droppable element visibility

droppable element visibility


Is there a way to forcibly update active droppables and their drop
hitboxes? I have a tree view containing droppables and I would like
for it to expand an item if the user hovers a draggable over it. I
have that feature working insofar as the tree is concerned, however it
screws up drag-and-drop.
There are two problems:
1) After an item expands, any items below it in the tree have moved,
but their hitbox for drag-and-drop remains the same as it was before.
2) Items that were hidden when the dragging started are not eligible
for dropping after becoming visible.
So, is there a way to notify jQuery of these changes, or some other
way to deal with them?
Thanks in advance.