final class RenderEvents in Drupal 9

Defines events for the render system.

Hierarchy

• class \Drupal\Core\Render\RenderEvents

3 files declare their use of RenderEvents

BlockPageDisplayVariantSubscriber.php in core/modules/block/src/EventSubscriber/BlockPageDisplayVariantSubscriber.php

HtmlRenderer.php in core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php

TestPageDisplayVariantSubscriber.php in core/modules/system/tests/modules/display_variant_test/src/EventSubscriber/TestPageDisplayVariantSubscriber.php

File

core/lib/Drupal/Core/Render/RenderEvents.php, line 8

Namespace

Drupal\Core\Render

final class RenderEvents {

  /**
   * Name of the event when selecting a page display variant to use.
   *
   * This event allows you to select a different page display variant to use
   * when rendering a page. The event listener method receives a
   * \Drupal\Core\Render\PageDisplayVariantSelectionEvent instance.
   *
   * @Event
   *
   * @see \Drupal\Core\Render\PageDisplayVariantSelectionEvent
   * @see \Drupal\Core\Render\MainContent\HtmlRenderer
   * @see \Drupal\block\EventSubscriber\BlockPageDisplayVariantSubscriber
   */
  const SELECT_PAGE_DISPLAY_VARIANT = 'render.page_display_variant.select';

}

Members

Name	Modifiers	Type	Description	Overrides
RenderEvents::SELECT_PAGE_DISPLAY_VARIANT		constant	Name of the event when selecting a page display variant to use.