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<?php
/* Icinga Web 2 | (c) 2015 Icinga Development Team | GPLv2+ */
namespace Icinga\Web\Dom;
use DOMNode;
use IteratorIterator;
use RecursiveIterator;
/**
* Recursive iterator over a DOMNode
*
* Usage example:
* <code>
* <?php
*
* namespace Icinga\Example;
*
* use DOMDocument;
* use RecursiveIteratorIterator;
* use Icinga\Web\Dom\DomIterator;
*
* $doc = new DOMDocument();
* $doc->loadHTML(...);
* $dom = new RecursiveIteratorIterator(new DomNodeIterator($doc), RecursiveIteratorIterator::SELF_FIRST);
* foreach ($dom as $node) {
* ....
* }
* </code>
*/
class DomNodeIterator implements RecursiveIterator
{
/**
* The node's children
*
* @var IteratorIterator
*/
protected $children;
/**
* Create a new iterator over a DOMNode's children
*
* @param DOMNode $node
*/
public function __construct(DOMNode $node)
{
$this->children = new IteratorIterator($node->childNodes);
}
public function current(): ?DOMNode
{
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 $this->current()->hasChildNodes();
}
public function getChildren(): DomNodeIterator
{
return new static($this->current());
}
}
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