Launch a file manager to show the file in its parent directory.
This is only supported native files. It will fail if file is e.g. a http:// uri.
The callback will be called when the operation is completed. It should call gtk.file_launcher.FileLauncher.openContainingFolderFinish to obtain the result.
the parent gtk.window.Window
a gio.cancellable.Cancellable to cancel the operation
a callback to call when the operation is complete
Launch a file manager to show the file in its parent directory.
This is only supported native files. It will fail if file is e.g. a http:// uri.
The callback will be called when the operation is completed. It should call gtk.file_launcher.FileLauncher.openContainingFolderFinish to obtain the result.