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<?php |
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/* |
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* This file is part of the Tidal/WampWatch package. |
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* (c) 2016 Timo Michna <timomichna/yahoo.de> |
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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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*/ |
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namespace Tidal\WampWatch\Model\Property; |
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use ArrayObject; |
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use InvalidArgumentException; |
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use Generator; |
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use Tidal\WampWatch\Model\Contract\Property\CollectionInterface; |
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class Collection extends ArrayObject implements CollectionInterface |
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{ |
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private $itemType; |
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private $validationCallback; |
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public function append($value) |
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{ |
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$this->validate($value); |
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parent::append($value); |
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} |
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private function validate($item) |
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{ |
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$this->validateItemType($item); |
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$this->validateCallback($item); |
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} |
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private function validateItemType($item) |
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{ |
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if (isset($this->itemType) && $type = gettype($item) !== $this->itemType) { |
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throw new InvalidArgumentException("Expected item of type '{$this->itemType}'. -> '$type' given."); |
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} |
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} |
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private function validateCallback($item) |
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{ |
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if (!isset($this->validationCallback)) { |
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return; |
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} |
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$callback = $this->validationCallback; |
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if (!$callback($item)) { |
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throw new InvalidArgumentException('Item failed validation.'); |
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} |
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} |
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public function setItemType($type) |
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{ |
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$this->itemType = (string) $type; |
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} |
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public function has($key) |
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{ |
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return $this->offsetExists($key); |
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} |
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public function set($key, $value) |
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{ |
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$this->offsetSet($key, $value); |
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} |
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public function offsetSet($index, $newValue) |
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{ |
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$this->validate($newValue); |
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parent::offsetSet($index, $newValue); |
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} |
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public function get($key) |
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{ |
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return $this->offsetGet($key); |
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} |
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/** |
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* @return Generator |
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*/ |
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public function getGenerator() |
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{ |
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foreach ($this as $key => $value) { |
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yield $key => $value; |
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} |
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} |
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/** |
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* Registers a callback function to validate new Collection entries. |
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* The callback function must return a boolean value. |
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* When the callback returns false the new item will not be added to the collection. |
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* |
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* @param callable $callback |
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*/ |
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public function setValidationCallback(callable $callback) |
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{ |
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$this->validationCallback = $callback; |
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} |
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} |
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tidal /
WampWatch
