I'm trying to programmatically create a nested list of items (for my purposes a maximum of three deep), where only the leaf nodes are drag-able.

So far, I've tried using nested dijit.TitlePanes with multiple dojo.dnd.Sources, however this gets slower the more dojo.dnd.Sources you have (somewhere around 50 or so it becomes unbearable on a fairly decent system).

I took a look at the tree structure, but it looks like the idea of "Handles" was removed from the DND surrounding them, and wasn't able to find a good way to inhibit the dragging of non-leaf nodes.