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Diffstat (limited to 'library/Icinga/Data/Tree/TreeNodeIterator.php')
-rw-r--r-- | library/Icinga/Data/Tree/TreeNodeIterator.php | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/library/Icinga/Data/Tree/TreeNodeIterator.php b/library/Icinga/Data/Tree/TreeNodeIterator.php new file mode 100644 index 0000000..cffc9f4 --- /dev/null +++ b/library/Icinga/Data/Tree/TreeNodeIterator.php @@ -0,0 +1,75 @@ +<?php +/* Icinga Web 2 | (c) 2015 Icinga Development Team | GPLv2+ */ + +namespace Icinga\Data\Tree; + +use ArrayIterator; +use RecursiveIterator; + +/** + * Iterator over a tree node's children + */ +class TreeNodeIterator implements RecursiveIterator +{ + /** + * The node's children + * + * @var array + */ + protected $children; + + /** + * Create a new iterator over a tree node's children + * + * @param TreeNode $node + */ + public function __construct(TreeNode $node) + { + $this->children = new ArrayIterator($node->getChildren()); + } + + public function current(): TreeNode + { + return $this->children->current(); + } + + public function key(): int + { + return $this->children->key(); + } + + public function next(): void + { + $this->children->next(); + } + + public function rewind(): void + { + $this->children->rewind(); + } + + public function valid(): bool + { + return $this->children->valid(); + } + + public function hasChildren(): bool + { + return $this->current()->hasChildren(); + } + + public function getChildren(): TreeNodeIterator + { + return new static($this->current()); + } + + /** + * Get whether the iterator is empty + * + * @return bool + */ + public function isEmpty() + { + return ! $this->children->count(); + } +} |