var getTreeClass = function (level) {
  if (level === 0) return 'leaf';
  if (level === 1) return 'parent';
  return 'ancestor';
};

var getDropdownItemStyles = function (top, zIndex, customStyle) {
  var topStyle = top ? 'top:' + top + 'px;' : '';
  var zIndexStyle = zIndex ? 'z-index:' + zIndex + ';' : '';
  return topStyle + zIndexStyle + customStyle;
};

module.exports = {
  getTreeClass: getTreeClass,
  getDropdownItemStyles: getDropdownItemStyles,
};