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<?php |
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declare(strict_types = 1); |
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namespace Everlution\Navigation\Navigation; |
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use Everlution\Navigation\Item; |
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use Everlution\Navigation\Matcher\Matcher; |
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use Everlution\Navigation\NavigationItem; |
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use Everlution\Navigation\RootNavigationItem; |
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/** |
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* Class BasicNavigation. |
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* @author Ivan Barlog <[email protected]> |
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*/ |
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class BasicNavigation implements Navigation |
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{ |
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const DEFAULT_MAX_LEVEL = 3; |
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/** @var NavigationItem[] */ |
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private $ancestors = []; |
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/** @var NavigationItem */ |
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private $current = null; |
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/** @var int */ |
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private $maxLevel; |
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/** @var RootNavigationItem */ |
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private $root; |
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public function __construct(RootNavigationItem $root, Matcher $matcher, int $maxLevel = self::DEFAULT_MAX_LEVEL) |
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{ |
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$this->maxLevel = $maxLevel; |
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$this->process($root, $matcher); |
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$this->root = $root; |
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} |
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public function getRoot() |
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{ |
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return $this->root; |
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} |
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/** |
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* @param NavigationItem $item |
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* @return bool |
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*/ |
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public function isAncestor(NavigationItem $item): bool |
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{ |
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$ancestors = $this->ancestors; |
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array_pop($ancestors); |
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return in_array($item, $ancestors); |
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} |
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/** |
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* @param NavigationItem $item |
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* @return bool |
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*/ |
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public function isCurrent(NavigationItem $item): bool |
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{ |
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return $this->getCurrent() === $item; |
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} |
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/** |
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* @return array |
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*/ |
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public function getBreadcrumbs(): array |
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{ |
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return $this->ancestors; |
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} |
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/** |
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* @return NavigationItem |
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* @throws CurrentItemNotMatchedException |
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*/ |
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public function getCurrent(): NavigationItem |
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{ |
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if (!$this->current instanceof NavigationItem) { |
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throw new CurrentItemNotMatchedException(); |
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} |
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return $this->current; |
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} |
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/** |
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* @param Item $item |
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* @param Matcher $matcher |
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* @param int $depth |
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* @return Item|null |
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*/ |
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private function process(Item &$item, Matcher &$matcher, int $depth = 0) |
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{ |
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if ($depth > $this->maxLevel) { |
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return null; |
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} |
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$this->ancestors[$depth] = $item; |
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if ($matcher->isCurrent($item)) { |
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$this->current = $item; |
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array_shift($this->ancestors); |
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return $item; |
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} |
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$childDepth = ++$depth; |
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/** @var NavigationItem $child */ |
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foreach ($item->getChildren() as $child) { |
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$result = $this->process($child, $matcher, $childDepth); |
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if ($result instanceof NavigationItem) { |
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return $result; |
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} |
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} |
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unset($this->ancestors[$depth]); |
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return null; |
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} |
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} |
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Our type inference engine has found a suspicous assignment of a value to a property. This check raises an issue when a value that can be of a given class or a super-class is assigned to a property that is type hinted more strictly.
Either this assignment is in error or an instanceof check should be added for that assignment.