When you configure an edit-combo for a field in a List that uses in-place editing, you can specify that the pick list should be computed by an ajax callback every time the pick list is opened. But this could be slow because an ajax callback if made every time the pick list is opened. You might prefer to dynamically repopulate the pick list when some event occurs and then when the pick list in a row is ultimately shown, no ajax callback would be needed.

In this video we show how this is done.

Download component:
http://alphamediacapture.s3.amazonaws.com/videos/ListInplaceEdit_editcombo.zip