} );
tb.addButton( create );
ToolbarButton delete = new ToolbarButton( constants.DeleteSelectedUser() );
delete.addListener( new ButtonListenerAdapter() {
public void onClick(Button button, EventObject e) {
final String userName = grid.getSelectionModel().getSelected().getAsString( "userName" ); //NON-NLS
if ( userName != null && Window.confirm( Format.format( constants.AreYouSureYouWantToDeleteUser0(), userName ) ) ) {
RepositoryServiceFactory.getService().deleteUser( userName, new GenericCallback<java.lang.Void>() {
public void onSuccess(Void a) {