Add latest changes from gitlab-org/gitlab@master

1 files changed, 29 insertions, 0 deletions

diff --git a/lib/gitlab/tab_width.rb b/lib/gitlab/tab_width.rb
new file mode 100644
index 00000000000..d33723a2106
--- /dev/null
+++ b/lib/gitlab/tab_width.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module TabWidth
+    extend self
+
+    MIN = 1
+    MAX = 12
+    DEFAULT = 8
+
+    def css_class_for_user(user)
+      return css_class_for_value(DEFAULT) unless user
+
+      css_class_for_value(user.tab_width)
+    end
+
+    private
+
+    def css_class_for_value(value)
+      raise ArgumentError unless in_range?(value)
+
+      "tab-width-#{value}"
+    end
+
+    def in_range?(value)
+      (MIN..MAX).cover?(value)
+    end
+  end
+end