Gcr.FilterCollection.prototype.set_callback

function set_callback(callback: Gcr.FilterCollectionFunc): void {
    // Gjs wrapper for gcr_filter_collection_set_callback()
}
  

Set the callback used to filter the objects in the underlying collection. The callback should return true if an object should appear in the filtered collection.

If a null callback is set, then all underlynig objects will appear in the filtered collection.

This will refilter the collection.