title.rb in axlsx-1.1.0

- old
+ new

@@ -1,10 +1,10 @@
 # encoding: UTF-8
 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
 
     # The cell that holds the text for the title. Setting this property will automatically update the text attribute.
@@ -15,52 +15,52 @@
     # @param [String, Cell] title The cell or string to be used for the chart's title
     def initialize(title="")
       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
       v
     end
 
     # @see cell
     def cell=(v)
       DataTypeValidator.validate 'Title.text', Cell, v
       @cell = v
-      @text = v.value.to_s      
+      @text = v.value.to_s
       v
     end
 
     # Not implemented at this time.
     #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
-    
-    # Serializes the chart title
-    # @param [Nokogiri::XML::Builder] xml The document builder instance this objects xml will be added to.
+
+    # Serializes the object
+    # @param [String] str
     # @return [String]
-    def to_xml(xml)
-      xml[:c].title {
-        unless @text.empty?
-          xml[:c].tx {
-            xml[:c].strRef {
-              xml[:c].f Axlsx::cell_range([@cell])
-              xml[:c].strCache {
-                xml[:c].ptCount :val=>1
-                xml[:c].pt(:idx=>0) {
-                  xml[:c].v @text
-                }
-              }
-            }
-          }
-        end
-        xml[:c].layout
-        xml[:c].overlay :val=>0
-      }      
+    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:layout/>'
+      str << '<c:overlay val="0"/>'
+      str << '</c:title>'
     end
-    
+
   end
 end