private function calculatePrevNext(Branch $siblings, HasNodeInterface $page, $loop)
{
$result = ['prev' => null, 'next' => null];
// zero or one results (current page) means there is nowhere to navigate to
if (1 >= sizeof($siblings->getChildren())) {
return $result;
}
$current = null;
foreach ($siblings->getChildren() as $item) {
if ((string) $item->getRefId() === (string) $page->getId()) {
$current = $item;
break;
}
}
if (null !== $current) {
$result = ['prev' => $this->utility->getPreviousSibling($siblings, $current), 'next' => $this->utility->getNextSibling($siblings, $current)];
}
if ($loop) {
$result['prev'] = $result['prev'] ?: $this->utility->getLastChild($siblings);
$result['next'] = $result['next'] ?: $this->utility->getFirstChild($siblings);
}
return $result;
}
/**
* @param HasNodeInterface $entity
*
* @return NodeVersion
*/
public function setRef(HasNodeInterface $entity)
{
$this->setRefId($entity->getId());
$this->setRefEntityName(ClassLookup::getClass($entity));
return $this;
}
/**
* @param HasNodeInterface $hasNode
*
* @return NodeVersion
*/
public function getNodeVersionFor(HasNodeInterface $hasNode)
{
return $this->findOneBy(array('refId' => $hasNode->getId(), 'refEntityName' => ClassLookup::getClass($hasNode)));
}
