3 namespace Drupal\Core\Render;
6 * Defines events for the render system.
8 final class RenderEvents {
11 * Name of the event when selecting a page display variant to use.
13 * This event allows you to select a different page display variant to use
14 * when rendering a page. The event listener method receives a
15 * \Drupal\Core\Render\PageDisplayVariantSelectionEvent instance.
19 * @see \Drupal\Core\Render\PageDisplayVariantSelectionEvent
20 * @see \Drupal\Core\Render\MainContent\HtmlRenderer
21 * @see \Drupal\block\EventSubscriber\BlockPageDisplayVariantSubscriber
23 const SELECT_PAGE_DISPLAY_VARIANT = 'render.page_display_variant.select';