Microsoft.PowerToys.Settings.UI.OOBE.ViewModel;
 using Microsoft.PowerToys.Settings.UI.Services;
@@ -280,9 +279,16 @@ namespace Microsoft.PowerToys.Settings.UI.OOBE.Views
                 return;
             }
 
-            // Create and show the shortcut conflict window
-            var conflictWindow = new ShortcutConflictWindow();
-            conflictWindow.Activate();
+            if (App.GetShortcutConflictWindow() == null)
+            {
+                var conflictWindow = new ShortcutConflictWindow();
+                App.SetShortcutConflictWindow(conflictWindow);
+                conflictWindow.Activate();
+            }
+            else
+            {
+                App.GetShortcutConflictWindow().Activate();
+            }
         }
 
         protected override void OnNavigatedTo(NavigationEventArgs e)