/**
* Add a child menu node, automatically setting the parent node.
*
* @param NodeInterface $child
*
* @return NodeInterface - The newly added child node.
*/
public function addChild(NodeInterface $child)
{
if ($child instanceof MenuNode) {
$child->setParentObject($this);
}
return parent::addChild($child);
}
/**
* Get children
*
* @return ArrayCollection|ChildrenCollection
*/
public function getChildren()
{
return $this->connectedNode->getChildren();
}
/**
* Create a MenuItem from a NodeInterface instance.
*
* @param NodeInterface $node
*
* @return MenuItem|null If allowEmptyItems is false and this node has
* neither URL nor route nor a content that has a
* route, returns null.
*/
public function createFromNode(NodeInterface $node)
{
$event = new CreateMenuItemFromNodeEvent($node, $this);
$this->dispatcher->dispatch(Events::CREATE_ITEM_FROM_NODE, $event);
if ($event->isSkipNode()) {
if ($node instanceof Menu) {
// create an empty menu root to avoid the knp menu from failing.
return $this->createItem('');
}
return;
}
$item = $event->getItem() ?: $this->createItem($node->getName(), $node->getOptions());
if (empty($item)) {
return;
}
if ($event->isSkipChildren()) {
return $item;
}
return $this->addChildrenFromNode($node->getChildren(), $item);
}
/**
* {@inheritdoc}
*
* @see Knp\Menu.FactoryInterface::createFromNode()
*/
public function createFromNode(NodeInterface $node)
{
$item = $this->createItem($node->getName(), $node->getOptions());
/* @var $childNode NodeInterface */
foreach ($node->getChildren() as $childNode) {
$item->addChild($this->createFromNode($childNode));
}
return $item;
}