Whether the facet is enabled and its values are used to filter search results.
The facet ID.
true
if there is at least one non-idle value and false
otherwise.
true
if a search is in progress and false
otherwise.
The active sortCriterion of the facet.
The values of the facet.
A scoped and simplified part of the headless state that is relevant to the
DateFacet
controller.