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<?php |
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/** |
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* This file is part of the core-library package. |
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* |
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* (c) 2017 WEBEWEB |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace WBW\Library\Core\Model\Node; |
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use WBW\Library\Core\Sorting\AlphabeticalTreeNodeInterface; |
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/** |
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* Abstract node. |
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* |
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* @author webeweb <https://github.com/webeweb/> |
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* @package WBW\Library\Core\Model\Node |
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* @abstract |
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*/ |
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abstract class AbstractNode implements AlphabeticalTreeNodeInterface { |
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/** |
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* Index. |
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* |
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* @var array |
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*/ |
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private $index; |
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/** |
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* Id. |
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* |
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* @var string |
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*/ |
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private $id; |
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/** |
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* Children nodes. |
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* |
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* @var AbstractNode[] |
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*/ |
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private $nodes; |
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/** |
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* Parent node. |
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* |
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* @var AbstractNode |
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*/ |
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private $parent; |
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/** |
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* Constructor. |
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* |
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* @param string $id The id. |
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*/ |
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protected function __construct($id) { |
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$this->setId($id); |
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$this->setIndex([]); |
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$this->setNodes([]); |
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$this->setParent(null); |
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} |
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/** |
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* Add a children node. |
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* |
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* @param AbstractNode $node The children node. |
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* @return AbstractNode Returns this node. |
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*/ |
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public function addNode(AbstractNode $node) { |
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$node->parent = $this; |
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$this->index[$node->id] = count($this->nodes); |
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$this->nodes[] = $node; |
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return $this; |
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} |
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/** |
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* Clear the nodes. |
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* |
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* @return AbstractNode Returns this node. |
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*/ |
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public function clearNodes() { |
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foreach ($this->nodes as $node) { |
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$this->removeNode($node); |
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} |
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return $this; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getAlphabeticalTreeNodeLabel() { |
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return $this->id; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getAlphabeticalTreeNodeParent() { |
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return $this->parent; |
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} |
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/** |
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* Get the first children node. |
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* |
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* @return AbstractNode Returns the first node in case of success, null otherwise. |
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*/ |
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public function getFirstNode() { |
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return $this->getNodeAt(0); |
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} |
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/** |
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* Get the last children node. |
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* |
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* @return AbstractNode Returns the last node in case of success, null otherwise. |
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*/ |
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public function getLastNode() { |
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return $this->getNodeAt(count($this->nodes) - 1); |
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} |
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/** |
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* Get the id. |
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* |
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* @return string Returns the id. |
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*/ |
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public function getId() { |
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return $this->id; |
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} |
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/** |
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* Get a node at position. |
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* |
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* @param int $position The position. |
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* @return AbstractNode Returns the node in case of success, null otherwise. |
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*/ |
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public function getNodeAt($position) { |
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if (0 <= $position && $position <= count($this->nodes) - 1) { |
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return $this->nodes[$position]; |
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} |
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return null; |
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} |
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/** |
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* Get a node by id. |
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* |
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* @param string $id The id. |
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* @param bool $recursively Recursively ? |
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* @return AbstractNode Returns a node in case of success, null otherwise. |
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*/ |
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public function getNodeById($id, $recursively = false) { |
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$found = null; |
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if (true === array_key_exists($id, $this->index)) { |
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$found = $this->getNodeAt($this->index[$id]); |
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} |
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if (null === $found && true === $recursively) { |
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foreach ($this->nodes as $current) { |
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$found = $current->getNodeById($id, $recursively); |
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if (null !== $found) { |
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break; |
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} |
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} |
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} |
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return $found; |
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} |
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/** |
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* Get the nodes. |
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* |
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* @return AbstractNode[] Returns the nodes. |
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*/ |
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public function getNodes() { |
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return $this->nodes; |
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} |
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/** |
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* Get the parent. |
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* |
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* @return AbstractNode Returns the parent. |
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*/ |
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public function getParent() { |
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return $this->parent; |
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} |
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/** |
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* Remove a node. |
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* |
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* @param AbstractNode $node The children node. |
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* @return AbstractNode Returns this node. |
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*/ |
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public function removeNode(AbstractNode $node) { |
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if (true === array_key_exists($node->id, $this->index)) { |
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unset($this->nodes[$this->index[$node->id]]); |
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unset($this->index[$node->id]); |
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$node->parent = null; |
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} |
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return $this; |
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} |
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/** |
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* Set the id. |
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* |
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* @param string $id The id. |
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* @return AbstractNode Returns this node. |
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*/ |
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protected function setId($id) { |
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$this->id = $id; |
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return $this; |
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} |
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/** |
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* Set the index. |
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* |
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* @param array $index The index. |
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* @return AbstractNode Returns this node. |
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*/ |
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protected function setIndex(array $index) { |
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$this->index = $index; |
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return $this; |
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} |
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/** |
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* Set the nodes. |
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* |
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* @param AbstractNode[] $nodes The nodes. |
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* @return AbstractNode Returns this node. |
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*/ |
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protected function setNodes(array $nodes) { |
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$this->nodes = $nodes; |
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return $this; |
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} |
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/** |
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* Set the parent. |
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* |
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* @param AbstractNode $parent The parent. |
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* @return AbstractNode Returns this node. |
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*/ |
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protected function setParent(AbstractNode $parent = null) { |
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$this->parent = $parent; |
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return $this; |
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} |
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/** |
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* Size. |
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* |
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* @return int Returns the size. |
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*/ |
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public function size() { |
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return count($this->nodes); |
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} |
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} |
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