Add latest changes from gitlab-org/gitlab@master

1 files changed, 18 insertions, 2 deletions

diff --git a/app/serializers/diff_file_entity.rb b/app/serializers/diff_file_entity.rb
index 2a5121a2266..af7d1172f17 100644
--- a/app/serializers/diff_file_entity.rb
+++ b/app/serializers/diff_file_entity.rb
@@ -53,7 +53,7 @@ class DiffFileEntity < DiffFileBaseEntity
   end
 
   # Used for inline diffs
-  expose :highlighted_diff_lines, using: DiffLineEntity, if: -> (diff_file, _) { diff_file.text? } do |diff_file|
+  expose :highlighted_diff_lines, using: DiffLineEntity, if: -> (diff_file, options) { inline_diff_view?(options) && diff_file.text? } do |diff_file|
     diff_file.diff_lines_for_serializer
   end
 
@@ -62,5 +62,21 @@ class DiffFileEntity < DiffFileBaseEntity
   end
 
   # Used for parallel diffs
-  expose :parallel_diff_lines, using: DiffLineParallelEntity, if: -> (diff_file, _) { diff_file.text? }
+  expose :parallel_diff_lines, using: DiffLineParallelEntity, if: -> (diff_file, options) { parallel_diff_view?(options) && diff_file.text? }
+
+  private
+
+  def parallel_diff_view?(options)
+    return true unless Feature.enabled?(:single_mr_diff_view)
+
+    # If we're not rendering inline, we must be rendering parallel
+    !inline_diff_view?(options)
+  end
+
+  def inline_diff_view?(options)
+    return true unless Feature.enabled?(:single_mr_diff_view)
+
+    # If nothing is present, inline will be the default.
+    options.fetch(:diff_view, :inline).to_sym == :inline
+  end
 end