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<?php |
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declare(strict_types=1); |
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namespace Everlution\Navigation\Builder; |
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use Everlution\Navigation\ContainerInterface; |
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use Everlution\Navigation\Item\ItemInterface; |
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use Everlution\Navigation\Item\NestableInterface; |
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use Everlution\Navigation\Item\SortableInterface; |
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use Everlution\Navigation\Helper\ItemHelper; |
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use Everlution\Navigation\MutableContainer; |
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use Everlution\Navigation\OrderedContainer; |
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/** |
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* Class NavigationBuilder. |
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* |
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* @author Ivan Barlog <[email protected]> |
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*/ |
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class NavigationBuilder |
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{ |
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/** @var MatcherInterface */ |
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private $matcher; |
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/** @var ContainerInterface */ |
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private $container; |
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/** @var RootNode */ |
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private $root; |
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/** @var ItemInterface[] */ |
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private $stack = []; |
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/** @var ParentNode[] */ |
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private $used = []; |
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/** @var ParentNode */ |
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private $current; |
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public function __construct(ContainerInterface $container, MatcherInterface $matcher) |
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{ |
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$this->matcher = $matcher; |
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$this->container = new OrderedContainer($container); |
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$this->build(); |
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} |
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/** |
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* @return ItemInterface[] |
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* |
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* @throws NoCurrentItemFoundException |
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*/ |
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public function getBreadcrumbs(): array |
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{ |
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if (empty($this->stack)) { |
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$this->getRootItem($this->getCurrent()); |
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$this->stack = array_reverse($this->stack); |
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$this->stack = array_map( |
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function (ItemInterface $item) { |
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return $this->used[ItemHelper::getIdentifier($item)]; |
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}, |
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$this->stack |
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); |
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} |
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return $this->stack; |
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} |
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/** |
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* @param ItemInterface $item |
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* |
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* @return bool |
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* |
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* @throws NoCurrentItemFoundException |
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*/ |
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public function isAncestor(ItemInterface $item): bool |
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{ |
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$ancestors = $this->getBreadcrumbs(); |
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array_pop($ancestors); |
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return in_array( |
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$item, |
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array_map( |
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function (ParentNode $node) { |
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return $node->getItem(); |
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}, |
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$ancestors |
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) |
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); |
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} |
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/** |
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* @return ItemInterface |
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* |
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* @throws NoCurrentItemFoundException |
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*/ |
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public function getCurrent(): ItemInterface |
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{ |
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if (!$this->current) { |
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throw new NoCurrentItemFoundException(); |
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} |
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return $this->current->getItem(); |
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} |
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public function getCurrentNode(): ParentNode |
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{ |
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if (!$this->current) { |
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throw new NoCurrentItemFoundException(); |
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} |
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return $this->current; |
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} |
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public function getRoot(): RootNode |
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{ |
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return $this->root; |
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} |
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private function build() |
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{ |
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$this->root = new RootNode(); |
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foreach ($this->container->getItems() as $item) { |
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if ($item instanceof NestableInterface) { |
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$this->getRootItem($item); |
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$this->addItemsFromStack(); |
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continue; |
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} |
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$this->addItem($this->root, $item); |
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} |
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foreach ($this->root->getChildren() as $item) { |
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$this->reorder($item); |
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} |
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} |
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private function reorder(ParentNode $item) |
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{ |
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$children = $item->getChildren(); |
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foreach ($children as $child) { |
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$this->reorder($child); |
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} |
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if (false === empty($children)) { |
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uasort($children, [$this, 'ascending']); |
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$item->setChildren($children); |
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} |
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} |
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private function ascending(ParentNode $first, ParentNode $second) |
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{ |
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if (false === ($firstNode = $first->getItem()) instanceof SortableInterface) { |
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return 0; |
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} |
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if (false === ($secondNode = $second->getItem()) instanceof SortableInterface) { |
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return 1; |
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} |
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return $firstNode->getOrder() <=> $secondNode->getOrder(); |
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} |
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private function getParent(NestableInterface $item): ItemInterface |
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{ |
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return $this->container->get($item->getParent()); |
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} |
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private function getRootItem(ItemInterface $item): ?ItemInterface |
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{ |
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$this->stack[] = $item; |
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if (!$item instanceof NestableInterface) { |
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return null; |
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} |
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return $this->getRootItem($this->getParent($item)); |
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} |
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private function addItemsFromStack(): void |
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{ |
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$root = $this->root; |
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while ($item = array_pop($this->stack)) { |
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$this->addItem($root, $item); |
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$root = $root->get(ItemHelper::getIdentifier($item)); |
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} |
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} |
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private function addItem(RootNode $root, ItemInterface $item): void |
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{ |
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$name = ItemHelper::getIdentifier($item); |
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if (array_key_exists($name, $this->used)) { |
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return; |
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} |
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$parentNode = new ParentNode($item, $root); |
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$this->used[$name] = $parentNode; |
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$root->addChild($parentNode); |
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$this->setCurrentItem($parentNode); |
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} |
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private function setCurrentItem(ParentNode $node): void |
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{ |
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if (!$this->current && $this->matcher->isCurrent($node->getItem())) { |
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$this->current = $node; |
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} |
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} |
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} |
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|
everlutionsk /
navigation
