/**
* Wrap node
* @param string|DomNode $node Wrapping node, string to create new element node
* @param int $wrap_index Index to insert current node in wrapping node, -1 to append
* @param int $node_index Index to insert wrapping node, null to keep at same position
* @return DomNode Wrapping node
*/
function wrap($node, $wrap_index = -1, $node_index = null)
{
if ($node_index === null) {
$node_index = $this->index();
}
if (!is_object($node)) {
$node = $this->parent->addChild($node, $node_index);
} elseif ($node->parent !== $this->parent) {
$node->changeParent($this->parent, $node_index);
}
$this->changeParent($node, $wrap_index);
return $node;
}
