/**
* Set transfer adapter
*
* @param string|\Zend\File\Transfer\Adapter\AbstractAdapter $adapter
* @return \Zend\Form\Element\File
*/
public function setTransferAdapter($adapter)
{
if ($adapter instanceof AbstractFileAdapter) {
$this->_adapter = $adapter;
} elseif (is_string($adapter)) {
$loader = $this->getPluginLoader(self::TRANSFER_ADAPTER);
$class = $loader->load($adapter);
$this->_adapter = new $class();
} else {
throw new Exception\InvalidArgumentException('Invalid adapter specified');
}
foreach (array('filter', 'validator') as $type) {
$loader = $this->getPluginLoader($type);
$this->_adapter->setPluginLoader($loader, $type);
}
return $this;
}
