protected function init()
{
if (!$this->ready) {
$this->enqueue($this->root->getChildren());
// $this->enqueue([$this->root]); //TODO tu je zrejme chyba - otazne - mal by iterator iterovat aj cez root?
$this->ready = TRUE;
}
}
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));
}
}
/**
* Appends a child into the children array.
* If an index is specified, it is possible to override an existing child node with the same index!
*
* This node becomes the direct parent of the inserted child node.
*
* Note: adding to NULL index is only possible by adding to '' (empty string) index.
*
*
* @param INode $node
* @param scalar $index = NULL index
* @return NodeBase the new/inserted node
*/
public function addChild(INode $node, $index = NULL)
{
$node->setParent($this);
if ($index === NULL) {
$this->children[] = $node;
} else {
$this->children[$index] = $node;
}
return $node;
}
/**
* Replaces a node with a new one. Copies all its relationships and resets its child index if it has a parent.
* @internal
*
*
* @param INode $source
* @param mixed $data data for the node
* @param string $hierarchy the hierarchy member string value
* @return INode
*/
protected function replaceNode(INode $source, $data, $hierarchy)
{
/* @var $destination INode */
$destination = $this->createNode($data);
foreach ($source->getChildren() as $index => $child) {
$destination->addChild($child, $index);
}
$parent = $source->getParent();
if ($parent instanceof INode && $parent !== $source) {
$parent->removeChild($parent->getChildIndex($source));
$parent->addChild($destination, $this->getChildIndex($hierarchy, $destination));
}
return $destination;
}
protected static function bf(INode $node)
{
$list = $node->getChildren();
foreach ($list as $child) {
$list = array_merge($list, self::bf($child));
}
return $list;
}