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<?php |
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namespace Nayjest\Tree; |
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use Nayjest\Collection\Extended\ObjectCollection; |
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use Traversable; |
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/** |
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* Trait ParentNodeTrait. |
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* |
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* @implements ParentNodeInterface |
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* @see ParentNodeInterface |
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*/ |
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trait ParentNodeTrait |
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{ |
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/** |
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* Collection of child nodes (objects implementing ChildNodeInterface) |
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* @var NodeCollection |
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*/ |
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protected $collection; |
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/** |
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* Returns array containing default child nodes. |
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* |
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* Override this method if you need to implement parent node class that must contain certain children by default. |
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* |
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* @return ChildNodeInterface[] |
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*/ |
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protected function defaultChildren() |
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{ |
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return []; |
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} |
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/** |
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* Initializes collection of child nodes. |
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* |
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* This method is called once when accessing collection first time |
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* or constructing node with children passed to constructor argument. |
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* |
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* @param array $items |
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*/ |
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protected function initializeCollection(array $items) |
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{ |
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/* @var ParentNodeInterface|ParentNodeTrait $this */ |
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$this->collection = new NodeCollection( |
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$this, |
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$items |
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); |
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} |
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/** |
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* Returns collection of child nodes. |
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* |
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* @return \Nayjest\Collection\CollectionInterface|ChildNodeInterface[] |
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*/ |
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public function children() |
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{ |
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if ($this->collection === null) { |
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$this->initializeCollection($this->defaultChildren()); |
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} |
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return $this->collection; |
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} |
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/** |
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* Returns true if collection of child nodes is writable (open for modifications), returns false otherwise. |
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* |
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* @return bool |
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*/ |
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final public function isWritable() |
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{ |
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return $this->children()->isWritable(); |
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} |
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/** |
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* Returns collection containing all descendant nodes. |
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* |
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* @return CollectionInterface|ObjectCollection|ChildNodeInterface[] |
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*/ |
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public function getChildrenRecursive() |
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{ |
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$res = new ObjectCollection(); |
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foreach ($this->children() as $child) { |
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$res->add($child); |
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if ($child instanceof ParentNodeInterface) { |
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$res->addMany($child->getChildrenRecursive()); |
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} |
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} |
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return $res; |
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} |
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/** |
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* Clears collection of child nodes and attaches new children. |
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* |
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* @param Traversable|ChildNodeInterface[] $children |
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* |
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* @return $this |
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*/ |
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public function setChildren($children) |
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{ |
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$this->children()->set($children); |
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return $this; |
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} |
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/** |
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* Attaches child node. |
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* |
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* @param ChildNodeInterface $item |
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* |
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* @return $this |
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*/ |
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public function addChild(ChildNodeInterface $item) |
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{ |
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$this->children()->add($item); |
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return $this; |
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} |
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/** |
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* Attaches list of child nodes. |
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* |
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* @param array|Traversable $children |
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* |
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* @return $this |
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*/ |
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public function addChildren($children) |
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{ |
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$this->children()->addMany($children); |
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return $this; |
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} |
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} |
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Nayjest /
Tree
Loading history...
This check looks for calls to methods that do not seem to exist on a given type. It looks for the method on the type itself as well as in inherited classes or implemented interfaces.
This is most likely a typographical error or the method has been renamed.