How to tell if any parts in ship in the editor

[linuxgurugamer]

Subject says it all.  I'm doing some work on HoloDeck (may release it eventually under a different name at original author's request).  I need to know if, while in the editor, there is anything there.

The docs are not obvious.

Thanks

[wasml]

I've found by poking around that EditorLogic.SortedShipList has only the parts attached to the ship in the editor - so far this has worked for me. If you find different I'd be interested in hearing about it.