provide a better default for dispBlanksAs and allow it to be configured

1 files changed, 7 insertions, 0 deletions

diff --git a/lib/axlsx/util/validators.rb b/lib/axlsx/util/validators.rb
index 739a4de2..a161f0d9 100644
--- a/lib/axlsx/util/validators.rb
+++ b/lib/axlsx/util/validators.rb
@@ -290,4 +290,11 @@ module Axlsx
   def self.validate_split_state_type(v)
     RestrictionValidator.validate :split_state_type, [:frozen, :frozen_split, :split], v
   end
+
+  # Requires that the value is a valid "display blanks as" type.
+  # valid types must be one of gap, span, zero
+  # @param [Any] v The value validated
+  def self.validate_display_blanks_as(v)
+    RestrictionValidator.validate :display_blanks_as, [:gap, :span, :zero], v
+  end
 end