New Avalonia.UI based desktop app

Author: dotslashinit-sh

.gitignore

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+<Project>
+  <PropertyGroup>
+    <Nullable>enable</Nullable>
+    <AvaloniaVersion>11.1.0</AvaloniaVersion>
+  </PropertyGroup>
+</Project>

Directory.Build.props

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+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <!--If you are willing to use Windows/MacOS native APIs you will need to create 3 projects.
+    One for Windows with net8.0-windows TFM, one for MacOS with net8.0-macos and one with net8.0 TFM for Linux.-->
+    <TargetFramework>net8.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <BuiltInComInteropSupport>true</BuiltInComInteropSupport>
+    <ApplicationManifest>app.manifest</ApplicationManifest>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Avalonia.Desktop" Version="$(AvaloniaVersion)" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\FileHider\FileHider.csproj" />
+  </ItemGroup>
+</Project>

FileHider.Desktop/FileHider.Desktop.csproj

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+using System;
+
+using Avalonia;
+
+namespace FileHider.Desktop;
+
+class Program
+{
+    // Initialization code. Don't use any Avalonia, third-party APIs or any
+    // SynchronizationContext-reliant code before AppMain is called: things aren't initialized
+    // yet and stuff might break.
+    [STAThread]
+    public static void Main(string[] args) => BuildAvaloniaApp()
+        .StartWithClassicDesktopLifetime(args);
+
+    // Avalonia configuration, don't remove; also used by visual designer.
+    public static AppBuilder BuildAvaloniaApp()
+        => AppBuilder.Configure<App>()
+            .UsePlatformDetect()
+            .WithInterFont()
+            .LogToTrace();
+
+}

FileHider.Desktop/Program.cs

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+<?xml version="1.0" encoding="utf-8"?>
+<assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1">
+  <!-- This manifest is used on Windows only.
+       Don't remove it as it might cause problems with window transparency and embeded controls.
+       For more details visit https://learn.microsoft.com/en-us/windows/win32/sbscs/application-manifests -->
+  <assemblyIdentity version="1.0.0.0" name="AvaloniaTest.Desktop"/>
+
+  <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+    <application>
+      <!-- A list of the Windows versions that this application has been tested on
+           and is designed to work with. Uncomment the appropriate elements
+           and Windows will automatically select the most compatible environment. -->
+
+      <!-- Windows 10 -->
+      <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}" />
+    </application>
+  </compatibility>
+</assembly>

FileHider.Desktop/app.manifest

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+using FileHider.Lib.FilesList;
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FileHider.Lib.FilesList;
+
+public class DirectoryNode : INode
+{
+    public string Name { get; }
+    public DirectoryNode? ParentDirectory { get; }
+
+    static private DirectoryNode _root = new DirectoryNode("", null);
+    static public DirectoryNode RootDir { get { return _root; } }
+    public ObservableCollection<INode> Children { get; }
+
+    private DirectoryNode(string name, DirectoryNode? parent)
+    {
+        Name = name;
+        ParentDirectory = parent;
+        Children = new();
+        if (parent != null)
+        {
+            parent.AddChild(this);
+        }
+    }
+
+    /// <summary>
+    /// Creates a new `DirectoryNode`.
+    /// </summary>
+    /// <param name="name">Name of the directory</param>
+    /// <param name="parent">Parent directory</param>
+    /// <returns>A new DirectoryNode</returns>
+    public static DirectoryNode Create(string name, DirectoryNode parent)
+    {
+        return new(name, parent);
+    }
+
+    /// <summary>
+    /// Returns the virtual realPath to the inside of the parent.
+    /// </summary>
+    /// <returns>`string`: Virtual realPath to the inside of the parent.</returns>
+    public string GetVirtualPath() => (ParentDirectory == null) ? Name : Path.Combine(ParentDirectory.GetVirtualPath(), Name);
+
+    /// <summary>
+    /// Deletes all children inside the parent.
+    /// </summary>
+    public void Delete()
+    {
+        foreach (var child in Children)
+        {
+            child.Delete();
+        }
+        Children.Clear();
+    }
+
+    public void DeleteItem(INode item)
+    {
+        Children.Remove(item);
+    }
+
+    public void AddChild(INode item)
+    {
+        Children.Add(item);
+    }
+}

FileHider.Lib/DirectoryNode.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FileHider.Lib.FilesList;
+
+public class FileNode : INode
+{
+    public string Name { get; }
+    public string RealPath { get; }
+    public DirectoryNode ParentDirectory { get; }
+
+    private FileNode(string realPath, DirectoryNode parent)
+    {
+        RealPath = Path.GetFullPath(realPath);
+        Name = Path.GetFileName(realPath);
+        ParentDirectory = parent;
+        parent.AddChild(this);
+    }
+
+    public static FileNode Create(string realPath, DirectoryNode parent) => new(realPath, parent);
+
+    /// <summary>
+    /// Returns the virtual realPath to the file.
+    /// </summary>
+    /// <returns>`string`: Virtual realPath to the file.</returns>
+    public string GetVirtualPath() => Path.Combine(ParentDirectory.GetVirtualPath(), Name);
+
+    /// <summary>
+    /// Deletes the file (does nothing on a file).
+    /// </summary>
+    public void Delete()
+    {
+    }
+}