/**
* Sets parent container
*
* @param Zym_Navigation_Container $parent [optional] new parent to set,
* defaults to null which will set
* no parent
* @return Zym_Navigation_Page
*/
public function setParent(Zym_Navigation_Container $parent = null)
{
// return if the given parent already is parent
if ($parent === $this->_parent) {
return $this;
}
// remove from old parent if page
if (null !== $this->_parent && $this instanceof Zym_Navigation_Page) {
$this->_parent->removePage($this);
}
// set new parent
$this->_parent = $parent;
// add to parent if page and not already a child
if (null !== $this->_parent && $this instanceof Zym_Navigation_Page) {
$this->_parent->addPage($this);
}
return $this;
}
