/**
* Builds tree based on its nodes registry and hierarchy configuration
* if structure update required.
*/
public function build()
{
if ($this->updateRequired) {
$this->updateRequired = false;
foreach ($this->nodes as $node) {
if ($node->parent()) {
$node->unlock()->detach();
}
}
$this->root->addChildren($this->builder->build($this->hierarchy, $this->nodes->toArray()));
foreach ($this->nodes as $node) {
if ($node->parent() === $this->root || $this->nodes->contains($node->parent())) {
$node->lock();
}
}
}
}
private function checkParentRelation(ParentNodeInterface $parent = null)
{
if ($parent === null) {
throw new NoParentException();
}
if (!$parent->isWritable()) {
throw new ReadonlyNodeModifyException();
}
if ($this->isLocked()) {
throw new LockedNodeException();
}
}