/**
* Add query part to select descendants of $node.
*
* @param \BackBee\NestedNode\AbstractNestedNode $node
* @param boolean $strict If TRUE, $node is excluded from the selection
* @param int $at_level Filter ancestors by their level
* @param string $alias optional, the alias to use
* @return \BackBee\NestedNode\Repository\NestedNodeQueryBuilder
*/
public function andIsDescendantOf(AbstractNestedNode $node, $strict = false, $at_level = null, $alias = null)
{
$this->andRootIs($node->getRoot(), $alias)->andLeftnodeIsUpperThan($node->getLeftnode(), $strict, $alias)->andRightnodeIsLowerThan($node->getRightnode(), $strict, $alias);
if (null !== $at_level) {
$this->andLevelEquals($at_level);
}
return $this;
}
/**
* Returns the new left node from $dest node and position.
*
* @param \BackBee\NestedNode\AbstractNestedNode $dest
* @param string $position
* @return \BackBee\NestedNode\AbstractNestedNode
* @throws InvalidArgumentException Occurs if $position is unknown
*/
private function getNewLeftFromPosition(AbstractNestedNode $dest, $position)
{
switch ($position) {
case 'before':
$newleft = $dest->getLeftnode();
break;
case 'after':
$newleft = $dest->getRightnode() + 1;
break;
case 'firstin':
$newleft = $dest->getLeftnode() + 1;
break;
case 'lastin':
$newleft = $dest->getRightnode();
break;
default:
throw new InvalidArgumentException(sprintf('Unknown position %s to move node', $position));
}
return $newleft;
}
/**
* Is this node is a descendant of the provided one ?
*
* @param \BackBee\NestedNode\AbstractNestedNode $node
* @param Boolean $strict Optional, if TRUE (default) this node is excluded of descendants list
*
* @return Boolean TRUE if this node is a descendant or provided node, FALSE otherwise
*/
public function isDescendantOf(AbstractNestedNode $node, $strict = true)
{
if (true === $strict) {
return $this->getLeftnode() > $node->getLeftnode() && $this->getRightnode() < $node->getRightnode() && $this->getRoot() === $node->getRoot();
} else {
return $this->getLeftnode() >= $node->getLeftnode() && $this->getRightnode() <= $node->getRightnode() && $this->getRoot() === $node->getRoot();
}
}
