public ResourceHandle PerformOperation(Uri uri, ResourceOperation operation, object arg)
{
var sink = new FileOperationProgressSink();
var op = InitOperation(uri, operation, arg, sink);
return(FinishOperation(op, sink));
}
private ResourceHandle FinishOperation(IFileOperation operation, FileOperationProgressSink sink)
{
operation.PerformOperations();
//await sink.WhenCompleted();
var item = sink.CreatedItems.LastOrDefault();
if (item != null)
{
return(new ShellFileHandle(item, this));
}
else
{
return(null);
}
}
/// <summary>
/// 進捗通知クラスとオーナーウィンドウを指定して、
/// <see cref="FileOperation" />クラスの新しいインスタンスを初期化します。
/// </summary>
/// <param name="progress">進捗通知クラス。</param>
/// <param name="ownerWindow">オーナーウィンドウ。</param>
public FileOperation(FileOperationProgress progress, Window ownerWindow)
{
this.fileOperation = (IFileOperation)Activator.CreateInstance(FileOperationType);
if (progress != null)
{
this.progressSink = new FileOperationProgressSink(progress);
this.cookie = this.fileOperation.Advise(this.progressSink);
}
if (ownerWindow != null)
{
var windowHelper = new WindowInteropHelper(ownerWindow);
this.fileOperation.SetOwnerWindow(windowHelper.Handle);
}
}
public Task <ResourceHandle> PerformOperationAsync(Uri uri, ResourceOperation operation, object arg, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
var sink = new FileOperationProgressSink(cancellationToken);
var op = InitOperation(uri, operation, arg, sink);
cancellationToken.ThrowIfCancellationRequested();
return(Task.Run(
() => {
try{
return FinishOperation(op, sink);
}catch (OperationCanceledException)
{
cancellationToken.ThrowIfCancellationRequested();
throw;
}
}, cancellationToken
));
}
/// <summary>
/// Release all resources used by <see cref="FileOperation" /> class
/// and optionally releases managed resources.
/// </summary>
/// <param name="disposing">
/// <c>true</c> to release both managed and unmanaged resources.
/// <c>false</c> to release only unmanaged resources.
/// </param>
public void Dispose(bool disposing)
{
if (!this.disposed)
{
if (disposing)
{
}
// Release unmanaged resources.
if (this.progressSink != null)
{
this.fileOperation.Unadvise(this.cookie);
this.progressSink = null;
}
Marshal.FinalReleaseComObject(this.fileOperation);
this.fileOperation = null;
this.disposed = true;
}
}
private IFileOperation CreateOperation(ResourceOperation operation, IShellItem source, IShellItem target, string name, FileAttributes attributes, IPropertyChangeArray properties, FileOperationProgressSink sink)
{
var op = Shell32.CreateFileOperation();
op.Advise(sink);
op.SetOwnerWindow(OwnerHwnd);
op.SetOperationFlags(0x0400 | 0x0004 | 0x0200 | 0x00100000);
switch (operation)
{
case ResourceOperation.Create:
op.NewItem(source, attributes, name, null, null);
break;
case ResourceOperation.Delete:
op.DeleteItem(source, null);
break;
case ResourceOperation.Move:
if (target == null)
{
op.RenameItem(source, name, null);
}
else
{
op.MoveItem(source, target, name, null);
}
break;
case ResourceOperation.Copy:
op.CopyItem(source, target, name, null);
break;
}
return(op);
}
private IFileOperation InitOperation(Uri uri, ResourceOperation operation, object arg, FileOperationProgressSink sink)
{
IShellItem source = null, target = null;
string name = null;
FileAttributes attributes = 0;
IPropertyChangeArray properties = null;
switch (operation)
{
case ResourceOperation.Create:
attributes = (FileAttributes)arg;
name = HttpUtility.UrlDecode(uri.Segments[uri.Segments.Length - 1]);
uri = new Uri(uri, ".");
source = GetItem(uri);
break;
case ResourceOperation.Delete:
source = GetItem(uri);
break;
case ResourceOperation.Move:
source = GetItem(uri);
name = arg as string;
if (name == null)
{
uri = (Uri)arg;
name = HttpUtility.UrlDecode(uri.Segments[uri.Segments.Length - 1]);
uri = new Uri(uri, ".");
target = GetItem(uri);
}
break;
case ResourceOperation.Copy:
source = GetItem(uri);
uri = (Uri)arg;
name = HttpUtility.UrlDecode(uri.Segments[uri.Segments.Length - 1]);
uri = new Uri(uri, ".");
target = GetItem(uri);
break;
default:
throw new NotImplementedException();
}
return(CreateOperation(operation, source, target, name, attributes, properties, sink));
}
