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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * @author: Doug Wilbourne (dougwilbourne@gmail.com) |
| 5 | */ |
| 6 | declare(strict_types=1); |
| 7 | |
| 8 | namespace pvc\struct\tree\node; |
| 9 | |
| 10 | use pvc\interfaces\struct\collection\CollectionFactoryInterface; |
| 11 | use pvc\interfaces\struct\tree\node\TreenodeFactoryInterface; |
| 12 | use pvc\interfaces\struct\tree\node\TreenodeInterface; |
| 13 | use pvc\interfaces\struct\tree\tree\TreeInterface; |
| 14 | use pvc\struct\tree\err\ChildCollectionException; |
| 15 | use pvc\struct\tree\err\TreenodeFactoryNotInitializedException; |
| 16 | use pvc\struct\tree\tree\Tree; |
| 17 | |
| 18 | /** |
| 19 | * Class TreenodeFactory |
| 20 | * |
| 21 | * Tree and TreenodeFactory are mutually dependent. The constructors are set up so that you create |
| 22 | * TreenodeFactory first without its tree dependency, use TreenodeFactory in the construction of a new tree, |
| 23 | * and then go back and set the tree property in TreenodeFactory. Tree factory does all this in the method |
| 24 | * makeTree. |
| 25 | */ |
| 26 | class TreenodeFactory implements TreenodeFactoryInterface |
| 27 | { |
| 28 | /** |
| 29 | * @var TreeInterface |
| 30 | */ |
| 31 | protected TreeInterface $tree; |
| 32 | |
| 33 | /** |
| 34 | * @param CollectionFactoryInterface<TreenodeInterface> $treenodeCollectionFactory |
| 35 | */ |
| 36 | public function __construct( |
| 37 | protected CollectionFactoryInterface $treenodeCollectionFactory, |
| 38 | ) { |
| 39 | } |
| 40 | |
| 41 | public function isInitialized(): bool |
| 42 | { |
| 43 | return isset($this->tree); |
| 44 | } |
| 45 | |
| 46 | /** |
| 47 | * @param Tree $tree |
| 48 | * @return void |
| 49 | */ |
| 50 | public function initialize(TreeInterface $tree): void |
| 51 | { |
| 52 | $this->tree = $tree; |
| 53 | } |
| 54 | |
| 55 | /** |
| 56 | * @return CollectionFactoryInterface<TreenodeInterface> |
| 57 | */ |
| 58 | public function getTreenodeCollectionFactory(): CollectionFactoryInterface |
| 59 | { |
| 60 | if (!$this->isInitialized()) { |
| 61 | throw new TreeNodeFactoryNotInitializedException(); |
| 62 | } |
| 63 | return $this->treenodeCollectionFactory; |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * @return Treenode |
| 68 | * @throws ChildCollectionException|TreenodeFactoryNotInitializedException |
| 69 | */ |
| 70 | public function makeNode(): TreenodeInterface |
| 71 | { |
| 72 | if (!$this->isInitialized()) { |
| 73 | throw new TreeNodeFactoryNotInitializedException(); |
| 74 | } |
| 75 | $treenodeCollection = $this->treenodeCollectionFactory->makeCollection([]); |
| 76 | return new Treenode($treenodeCollection, $this->tree); |
| 77 | } |
| 78 | } |