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<?php declare(strict_types=1); |
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/* |
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* This file is part of the feed-io package. |
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* |
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* (c) Alexandre Debril <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace FeedIo\Feed; |
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use FeedIo\Feed\Node\Element; |
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use FeedIo\Feed\Node\ElementInterface; |
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use FeedIo\Feed\Node\ElementIterator; |
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trait ElementsAwareTrait |
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{ |
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/** |
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* @var \ArrayIterator |
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*/ |
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protected $elements; |
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/** |
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* initialize the elements property before use |
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*/ |
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protected function initElements() : void |
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{ |
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$this->elements = new \ArrayIterator(); |
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} |
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/** |
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* @return ElementInterface |
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*/ |
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public function newElement() : ElementInterface |
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{ |
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return new Element(); |
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} |
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/** |
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* @param string $name element name |
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* @return ElementIterator |
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*/ |
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public function getElementIterator(string $name) : ElementIterator |
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{ |
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return new ElementIterator($this->elements, $name); |
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} |
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/** |
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* @param string $name element name |
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* @return boolean true if the element exists |
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*/ |
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public function hasElement(string $name) : bool |
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{ |
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$filter = $this->getElementIterator($name); |
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return $filter->count() > 0; |
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} |
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/** |
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* @param ElementInterface $element |
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* @return $this |
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*/ |
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public function addElement(ElementInterface $element) |
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{ |
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$this->elements->append($element); |
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return $this; |
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} |
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/** |
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* Returns all the item's optional elements |
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* @return iterable |
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*/ |
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public function getAllElements() : iterable |
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{ |
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return $this->elements; |
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} |
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/** |
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* Returns the item's optional elements tag names |
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* @return iterable |
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*/ |
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public function listElements() : iterable |
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{ |
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foreach ($this->elements as $element) { |
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yield ($element->getName()); |
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} |
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} |
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/** |
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* @return \Generator |
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*/ |
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public function getElementsGenerator() : \Generator |
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{ |
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$elements = $this->getAllElements(); |
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foreach ($elements as $element) { |
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yield $element->getName() => $element->getValue(); |
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} |
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} |
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} |
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alexdebril /
feed-io
