Hi,
it was requested some time ago, but back then it wasn't possible to implement. Current situation is that it's quite possible (due to internal changes since that moment), but not implemented yet. And it would be implemented in file list, not in view mode, which is just a preview not capable of handling such things.
Need to give it a try. Technically it should be a custom view like the one you get from :!find %u
, but with different presentation (like a tree instead of file list). So you can try using :!find %u
or equivalent for now.