Use properties window hwnd

Author: yaira2

src/Files.App/Strings/en-US/Resources.resw

@@ -4122,7 +4122,7 @@
     <comment>Appears when two compared hashes match, e.g. "Matches SHA256"</comment>
   </data>
   <data name="HashesDoNotMatch" xml:space="preserve">
-    <value>Hashes don't match</value>
+    <value>No matches found</value>
     <comment>Appears when two compared hashes don't match</comment>
   </data>
   <data name="PathOrAlias" xml:space="preserve">

src/Files.App/ViewModels/Properties/HashesViewModel.cs

@@ -2,6 +2,7 @@
 // Licensed under the MIT License.
 
 using Files.Shared.Helpers;
+using Microsoft.UI.Windowing;
 using Microsoft.UI.Xaml.Controls;
 using System.IO;
 using System.Security.Cryptography;
@@ -14,6 +15,8 @@ public sealed partial class HashesViewModel : ObservableObject, IDisposable
 		private ICommonDialogService CommonDialogService { get; } = Ioc.Default.GetRequiredService<ICommonDialogService>();
 		private IUserSettingsService UserSettingsService { get; } = Ioc.Default.GetService<IUserSettingsService>()!;
 
+		private readonly AppWindow _appWindow;
+
 		private HashInfoItem _selectedItem;
 		public HashInfoItem SelectedItem
 		{
@@ -62,11 +65,12 @@ public string InfoBarTitle
 		public bool IsInfoBarOpen
 			=> !string.IsNullOrEmpty(HashInput);
 
-		public HashesViewModel(ListedItem item)
+		public HashesViewModel(ListedItem item, AppWindow appWindow)
 		{
 			ToggleIsEnabledCommand = new RelayCommand<string>(ToggleIsEnabled);
 
 			_item = item;
+			_appWindow = appWindow;
 			_cancellationTokenSource = new();
 
 			Hashes =
@@ -189,8 +193,10 @@ private void OnHashInputTextChanged()
 
 		private async Task OnCompareFileAsync()
 		{
+			var hWnd = Microsoft.UI.Win32Interop.GetWindowFromWindowId(_appWindow.Id);
+
 			var result = CommonDialogService.Open_FileOpenDialog(
-				MainWindow.Instance.WindowHandle,
+				hWnd,
 				false,
 				[],
 				Environment.SpecialFolder.Desktop,

src/Files.App/Views/Properties/HashesPage.xaml.cs

@@ -1,14 +1,11 @@
 // Copyright (c) Files Community
 // Licensed under the MIT License.
 
-using Files.App.Data.Parameters;
-using Files.App.Utils;
 using Files.App.ViewModels.Properties;
 using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Controls;
 using Microsoft.UI.Xaml.Controls.Primitives;
 using Microsoft.UI.Xaml.Navigation;
-using System.Threading.Tasks;
 
 namespace Files.App.Views.Properties
 {
@@ -25,9 +22,10 @@ public HashesPage()
 
 		protected override void OnNavigatedTo(NavigationEventArgs e)
 		{
-			var np = (PropertiesPageNavigationParameter)e.Parameter;
-			if (np.Parameter is ListedItem listedItem)
-				HashesViewModel = new(listedItem);
+			var parameter = (PropertiesPageNavigationParameter)e.Parameter;
+
+			if (parameter.Parameter is ListedItem listedItem)
+				HashesViewModel = new(listedItem, parameter.Window.AppWindow);
 
 			base.OnNavigatedTo(e);
 		}