add method to read the paragraph style

Author: miko53

lib/docx/containers/paragraph.rb

@@ -22,6 +22,10 @@ def initialize(node, document_properties = {})
           @font_size = @document_properties[:font_size]
         end
 
+        def document=(doc)
+          @document = doc
+        end
+
         # Set text of paragraph
         def text=(content)
           if text_runs.size == 1
@@ -79,17 +83,30 @@ def font_size
           size_tag = @node.xpath('w:pPr//w:sz').first
           size_tag ? size_tag.attributes['val'].value.to_i / 2 : @font_size
         end
-        
+
+        def style
+          return nil unless @document
+
+          if style_property.nil?
+            @document.default_paragraph_style
+          else
+            @document.style_name(style_property.attributes['val'].value)
+          end
+        end
+
         alias_method :text, :to_s
 
         private
 
+        def style_property
+          properties&.at_xpath('w:pStyle')
+        end
+
         # Returns the alignment if any, or nil if left
         def alignment
           alignment_tag = @node.xpath('.//w:jc').first
           alignment_tag ? alignment_tag.attributes['val'].value : nil
         end
-
       end
     end
   end

lib/docx/document.rb

@@ -168,6 +168,18 @@ def replace_entry(entry_path, file_contents)
       @replace[entry_path] = file_contents
     end
 
+    def default_paragraph_style
+      s = @styles.at_xpath("w:styles/w:style[@w:type='paragraph' and @w:default='1']")
+      s = s.at_xpath('w:name')
+      s.attributes['val'].value
+    end
+
+    def style_name(style_id)
+      s = @styles.at_xpath("w:styles/w:style[@w:styleId='#{style_id}']")
+      s = s.at_xpath('w:name')
+      s.attributes['val'].value
+    end
+
     private
 
     def load_styles
@@ -198,7 +210,9 @@ def update
 
     # generate Elements::Containers::Paragraph from paragraph XML node
     def parse_paragraph_from(p_node)
-      Elements::Containers::Paragraph.new(p_node, document_properties)
+      p = Elements::Containers::Paragraph.new(p_node, document_properties)
+      p.document = self
+      p
     end
 
     # generate Elements::Bookmark from bookmark XML node