WIP: Refresh-in-place for layout modes

Author: lukeblevins

Files/BaseLayout.cs

@@ -99,6 +99,7 @@ public ListedItem SelectedItem
         public BaseLayout()
         {
             this.Loaded += Page_Loaded;
+            App.AppSettings.LayoutModeChangeRequested += AppSettings_LayoutModeChangeRequested;
             Page_Loaded(null, null);
 
             // QuickLook Integration
@@ -111,12 +112,30 @@ public BaseLayout()
             }
         }
 
+        private void AppSettings_LayoutModeChangeRequested(object sender, EventArgs e)
+        {
+            if(App.CurrentInstance.ContentPage != null)
+            {
+                App.CurrentInstance.ViewModel.CancelLoadAndClearFiles();
+                if (App.AppSettings.LayoutMode == 0)
+                {
+                    App.CurrentInstance.ContentFrame.Navigate(typeof(GenericFileBrowser), App.CurrentInstance.ViewModel.Universal.WorkingDirectory, null);
+                }
+                else
+                {
+                    App.CurrentInstance.ContentFrame.Navigate(typeof(PhotoAlbum), App.CurrentInstance.ViewModel.Universal.WorkingDirectory, null);
+                }
+                App.CurrentInstance.ViewModel.isLoadingItems = false;
+            }
+
+        }
+
         public event PropertyChangedEventHandler PropertyChanged;
         private void NotifyPropertyChanged([CallerMemberName] string propertyName = "")
         {
             PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
         }
-
+        private bool isStale = false;
         protected override void OnNavigatedTo(NavigationEventArgs eventArgs)
         {
             base.OnNavigatedTo(eventArgs);

Files/View Models/SettingsViewModel.cs

@@ -522,20 +522,20 @@ public string ToggleLayoutModeIcon
             get => Get(""); // List View;
             set => Set(value);
         }
-
+        public event EventHandler LayoutModeChangeRequested;
         private RelayCommand toggleLayoutMode;
         public RelayCommand ToggleLayoutMode => toggleLayoutMode = new RelayCommand(() =>
         {
             if (LayoutMode == 0) // List View
             {
                 LayoutMode = 1; // Grid View
-
+                LayoutModeChangeRequested?.Invoke(this, EventArgs.Empty);
                 ToggleLayoutModeIcon = "";
             }
             else //Grid View
             {
                 LayoutMode = 0; // List View
-
+                LayoutModeChangeRequested?.Invoke(this, EventArgs.Empty);
                 ToggleLayoutModeIcon = "";
             }
         });

Files/Views/InstanceTabsView.xaml.cs

@@ -17,9 +17,6 @@
 
 namespace Files
 {
-    /// <summary>
-    /// The Instance Tabs Component for Project Mumbai
-    /// </summary>
     public sealed partial class InstanceTabsView : Page
     {
         public static TabView tabView;

Files/Views/Pages/ModernShellPage.xaml

@@ -12,7 +12,7 @@
     Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"
     KeyUp="ModernShellPage_KeyUp"
     Loaded="Page_Loaded"
-    NavigationCacheMode="Disabled"
+    NavigationCacheMode="Required"
     mc:Ignorable="d">
 
     <Grid>

Files/Views/Pages/ModernShellPage.xaml.cs

@@ -152,6 +152,7 @@ private void ItemDisplayFrame_Navigated(object sender, NavigationEventArgs e)
                     }
                 }
             }
+
             //RibbonArea.Focus(FocusState.Programmatic);
         }