gistfile1.js

.config(function($httpProvider, $translateProvider) {
 … //seen before
})

// Service definition
.factory(‘Language’, function ($translate) {
 //add the languages you support here. ar stands for arabic
 var rtlLanguages = [‘ar’];

 var isRtl = function() {
 var languageKey = $translate.proposedLanguage() || $translate.use();
 for (var i=0; i<rtlLanguages.length; i+=1) {
  if (languageKey.indexOf(rtlLanguages[i])>-1) 
    return true;
  }
  return false; 
 };

 //public api
 return {
  isRtl: isRtl
 };
});