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<?php
/**
* Joomla! Content Management System
*
* @copyright (C) 2019 Open Source Matters, Inc. <https://www.joomla.org>
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
namespace Joomla\CMS\Tree;
// phpcs:disable PSR1.Files.SideEffects
\defined('_JEXEC') or die;
// phpcs:enable PSR1.Files.SideEffects
/**
* Interface for a node class
*
* @since 4.0.0
*/
interface NodeInterface extends ImmutableNodeInterface
{
/**
* Set the parent of this node
*
* If the node already has a parent, the link is unset
*
* @param NodeInterface $parent NodeInterface for the parent to be set
*
* @return void
*
* @since 4.0.0
*/
public function setParent(NodeInterface $parent);
/**
* Add child to this node
*
* If the child already has a parent, the link is unset
*
* @param NodeInterface $child The child to be added.
*
* @return void
*
* @since 4.0.0
*/
public function addChild(NodeInterface $child);
/**
* Remove a specific child
*
* @param NodeInterface $child Child to remove
*
* @return void
*
* @since 4.0.0
*/
public function removeChild(NodeInterface $child);
/**
* Function to set the left or right sibling of a node
*
* @param NodeInterface $sibling NodeInterface object for the sibling
* @param boolean $right If set to false, the sibling is the left one
*
* @return void
*
* @since 4.0.0
*/
public function setSibling(NodeInterface $sibling, $right = true);
}