KL Window - Make data type field options be a fixed collection of possible values

Author: dukke

kview/src/main/java/dev/ikm/komet/kview/klfields/ComponentFieldOptions.java

@@ -15,8 +15,11 @@
  */
 package dev.ikm.komet.kview.klfields;
 
+import dev.ikm.komet.kview.mvvm.model.DataModelHelper;
+import dev.ikm.komet.layout.KlTerms;
 import dev.ikm.tinkar.component.FeatureDefinition;
 import dev.ikm.tinkar.coordinate.view.calculator.ViewCalculator;
+import dev.ikm.tinkar.entity.ConceptEntity;
 import dev.ikm.tinkar.entity.EntityHandle;
 import dev.ikm.tinkar.terms.ConceptFacade;
 import dev.ikm.tinkar.terms.EntityProxy;
@@ -84,6 +87,13 @@ private static Optional<List<EntityProxy>> optionsForConcept(ViewCalculator view
                     Stream.of(FULLY_QUALIFIED_NAME_DESCRIPTION_TYPE, REGULAR_NAME_DESCRIPTION_TYPE,
                             DEFINITION_DESCRIPTION_TYPE)));
         }
+        // The data type of a pattern field (the Fields pattern of the pattern-definition patterns) is
+        // one of the data types the field editors support: the same fixed set the classic Pattern
+        // window offers in its data type drop-down (DataModelHelper.fetchFieldDefinitionDataTypes).
+        if (conceptNid == KlTerms.FIELD_DATA_TYPE.nid()) {
+            return Optional.of(sortedByName(viewCalculator,
+                    DataModelHelper.fetchFieldDefinitionDataTypes().stream().map(ConceptEntity::toProxy)));
+        }
         return optionsParentForConcept(conceptNid)
                 .map(parent -> sortedByName(viewCalculator, fetchDescendents(viewCalculator, parent)));
     }