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<?php |
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namespace DNADesign\Elemental\Services; |
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use DNADesign\Elemental\Models\BaseElement; |
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use InvalidArgumentException; |
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use LogicException; |
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use Psr\SimpleCache\CacheInterface; |
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use SilverStripe\Core\ClassInfo; |
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use SilverStripe\Core\Injector\Injectable; |
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use SilverStripe\Core\Injector\Injector; |
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use SilverStripe\GraphQL\Scaffolding\StaticSchema; |
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class ElementTypeRegistry |
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{ |
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use Injectable; |
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const CACHE_KEY = 'element-types'; |
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/** |
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* @var array |
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*/ |
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protected $elementTypes; |
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/** |
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* @var CacheInterface |
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*/ |
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protected static $cache; |
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/** |
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* Register an element type with this registry |
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* |
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* @param string $elementClass |
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* @return $this |
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*/ |
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public function registerElement($elementClass) |
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{ |
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$singleton = singleton($elementClass); |
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if (!$singleton instanceof BaseElement) { |
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throw new LogicException('Only elements that extend ' . BaseElement::class . ' can be registered'); |
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} |
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// Get the GraphQL type name |
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$typeName = StaticSchema::inst()->typeNameForDataObject($elementClass); |
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$this->elementTypes[] = [ |
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'icon' => $singleton::config()->get('icon'), |
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'name' => $typeName, |
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'class' => $elementClass, |
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'title' => $singleton->getType(), |
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'inlineEditable' => $singleton->inlineEditable(), |
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'editTabs' => $this->getTabProvider()->getTabsForElement($elementClass), |
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// Cast to object as React prop-types expects it. |
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'config' => (object) $singleton::getBlockConfig(), |
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]; |
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return $this; |
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} |
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/** |
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* Get the schema of the element types that are registered |
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* |
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* @return array |
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*/ |
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public function getDefinitions() |
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{ |
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return $this->elementTypes; |
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} |
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/** |
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* Get the element type data for the given instance or class name of an element. |
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* |
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* @param $instanceOrClass |
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* @return mixed |
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*/ |
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public function getDefinition($instanceOrClass) |
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{ |
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if ($instanceOrClass instanceof BaseElement) { |
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$instanceOrClass = get_class($instanceOrClass); |
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} |
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if (!is_string($instanceOrClass)) { |
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throw new InvalidArgumentException(sprintf( |
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'Given argument to %s is not an instance of a class extending %s and is not a string', |
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__METHOD__, |
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BaseElement::class |
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)); |
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} |
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$definitions = $this->getDefinitions(); |
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if (!isset($definitions[$instanceOrClass])) { |
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throw new InvalidArgumentException(sprintf('Unknown element "%s"', $instanceOrClass)); |
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} |
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return $definitions[$instanceOrClass]; |
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} |
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/** |
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* @internal This API is only intended for use while SilverStripe does not have a caching layer for form schema. |
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* See: https://github.com/silverstripe/silverstripe-admin/issues/627 |
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* @return ElementTabProvider |
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*/ |
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protected function getTabProvider() |
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{ |
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// This is a temporary solution until something client side is implemented to reveal tab names. |
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return Injector::inst()->get(ElementTabProvider::class); |
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} |
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/** |
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* Create a registry and attempt to fill it by resolving element types by introspecting class hierarchy |
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* |
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* @return static |
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*/ |
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public static function generate() |
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{ |
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$registry = static::create(); |
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// Look in a cache (if provided) for type details |
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if (static::$cache && ($types = static::$cache->get(self::CACHE_KEY))) { |
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$registry->elementTypes = $types; |
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return $registry; |
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} |
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// Find all element types |
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$classNames = ClassInfo::getValidSubClasses(BaseElement::class); |
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foreach ($classNames as $class) { |
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// Skip the "abstract" element |
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if ($class === BaseElement::class) { |
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continue; |
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} |
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$registry->registerElement($class); |
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} |
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return $registry; |
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} |
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} |
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