Add builder pattern for paragraph, lists, tables

lib/ezdoc/xml/numbering.rb

@@ -0,0 +1,58 @@
+# frozen_string_literal: true
+
+module Ezdoc
+  module Xml
+    class Numbering
+      NAMESPACE = "http://schemas.openxmlformats.org/wordprocessingml/2006/main"
+
+      def initialize(lists)
+        @lists = lists
+      end
+
+      def to_xml
+        builder = Nokogiri::XML::Builder.new(encoding: "UTF-8") do |xml|
+          xml.numbering("xmlns:w" => NAMESPACE) do
+            xml.parent.namespace = xml.parent.namespace_definitions.find { |ns| ns.prefix == "w" }
+
+            @lists.each do |list|
+              render_abstract_num(xml, list)
+
+              render_num(xml, list)
+            end
+          end
+        end
+        builder.to_xml
+      end
+
+      private
+
+      def render_abstract_num(xml, list)
+        xml["w"].abstractNum("w:abstractNumId" => list.num_id.to_s) do
+          xml["w"].lvl("w:ilvl" => "0") do
+            xml["w"].start("w:val" => "1")
+            xml["w"].numFmt("w:val" => num_format(list.type))
+            xml["w"].lvlText("w:val" => lvl_text(list.type))
+            xml["w"].lvlJc("w:val" => "left")
+            xml["w"].pPr do
+              xml["w"].ind("w:left" => "720", "w:hanging" => "360")
+            end
+          end
+        end
+      end
+
+      def render_num(xml, list)
+        xml["w"].num("w:numId" => list.num_id.to_s) do
+          xml["w"].abstractNumId("w:val" => list.num_id.to_s)
+        end
+      end
+
+      def num_format(type)
+        type == :bullet ? "bullet" : "decimal"
+      end
+
+      def lvl_text(type)
+        type == :bullet ? "•" : "%1."
+      end
+    end
+  end
+end