Bring container/fraction to the front when pieces are dropped in?

[phet-steele]

Imagine you have two shapes overlapping like this on a lab screen:

I think it would be best that dropping a circle piece into the back one would bring the entire shape to the front. Currently it stays behind:

Just a thought. For phetsims/QA/issues/250.

[KatieWoe]

This also occurs in the game. When focus is on a group of shapes they are in the front, but you can drop pieces in even when they aren't in focus.

[amanda-phet]

If it's not to difficult for @jonathanolson to change, I think this would be fine. But the pieces can easily be rearranged at any time, so I am ok if this needs to be deferred.

[jonathanolson]

Implemented above, can you verify?

[KatieWoe]

This looks good. I did notice that, when dragging the piece, sometimes any active buttons (the plus and minus, the left and right arrow, and the back arrow) will stay up and sometimes they disappear while dragging. I can't seem to determine when this occurs and when it doesn't though.

[jonathanolson]

Hmm, I'm not seeing what I think you mean. Would you be able to record this behavior?

[KatieWoe]

@jonathanolson I think it stays if you've hit the plus/minus sign last, or the arrows, and may disappear otherwise.

[phet-steele]

I think it stays if you've hit the plus/minus sign last, or the arrows, and may disappear otherwise.

That's what I see. Otherwise, bringing objects to the front is working well.

[jonathanolson]

This should be fixed with the above commit. Can you confirm?

[KatieWoe]

Behavior now seems more consistent on master. When a piece is dragged from the tool bar the buttons disappear under both circumstances described above. @jonathanolson

[jonathanolson]

Thanks! I believe that should be everything for this issue, closing.