Removed FocusChanged and get back to old logic for SelectedPane

src/SmartCommander/ViewModels/FilesPaneViewModel.cs

@@ -15,7 +15,6 @@
 using System.Reactive.Linq;
 using System.Runtime.InteropServices;
 using System.Threading.Tasks;
-using System.Windows.Input;
 using Path = System.IO.Path;
 
 namespace SmartCommander.ViewModels
@@ -37,8 +36,7 @@ public class FilesPaneViewModel : ViewModelBase
 
         private bool _isSelected;
         private SortingBy _sorting = SortingBy.SortingByName;
-        private bool _ascending = true;
-        public event EventHandler? FocusChanged;
+        private bool _ascending = true;        
 
         public string CurrentDirectory
         {
@@ -96,12 +94,7 @@ public bool IsSelected
             set
             {
                 _isSelected = value;
-                this.RaisePropertyChanged(nameof(GridBorderBrush));
-
-                if (value)
-                {
-                    FocusChanged?.Invoke(this, EventArgs.Empty);
-                }
+                this.RaisePropertyChanged(nameof(GridBorderBrush));            
             }
         }
 
@@ -124,16 +117,15 @@ public FilesPaneViewModel()
             ShowViewerDialog = new Interaction<ViewerViewModel, ViewerViewModel?>();
         }
 
-        public FilesPaneViewModel(MainWindowViewModel mainVM, EventHandler focusHandler)
+        public FilesPaneViewModel(MainWindowViewModel mainVM)
         {
             CurrentDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Personal);
             ViewCommand = ReactiveCommand.Create(View);
             EditCommand = ReactiveCommand.Create(Edit);
             ZipCommand = ReactiveCommand.Create(Zip);
             UnzipCommand = ReactiveCommand.Create(Unzip);
             ShowViewerDialog = new Interaction<ViewerViewModel, ViewerViewModel?>();
-            _mainVM = mainVM;
-            FocusChanged += focusHandler;
+            _mainVM = mainVM;            
         }
 
         public event Action<object, object>? ScrollToItemRequested;
@@ -151,12 +143,12 @@ public void RequestScroll(object item, object? column)
 
         public void CellPointerPressed(object sender, object parameter)
         {
-            _mainVM.SelectedPane = this;
+            IsSelected = true;            
         }
 
         public void SortingStarted(object sender, object parameter)
         {
-            _mainVM.SelectedPane = this;
+            IsSelected = true;
 
             DataGridColumnEventArgs? args = parameter as DataGridColumnEventArgs;
             if (args != null)
@@ -248,7 +240,7 @@ public void SelectionChanged(object sender, object parameter)
 
         public void Tapped(object sender, object parameter)
         {
-            _mainVM.SelectedPane = this;
+            IsSelected = true;
         }
 
         public void DoubleTapped(object sender, object parameter)

src/SmartCommander/ViewModels/MainWindowViewModel.cs

@@ -2,6 +2,7 @@
 using Avalonia.Styling;
 using MsBox.Avalonia.Enums;
 using ReactiveUI;
+using Serilog;
 using SmartCommander.Assets;
 using SmartCommander.Models;
 using System;
@@ -43,9 +44,9 @@ public MainWindowViewModel()
 
             OptionsCommand = ReactiveCommand.CreateFromTask(ShowOptions);
 
-            LeftFileViewModel = new FilesPaneViewModel(this, OnFocusChanged);
-            RightFileViewModel = new FilesPaneViewModel(this, OnFocusChanged);
-            SelectedPane = RightFileViewModel;
+            LeftFileViewModel = new FilesPaneViewModel(this);
+            RightFileViewModel = new FilesPaneViewModel(this);
+            LeftFileViewModel.IsSelected = true;
 
             if (!string.IsNullOrEmpty(OptionsModel.Instance.LeftPanePath))
             {
@@ -66,15 +67,7 @@ private void SetLanguage()
             var culture = new CultureInfo(cultureName);
             Thread.CurrentThread.CurrentCulture = culture;
             Thread.CurrentThread.CurrentUICulture = culture;
-        }
-
-        private void OnFocusChanged(object? sender, EventArgs e)
-        {
-            if (sender is FilesPaneViewModel)
-            {
-                SelectedPane = (FilesPaneViewModel)sender;
-            }
-        }
+        }   
 
         public ReactiveCommand<Unit, Unit> ExitCommand { get; }
 
@@ -186,7 +179,26 @@ public FilesPaneViewModel SecondPane
             }
         }
 
-        public FilesPaneViewModel SelectedPane { get; set; }
+        public FilesPaneViewModel SelectedPane
+        {
+            get
+            {
+                if (LeftFileViewModel.IsSelected)
+                {
+                    return LeftFileViewModel;
+                }
+                else if (RightFileViewModel.IsSelected)
+                {
+                    return RightFileViewModel;
+                }
+                else
+                {
+                    Log.Error("No pane is selected");
+                }
+                return LeftFileViewModel;
+            }
+        }
+
 
         public void Execute()
         {

src/SmartCommander/Views/FilesPane.axaml

@@ -42,8 +42,7 @@
     </Grid>	
 	    <DataGrid Name="PaneDataGrid" Loaded="OnLoaded"
 				  IsFocused="{Binding IsSelected, Mode=OneWayToSource}"
-
-				  Margin="5" Grid.Row="1" IsTabStop="True"				
+          		  Margin="5" Grid.Row="1" IsTabStop="True"				
 				  ItemsSource="{Binding FoldersFilesList}" 
 				  AutoGenerateColumns="False"
 				  CanUserResizeColumns="True"