In my application user can copy local file:

1. user clicks button “copy file”.
2. file copying starts.
3. user clicks button “cancel copying file” (before file copy done).

I can use CancelableOperation to cancel Future (File.copy), but in this case copy of file is creating even if user canceled the Future.
So I have to delete it myself.

Is it possible to cancel file copying without deleting a copy of file?

This is code:

import 'package:async/async.dart';
...
CancelableOperation? fileCopyingOperation;
...
// user clicks "copy file"
fileCopyingOperation = CancelableOperation.fromFuture(
  File(filePath).copy(filePathNew),
  onCancel: () {},
);
...
// user clicks "cancel copying file"
fileCopyingOperation?.cancel();