/// <summary>
/// Refresh the contents of the directory.
/// </summary>
public void Refresh(StandardIcons?iconSize = default)
{
if (iconSize is null)
{
iconSize = _IconSize;
}
_Children.Clear();
_Folders.Clear();
FileObject fobj;
DirectoryObject dobj;
IShellItem shitem = null;
IShellFolder shfld;
IEnumIDList enumer;
MemPtr mm;
var mm2 = new MemPtr();
string fp;
string pname = ParsingName;
if (pname is object && pname.LastIndexOf(@"\") == pname.Length - 1)
{
pname = pname.Substring(0, pname.Length - 1);
}
var argriid = Guid.Parse(ShellIIDGuid.IShellItem);
var res = NativeShell.SHCreateItemFromParsingName(ParsingName, IntPtr.Zero, ref argriid, ref shitem);
_IconSize = (StandardIcons)iconSize;
int?argiIndex = null;
_Icon = Resources.GetFileIcon(ParsingName, FileObject.StandardToSystem(_IconSize), iIndex: ref argiIndex);
_IconImage = Resources.GetFileIconWPF(ParsingName, FileObject.StandardToSystem(_IconSize));
if (res == HResult.Ok)
{
var argbhid = Guid.Parse(ShellBHIDGuid.ShellFolderObject);
var argriid1 = Guid.Parse(ShellIIDGuid.IShellFolder2);
shitem.BindToHandler(IntPtr.Zero, ref argbhid, ref argriid1, out shfld);
_SysInterface = shfld;
shfld.EnumObjects(IntPtr.Zero, ShellFolderEnumerationOptions.Folders | ShellFolderEnumerationOptions.IncludeHidden | ShellFolderEnumerationOptions.NonFolders | ShellFolderEnumerationOptions.InitializeOnFirstNext, out enumer);
if (enumer != null)
{
var glist = new List <string>();
uint cf;
var x = IntPtr.Zero;
string pout;
// mm.AllocCoTaskMem((MAX_PATH * 2) + 8)
mm2.Alloc(NativeShell.MAX_PATH * 2 + 8);
do
{
cf = 0U;
mm2.ZeroMemory(0L, NativeShell.MAX_PATH * 2 + 8);
res = enumer.Next(1U, out x, out cf);
mm = x;
if (cf == 0L)
{
break;
}
if (res != HResult.Ok)
{
break;
}
mm2.IntAt(0L) = 2;
// shfld.GetAttributesOf(1, mm, attr)
shfld.GetDisplayNameOf(mm, (uint)ShellItemDesignNameOptions.ParentRelativeParsing, mm2.handle);
MemPtr inv;
if (IntPtr.Size == 4)
{
inv = (IntPtr)mm2.IntAt(1L);
}
else
{
inv = (IntPtr)mm2.LongAt(1L);
}
if (inv.Handle != IntPtr.Zero)
{
if (inv.CharAt(0L) != '\0')
{
fp = (string)inv;
var lpInfo = new SHFILEINFO();
// Dim sgfin As ShellFileGetAttributesOptions = 0,
// sgfout As ShellFileGetAttributesOptions = 0
int iFlags = User32.SHGFI_PIDL | User32.SHGFI_ATTRIBUTES;
lpInfo.dwAttributes = 0;
x = User32.SHGetItemInfo(mm.Handle, 0, ref lpInfo, Marshal.SizeOf(lpInfo), iFlags);
if (ParsingName is object)
{
if (pname.LastIndexOf(@"\") == pname.Length - 1)
{
pname = pname.Substring(0, pname.Length - 1);
}
pout = $@"{pname}\{fp}";
}
else
{
pout = fp;
}
if (lpInfo.dwAttributes == 0)
{
lpInfo.dwAttributes = (int)FileTools.GetFileAttributes(pout);
}
FileAttributes drat = (FileAttributes)(int)(lpInfo.dwAttributes);
if ((lpInfo.dwAttributes & (int)FileAttributes.Directory) == (int)FileAttributes.Directory && !File.Exists(pout))
{
dobj = new DirectoryObject(pout, _IsSpecial, false);
dobj.Parent = this;
dobj.IconSize = _IconSize;
_Children.Add(dobj);
_Folders.Add(dobj);
}
else
{
fobj = new FileObject(pout, _IsSpecial, true, _IconSize);
fobj.Parent = this;
fobj.IconSize = _IconSize;
_Children.Add(fobj);
}
}
inv.CoTaskMemFree();
}
mm.CoTaskMemFree();
}while (res == HResult.Ok);
mm2.Free();
}
}
OnPropertyChanged(nameof(Folders));
OnPropertyChanged(nameof(Icon));
OnPropertyChanged(nameof(IconImage));
OnPropertyChanged(nameof(IconSize));
OnPropertyChanged(nameof(ParsingName));
OnPropertyChanged(nameof(DisplayName));
}
/// <summary>
/// Get a directory object from a file object.
/// The <see cref="FileObject"/> instance passed is retained in the returned <see cref="DirectoryObject"/> object.
/// </summary>
/// <param name="fileObj">A <see cref="FileObject"/></param>
/// <returns>A <see cref="DirectoryObject"/>.</returns>
public static DirectoryObject FromFileObject(FileObject fileObj)
{
var dir = new DirectoryObject(fileObj.Directory, fileObj.IsSpecial);
return(dir);
}
