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<?php
namespace Drupal\Core\Render;
use Drupal\Component\Plugin\Discovery\DiscoveryInterface;
/**
* Collects available render array element types.
*/
interface ElementInfoManagerInterface extends DiscoveryInterface {
/**
* Retrieves the default properties for the defined element type.
*
* Each of the element types defined by this hook is assumed to have a
* matching theme hook, which should be registered with hook_theme() as
* normal.
*
* For more information about custom element types see the explanation at
* https://www.drupal.org/node/169815.
*
* @param string $type
* The machine name of an element type plugin.
*
* @return array
* An associative array describing the element type being defined. The
* array has a number of possible attributes:
* - #input: boolean indicating whether this element carries a value
* (even if it's hidden).
* - #process: array of callback functions taking $element, $form_state,
* and $complete_form.
* - #after_build: array of callables taking $element and $form_state.
* - #validate: array of callback functions taking $form and $form_state.
* - #element_validate: array of callback functions taking $element and
* $form_state.
* - #pre_render: array of callables taking $element.
* - #post_render: array of callables taking $children and $element.
* - #submit: array of callback functions taking $form and $form_state.
* - #title_display: optional string indicating if and how #title should be
* displayed (see form-element.html.twig).
*
* @see \Drupal\Core\Render\Element\ElementInterface
* @see \Drupal\Core\Render\Element\ElementInterface::getInfo()
*/
public function getInfo($type);
/**
* Retrieves a single property for the defined element type.
*
* @param string $type
* An element type as defined by an element plugin.
* @param string $property_name
* The property within the element type that should be returned.
* @param mixed|null $default
* (Optional) The value to return if the element type does not specify a
* value for the property. Defaults to NULL.
*
* @return mixed
* The property value of the defined element type. Or the provided
* default value, which can be NULL.
*/
public function getInfoProperty($type, $property_name, $default = NULL);
}
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