Draggable containment area is calculated on start and never updated

[Novac]

When you set containment on a draggable object, the containment area is set on drag start and is not updated if new elements are added.

The error occurs if you do the following:

• Set containment option
• On drag start, insert element into containment area, e.g. a row
• Try to drag the draggable element into the new row (still located within the containment area, but added after drag start)

I have created a JSFiddle to show the problem. However, this is the first time using JSFiddle and I couldn't find JQuery UI in the version I was using, but it does illustrate the problem.

​http://jsfiddle.net/mLc0bnbL/3/

I suggest one of the following:

• Update containment area in the drag event (Could see this being a performance hit)
• Set the containment area after the start event has been triggered.
• Provide a method to run _setContainment manually

[Scott González]

Duplicate of #4911.
This will be addressed in the rewrite with the refresh() method.

[Rouven Bauer]

This might do the trick inside the event handler

$(this).data('uiDraggable')._cacheHelperProportions();
$(this).data('uiDraggable')._setContainment();