76 lines
1.4 KiB
PHP
76 lines
1.4 KiB
PHP
<?php
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/* Icinga Web 2 | (c) 2015 Icinga Development Team | GPLv2+ */
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namespace Icinga\Data\Tree;
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use ArrayIterator;
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use RecursiveIterator;
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/**
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* Iterator over a tree node's children
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*/
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class TreeNodeIterator implements RecursiveIterator
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{
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/**
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* The node's children
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*
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* @var ArrayIterator
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*/
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protected $children;
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/**
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* Create a new iterator over a tree node's children
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*
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* @param TreeNode $node
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*/
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public function __construct(TreeNode $node)
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{
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$this->children = new ArrayIterator($node->getChildren());
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}
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public function current(): TreeNode
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{
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return $this->children->current();
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}
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public function key(): int
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{
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return $this->children->key();
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}
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public function next(): void
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{
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$this->children->next();
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}
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public function rewind(): void
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{
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$this->children->rewind();
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}
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public function valid(): bool
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{
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return $this->children->valid();
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}
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public function hasChildren(): bool
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{
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return $this->current()->hasChildren();
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}
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public function getChildren(): TreeNodeIterator
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{
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return new static($this->current());
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}
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/**
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* Get whether the iterator is empty
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*
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* @return bool
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*/
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public function isEmpty()
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{
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return ! $this->children->count();
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}
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}
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