255 lines
11 KiB
C#
255 lines
11 KiB
C#
//Copyright (c) 2011 Josip Medved <jmedved@jmedved.com> http://www.jmedved.com
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using System;
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using System.IO;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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using System.Windows.Forms;
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namespace RPFTool
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{
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internal class OpenFolderDialog : IDisposable
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{
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/// <summary>
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/// Gets/sets folder in which dialog will be open.
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/// </summary>
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public string InitialFolder { get; set; }
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/// <summary>
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/// Gets/sets directory in which dialog will be open if there is no recent directory available.
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/// </summary>
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public string DefaultFolder { get; set; }
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/// <summary>
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/// Gets selected folder.
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/// </summary>
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public string Folder { get; private set; }
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internal DialogResult ShowDialog(IWin32Window owner)
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{
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if (Environment.OSVersion.Version.Major >= 6)
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{
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return ShowVistaDialog(owner);
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}
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else
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{
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return ShowLegacyDialog(owner);
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}
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}
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private DialogResult ShowVistaDialog(IWin32Window owner)
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{
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var frm = (NativeMethods.IFileDialog)(new NativeMethods.FileOpenDialogRCW());
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uint options;
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frm.GetOptions(out options);
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options |= NativeMethods.FOS_PICKFOLDERS | NativeMethods.FOS_FORCEFILESYSTEM | NativeMethods.FOS_NOVALIDATE | NativeMethods.FOS_NOTESTFILECREATE | NativeMethods.FOS_DONTADDTORECENT;
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frm.SetOptions(options);
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if (this.InitialFolder != null)
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{
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NativeMethods.IShellItem directoryShellItem;
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var riid = new Guid("43826D1E-E718-42EE-BC55-A1E261C37BFE"); //IShellItem
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if (NativeMethods.SHCreateItemFromParsingName(this.InitialFolder, IntPtr.Zero, ref riid, out directoryShellItem) == NativeMethods.S_OK)
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{
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frm.SetFolder(directoryShellItem);
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}
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}
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if (this.DefaultFolder != null)
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{
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NativeMethods.IShellItem directoryShellItem;
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var riid = new Guid("43826D1E-E718-42EE-BC55-A1E261C37BFE"); //IShellItem
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if (NativeMethods.SHCreateItemFromParsingName(this.DefaultFolder, IntPtr.Zero, ref riid, out directoryShellItem) == NativeMethods.S_OK)
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{
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frm.SetDefaultFolder(directoryShellItem);
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}
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}
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if (frm.Show(owner.Handle) == NativeMethods.S_OK)
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{
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NativeMethods.IShellItem shellItem;
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if (frm.GetResult(out shellItem) == NativeMethods.S_OK)
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{
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IntPtr pszString;
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if (shellItem.GetDisplayName(NativeMethods.SIGDN_FILESYSPATH, out pszString) == NativeMethods.S_OK)
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{
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if (pszString != IntPtr.Zero)
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{
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try
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{
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this.Folder = Marshal.PtrToStringAuto(pszString);
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return DialogResult.OK;
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}
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finally
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{
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Marshal.FreeCoTaskMem(pszString);
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}
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}
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}
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}
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}
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return DialogResult.Cancel;
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}
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private DialogResult ShowLegacyDialog(IWin32Window owner)
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{
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using (var frm = new SaveFileDialog())
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{
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frm.CheckFileExists = false;
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frm.CheckPathExists = true;
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frm.CreatePrompt = false;
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frm.Filter = "|" + Guid.Empty.ToString();
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frm.FileName = "any";
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if (this.InitialFolder != null) { frm.InitialDirectory = this.InitialFolder; }
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frm.OverwritePrompt = false;
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frm.Title = "Select Folder";
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frm.ValidateNames = false;
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if (frm.ShowDialog(owner) == DialogResult.OK)
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{
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this.Folder = Path.GetDirectoryName(frm.FileName);
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return DialogResult.OK;
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}
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else
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{
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return DialogResult.Cancel;
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}
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}
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}
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public void Dispose() { } //just to have possibility of Using statement.
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}
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internal static class NativeMethods
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{
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#region Constants
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public const uint FOS_PICKFOLDERS = 0x00000020;
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public const uint FOS_FORCEFILESYSTEM = 0x00000040;
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public const uint FOS_NOVALIDATE = 0x00000100;
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public const uint FOS_NOTESTFILECREATE = 0x00010000;
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public const uint FOS_DONTADDTORECENT = 0x02000000;
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public const uint S_OK = 0x0000;
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public const uint SIGDN_FILESYSPATH = 0x80058000;
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#endregion
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#region COM
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[ComImport, ClassInterface(ClassInterfaceType.None), TypeLibType(TypeLibTypeFlags.FCanCreate), Guid("DC1C5A9C-E88A-4DDE-A5A1-60F82A20AEF7")]
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internal class FileOpenDialogRCW { }
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[ComImport(), Guid("42F85136-DB7E-439C-85F1-E4075D135FC8"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
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internal interface IFileDialog
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{
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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[PreserveSig()]
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uint Show([In, Optional] IntPtr hwndOwner); //IModalWindow
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint SetFileTypes([In] uint cFileTypes, [In, MarshalAs(UnmanagedType.LPArray)] IntPtr rgFilterSpec);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint SetFileTypeIndex([In] uint iFileType);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint GetFileTypeIndex(out uint piFileType);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint Advise([In, MarshalAs(UnmanagedType.Interface)] IntPtr pfde, out uint pdwCookie);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint Unadvise([In] uint dwCookie);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint SetOptions([In] uint fos);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint GetOptions(out uint fos);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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void SetDefaultFolder([In, MarshalAs(UnmanagedType.Interface)] IShellItem psi);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint SetFolder([In, MarshalAs(UnmanagedType.Interface)] IShellItem psi);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint GetFolder([MarshalAs(UnmanagedType.Interface)] out IShellItem ppsi);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint GetCurrentSelection([MarshalAs(UnmanagedType.Interface)] out IShellItem ppsi);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint SetFileName([In, MarshalAs(UnmanagedType.LPWStr)] string pszName);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint GetFileName([MarshalAs(UnmanagedType.LPWStr)] out string pszName);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint SetTitle([In, MarshalAs(UnmanagedType.LPWStr)] string pszTitle);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint SetOkButtonLabel([In, MarshalAs(UnmanagedType.LPWStr)] string pszText);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint SetFileNameLabel([In, MarshalAs(UnmanagedType.LPWStr)] string pszLabel);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint GetResult([MarshalAs(UnmanagedType.Interface)] out IShellItem ppsi);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint AddPlace([In, MarshalAs(UnmanagedType.Interface)] IShellItem psi, uint fdap);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint SetDefaultExtension([In, MarshalAs(UnmanagedType.LPWStr)] string pszDefaultExtension);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint Close([MarshalAs(UnmanagedType.Error)] uint hr);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint SetClientGuid([In] ref Guid guid);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint ClearClientData();
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint SetFilter([MarshalAs(UnmanagedType.Interface)] IntPtr pFilter);
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}
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[ComImport, Guid("43826D1E-E718-42EE-BC55-A1E261C37BFE"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
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internal interface IShellItem
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{
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint BindToHandler([In] IntPtr pbc, [In] ref Guid rbhid, [In] ref Guid riid, [Out, MarshalAs(UnmanagedType.Interface)] out IntPtr ppvOut);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint GetParent([MarshalAs(UnmanagedType.Interface)] out IShellItem ppsi);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint GetDisplayName([In] uint sigdnName, out IntPtr ppszName);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint GetAttributes([In] uint sfgaoMask, out uint psfgaoAttribs);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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uint Compare([In, MarshalAs(UnmanagedType.Interface)] IShellItem psi, [In] uint hint, out int piOrder);
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}
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#endregion
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[DllImport("shell32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
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internal static extern int SHCreateItemFromParsingName([MarshalAs(UnmanagedType.LPWStr)] string pszPath, IntPtr pbc, ref Guid riid, [MarshalAs(UnmanagedType.Interface)] out IShellItem ppv);
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}
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}
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