lib/plurimath/math/function/norm.rb in plurimath-0.6.0 vs lib/plurimath/math/function/norm.rb in plurimath-0.7.0

@@ -4,36 +4,45 @@
 
 module Plurimath
   module Math
     module Function
       class Norm < UnaryFunction
+        attr_accessor :open_paren, :close_paren
+
         def to_asciimath
           parameter_one.is_a?(Table) ? "norm#{parameter_one.to_asciimath}" : super
         end
 
         def to_latex
           "{\\lVert #{parameter_one&.to_latex} \\lVert}"
         end
 
         def to_mathml_without_math_tag
-          first_value = parameter_one&.to_mathml_without_math_tag
-          norm = Utility.ox_element("mo") << "&#x2225;"
-          Utility.update_nodes(
-            Utility.ox_element("mrow"),
-            [
-              norm,
-              first_value,
-              norm,
-            ],
-          )
+          first_value = Array(parameter_one&.to_mathml_without_math_tag)
+          norm = ox_element("mo") << "&#x2225;"
+          first_value = first_value.insert(0, norm) unless open_paren
+          first_value = first_value << norm unless close_paren
+          Utility.update_nodes(ox_element("mrow"), first_value)
         end
 
         def to_omml_without_math_tag(display_style)
-          [
-            r_element("∥"),
-            omml_value(display_style),
-            r_element("∥"),
-          ]
+          array = []
+          array << r_element("∥") unless open_paren
+          array += Array(omml_value(display_style))
+          array << r_element("∥") unless close_paren
+          array
+        end
+
+        def line_breaking(obj)
+          parameter_one.line_breaking(obj)
+          if obj.value_exist?
+            norm_object = self.class.new(Utility.filter_values(obj.value))
+            norm_object.open_paren = true
+            norm_object.close_paren = false
+            obj.update(norm_object)
+            self.close_paren = true
+            self.open_paren = false unless open_paren
+          end
         end
       end
     end
   end
 end