A picker control that implements a dropdown list of items which can be selected.
Unlike the
XV.RelationWidget, the collection is stored local to the widget.
The superkind of
XV.CharacteristicPicker.
Accepts a single attribute mapping or an object attribute mapping where the object requires
two properties "colleciton" and "value." This technique can be used to bind the picker
to a collection on a local model in addition to the selected value.
Derived from
enyo.Control.