From fbf36b890b6d05fa466b876ea5e6c00bd23559f7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81d=C3=A1m=20Kov=C3=A1cs?= <kovacsadam07@outlook.hu>
Date: Sat, 28 May 2022 21:59:43 +0200
Subject: [PATCH] ContextMenu (windows only)

---
 .../Services/IContextMenuProvider.cs          |   8 +
 .../Avalonia/FileTime.GuiApp.App/App.axaml    |   5 +-
 .../Avalonia/FileTime.GuiApp.App/Startup.cs   |  10 +
 .../Converters/ContextMenuGenerator.cs        |  30 +++
 .../FileTime.GuiApp/FileTime.GuiApp.csproj    |   2 +-
 .../Helper/NativeMethodHelpers.cs             |  71 +++++
 .../IconProviders/WindowsSystemIconHelper.cs  |  79 ++++++
 .../Resources/Converters.axaml                |   8 +
 .../FileTime.GuiApp/Resources/Styles.axaml    |  16 +-
 .../Services/LinuxContextMenuProvider.cs      |  11 +
 .../Services/WindowsContextMenuProvider.cs    | 249 ++++++++++++++++++
 .../FileTime.GuiApp/Views/MainWindow.axaml    |  49 ++--
 12 files changed, 508 insertions(+), 30 deletions(-)
 create mode 100644 src/GuiApp/Avalonia/FileTime.GuiApp.Abstractions/Services/IContextMenuProvider.cs
 create mode 100644 src/GuiApp/Avalonia/FileTime.GuiApp/Converters/ContextMenuGenerator.cs
 create mode 100644 src/GuiApp/Avalonia/FileTime.GuiApp/Helper/NativeMethodHelpers.cs
 create mode 100644 src/GuiApp/Avalonia/FileTime.GuiApp/IconProviders/WindowsSystemIconHelper.cs
 create mode 100644 src/GuiApp/Avalonia/FileTime.GuiApp/Services/LinuxContextMenuProvider.cs
 create mode 100644 src/GuiApp/Avalonia/FileTime.GuiApp/Services/WindowsContextMenuProvider.cs

diff --git a/src/GuiApp/Avalonia/FileTime.GuiApp.Abstractions/Services/IContextMenuProvider.cs b/src/GuiApp/Avalonia/FileTime.GuiApp.Abstractions/Services/IContextMenuProvider.cs
new file mode 100644
index 0000000..8b62efa
--- /dev/null
+++ b/src/GuiApp/Avalonia/FileTime.GuiApp.Abstractions/Services/IContextMenuProvider.cs
@@ -0,0 +1,8 @@
+using FileTime.Core.Models;
+
+namespace FileTime.GuiApp.Services;
+
+public interface IContextMenuProvider
+{
+    List<object> GetContextMenuForFolder(IContainer container);
+}
\ No newline at end of file
diff --git a/src/GuiApp/Avalonia/FileTime.GuiApp.App/App.axaml b/src/GuiApp/Avalonia/FileTime.GuiApp.App/App.axaml
index 35ebcd0..ad373e1 100644
--- a/src/GuiApp/Avalonia/FileTime.GuiApp.App/App.axaml
+++ b/src/GuiApp/Avalonia/FileTime.GuiApp.App/App.axaml
@@ -1,9 +1,8 @@
 <Application
     x:Class="FileTime.GuiApp.App.App"
     xmlns="https://github.com/avaloniaui"
-    xmlns:converters="using:FileTime.GuiApp.Converters"
-    xmlns:local="using:FileTime.GuiApp"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+
     <Application.Resources>
         <ResourceDictionary>
             <ResourceDictionary.MergedDictionaries>
@@ -13,7 +12,7 @@
             </ResourceDictionary.MergedDictionaries>
         </ResourceDictionary>
     </Application.Resources>
-
+    
     <Application.Styles>
         <StyleInclude Source="avares://FileTime.GuiApp/Resources/Styles.axaml" />
     </Application.Styles>
diff --git a/src/GuiApp/Avalonia/FileTime.GuiApp.App/Startup.cs b/src/GuiApp/Avalonia/FileTime.GuiApp.App/Startup.cs
index 60e76df..2b9201d 100644
--- a/src/GuiApp/Avalonia/FileTime.GuiApp.App/Startup.cs
+++ b/src/GuiApp/Avalonia/FileTime.GuiApp.App/Startup.cs
@@ -1,5 +1,6 @@
 using System;
 using System.IO;
+using System.Runtime.InteropServices;
 using FileTime.App.Core.Services;
 using FileTime.App.Core.ViewModels;
 using FileTime.Core.Interactions;
@@ -42,6 +43,15 @@ public static class Startup
         serviceCollection.TryAddSingleton<ISystemClipboardService, SystemClipboardService>();
         serviceCollection.TryAddSingleton<IInputInterface>(s => s.GetRequiredService<IDialogService>());
 
+        if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+        {
+            serviceCollection.AddSingleton<IContextMenuProvider, WindowsContextMenuProvider>();
+        }
+        else
+        {
+            serviceCollection.AddSingleton<IContextMenuProvider, LinuxContextMenuProvider>();
+        }
+
         return serviceCollection
             .AddSingleton<IStartupHandler, RootDriveInfoService>()
             .AddSingleton<IStartupHandler, PlacesService>();
diff --git a/src/GuiApp/Avalonia/FileTime.GuiApp/Converters/ContextMenuGenerator.cs b/src/GuiApp/Avalonia/FileTime.GuiApp/Converters/ContextMenuGenerator.cs
new file mode 100644
index 0000000..184c8fd
--- /dev/null
+++ b/src/GuiApp/Avalonia/FileTime.GuiApp/Converters/ContextMenuGenerator.cs
@@ -0,0 +1,30 @@
+using System.Globalization;
+using Avalonia.Controls;
+using Avalonia.Data.Converters;
+using FileTime.App.Core.ViewModels;
+using FileTime.GuiApp.Services;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace FileTime.GuiApp.Converters;
+
+public class ContextMenuGenerator : IValueConverter
+{
+    private IContextMenuProvider? _contextMenuProvider;
+
+    public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
+    {
+        _contextMenuProvider ??= DI.ServiceProvider.GetRequiredService<IContextMenuProvider>();
+
+        if (value is IContainerViewModel containerViewModel)
+        {
+            return _contextMenuProvider.GetContextMenuForFolder(containerViewModel.Container);
+        }
+
+        return new object[] { new MenuItem() { Header = "asd" } };
+    }
+
+    public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
+    {
+        throw new NotImplementedException();
+    }
+}
\ No newline at end of file
diff --git a/src/GuiApp/Avalonia/FileTime.GuiApp/FileTime.GuiApp.csproj b/src/GuiApp/Avalonia/FileTime.GuiApp/FileTime.GuiApp.csproj
index 42bbdb3..afce661 100644
--- a/src/GuiApp/Avalonia/FileTime.GuiApp/FileTime.GuiApp.csproj
+++ b/src/GuiApp/Avalonia/FileTime.GuiApp/FileTime.GuiApp.csproj
@@ -24,7 +24,7 @@
     <!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
     <PackageReference Condition="'$(Configuration)' == 'Debug'" Include="Avalonia.Diagnostics" Version="0.10.14" />
     <PackageReference Include="Avalonia.ReactiveUI" Version="0.10.14" />
-    <PackageReference Include="Avalonia.Svg.Skia" Version="0.10.13" />
+    <PackageReference Include="Avalonia.Svg.Skia" Version="0.10.14" />
     <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" />
diff --git a/src/GuiApp/Avalonia/FileTime.GuiApp/Helper/NativeMethodHelpers.cs b/src/GuiApp/Avalonia/FileTime.GuiApp/Helper/NativeMethodHelpers.cs
new file mode 100644
index 0000000..cd1fd02
--- /dev/null
+++ b/src/GuiApp/Avalonia/FileTime.GuiApp/Helper/NativeMethodHelpers.cs
@@ -0,0 +1,71 @@
+using System.Drawing;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace FileTime.GuiApp.Helper;
+
+public static class WindowsNativeMethods
+{
+    [DllImport("kernel32.dll", CharSet = CharSet.Unicode, SetLastError = true, BestFitMapping = false, ThrowOnUnmappableChar = true)]
+    internal static extern IntPtr LoadLibrary(string lpLibFileName);
+
+    [DllImport("user32.dll", CharSet = CharSet.Unicode, SetLastError = true, BestFitMapping = false, ThrowOnUnmappableChar = true)]
+    internal static extern int LoadString(IntPtr hInstance, uint wID, StringBuilder lpBuffer, int nBufferMax);
+
+    [DllImport("user32.dll")]
+    public static extern IntPtr LoadIcon(IntPtr hInstance, IntPtr lpIconName);
+
+    [DllImport("kernel32.dll")]
+    public static extern int FreeLibrary(IntPtr hLibModule);
+
+    [DllImport("shell32.dll")]
+    public static extern IntPtr ExtractAssociatedIcon(IntPtr hInst, StringBuilder lpIconPath, out ushort lpiIcon);
+}
+
+public static class NativeMethodHelpers
+{
+    public static string GetStringResource(string fileName, uint resourceId)
+    {
+        IntPtr? handle = null;
+        try
+        {
+            handle = WindowsNativeMethods.LoadLibrary(fileName);
+            StringBuilder buffer = new(8192); //Buffer for output from LoadString()
+            int length = WindowsNativeMethods.LoadString(handle.Value, resourceId, buffer, buffer.Capacity);
+            return buffer.ToString(0, length); //Return the part of the buffer that was used.
+        }
+        finally
+        {
+            if (handle is IntPtr validHandle)
+            {
+                WindowsNativeMethods.FreeLibrary(validHandle);
+            }
+        }
+    }
+
+    public static Icon GetIconResource(string fileName, uint resourceId)
+    {
+        IntPtr? handle = null;
+        try
+        {
+            handle = WindowsNativeMethods.LoadLibrary(fileName);
+            IntPtr handle2 = WindowsNativeMethods.LoadIcon(handle.Value, new IntPtr(resourceId));
+            return Icon.FromHandle(handle2);
+        }
+        finally
+        {
+            if (handle is IntPtr validHandle)
+            {
+                WindowsNativeMethods.FreeLibrary(validHandle);
+            }
+        }
+    }
+
+    /*public static Icon GetAssociatedIcon()
+    {
+        ushort uicon;
+        StringBuilder strB = new StringBuilder(fileName);
+        IntPtr handle = WindowsNativeMethods.ExtractAssociatedIcon(this.Handle, strB, out uicon);
+        return Icon.FromHandle(handle);
+    }*/
+}
\ No newline at end of file
diff --git a/src/GuiApp/Avalonia/FileTime.GuiApp/IconProviders/WindowsSystemIconHelper.cs b/src/GuiApp/Avalonia/FileTime.GuiApp/IconProviders/WindowsSystemIconHelper.cs
new file mode 100644
index 0000000..9d460ac
--- /dev/null
+++ b/src/GuiApp/Avalonia/FileTime.GuiApp/IconProviders/WindowsSystemIconHelper.cs
@@ -0,0 +1,79 @@
+using System.Drawing.Imaging;
+using Avalonia.Media.Imaging;
+using FileTime.Core.Models;
+using FileTime.GuiApp.Helper;
+using FileTime.GuiApp.Models;
+
+namespace FileTime.GuiApp.IconProviders;
+
+public static class WindowsSystemIconHelper
+    {
+        public static ImagePath? GetImageByDesktopIni(IContainer folder)
+        {
+            var file = new FileInfo(Path.Combine(folder.NativePath.Path, "desktop.ini"));
+            if (file.Exists)
+            {
+                var lines = File.ReadAllLines(file.FullName);
+                if (Array.Find(lines, l => l.StartsWith("iconresource", StringComparison.OrdinalIgnoreCase)) is string iconLine)
+                {
+                    var nameLineValue = string.Join('=', iconLine.Split('=')[1..]);
+                    return GetImagePathByIconPath(nameLineValue);
+                }
+            }
+
+            return null;
+        }
+
+        public static ImagePath GetImagePathByIconPath(string path)
+        {
+            var environemntVariables = Environment.GetEnvironmentVariables();
+            foreach (var keyo in environemntVariables.Keys)
+            {
+                if (keyo is string key && environemntVariables[key] is string value)
+                {
+                    path = path.Replace($"%{key}%", value);
+                }
+            }
+
+            var parts = path.Split(',');
+            (var parsedResourceId, var path2) = parts.Length >= 2 && long.TryParse(parts[^1], out var id) 
+                ? (id, NormalizePath(string.Join(',', parts[..^1]))) 
+                : (0, NormalizePath(path));
+
+            if (parsedResourceId == 0)
+            {
+                using var extractedIconAsStream = new MemoryStream();
+                using var extractedIcon = System.Drawing.Icon.ExtractAssociatedIcon(path2).ToBitmap();
+                extractedIcon.Save(extractedIconAsStream, ImageFormat.Png);
+                extractedIconAsStream.Position = 0;
+#pragma warning disable IDISP004 // Don't ignore created IDisposable
+                return new ImagePath(ImagePathType.Raw, new Bitmap(extractedIconAsStream));
+#pragma warning restore IDISP004 // Don't ignore created IDisposable
+            }
+            else
+            {
+                if (parsedResourceId < 0) parsedResourceId *= -1;
+
+                using var extractedIcon = NativeMethodHelpers.GetIconResource(path2, (uint)parsedResourceId).ToBitmap();
+
+                using var extractedIconAsStream = new MemoryStream();
+                extractedIcon.Save(extractedIconAsStream, ImageFormat.Png);
+                extractedIconAsStream.Position = 0;
+
+#pragma warning disable IDISP004 // Don't ignore created IDisposable
+                return new ImagePath(ImagePathType.Raw, new Bitmap(extractedIconAsStream));
+#pragma warning restore IDISP004 // Don't ignore created IDisposable
+
+            }
+        }
+
+        private static string NormalizePath(string path)
+        {
+            if (path.StartsWith('\"') && path.EndsWith('\"'))
+            {
+                return path[1..^1];
+            }
+
+            return path;
+        }
+    }
\ No newline at end of file
diff --git a/src/GuiApp/Avalonia/FileTime.GuiApp/Resources/Converters.axaml b/src/GuiApp/Avalonia/FileTime.GuiApp/Resources/Converters.axaml
index 5804180..381e21d 100644
--- a/src/GuiApp/Avalonia/FileTime.GuiApp/Resources/Converters.axaml
+++ b/src/GuiApp/Avalonia/FileTime.GuiApp/Resources/Converters.axaml
@@ -1,6 +1,13 @@
 <ResourceDictionary xmlns="https://github.com/avaloniaui"
                     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                     xmlns:converters="using:FileTime.GuiApp.Converters">
+    <ResourceDictionary.MergedDictionaries>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+                <ResourceInclude Source="avares://FileTime.GuiApp/Resources/Brushes.axaml"></ResourceInclude>
+            </ResourceDictionary.MergedDictionaries>
+        </ResourceDictionary>
+    </ResourceDictionary.MergedDictionaries>
     <converters:ItemViewModeToBrushConverter
         AlternativeBrush="{StaticResource AlternativeItemForegroundBrush}"
         DefaultBrush="{StaticResource ForegroundBrush}"
@@ -32,4 +39,5 @@
     <converters:CommandToCommandNameConverter x:Key="CommandToCommandNameConverter" />
     <converters:ItemToImageConverter x:Key="ItemToImageConverter" />
     <converters:StringReplaceConverter x:Key="PathPreformatter" OldValue="://" NewValue="/"/>
+    <converters:ContextMenuGenerator x:Key="ContextMenuGenerator"/>
 </ResourceDictionary>
\ No newline at end of file
diff --git a/src/GuiApp/Avalonia/FileTime.GuiApp/Resources/Styles.axaml b/src/GuiApp/Avalonia/FileTime.GuiApp/Resources/Styles.axaml
index 23b3bb2..f3d2e0a 100644
--- a/src/GuiApp/Avalonia/FileTime.GuiApp/Resources/Styles.axaml
+++ b/src/GuiApp/Avalonia/FileTime.GuiApp/Resources/Styles.axaml
@@ -1,5 +1,13 @@
 <Styles xmlns="https://github.com/avaloniaui"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+    <Styles.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+                <ResourceInclude Source="avares://FileTime.GuiApp/Resources/Converters.axaml"></ResourceInclude>
+            </ResourceDictionary.MergedDictionaries>
+        </ResourceDictionary>
+    </Styles.Resources>
+
     <FluentTheme Mode="Dark" />
 
     <Style Selector="TextBlock">
@@ -20,15 +28,15 @@
         <Setter Property="Background" Value="Transparent" />
         <Setter Property="HorizontalAlignment" Value="Stretch" />
     </Style>
-    <Style Selector="ListBox.ContentListView &gt; ListBoxItem">
+    <Style Selector="ListBox.ContentListView > ListBoxItem">
         <Setter Property="Margin" Value="0" />
         <Setter Property="Padding" Value="0" />
         <Setter Property="Background" Value="Transparent" />
         <Setter Property="HorizontalContentAlignment" Value="Stretch" />
         <Setter Property="HorizontalAlignment" Value="Stretch" />
-        <!--Setter Property="ContextMenu">
-				<ContextMenu Items="{Binding Converter={StaticResource ContextMenuGenerator}}"/>
-			</Setter-->
+        <Setter Property="ContextMenu">
+            <ContextMenu Items="{Binding Converter={StaticResource ContextMenuGenerator}}" />
+        </Setter>
     </Style>
 
     <Style Selector="Grid.SidebarContainerPresenter">
diff --git a/src/GuiApp/Avalonia/FileTime.GuiApp/Services/LinuxContextMenuProvider.cs b/src/GuiApp/Avalonia/FileTime.GuiApp/Services/LinuxContextMenuProvider.cs
new file mode 100644
index 0000000..8d25bcc
--- /dev/null
+++ b/src/GuiApp/Avalonia/FileTime.GuiApp/Services/LinuxContextMenuProvider.cs
@@ -0,0 +1,11 @@
+using FileTime.Core.Models;
+
+namespace FileTime.GuiApp.Services;
+
+public class LinuxContextMenuProvider : IContextMenuProvider
+{
+    public List<object> GetContextMenuForFolder(IContainer container)
+    {
+        return new List<object>();
+    }
+}
\ No newline at end of file
diff --git a/src/GuiApp/Avalonia/FileTime.GuiApp/Services/WindowsContextMenuProvider.cs b/src/GuiApp/Avalonia/FileTime.GuiApp/Services/WindowsContextMenuProvider.cs
new file mode 100644
index 0000000..a8c259e
--- /dev/null
+++ b/src/GuiApp/Avalonia/FileTime.GuiApp/Services/WindowsContextMenuProvider.cs
@@ -0,0 +1,249 @@
+using System.Diagnostics;
+using System.Runtime.InteropServices;
+using Avalonia.Controls;
+using Avalonia.Media;
+using FileTime.Core.Models;
+using FileTime.GuiApp.Helper;
+using FileTime.GuiApp.IconProviders;
+using FileTime.Providers.Local;
+using Microsoft.Win32;
+
+namespace FileTime.GuiApp.Services;
+
+public class WindowsContextMenuProvider : IContextMenuProvider
+{
+    public List<object> GetContextMenuForFolder(IContainer container)
+    {
+        if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) throw new NotSupportedException();
+
+        var menuItems = new List<object>();
+
+        if (container.Provider is ILocalContentProvider)
+        {
+            using var directoryKey = Registry.ClassesRoot.OpenSubKey("Directory");
+            ProcessRegistryKey(directoryKey, menuItems, container!.NativePath!.Path);
+        }
+
+        return menuItems;
+    }
+
+    private void ProcessRegistryKey(RegistryKey? contextMenuContainer, List<object> menuItems, string folderPath)
+    {
+        using var shell = contextMenuContainer?.OpenSubKey("shell");
+        if (shell == null) return;
+
+        var shellSubKeys = shell.GetSubKeyNames();
+
+        foreach (var shellKey in shellSubKeys.Select(k => shell.OpenSubKey(k)).OfType<RegistryKey>())
+        {
+            var textBase = shellKey.GetValue(null) as string ?? shellKey.GetValue("MUIVerb") as string;
+
+            if (textBase == null) continue;
+
+            string? text = null;
+            if (textBase.StartsWith("@"))
+            {
+                var parts = textBase[1..].Split(',');
+                if (parts.Length == 2 && long.TryParse(parts[1], out var parsedResourceId))
+                {
+                    if (parsedResourceId < 0) parsedResourceId *= -1;
+
+                    text = NativeMethodHelpers.GetStringResource(string.Join(',', parts[..^1]), (uint) parsedResourceId);
+                }
+            }
+            else
+            {
+                text = textBase;
+            }
+
+            if (text != null)
+            {
+                text = text.Replace("&", "");
+
+                object? image = null;
+                try
+                {
+                    if (shellKey.GetValue("Icon") is string iconPath)
+                    {
+                        var imagePath = WindowsSystemIconHelper.GetImagePathByIconPath(iconPath);
+                        if (imagePath.Type == Models.ImagePathType.Raw)
+                        {
+                            image = new Image()
+                            {
+                                Source = (IImage) imagePath.Image!
+                            };
+                        }
+                    }
+                }
+                catch
+                {
+                }
+
+                using var commandKey = shellKey.OpenSubKey("command");
+                if (shellKey.GetSubKeyNames().Contains("command") && commandKey?.GetValue(null) is string commandString)
+                {
+                    var item = new MenuItem() {Header = text, Icon = image};
+                    item.Click += (o, e) => MenuItemClick(folderPath, commandString);
+                    menuItems.Add(item);
+                }
+                else if (shellKey.GetValue("ExtendedSubCommandsKey") is string extendedCommands)
+                {
+                    var rootMenu = new MenuItem() {Header = text, Icon = image};
+                    var rootMenuItems = new List<object>();
+
+                    ProcessRegistryKey(Registry.ClassesRoot.OpenSubKey(extendedCommands), rootMenuItems, folderPath);
+
+                    rootMenu.Items = rootMenuItems.ToArray();
+                    menuItems.Add(rootMenu);
+                }
+            }
+        }
+    }
+
+    private static void MenuItemClick(string folderPath, string commandString)
+    {
+        var commandPartsWithoutAp = commandString.Split('\"').ToList();
+        var commandParts = new List<List<string>>();
+
+        for (var i = 0; i < commandPartsWithoutAp.Count; i++)
+        {
+            if (i % 2 == 0)
+            {
+                commandParts.Add(commandPartsWithoutAp[i].Split(' ').ToList());
+            }
+            else
+            {
+                commandParts.Add(new List<string> {commandPartsWithoutAp[i]});
+            }
+        }
+
+        for (var i = 0; i < commandParts.Count; i++)
+        {
+            for (var i2 = 0; i2 < commandParts[i].Count; i2++)
+            {
+                commandParts[i][i2] = commandParts[i][i2].Replace("%1", folderPath).Replace("%V", folderPath);
+            }
+        }
+
+        var commandPartsWithoutEmpty = commandParts.SelectMany(c => c).Where(c => !string.IsNullOrWhiteSpace(c)).ToList();
+
+        if (commandPartsWithoutEmpty.Count == 1)
+        {
+            Process.Start(commandPartsWithoutEmpty[0]);
+        }
+        else if (commandPartsWithoutEmpty.Count > 1)
+        {
+            var paramStartIndex1 = -1;
+            var paramStartIndex2 = -1;
+            var found = false;
+
+            for (var x = 0; x < commandParts.Count && paramStartIndex1 == -1; x++)
+            {
+                for (var y = 0; y < commandParts[x].Count; y++)
+                {
+                    if (found)
+                    {
+                        paramStartIndex1 = x;
+                        paramStartIndex2 = y;
+                        break;
+                    }
+
+                    if (commandParts[x][y] == commandPartsWithoutEmpty[0])
+                    {
+                        found = true;
+                    }
+                }
+            }
+
+            var arguments = SumList(commandParts, paramStartIndex1, paramStartIndex2);
+
+            try
+            {
+                using var process = new Process();
+                process.StartInfo.FileName = commandPartsWithoutEmpty[0];
+                process.StartInfo.Arguments = arguments;
+                process.Start();
+            }
+            catch
+            {
+                if (commandParts[0].Count > 0)
+                {
+                    var executable = "";
+                    var lastExecutablePart = 0;
+                    for (lastExecutablePart = 0; !File.Exists(executable) && lastExecutablePart < commandParts[0].Count; lastExecutablePart++)
+                    {
+                        executable += (lastExecutablePart == 0 ? "" : " ") + commandParts[0][lastExecutablePart];
+                    }
+
+                    lastExecutablePart--;
+
+                    if (File.Exists(executable))
+                    {
+                        try
+                        {
+                            var (paramStartX, paramStartY) = GetCoordinatesFrom(commandParts, 1, 0, lastExecutablePart);
+                            arguments = SumList(commandParts, paramStartX, paramStartY);
+
+                            using var process = new Process();
+                            process.StartInfo.FileName = executable;
+                            process.StartInfo.Arguments = arguments;
+                            process.Start();
+                        }
+                        catch
+                        {
+                            //TODO: error message
+                        }
+                    }
+                }
+                //TODO: ELSE error message
+            }
+        }
+    }
+
+    private static string SumList(List<List<string>> data, int paramStartIndex1, int paramStartIndex2)
+    {
+        var result = "";
+
+        for (var x = paramStartIndex1; x < data.Count; x++)
+        {
+            if (x % 2 == 1) result += "\"";
+
+            result += string.Join(
+                ' ',
+                x == paramStartIndex1
+                    ? data[x].Skip(paramStartIndex2)
+                    : data[x]
+            );
+
+            if (x % 2 == 1) result += "\"";
+        }
+
+        return result;
+    }
+
+    private static (int, int) GetCoordinatesFrom(List<List<string>> data, int skip, int startX = 0, int startY = 0)
+    {
+        int skipping = 0;
+        var x = startX;
+        var y = startY;
+
+        var resultX = -1;
+        var resultY = -1;
+        for (; x < data.Count && resultX == -1; x++, y = 0)
+        {
+            for (; y < data[x].Count; y++)
+            {
+                if (skipping == skip)
+                {
+                    resultX = x;
+                    resultY = y;
+                    break;
+                }
+
+                skipping++;
+            }
+        }
+
+        return (resultX, resultY);
+    }
+}
\ No newline at end of file
diff --git a/src/GuiApp/Avalonia/FileTime.GuiApp/Views/MainWindow.axaml b/src/GuiApp/Avalonia/FileTime.GuiApp/Views/MainWindow.axaml
index a979ef9..89849e1 100644
--- a/src/GuiApp/Avalonia/FileTime.GuiApp/Views/MainWindow.axaml
+++ b/src/GuiApp/Avalonia/FileTime.GuiApp/Views/MainWindow.axaml
@@ -25,6 +25,18 @@
     Closed="OnWindowClosed"
     TransparencyLevelHint="Blur"
     mc:Ignorable="d">
+    <Window.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+                <ResourceInclude Source="avares://FileTime.GuiApp/Resources/SolarizedDarkTheme.axaml"></ResourceInclude>
+                <ResourceInclude Source="avares://FileTime.GuiApp/Resources/Brushes.axaml"></ResourceInclude>
+                <ResourceInclude Source="avares://FileTime.GuiApp/Resources/Converters.axaml"></ResourceInclude>
+            </ResourceDictionary.MergedDictionaries>
+        </ResourceDictionary>
+    </Window.Resources>
+    <Window.Styles>
+        <StyleInclude Source="avares://FileTime.GuiApp/Resources/Styles.axaml" />
+    </Window.Styles>
 
     <Grid Background="{DynamicResource AppBackgroundBrush}">
         <Grid
@@ -140,7 +152,8 @@
                         </Grid>
                     </Border>
 
-                    <Border Grid.Row="1" CornerRadius="10" Background="{DynamicResource ContainerBackgroundBrush}" Padding="0,10" Margin="10">
+                    <Border Grid.Row="1" CornerRadius="10" Background="{DynamicResource ContainerBackgroundBrush}"
+                            Padding="0,10" Margin="10">
                         <Grid RowDefinitions="Auto,Auto">
 
                             <TextBlock
@@ -152,8 +165,10 @@
                                 Items="{Binding AppState.Places}">
                                 <ItemsRepeater.ItemTemplate>
                                     <DataTemplate x:DataType="vm:PlaceInfo">
-                                        <Grid Classes="SidebarContainerPresenter" PointerPressed="OnHasContainerPointerPressed" Cursor="Hand">
-                                            <StackPanel Orientation="Horizontal" Margin="10,5" HorizontalAlignment="Stretch">
+                                        <Grid Classes="SidebarContainerPresenter"
+                                              PointerPressed="OnHasContainerPointerPressed" Cursor="Hand">
+                                            <StackPanel Orientation="Horizontal" Margin="10,5"
+                                                        HorizontalAlignment="Stretch">
                                                 <Image
                                                     Width="20"
                                                     Height="20"
@@ -172,7 +187,7 @@
                         </Grid>
                     </Border>
 
-					<!--Border Grid.Row="2" CornerRadius="10" Background="{DynamicResource ContainerBackgroundBrush}" Padding="0,10" Margin="10">
+                    <!--Border Grid.Row="2" CornerRadius="10" Background="{DynamicResource ContainerBackgroundBrush}" Padding="0,10" Margin="10">
 						<Grid RowDefinitions="Auto,Auto">
 
 							<TextBlock
@@ -265,7 +280,7 @@
                                         <TextBlock
                                             Margin="5,0,0,0"
                                             VerticalAlignment="Center"
-                                            Text="{Binding CurrentLocation^.Name}" />
+                                            Text="{Binding CurrentLocation^.Name, FallbackValue=Loading...}" />
                                     </StackPanel>
 
                                     <Rectangle
@@ -280,14 +295,7 @@
                     <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>
+                        <Grid ColumnDefinitions="15*,10,40*,10,45*">
 
                             <ListBox
                                 x:CompileBindings="False"
@@ -318,7 +326,7 @@
                             <Grid
                                 Grid.Column="2"
                                 RowDefinitions="Auto,*">
-                                <Grid IsVisible="{Binding AppState.SelectedTab^.CurrentLocation^.IsLoading^}">
+                                <Grid IsVisible="{Binding AppState.SelectedTab^.CurrentLocation^.IsLoading^, FallbackValue=False}">
                                     <Image
                                         Width="40"
                                         Height="40"
@@ -422,11 +430,11 @@
                                 <Grid
                                     IsVisible="{Binding ItemPreviewService.ItemPreview^,Converter={x:Static ObjectConverters.IsNotNull}}">
                                     <TextBlock HorizontalAlignment="Center" Text="Don't know how to preview this item."
-                                               IsVisible="{Binding ItemPreviewService.ItemPreview^.Mode, Converter={StaticResource EqualityConverter}, ConverterParameter={x:Static appCoreModels:ItemPreviewMode.Unknown}}" />
+                                               IsVisible="{Binding ItemPreviewService.ItemPreview^.Mode, Converter={StaticResource EqualityConverter}, ConverterParameter={x:Static appCoreModels:ItemPreviewMode.Unknown},FallbackValue={x:Static appCoreModels:ItemPreviewMode.Unknown}}" />
                                     <TextBlock HorizontalAlignment="Center" Text="Empty"
-                                               IsVisible="{Binding ItemPreviewService.ItemPreview^.Mode, Converter={StaticResource EqualityConverter}, ConverterParameter={x:Static appCoreModels:ItemPreviewMode.Empty}}" />
+                                               IsVisible="{Binding ItemPreviewService.ItemPreview^.Mode, Converter={StaticResource EqualityConverter}, ConverterParameter={x:Static appCoreModels:ItemPreviewMode.Empty},FallbackValue={x:Static appCoreModels:ItemPreviewMode.Unknown}}" />
                                     <ScrollViewer
-                                        IsVisible="{Binding ItemPreviewService.ItemPreview^.Mode, Converter={StaticResource EqualityConverter}, ConverterParameter={x:Static appCoreModels:ItemPreviewMode.Text}}">
+                                        IsVisible="{Binding ItemPreviewService.ItemPreview^.Mode, Converter={StaticResource EqualityConverter}, ConverterParameter={x:Static appCoreModels:ItemPreviewMode.Text},FallbackValue={x:Static appCoreModels:ItemPreviewMode.Unknown}}">
                                         <TextBox
                                             IsReadOnly="True"
                                             x:CompileBindings="False"
@@ -439,11 +447,8 @@
 
                     <Grid Grid.Row="3">
                         <Grid
-                            IsVisible="{Binding AppState.ViewMode^, Converter={StaticResource EqualityConverter},ConverterParameter=RapidTravel}">
-                            <Grid.RowDefinitions>
-                                <RowDefinition Height="1" />
-                                <RowDefinition Height="Auto" />
-                            </Grid.RowDefinitions>
+                            IsVisible="{Binding AppState.ViewMode^, Converter={StaticResource EqualityConverter},ConverterParameter=RapidTravel}"
+                            RowDefinitions="1,Auto">
 
                             <Rectangle
                                 Height="1"