/**
* Add a display group object (used with cloning)
*
* @param Zend_Form_DisplayGroup $group
* @param string|null $name
* @throws Zend_Form_Exception
* @return Zend_Form
*/
protected function _addDisplayGroupObject(Zend_Form_DisplayGroup $group, $name = null)
{
if (null === $name) {
$name = $group->getName();
if ('' === (string) $name) {
require_once 'Zend/Form/Exception.php';
throw new Zend_Form_Exception('Invalid display group added; requires name');
}
}
$this->_displayGroups[$name] = $group;
$group->setForm($this);
if (!empty($this->_displayGroupPrefixPaths)) {
$this->_displayGroups[$name]->addPrefixPaths($this->_displayGroupPrefixPaths);
}
$this->_order[$name] = $this->_displayGroups[$name]->getOrder();
$this->_orderUpdated = true;
return $this;
}
