80 lines
1.5 KiB
PHP
80 lines
1.5 KiB
PHP
<?php
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// {{{ICINGA_LICENSE_HEADER}}}
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// {{{ICINGA_LICENSE_HEADER}}}
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namespace Icinga\Data\Tree;
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use SplDoublyLinkedList;
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class Node extends SplDoublyLinkedList implements NodeInterface
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{
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/**
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* The node's value
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*
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* @var mixed
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*/
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protected $value;
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/**
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* Create a new node
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*
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* @param mixed $value The node's value
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*/
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public function __construct($value = null)
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{
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$this->value = $value;
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}
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/**
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* Get the node's value
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*
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* @return mixed
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*/
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public function getValue()
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{
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return $this->value;
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}
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/**
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* Create a new node from the given value and insert the node as the last child of this node
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*
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* @param mixed $value The node's value
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*
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* @return NodeInterface The appended node
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*/
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public function appendChild($value)
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{
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$child = new static($value);
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$this->push($child);
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return $child;
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}
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/**
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* Whether this node has child nodes
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*
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* @return bool
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*/
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public function hasChildren()
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{
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$current = $this->current();
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if ($current === null) {
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$current = $this;
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}
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return ! $current->isEmpty();
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}
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/**
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* Get the node's child nodes
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*
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* @return NodeInterface
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*/
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public function getChildren()
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{
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$current = $this->current();
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if ($current === null) {
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$current = $this;
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}
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return $current;
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}
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}
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