Fix code preview theme setting for comments, issues, merge requests, and snippets.

Also preserve code preview color scheme in events dashboard.

Assign default colors to all code blocks shown as <pre class="code highlight [color_scheme]">

Closes #1139

1 files changed, 3 insertions, 2 deletions

diff --git a/lib/redcarpet/render/gitlab_html.rb b/lib/redcarpet/render/gitlab_html.rb
index 714261f815c..713d7c39a11 100644
--- a/lib/redcarpet/render/gitlab_html.rb
+++ b/lib/redcarpet/render/gitlab_html.rb
@@ -3,8 +3,9 @@ class Redcarpet::Render::GitlabHTML < Redcarpet::Render::HTML
   attr_reader :template
   alias_method :h, :template
 
-  def initialize(template, options = {})
+  def initialize(template, color_scheme, options = {})
     @template = template
+    @color_scheme = color_scheme
     @project = @template.instance_variable_get("@project")
     @options = options.dup
     super options
@@ -34,7 +35,7 @@ class Redcarpet::Render::GitlabHTML < Redcarpet::Render::HTML
     end
 
     formatter = Rugments::Formatters::HTML.new(
-      cssclass: "code highlight white #{lexer.tag}"
+      cssclass: "code highlight #{@color_scheme} #{lexer.tag}"
     )
     formatter.format(lexer.lex(code))
   end