/**
* Retrieve input filter used by this form
*
* @return null|InputFilterInterface
*/
public function getInputFilter()
{
if ($this->object instanceof InputFilterAwareInterface) {
if (null == $this->baseFieldset) {
$this->filter = $this->object->getInputFilter();
} else {
$name = $this->baseFieldset->getName();
if (!$this->filter instanceof InputFilterInterface || !$this->filter->has($name)) {
$filter = new InputFilter();
$filter->setFactory($this->getFormFactory()->getInputFilterFactory());
$filter->add($this->object->getInputFilter(), $name);
$this->filter = $filter;
}
}
}
if (!isset($this->filter)) {
$this->filter = new InputFilter();
$this->filter->setFactory($this->getFormFactory()->getInputFilterFactory());
}
if (!$this->hasAddedInputFilterDefaults && $this->filter instanceof InputFilterInterface && $this->useInputFilterDefaults()) {
$this->attachInputFilterDefaults($this->filter, $this);
$this->hasAddedInputFilterDefaults = true;
}
return $this->filter;
}