Parallel diff in two columns.

app/views/projects/commits/_parallel_view.html.haml

 / Side-by-side diff view
-- old_lines, new_lines = parallel_diff_lines(project, @commit, diff, file)
-- num_lines = old_lines.length
-
 %div.text-file
   %table
-    - num_lines.times do |index|
-      - new_line = new_lines[index]
-      - old_line = old_lines[index]
-      %tr.line_holder.parallel
-        -# For old line
-        - if old_line.type == :file_created
-          %td.old_line= old_line.num
-          %td.line_content.parallel= "File was created"
-        - elsif old_line.type == :deleted
-          %td.old_line.old= old_line.num
-          %td.line_content{class: "parallel noteable_line old #{old_line.code}", "line_code" => old_line.code}= old_line.content
-        - else old_line.type == :no_change
-          %td.old_line= old_line.num
-          %td.line_content.parallel= old_line.content
-
-        -# For new line
-        - if new_line.type == :file_deleted
-          %td.new_line= new_line.num
-          %td.line_content.parallel= "File was deleted"
-        - elsif new_line.type == :added
-          %td.new_line.new= new_line.num
-          %td.line_content{class: "parallel noteable_line new #{new_line.code}", "line_code" => new_line.code}= new_line.content
-        - else new_line.type == :no_change
-          %td.new_line= new_line.num
-          %td.line_content.parallel= new_line.content
-
-      - if @reply_allowed
-        - comments1 = @line_notes.select { |n| n.line_code == old_line.code }.sort_by(&:created_at)
-        - comments2 = @line_notes.select { |n| n.line_code == new_line.code }.sort_by(&:created_at)
-        - unless comments1.empty? and comments2.empty?
-          = render "projects/notes/diff_notes_with_reply_parallel", notes1: comments1, notes2: comments2
-
+    - each_diff_line(diff, index) do |line, type, line_code, line_new, line_old, raw_line, e|
+      %tr.line_holder.parallel{ id: line_code, class: "#{type}" }
+        - if type != 'match'
+          %td.old_line
+            = link_to raw(type == "new" ? " " : line_old), "##{line_code}", id: line_code
+            - if type == 'old'
+              %td.line_content{class: "parallel noteable_line old #{line_code}", "line_code" => line_code}= line
+            - else
+              %td.line_content.parallel= line
+          %td.new_line{data: {linenumber: line_new}}
+            = link_to raw(type == "old" ? " " : line_new) , "##{line_code}", id: line_code
+            - if type == 'new'
+              %td.line_content.parallel{class: "noteable_line #{type} #{line_code}", "line_code" => line_code}= line
+            - else
+              %td.line_content.parallel= line