feat: add insufficiency message to parent graph

app/presenters/analyze/graph/all_parent.rb

@@ -28,6 +28,10 @@ module Analyze
       def group
         Analyze::Group::Base.new(name: nil, slug: nil, graph: nil)
       end
+
+      def show_irrelevancy_message?(construct:)
+        construct.survey_items.parent_items.count.zero?
+      end
     end
   end
 end

app/presenters/analyze/graph/column/parent/language.rb

@@ -7,9 +7,10 @@ module Analyze
         class Language < ColumnBase
           attr_reader :language, :label
 
-          def initialize(languages:, label:)
+          def initialize(languages:, label:, show_irrelevancy_message:)
             @language = languages
             @label = label
+            @show_irrelevancy_message = show_irrelevancy_message
           end
 
           def basis
@@ -64,6 +65,12 @@ module Analyze
               averages[survey_item]
             end.remove_blanks.average
           end
+
+          def show_irrelevancy_message?(construct:)
+            return false if @show_irrelevancy_message == false
+
+            construct.survey_items.parent_survey_items.count.zero?
+          end
         end
       end
     end

app/presenters/analyze/graph/parents_by_language.rb

@@ -18,10 +18,10 @@ module Analyze
 
       def columns
         [].tap do |array|
-          array << Analyze::Graph::Column::Parent::Language.new(languages: ENGLISH_LANGUAGES, label: ["English", "Speaking"])
-          array << Analyze::Graph::Column::Parent::Language.new(languages: NON_ENGLISH_LANGUAGES, label: ["Non English", "Speaking"])
-          array << Analyze::Graph::Column::Parent::Language.new(languages: UNKNOWN_LANGUAGES, label: ["Unknown"])
-          array << Analyze::Graph::Column::Parent::Language.new(languages: ALL_LANGUAGES, label: ["All", "Parents"])
+          array << Analyze::Graph::Column::Parent::Language.new(languages: ENGLISH_LANGUAGES, label: ["English", "Speaking"], show_irrelevancy_message: false)
+          array << Analyze::Graph::Column::Parent::Language.new(languages: NON_ENGLISH_LANGUAGES, label: ["Non English", "Speaking"], show_irrelevancy_message: false)
+          array << Analyze::Graph::Column::Parent::Language.new(languages: UNKNOWN_LANGUAGES, label: ["Unknown"], show_irrelevancy_message: false)
+          array << Analyze::Graph::Column::Parent::Language.new(languages: ALL_LANGUAGES, label: ["All", "Parents"], show_irrelevancy_message: nil)
         end
       end