part way through changing all serialization to use string concatenation prior to dropping Nokogiri dep in production.

1 files changed, 25 insertions, 7 deletions

diff --git a/lib/axlsx/drawing/title.rb b/lib/axlsx/drawing/title.rb
index cc382205..a7b8e715 100644
--- a/lib/axlsx/drawing/title.rb
+++ b/lib/axlsx/drawing/title.rb
@@ -2,7 +2,7 @@
 module Axlsx
   # A Title stores information about the title of a chart
   class Title
-    
+
     # The text to be shown. Setting this property directly with a string will remove the cell reference.
     # @return [String]
     attr_reader :text
@@ -17,9 +17,9 @@ module Axlsx
       self.cell = title if title.is_a?(Cell)
       self.text = title.to_s unless title.is_a?(Cell)
     end
-    
+
     # @see text
-    def text=(v) 
+    def text=(v)
       DataTypeValidator.validate 'Title.text', String, v
       @text = v
       @cell = nil
@@ -30,7 +30,7 @@ module Axlsx
     def cell=(v)
       DataTypeValidator.validate 'Title.text', Cell, v
       @cell = v
-      @text = v.value.to_s      
+      @text = v.value.to_s
       v
     end
 
@@ -38,7 +38,25 @@ module Axlsx
     #def layout=(v) DataTypeValidator.validate 'Title.layout', Layout, v; @layout = v; end
     #def overlay=(v) Axlsx::validate_boolean v; @overlay=v; end
     #def spPr=(v) DataTypeValidator.validate 'Title.spPr', SpPr, v; @spPr = v; end
-    
+
+    def to_xml_string(str = '')
+      str << '<c:title>'
+      unless @text.empty?
+        str << '<c:tx>'
+        str << '<c:strRef>'
+        str << '<c:f>' << Axlsx::cell_range([@cell]) << '</c:f>'
+        str << '<c:strCache>'
+        str << '<c:ptCount val="1"/>'
+        str << '<c:pt idx="0">'
+        str << '<c:v>' << @text << '</c:v>'
+        str << '</c:pt>'
+        str << '</c:strCache>'
+        str << '</c:strRef>'
+        str << '</c:tx>'
+      end
+      str << '</c:title>'
+    end
+
     # Serializes the chart title
     # @param [Nokogiri::XML::Builder] xml The document builder instance this objects xml will be added to.
     # @return [String]
@@ -59,8 +77,8 @@ module Axlsx
         end
         xml[:c].layout
         xml[:c].overlay :val=>0
-      }      
+      }
     end
-    
+
   end
 end