Fix: Fixed issue where opening folders from external source didn't honor the dual pane settings (#13014)

Author: hishitetsu

src/Files.App/MainWindow.xaml.cs

@@ -207,10 +207,12 @@ async Task PerformNavigation(string payload, string selectItem = null)
 						payload = folder.Path; // Convert short name to long name (#6190)
 				}
 
+				var generalSettingsService = Ioc.Default.GetService<IGeneralSettingsService>();
 				var paneNavigationArgs = new PaneNavigationArguments
 				{
 					LeftPaneNavPathParam = payload,
 					LeftPaneSelectItemParam = selectItem,
+					RightPaneNavPathParam = Bounds.Width > PaneHolderPage.DualPaneWidthThreshold && (generalSettingsService?.AlwaysOpenDualPaneInNewTab ?? false) ? "Home" : null,
 				};
 
 				if (rootFrame.Content is MainPage)

src/Files.App/Views/PaneHolderPage.xaml.cs

@@ -14,6 +14,8 @@ namespace Files.App.Views
 {
 	public sealed partial class PaneHolderPage : Page, IPaneHolder, ITabItemContent
 	{
+		public static readonly int DualPaneWidthThreshold = 750;
+
 		public static event EventHandler<PaneHolderPage>? CurrentInstanceChanged;
 
 		private IUserSettingsService UserSettingsService { get; }
@@ -46,7 +48,7 @@ public TabItemArguments TabItemArguments
 			}
 		}
 
-		private bool _WindowIsCompact = MainWindow.Instance.Bounds.Width <= 750;
+		private bool _WindowIsCompact = MainWindow.Instance.Bounds.Width <= DualPaneWidthThreshold;
 		public bool WindowIsCompact
 		{
 			get => _WindowIsCompact;
@@ -78,7 +80,7 @@ public bool IsMultiPaneActive
 			=> IsRightPaneVisible;
 
 		public bool IsMultiPaneEnabled
-			=> !(MainWindow.Instance.Bounds.Width <= 750);
+			=> MainWindow.Instance.Bounds.Width > DualPaneWidthThreshold;
 
 		private NavigationParams _NavParamsLeft;
 		public NavigationParams NavParamsLeft
@@ -208,7 +210,7 @@ public PaneHolderPage()
 
 		private void Current_SizeChanged(object sender, WindowSizeChangedEventArgs e)
 		{
-			WindowIsCompact = MainWindow.Instance.Bounds.Width <= 750;
+			WindowIsCompact = MainWindow.Instance.Bounds.Width <= DualPaneWidthThreshold;
 		}
 
 		protected override void OnNavigatedTo(NavigationEventArgs eventArgs)