bytecode-api/BytecodeApi/Extensions/FileSystemInfoExtensions.cs at master · bytecode77/bytecode-api · GitHub

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using Microsoft.VisualBasic.FileIO;
using System.Runtime.InteropServices;
using System.Runtime.Versioning;

namespace BytecodeApi.Extensions;

/// <summary>
/// Provides a set of <see langword="static" /> methods for interaction with <see cref="FileSystemInfo" /> objects.
/// </summary>
public static class FileSystemInfoExtensions
{
	extension(FileSystemInfo fileSystemInfo)
	{
		/// <summary>
		/// Shows the properties dialog for this file or directory. The dialog closes, when this process exits.
		/// </summary>
		[SupportedOSPlatform("windows")]
		public void ShowPropertiesDialog()
		{
			Check.ArgumentNull(fileSystemInfo);
			Check.FileOrDirectoryNotFound(fileSystemInfo.FullName);

			Native.ShellExecuteInfo info = new()
			{
				StructSize = Marshal.SizeOf<Native.ShellExecuteInfo>(),
				Verb = "properties",
				FileName = fileSystemInfo.FullName,
				Show = 5,
				Mask = 0x50c
			};

			if (!Native.ShellExecuteEx(ref info))
			{
				throw Throw.Win32("Could not open properties dialog.");
			}
		}
		/// <summary>
		/// Sends this file or directory to recycle bin.
		/// </summary>
		[SupportedOSPlatform("windows")]
		public void SendToRecycleBin()
		{
			Check.ArgumentNull(fileSystemInfo);
			Check.FileOrDirectoryNotFound(fileSystemInfo.FullName);

			if (fileSystemInfo is DirectoryInfo && fileSystemInfo.Exists)
			{
				FileSystem.DeleteDirectory(fileSystemInfo.FullName, UIOption.OnlyErrorDialogs, RecycleOption.SendToRecycleBin, UICancelOption.ThrowException);
			}
			else if (fileSystemInfo is FileInfo && fileSystemInfo.Exists)
			{
				FileSystem.DeleteFile(fileSystemInfo.FullName, UIOption.OnlyErrorDialogs, RecycleOption.SendToRecycleBin, UICancelOption.ThrowException);
			}
			else
			{
				throw Throw.UnsupportedType(nameof(fileSystemInfo));
			}
		}
	}
}

[SupportedOSPlatform("windows")]
file static class Native
{
	[DllImport("shell32.dll", CharSet = CharSet.Auto)]
	public static extern bool ShellExecuteEx(ref ShellExecuteInfo execInfo);

	[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
	public struct ShellExecuteInfo
	{
		public int StructSize;
		public uint Mask;
		public nint Handle;
		[MarshalAs(UnmanagedType.LPTStr)]
		public string Verb;
		[MarshalAs(UnmanagedType.LPTStr)]
		public string FileName;
		[MarshalAs(UnmanagedType.LPTStr)]
		public string Parameters;
		[MarshalAs(UnmanagedType.LPTStr)]
		public string Directory;
		public int Show;
		public nint Instance;
		public nint ItemIdList;
		[MarshalAs(UnmanagedType.LPTStr)]
		public string ClassName;
		public nint ClassKey;
		public uint HotKey;
		public nint Icon;
		public nint Process;
	}
}