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<?php |
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namespace Isolate\LazyObjects\Object\Property; |
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use Isolate\LazyObjects\Exception\InvalidArgumentException; |
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use Isolate\LazyObjects\Object\PropertyAccessor; |
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use Isolate\LazyObjects\Proxy\LazyProperty; |
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/** |
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* @api |
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*/ |
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final class Initializer |
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{ |
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/** |
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* @var array |
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*/ |
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private $initializedProperties; |
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/** |
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* @var PropertyAccessor |
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*/ |
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private $propertyAccessor; |
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public function __construct() |
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{ |
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$this->propertyAccessor = new PropertyAccessor(); |
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$this->initializedProperties = []; |
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} |
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/** |
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* @param array $lazyProperties |
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* @param string $triggerMethod |
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* @param $targetObject |
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* @throws InvalidArgumentException |
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* |
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* @api |
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*/ |
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public function initialize($lazyProperties = [], $triggerMethod, $targetObject) |
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{ |
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foreach ($lazyProperties as $property) { |
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/* @var $property LazyProperty */ |
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$this->validateLazyProperty($property); |
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if ($this->wasInitialized($property)) { |
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continue ; |
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} |
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if (!$property->hasTriggers()) { |
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$this->initializeProperty($property, $targetObject); |
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continue ; |
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} |
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if ($property->isTriggeredBy($triggerMethod)) { |
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$this->initializeProperty($property, $targetObject); |
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continue ; |
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} |
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} |
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} |
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/** |
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* @param $property |
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* @throws InvalidArgumentException |
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*/ |
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private function validateLazyProperty($property) |
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{ |
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if (!$property instanceof LazyProperty) { |
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throw new InvalidArgumentException("Only lazy properties can be initialized"); |
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} |
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} |
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/** |
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* @param LazyProperty $property |
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* @return bool |
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*/ |
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private function wasInitialized(LazyProperty $property) |
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{ |
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return in_array((string) $property->getName(), $this->initializedProperties, true); |
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} |
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/** |
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* @param LazyProperty $property |
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*/ |
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private function markAsInitialized(LazyProperty $property) |
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{ |
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$this->initializedProperties[] = (string) $property->getName(); |
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} |
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/** |
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* @param LazyProperty $property |
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* @param $targetObject |
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*/ |
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private function initializeProperty(LazyProperty $property, $targetObject) |
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{ |
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$defaultValue = $this->propertyAccessor->get($targetObject, (string)$property->getName()); |
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$newValue = $property->getValueInitializer()->initialize($targetObject, $defaultValue); |
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$this->propertyAccessor->set($targetObject, (string)$property->getName(), $newValue); |
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$this->markAsInitialized($property); |
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if ($property->hasInitializationCallback()) { |
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$property->getInitializationCallback()->execute($defaultValue, $newValue, $targetObject); |
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} |
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} |
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} |
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isolate-org /
lazy-objects
