MainWindow skeleton

src/AppCommon/FileTime.App.Core.Abstraction/IAppState.cs

@@ -7,6 +7,7 @@ namespace FileTime.App.Core
     {
         ObservableCollection<ITabViewModel> Tabs { get; }
         ITabViewModel? SelectedTab { get; }
+        IObservable<ITabViewModel?> SelectedTabObservable { get; }
         IObservable<string?> SearchText { get; }
 
         void AddTab(ITabViewModel tabViewModel);

src/AppCommon/FileTime.App.Core.Abstraction/ViewModels/IContainerSizeContainerViewModel.cs

@@ -1,6 +1,9 @@
+using FileTime.Core.Models;
+using InitableService;
+
 namespace FileTime.App.Core.ViewModels
 {
-    public interface IContainerSizeContainerViewModel : IItemViewModel
+    public interface IContainerSizeContainerViewModel : IItemViewModel, IInitable<IContainer, ITabViewModel, int>
     {
         long Size { get; set; }
     }

src/AppCommon/FileTime.App.Core.Abstraction/ViewModels/IContainerViewModel.cs

@@ -1,6 +1,9 @@
+using FileTime.Core.Models;
+using InitableService;
+
 namespace FileTime.App.Core.ViewModels
 {
-    public interface IContainerViewModel : IItemViewModel
+    public interface IContainerViewModel : IItemViewModel, IInitable<IContainer, ITabViewModel, int>
     {
     }
 }

src/AppCommon/FileTime.App.Core.Abstraction/ViewModels/IElementViewModel.cs

@@ -1,6 +1,9 @@
+using FileTime.Core.Models;
+using InitableService;
+
 namespace FileTime.App.Core.ViewModels
 {
-    public interface IElementViewModel : IItemViewModel
+    public interface IElementViewModel : IItemViewModel, IInitable<IElement, ITabViewModel, int>
     {
         long? Size { get; set; }
     }

src/AppCommon/FileTime.App.Core.Abstraction/ViewModels/IFileViewModel.cs

@@ -1,6 +1,9 @@
+using FileTime.Core.Models;
+using InitableService;
+
 namespace FileTime.App.Core.ViewModels
 {
-    public interface IFileViewModel : IElementViewModel
+    public interface IFileViewModel : IElementViewModel, IInitable<IFileElement, ITabViewModel, int>
     {
     }
 }

src/AppCommon/FileTime.App.Core.Abstraction/ViewModels/IItemViewModel.cs

@@ -2,13 +2,15 @@ using System.Reactive.Subjects;
 using FileTime.App.Core.Models;
 using FileTime.App.Core.Models.Enums;
 using FileTime.Core.Models;
+using InitableService;
 
 namespace FileTime.App.Core.ViewModels
 {
-    public interface IItemViewModel
+    public interface IItemViewModel : IInitable<IItem, ITabViewModel, int>
     {
         IItem? BaseItem { get; set; }
         IObservable<IReadOnlyList<ItemNamePart>>? DisplayName { get; set; }
+        string? DisplayNameText { get; set; }
         IObservable<bool>? IsSelected { get; set; }
         IObservable<bool>? IsMarked { get; set; }
         BehaviorSubject<bool> IsAlternative { get; }

src/AppCommon/FileTime.App.Core.Abstraction/ViewModels/ITabViewModel.cs

@@ -5,12 +5,14 @@ using InitableService;
 
 namespace FileTime.App.Core.ViewModels
 {
-    public interface ITabViewModel : IInitable<ITab>
+    public interface ITabViewModel : IInitable<ITab, int>
     {
+        ITab? Tab { get; }
+        int TabNumber { get; }
+        IObservable<bool> IsSelected { get; }
         IObservable<IContainer?>? CurrentLocation { get; }
         IObservable<IItemViewModel?>? CurrentSelectedItem { get; }
         IObservable<IReadOnlyList<IItemViewModel>>? CurrentItems { get; }
         IObservable<IReadOnlyList<FullName>> MarkedItems { get; }
-        ITab? Tab { get; }
     }
 }

src/AppCommon/FileTime.App.Core/AppStateBase.cs

@@ -10,15 +10,31 @@ namespace FileTime.App.Core
     public abstract partial class AppStateBase : IAppState
     {
         private readonly BehaviorSubject<string?> _searchText = new(null);
+        private readonly BehaviorSubject<ITabViewModel?> _selectedTabObservable = new(null);
+        private ITabViewModel? _selectedTab;
+
         public ObservableCollection<ITabViewModel> Tabs { get; } = new();
         public IObservable<string?> SearchText { get; private set; }
 
-        [Property]
+        public IObservable<ITabViewModel?> SelectedTabObservable { get; private set; }
-        private ITabViewModel? _selectedTab;
+        public ITabViewModel? SelectedTab
+        {
+            get => _selectedTab;
+            private set
+            {
+                if (value != _selectedTab)
+                {
+                    _selectedTab = value;
+                    OnPropertyChanged(nameof(SelectedTab));
+                    _selectedTabObservable.OnNext(value);
+                }
+            }
+        }
 
         partial void OnInitialize()
         {
             SearchText = _searchText.AsObservable();
+            SelectedTabObservable = _selectedTabObservable.AsObservable();
         }
 
         public void AddTab(ITabViewModel tabViewModel)
@@ -45,5 +61,10 @@ namespace FileTime.App.Core
         {
             _searchText.OnNext(searchText);
         }
+
+        public void SetSelectedTab(ITabViewModel tabToSelect)
+        {
+            SelectedTab = tabToSelect;
+        }
     }
 }

src/AppCommon/FileTime.App.Core/ViewModels/ContainerSizeContainerViewModel.cs

@@ -1,11 +1,22 @@
+using FileTime.App.Core.Services;
+using FileTime.Core.Models;
 using MvvmGen;
 
 namespace FileTime.App.Core.ViewModels
 {
-    [ViewModel]
+    [ViewModel(GenerateConstructor = false)]
     public partial class ContainerSizeContainerViewModel : ItemViewModel, IContainerSizeContainerViewModel
     {
         [Property]
         private long _size;
+
+        public ContainerSizeContainerViewModel(IItemNameConverterService _itemNameConverterService, IAppState _appState) : base(_itemNameConverterService, _appState)
+        {
+        }
+
+        public void Init(IContainer item, ITabViewModel parentTab, int index)
+        {
+            Init((IItem)item, parentTab, index);
+        }
     }
 }

src/AppCommon/FileTime.App.Core/ViewModels/ContainerViewModel.cs

@@ -1,6 +1,19 @@
+using FileTime.App.Core.Services;
+using FileTime.Core.Models;
+using MvvmGen;
+
 namespace FileTime.App.Core.ViewModels
 {
-    public class ContainerViewModel : ItemViewModel, IContainerViewModel
+    [ViewModel(GenerateConstructor = false)]
+    public partial class ContainerViewModel : ItemViewModel, IContainerViewModel
+    {
+        public ContainerViewModel(IItemNameConverterService _itemNameConverterService, IAppState _appState) : base(_itemNameConverterService, _appState)
         {
         }
+
+        public void Init(IContainer item, ITabViewModel parentTab, int index)
+        {
+            Init((IItem)item, parentTab, index);
+        }
+    }
 }

src/AppCommon/FileTime.App.Core/ViewModels/ElementViewModel.cs

@@ -1,11 +1,22 @@
+using FileTime.App.Core.Services;
+using FileTime.Core.Models;
 using MvvmGen;
 
 namespace FileTime.App.Core.ViewModels
 {
-    [ViewModel]
+    [ViewModel(GenerateConstructor = false)]
     public partial class ElementViewModel : ItemViewModel, IElementViewModel
     {
         [Property]
         private long? _size;
+
+        public ElementViewModel(IItemNameConverterService _itemNameConverterService, IAppState _appState) : base(_itemNameConverterService, _appState)
+        {
+        }
+
+        public void Init(IElement item, ITabViewModel parentTab, int index)
+        {
+            Init((IItem)item, parentTab, index);
+        }
     }
 }

src/AppCommon/FileTime.App.Core/ViewModels/FileViewModel.cs

@@ -1,6 +1,19 @@
+using FileTime.App.Core.Services;
+using FileTime.Core.Models;
+using MvvmGen;
+
 namespace FileTime.App.Core.ViewModels
 {
-    public class FileViewModel : ElementViewModel, IFileViewModel
+    [ViewModel(GenerateConstructor = false)]
+    public partial class FileViewModel : ElementViewModel, IFileViewModel
+    {
+        public FileViewModel(IItemNameConverterService _itemNameConverterService, IAppState _appState) : base(_itemNameConverterService, _appState)
         {
         }
+
+        public void Init(IFileElement item, ITabViewModel parentTab, int index)
+        {
+            Init((IElement)item, parentTab, index);
+        }
+    }
 }

src/AppCommon/FileTime.App.Core/ViewModels/ItemViewModel.cs

@@ -1,12 +1,16 @@
+using System.Reactive.Linq;
 using System.Reactive.Subjects;
 using FileTime.App.Core.Models;
 using FileTime.App.Core.Models.Enums;
+using FileTime.App.Core.Services;
 using FileTime.Core.Models;
 using MvvmGen;
 
 namespace FileTime.App.Core.ViewModels
 {
     [ViewModel]
+    [Inject(typeof(IAppState), "_appState")]
+    [Inject(typeof(IItemNameConverterService), "_itemNameConverterService")]
     public abstract partial class ItemViewModel : IItemViewModel
     {
         [Property]
@@ -15,6 +19,9 @@ namespace FileTime.App.Core.ViewModels
         [Property]
         private IObservable<IReadOnlyList<ItemNamePart>>? _displayName;
 
+        [Property]
+        private string? _displayNameText;
+
         [Property]
         private IObservable<bool>? _isSelected;
 
@@ -32,5 +39,29 @@ namespace FileTime.App.Core.ViewModels
 
         [Property]
         private BehaviorSubject<bool> _isAlternative = new(false);
+
+        public void Init(IItem item, ITabViewModel parentTab, int index)
+        {
+            BaseItem = item;
+            DisplayName = _appState.SearchText.Select(s => _itemNameConverterService.GetDisplayName(item.DisplayName, s));
+            DisplayNameText = item.DisplayName;
+            IsMarked = parentTab.MarkedItems.Select(m => m.Contains(item.FullName));
+            IsSelected = parentTab.MarkedItems.Select(m => m.Contains(item.FullName));
+            IsAlternative.OnNext(index % 2 == 0);
+            ViewMode = Observable.CombineLatest(IsMarked, IsSelected, IsAlternative, GenerateViewMode);
+            Attributes = item.Attributes;
+            CreatedAt = item.CreatedAt;
+        }
+
+        private ItemViewMode GenerateViewMode(bool isMarked, bool isSelected, bool sAlternative)
+        => (isMarked, isSelected, sAlternative) switch
+        {
+            (true, true, _) => ItemViewMode.MarkedSelected,
+            (true, false, true) => ItemViewMode.MarkedAlternative,
+            (false, true, _) => ItemViewMode.Selected,
+            (false, false, true) => ItemViewMode.Alternative,
+            (true, false, false) => ItemViewMode.Marked,
+            _ => ItemViewMode.Default
+        };
     }
 }

src/AppCommon/FileTime.App.Core/ViewModels/TabViewModel.cs

@@ -17,13 +17,16 @@ namespace FileTime.App.Core.ViewModels
         private readonly List<IDisposable> _disposables = new();
         private bool disposed;
 
+        public ITab? Tab { get; private set; }
+        public int TabNumber { get; private set; }
+
+        public IObservable<bool> IsSelected { get; }
+
         public IObservable<IContainer?>? CurrentLocation { get; private set; }
         public IObservable<IItemViewModel?>? CurrentSelectedItem { get; private set; }
         public IObservable<IReadOnlyList<IItemViewModel>>? CurrentItems { get; private set; }
         public IObservable<IReadOnlyList<FullName>> MarkedItems { get; }
 
-        public ITab? Tab { get; private set; }
-
         public TabViewModel(
             IServiceProvider serviceProvider,
             IItemNameConverterService itemNameConverterService,
@@ -34,10 +37,14 @@ namespace FileTime.App.Core.ViewModels
             _appState = appState;
 
             MarkedItems = _markedItems.Select(e => e.ToList()).AsObservable();
+            IsSelected = _appState.SelectedTabObservable.Select(s => s == this);
         }
 
-        public void Init(ITab tab)
+        public void Init(ITab tab, int tabNumber)
         {
+            Tab = tab;
+            TabNumber = tabNumber;
+
             CurrentLocation = tab.CurrentLocation.AsObservable();
             CurrentItems = tab.CurrentItems.Select(items => items.Select(MapItemToViewModel).ToList());
             CurrentSelectedItem = Observable.CombineLatest(
@@ -45,60 +52,32 @@ namespace FileTime.App.Core.ViewModels
                 tab.CurrentSelectedItem,
                 (currentItems, currentSelectedItemPath) => currentItems.FirstOrDefault(i => i.BaseItem?.FullName == currentSelectedItemPath?.Path));
             tab.CurrentLocation.Subscribe((_) => _markedItems.OnNext(Enumerable.Empty<FullName>()));
-
-            Tab = tab;
         }
 
         private IItemViewModel MapItemToViewModel(IItem item, int index)
         {
             if (item is IContainer container)
             {
-                var containerViewModel = _serviceProvider.GetRequiredService<IContainerViewModel>();
+                var containerViewModel = _serviceProvider.GetInitableResolver<IContainer, ITabViewModel, int>(container, this, index).GetRequiredService<IContainerViewModel>();
-                InitIItemViewModel(containerViewModel, item);
 
                 return containerViewModel;
             }
             else if (item is IFileElement fileElement)
             {
-                var fileViewModel = _serviceProvider.GetRequiredService<IFileViewModel>();
+                var fileViewModel = _serviceProvider.GetInitableResolver<IFileElement, ITabViewModel, int>(fileElement, this, index).GetRequiredService<IFileViewModel>();
-                InitIItemViewModel(fileViewModel, item);
                 fileViewModel.Size = fileElement.Size;
 
                 return fileViewModel;
             }
             else if (item is IElement element)
             {
-                var elementViewModel = _serviceProvider.GetRequiredService<IElementViewModel>();
+                var elementViewModel = _serviceProvider.GetInitableResolver<IElement, ITabViewModel, int>(element, this, index).GetRequiredService<IElementViewModel>();
-                InitIItemViewModel(elementViewModel, item);
 
                 return elementViewModel;
             }
 
             throw new ArgumentException($"{nameof(item)} is not {nameof(IContainer)} neighter {nameof(IElement)}");
-
-            void InitIItemViewModel(IItemViewModel itemViewModel, IItem item)
-            {
-                itemViewModel.BaseItem = item;
-                itemViewModel.DisplayName = _appState.SearchText.Select(s => _itemNameConverterService.GetDisplayName(item.DisplayName, s));
-                itemViewModel.IsMarked = MarkedItems.Select(m => m.Contains(item.FullName));
-                itemViewModel.IsSelected = MarkedItems.Select(m => m.Contains(item.FullName));
-                itemViewModel.IsAlternative.OnNext(index % 2 == 0);
-                itemViewModel.ViewMode = Observable.CombineLatest(itemViewModel.IsMarked, itemViewModel.IsSelected, itemViewModel.IsAlternative, GenerateViewMode);
-                itemViewModel.Attributes = item.Attributes;
-                itemViewModel.CreatedAt = item.CreatedAt;
         }
-        }
-
-        private ItemViewMode GenerateViewMode(bool isMarked, bool isSelected, bool sAlternative)
-        => (isMarked, isSelected, sAlternative) switch
-        {
-            (true, true, _) => ItemViewMode.MarkedSelected,
-            (true, false, true) => ItemViewMode.MarkedAlternative,
-            (false, true, _) => ItemViewMode.Selected,
-            (false, false, true) => ItemViewMode.Alternative,
-            (true, false, false) => ItemViewMode.Marked,
-            _ => ItemViewMode.Default
-        };
 
         ~TabViewModel() => Dispose(false);
 

src/Core/FileTime.Core.Abstraction/Models/IContainer.cs

@@ -2,6 +2,7 @@ namespace FileTime.Core.Models
 {
     public interface IContainer : IItem
     {
-        IReadOnlyList<IAbsolutePath> Items { get; }
+        IObservable<IReadOnlyList<IAbsolutePath>> Items { get; }
+        IObservable<bool> IsLoading { get; }
     }
 }

src/Core/FileTime.Core.Models/Container.cs

@@ -1,3 +1,5 @@
+using System.Reactive.Linq;
+using System.Reactive.Subjects;
 using FileTime.Core.Enums;
 using FileTime.Core.Services;
 
@@ -16,5 +18,9 @@ namespace FileTime.Core.Models
         bool CanRename,
         string? Attributes,
         IContentProvider Provider,
-        IReadOnlyList<IAbsolutePath> Items) : IContainer;
+        IObservable<IReadOnlyList<IAbsolutePath>> Items) : IContainer
+    {
+        BehaviorSubject<bool> IsLoading { get; } = new BehaviorSubject<bool>(false);
+        IObservable<bool> IContainer.IsLoading => IsLoading.AsObservable();
+    }
 }

src/Core/FileTime.Core.Services/ContentProviderBase.cs

@@ -1,3 +1,5 @@
+using System.Reactive.Linq;
+using System.Reactive.Subjects;
 using FileTime.Core.Enums;
 using FileTime.Core.Models;
 
@@ -5,9 +7,9 @@ namespace FileTime.Core.Services
 {
     public abstract class ContentProviderBase : IContentProvider
     {
-        protected List<IAbsolutePath> Items { get; set; } = new List<IAbsolutePath>();
+        protected BehaviorSubject<IReadOnlyList<IAbsolutePath>> Items { get; } = new BehaviorSubject<IReadOnlyList<IAbsolutePath>>(new List<IAbsolutePath>());
 
-        IReadOnlyList<IAbsolutePath> IContainer.Items => Items;
+        IObservable<IReadOnlyList<IAbsolutePath>> IContainer.Items => Items;
 
         public string Name { get; }
 
@@ -33,6 +35,10 @@ namespace FileTime.Core.Services
 
         public string? Attributes => null;
 
+        protected BehaviorSubject<bool> IsLoading { get; } = new(false);
+
+        IObservable<bool> IContainer.IsLoading => IsLoading.AsObservable();
+
         protected ContentProviderBase(string name)
         {
             DisplayName = Name = name;

src/Core/FileTime.Core.Services/Tab.cs

@@ -15,12 +15,15 @@ namespace FileTime.Core.Services
         public Tab()
         {
             CurrentLocation = _currentLocation.AsObservable();
-            CurrentItems = _currentLocation
+            CurrentItems = 
-                .Select(c =>
+                Observable.Merge(
-                    Observable.FromAsync(async () =>
+                    _currentLocation
-                        c == null
+                        .Where(c => c is not null)
-                        ? Enumerable.Empty<IItem>()
+                        .Select(c => c!.Items)
-                        : await c.Items
+                        .Switch()
+                        .Select(
+                            i => Observable.FromAsync(async () => 
+                                await i
                                 .ToAsyncEnumerable()
                                 .SelectAwait(
                                     async i =>
@@ -32,14 +35,18 @@ namespace FileTime.Core.Services
                                         }
                                         catch { return null!; }
                                     }
-
                                 )
                                 .Where(i => i != null)
                                 .ToListAsync()
                             )
                         )
-                .Merge(Constants.MaximumObservableMergeOperations);
+                        .Merge(Constants.MaximumObservableMergeOperations),
-            CurrentSelectedItem = CurrentLocation.Select(GetSelectedItemByLocation).Merge(_currentSelectedItem).Throttle(TimeSpan.FromMilliseconds(500));
+                    _currentLocation
+                        .Where(c => c is null)
+                        .Select(c => Enumerable.Empty<IItem>())
+                );
+
+            CurrentSelectedItem = CurrentLocation.Select(GetSelectedItemByLocation).Switch().Merge(_currentSelectedItem).Throttle(TimeSpan.FromMilliseconds(500));
         }
 
         public void Init(IContainer currentLocation)
@@ -47,9 +54,9 @@ namespace FileTime.Core.Services
             _currentLocation.OnNext(currentLocation);
         }
 
-        private IAbsolutePath? GetSelectedItemByLocation(IContainer? currentLocation)
+        private IObservable<IAbsolutePath?> GetSelectedItemByLocation(IContainer? currentLocation)
         {
-            return currentLocation?.Items[0];
+            return currentLocation?.Items?.Select(i => i.FirstOrDefault()) ?? Observable.Never((IAbsolutePath?)null);
         }
 
         public void ChangeLocation(IContainer newLocation)

src/GuiApp/Avalonia/FileTime.GuiApp.App/App.axaml

@@ -132,6 +132,9 @@
 			<converters:GetFileExtensionConverter x:Key="GetFileExtensionConverter"/>
 			<converters:FormatSizeConverter x:Key="FormatSizeConverter"/>
 			<converters:DateTimeConverter x:Key="DateTimeConverter"/>
+			<converters:SplitStringConverter x:Key="SplitStringConverter" />
+			<converters:CompareConverter x:Key="EqualityConverter"/>
+			<converters:CompareConverter x:Key="NotEqualsConverter" ComparisonCondition="{x:Static converters:ComparisonCondition.NotEqual}"/>
 		</ResourceDictionary>
 	</Application.Resources>
 

src/GuiApp/Avalonia/FileTime.GuiApp.App/FileTime.GuiApp.App.csproj

@@ -7,6 +7,7 @@
     <TrimMode>copyused</TrimMode>
     <BuiltInComInteropSupport>true</BuiltInComInteropSupport>
     <ApplicationIcon>filetime.ico</ApplicationIcon>
+    <Version>0.0.1</Version>
   </PropertyGroup>
   <ItemGroup>
     <Content Include="filetime.ico" />

src/GuiApp/Avalonia/FileTime.GuiApp/Assets/loading.svg

@@ -0,0 +1,3 @@
+<svg style="width:24px;height:24px" viewBox="0 0 24 24">
+    <path fill="white" d="M12,4V2A10,10 0 0,0 2,12H4A8,8 0 0,1 12,4Z" />
+</svg>

src/GuiApp/Avalonia/FileTime.GuiApp/Converters/CompareConverter.cs

@@ -0,0 +1,54 @@
+using System.Globalization;
+using Avalonia.Data.Converters;
+
+namespace FileTime.GuiApp.Converters
+{
+    public enum ComparisonCondition
+    {
+        Equal,
+        GreaterThan,
+        LessThan,
+        LessThanOrEqual,
+        NotEqual,
+        GreaterThanOrEqual
+    }
+
+    public class CompareConverter : IValueConverter
+    {
+        public ComparisonCondition ComparisonCondition { get; set; } = ComparisonCondition.Equal;
+
+        public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
+        {
+            return Compare(value, parameter);
+        }
+
+        public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+
+        private bool Compare(object? value, object? parameter)
+        {
+            if (ComparisonCondition == ComparisonCondition.GreaterThan)
+            {
+                if (value is int valueInt && (parameter is int parameterInt || int.TryParse(parameter?.ToString(), out parameterInt))) return valueInt > parameterInt;
+                else if (value is double valueDouble && (parameter is double parameterDouble || double.TryParse(parameter?.ToString(), out parameterDouble))) return valueDouble > parameterDouble;
+                else throw new NotSupportedException();
+            }
+            else if (ComparisonCondition == ComparisonCondition.NotEqual)
+            {
+                if (value is int valueInt && (parameter is int parameterInt || int.TryParse(parameter?.ToString(), out parameterInt))) return valueInt != parameterInt;
+                else if (value is double valueDouble && (parameter is double parameterDouble || double.TryParse(parameter?.ToString(), out parameterDouble))) return valueDouble != parameterDouble;
+                return value != parameter;
+            }
+            else if (ComparisonCondition == ComparisonCondition.Equal)
+            {
+                if (value is int valueInt && (parameter is int parameterInt || int.TryParse(parameter?.ToString(), out parameterInt))) return valueInt == parameterInt;
+                else if (value is double valueDouble && (parameter is double parameterDouble || double.TryParse(parameter?.ToString(), out parameterDouble))) return valueDouble == parameterDouble;
+                else if (value?.GetType().IsEnum ?? false && Enum.TryParse(value.GetType(), parameter?.ToString(), out var _)) return value.ToString() == parameter?.ToString();
+            }
+
+            return value == parameter;
+        }
+    }
+}

src/GuiApp/Avalonia/FileTime.GuiApp/Converters/SplitStringConverter.cs

@@ -0,0 +1,27 @@
+using System.Globalization;
+using Avalonia.Data.Converters;
+
+namespace FileTime.GuiApp.Converters
+{
+    public class SplitStringConverter : IValueConverter
+    {
+        public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
+        {
+            if (value is string path && parameter is string separator)
+            {
+                return path.Split(separator);
+            }
+            else if (value is string path2 && parameter is char separator2)
+            {
+                return path2.Split(separator2);
+            }
+
+            return value;
+        }
+
+        public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}

src/GuiApp/Avalonia/FileTime.GuiApp/FileTime.GuiApp.csproj

@@ -13,16 +13,6 @@
   <ItemGroup>
     <AvaloniaResource Include="Assets\**" />
   </ItemGroup>
-  <ItemGroup>
-    <AvaloniaXaml Update="Views\MainWindow.axaml">
-      <Generator>MSBuild:Compile</Generator>
-    </AvaloniaXaml>
-  </ItemGroup>
-  <ItemGroup>
-    <Compile Update="Views\MainWindow.axaml.cs">
-      <DependentUpon>MainWindow.axaml</DependentUpon>
-    </Compile>
-  </ItemGroup>
 
   <ItemGroup>
     <PackageReference Include="Avalonia" Version="0.10.13" />
@@ -30,6 +20,7 @@
     <!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
     <PackageReference Condition="'$(Configuration)' == 'Debug'" Include="Avalonia.Diagnostics" Version="0.10.13" />
     <PackageReference Include="Avalonia.ReactiveUI" Version="0.10.13" />
+    <PackageReference Include="Avalonia.Svg.Skia" Version="0.10.12" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="6.0.0" />
     <PackageReference Include="Microsoft.Extensions.Logging" Version="6.0.0" />
     <PackageReference Include="MvvmGen" Version="1.1.5" />

src/GuiApp/Avalonia/FileTime.GuiApp/ViewModels/MainWindowViewModel.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Reflection;
 using Avalonia.Input;
 using FileTime.App.Core;
 using FileTime.App.Core.ViewModels;
@@ -6,6 +7,7 @@ using FileTime.Core.Models;
 using FileTime.Core.Services;
 using FileTime.Providers.Local;
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
 using MvvmGen;
 
 namespace FileTime.GuiApp.ViewModels
@@ -14,17 +16,34 @@ namespace FileTime.GuiApp.ViewModels
     [Inject(typeof(IAppState), "_appState")]
     [Inject(typeof(ILocalContentProvider), "_localContentProvider")]
     [Inject(typeof(IServiceProvider), PropertyName = "_serviceProvider")]
+    [Inject(typeof(ILogger<MainWindowViewModel>), PropertyName = "_logger")]
     public partial class MainWindowViewModel : IMainWindowViewModelBase
     {
         public bool Loading => false;
         public IAppState AppState => _appState;
+        public string Title { get; private set; }
 
         partial void OnInitialize()
         {
+            _logger?.LogInformation($"Starting {nameof(MainWindowViewModel)} initialization...");
+
+            var version = Assembly.GetEntryAssembly()!.GetName().Version;
+            var versionString = "Unknwon version";
+            if (version != null)
+            {
+                versionString = $"{version.Major}.{version.Minor}.{version.Build}";
+                if (version.Revision != 0)
+                {
+                    versionString += $" ({version.Revision})";
+                }
+            }
+            Title = "FileTime " + versionString;
+
+            //TODO: refactor
             if (AppState.Tabs.Count == 0)
             {
                 var tab = _serviceProvider.GetInitableResolver<IContainer>(_localContentProvider).GetRequiredService<ITab>();
-                var tabViewModel = _serviceProvider.GetInitableResolver(tab).GetRequiredService<ITabViewModel>();
+                var tabViewModel = _serviceProvider.GetInitableResolver(tab, 1).GetRequiredService<ITabViewModel>();
 
                 _appState.AddTab(tabViewModel);
             }

src/GuiApp/Avalonia/FileTime.GuiApp/Views/MainWindow.axaml

@@ -23,6 +23,75 @@
 	<Grid Background="{DynamicResource AppBackgroundBrush}">
 		<Grid IsVisible="{Binding Loading, Converter={x:Static BoolConverters.Not}}">
 			<Grid ColumnDefinitions="250,*" RowDefinitions="Auto,*">
+				<Grid PointerPressed="HeaderPointerPressed">
+					<Rectangle Fill="#01000000"/>
+					<TextBlock Margin="15,10" Text="{Binding Title}"/>
+				</Grid>
+
+				<Grid Grid.Column="1" PointerPressed="HeaderPointerPressed">
+					<Rectangle Fill="#01000000"/>
+
+					<StackPanel Margin="20,10" Orientation="Horizontal">
+						<!--local:PathPresenter DataContext="{Binding AppState.SelectedTab.CurrentLocation^.FullName.Path,Converter={StaticResource PathPreformatter}}"/-->
+						<TextBlock
+							Text="{Binding AppState.SelectedTab.CurrentSelectedItem^.DisplayNameText}" Foreground="{StaticResource AccentBrush}" />
+					</StackPanel>
+				</Grid>
+
+				<Grid Grid.Column="1" Grid.Row="1" RowDefinitions="Auto,40,*,Auto">
+
+					<ItemsControl
+							Grid.Row="1"
+							Items="{Binding AppState.Tabs}">
+						<ItemsControl.ItemsPanel>
+							<ItemsPanelTemplate>
+								<StackPanel Orientation="Horizontal" />
+							</ItemsPanelTemplate>
+						</ItemsControl.ItemsPanel>
+						<ItemsControl.ItemTemplate>
+							<DataTemplate>
+								<Grid RowDefinitions="Auto,1">
+									<StackPanel Orientation="Horizontal" Margin="20,0,20,0">
+
+										<TextBlock
+											VerticalAlignment="Center" Text="{Binding TabNumber,StringFormat=({0})}" />
+
+										<TextBlock
+											VerticalAlignment="Center" Margin="5,0,0,0" Text="{Binding CurrentLocation^.Name}" />
+									</StackPanel>
+
+									<Rectangle Fill="{DynamicResource ForegroundBrush}" Grid.Row="1" IsVisible="{Binding IsSelected^}"/>
+								</Grid>
+							</DataTemplate>
+						</ItemsControl.ItemTemplate>
+					</ItemsControl>
+
+					<Grid
+						Grid.Row="2"
+						Margin="20,0,0,0">
+						<Grid>
+							<Grid.ColumnDefinitions>
+								<ColumnDefinition Width="15*" />
+								<ColumnDefinition Width="10" />
+								<ColumnDefinition Width="40*" />
+								<ColumnDefinition Width="10" />
+								<ColumnDefinition Width="45*" />
+							</Grid.ColumnDefinitions>
+
+
+							<Rectangle
+								Grid.Column="1"
+								Width="1"
+								Margin="0,10,0,10"
+								HorizontalAlignment="Center"
+								VerticalAlignment="Stretch"
+								Fill="{DynamicResource ContentSeparatorBrush}" />
+
+
+							<Grid Grid.Column="2" RowDefinitions="Auto,*">
+								<Grid IsVisible="{Binding AppState.SelectedTab.CurrentLocation^.IsLoading^}">
+									<Image Width="40" Height="40" Source="{SvgImage /Assets/loading.svg}" Classes="LoadingAnimation"/>
+								</Grid>
 								<ListBox
 									Grid.Row="1"
 									x:Name="CurrentItems"
@@ -39,6 +108,31 @@
 										</DataTemplate>
 									</ListBox.ItemTemplate>
 								</ListBox>
+
+								<TextBlock
+									Grid.Row="1"
+									x:CompileBindings="False"
+									x:Name="CurrentEmpty"
+									Margin="10"
+									HorizontalAlignment="Center"
+									FontWeight="Bold"
+									Foreground="{DynamicResource ErrorBrush}"
+									IsVisible="{Binding AppState.SelectedTab.CurrentLocation^.Items^.Count, Converter={StaticResource EqualityConverter}, ConverterParameter=0}">
+									Empty
+								</TextBlock>
+							</Grid>
+
+							<Rectangle
+								Grid.Column="3"
+								Width="1"
+								Margin="0,10,0,10"
+								HorizontalAlignment="Center"
+								VerticalAlignment="Stretch"
+								Fill="{DynamicResource ContentSeparatorBrush}" />
+
+						</Grid>
+					</Grid>
+				</Grid>
 			</Grid>
 			<!--Borders-->
 

src/GuiApp/Avalonia/FileTime.GuiApp/Views/MainWindow.axaml.cs

@@ -49,5 +49,24 @@ namespace FileTime.GuiApp.Views
                 ViewModel?.ProcessKeyDown(e.Key, e.KeyModifiers, h => e.Handled = h);
             }
         }
+
+        private void HeaderPointerPressed(object sender, PointerPressedEventArgs e)
+        {
+            if (e.ClickCount == 2)
+            {
+                if (WindowState == WindowState.Maximized)
+                {
+                    WindowState = WindowState.Normal;
+                }
+                else
+                {
+                    WindowState = WindowState.Maximized;
+                }
+            }
+            else
+            {
+                BeginMoveDrag(e);
+            }
+        }
     }
 }

src/Providers/FileTime.Providers.Local/LocalContentProvider.cs

@@ -1,3 +1,4 @@
+using System.Reactive.Linq;
 using System.Runtime.InteropServices;
 using FileTime.Core.Enums;
 using FileTime.Core.Models;
@@ -27,8 +28,7 @@ namespace FileTime.Providers.Local
                 ? new DirectoryInfo("/").GetDirectories()
                 : Environment.GetLogicalDrives().Select(d => new DirectoryInfo(d));
 
-            Items.Clear();
+            Items.OnNext(rootDirectories.Select(DirectoryToAbsolutePath).ToList());
-            Items.AddRange(rootDirectories.Select(DirectoryToAbsolutePath));
         }
 
         public override Task<IItem> GetItemByNativePathAsync(NativePath nativePath)
@@ -78,7 +78,7 @@ namespace FileTime.Providers.Local
                 true,
                 GetDirectoryAttributes(directoryInfo),
                 this,
-                GetItemsByContainer(directoryInfo)
+                Observable.Return(GetItemsByContainer(directoryInfo))
             );
         }