protected function copyNodesRelationsAndReplace(INode $source, INode $destination)
{
foreach ($source->getChildren() as $index => $child) {
/* @var $child INode */
$destination->addChild($child, $index);
}
$parent = $source->getParent();
if ($parent instanceof INode && $parent !== $source) {
$parent->addChild($destination, $parent->getChildIndex($source));
}
}
/**
* Sorts INode's children by key.
*
*
* @param INode $node the root node
* @return void
*/
protected function sortChildren(INode $node)
{
if ($this->sorting !== NULL) {
$children = $node->getChildren();
$node->removeChildren();
$sortedNodes = call_user_func($this->sorting, $children);
foreach ($sortedNodes as $index => $child) {
$this->sortChildren($child);
// recursion
$node->addChild($child, $index);
}
}
return $this;
}
