Sets the parent node.
|
public setParent ( |
||
| $parent | ||
/**
* Adds a child node to this node and returns the id of the child for this
* parent.
*
* @param AbstractNode $child
* @return bool
* @throws CircularExceptionException
*/
public function addChild(AbstractNode $child)
{
$key = null;
$newKey = 0;
// check integrity
if ($this->isAncestor($child->id())) {
throw new CircularException('Can not add child. It is my ancestor.');
}
// check if child is itself
if ($child->id() == $this->id) {
throw new CircularException('Can not set itself as a child.');
}
if ($this->hasChildren()) {
if (isset($this->children[$child->id()])) {
// we already have this child
return false;
}
$sibling = $this->lastChild();
$key = $sibling->id();
$this->children[$key]['next'] = $child->id();
}
// add the child
$this->children[$child->id()] = array('node' => $child, 'next' => null, 'prev' => $key);
// tell child I am the new parent
$child->setParent($this);
//clear any cache
$this->clear();
return true;
}
