/**
* Add unique ARO to registry
*
* @param Zend_Acl_Aro $aro
* @return Zend_Acl_Aro_Registry for fluent interface
*/
public function add($aro, $inherit = null)
{
if (!$aro instanceof Zend_Acl_Aro) {
$aro = new Zend_Acl_Aro($this, $aro, $inherit);
}
if (array_key_exists($aro->getId(), $this->_aro)) {
throw new Zend_Acl_Exception('aro ' . $aro->getId() . ' already registered');
}
$this->_aro[$aro->getId()] = $aro;
return $this;
}
/**
* Returns a score factor for the selected Aro
*
* Ensures that a specific permission context is assigned a higher score
* than an inherited permission
*
* @return integer
*/
protected function _getFactor(Zend_Acl_Aro $aro, $id)
{
if ($aro->getId() == $id) {
return 3;
} elseif ($id != Zend_Acl::ARO_DEFAULT) {
return 2;
}
return 1;
}