private async Task <PPError> RenameAsyncCore(FileRef newFileRef, MessageLoop messageLoop = null)
{
var tcs = new TaskCompletionSource <PPError>();
EventHandler <PPError> handler = (s, e) => { tcs.TrySetResult(e); };
try
{
HandleRename += handler;
if (MessageLoop == null && messageLoop == null)
{
Rename(newFileRef);
}
else
{
Action <PPError> action = new Action <PPError>((e) =>
{
var result = (PPError)PPBFileRef.Rename(this, newFileRef,
new BlockUntilComplete()
);
tcs.TrySetResult(result);
}
);
InvokeHelper(action, messageLoop);
}
return(await tcs.Task);
}
catch (Exception exc)
{
Console.WriteLine(exc.Message);
tcs.SetException(exc);
return(PPError.Aborted);
}
finally
{
HandleRename -= handler;
}
}
/// <summary> /// Rename() renames a file or directory. Argument <code>newFileRef</code> /// must refer to files in the same file system as in this object. It is an /// error to rename a file or directory that is in use. It is not valid to /// rename a file in the external file system. /// </summary> /// <param name="newFileRef">A <code>FileRef</code> corresponding to a new /// file reference.</param> /// <returns>Error code</returns> PPError Rename(FileRef newFileRef) => (PPError)PPBFileRef.Rename(this, newFileRef, new CompletionCallback(OnRename));
