public void reloadLanguage() throws UnknownKeyException {
SwitchLanguage sl = SwitchLanguage.getInstance() ;
// Disable only the menu item of the current language
//TODO Add access to the previously selected language to boost efficiency
GuiLanguage currentLang = sl.getCurrentLanguage() ;
this.frenchLang.setEnabled(
!GuiLanguage.FRENCH.equals(currentLang)) ;
this.englishLang.setEnabled(
!GuiLanguage.ENGLISH.equals(currentLang)) ;