app/assets/javascripts/admin/index_utils/services/switch_class.js.coffee
angular.module("admin.indexUtils").factory "switchClass", ($timeout) ->
return (element, classToAdd, removeClasses, timeout) ->
$timeout.cancel element.timeout if element.timeout
element.removeClass className for className in removeClasses
element.addClass classToAdd
intRegex = /^\d+$/
if timeout && intRegex.test(timeout)
element.timeout = $timeout(->
element.removeClass classToAdd
, timeout, true)