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#2441 closed bug (fixed)

Opened March 02, 2008 01:26PM UTC

Closed April 01, 2008 08:28PM UTC

Last modified February 26, 2009 11:59AM UTC

'missing' over event with nested droppables

Reported by: StrikerNL Owned by: codesquare
Priority: minor Milestone: 1.5
Component: ui.core Version: 1.2.3
Keywords: droppable over event Cc:
Blocked by: Blocking:

There seems to be a bug in droppable, when multiple divs are nested and droppable.

The over event for a parent droppable only gets called once; it doesn't seem to get called when one moves into a child droppable and back into the parent droppable.

The out event for the child does get called. One could, using this, keep track of the droppables that are currently in an 'over' state, and so know when the draggable has moved back into the parent droppable.

Maybe this is by design, it doesn't make for convenient coding however.

My suggestion is to either make the over event be triggered when a draggable leaves a child droppable into a parent droppable, or make it a behaviour option.

I have created a testcase which can be found at (also attached as

The left frame shows the situation as it is now, the right frame shows how I'd prefer it to be. To test it, simply drag the draggable over the droppables and observe the 'over' and 'out' events that get called.

The code I wrote to make the 'fixed' version can be found in ui.droppable.fixed.js. I have also included a patch against jquery ui 1.5b (droppable.patch). I'm not sure if it's good enough for inclusion, someone more expert will have judge that.

Thanks for this great jquery plugin and your time!

Attachments (0)
Change History (6)

Changed March 05, 2008 01:23PM UTC by paul comment:1

owner: paulStrikerNL

I cannot reproduce your issue with the test case you have on your server - can you recheck please? Both sides work exactly the same for me and report all states.

Changed March 05, 2008 01:45PM UTC by StrikerNL comment:2

That is odd, what browser are you using?

When I use the left frame, dragging the purple div over the red one into the yellow one and back out again I get these events (newest first):

''leaving outermost

leaving inner

moving into inner

moving into outermost''

Same for the right frame:

''leaving outermost

moving into outermost

leaving inner

moving into inner

moving into outermost''

The missing "''moving into outermost''" in the left frame is what I'm talking about.

Changed March 31, 2008 03:06PM UTC by paul comment:3

owner: StrikerNLcodesquare

Changed April 01, 2008 08:28PM UTC by scottgonzalez comment:4

resolution: → fixed
status: newclosed

I think the current behavior makes sense for standard droppables. See #2571 for the commits that fixed this for greedy droppables.

If you feel that this behavior should exist for standard droppables, please reopen this ticket.

Changed May 24, 2008 03:39AM UTC by comment:5

milestone: 1.2.4

Milestone 1.2.4 deleted

Changed February 26, 2009 11:59AM UTC by paul comment:6

milestone: → 1.5