IDEA-91261 Code Style | Arrangement: grayed out modifiers are available for selection

platform/lang-impl/src/com/intellij/application/options/codeStyle/arrangement/ArrangementAtomNodeComponent.java

@@ -196,6 +196,10 @@ public class ArrangementAtomNodeComponent implements ArrangementNodeComponent {
     myBackgroundColor = myColorsService.getBackgroundColor(selected);
   }
 
+  public boolean isEnabled() {
+    return myEnabled;
+  }
+
   /**
    * Instructs current component that it should {@link #getUiComponent() draw} itself according to the given 'enabled' state.
    *

platform/lang-impl/src/com/intellij/application/options/codeStyle/arrangement/ArrangementRuleEditor.java

@@ -136,7 +136,7 @@ public class ArrangementRuleEditor extends JPanel {
       return;
     }
     ArrangementAtomNodeComponent clickedComponent = getNodeComponentAt(e.getLocationOnScreen());
-    if (clickedComponent == null) {
+    if (clickedComponent == null || !clickedComponent.isEnabled()) {
       return;
     }
     ArrangementAtomMatchCondition chosenCondition = clickedComponent.getMatchCondition();