Adds "overview" menu tree element as child of a menu tree element.

Parameters

\Drupal\Core\Menu\MenuLinkTreeElement $element: The menu link tree element to add the overview child element to.

1 call to NavigationMenuLinkTreeManipulators::addOverviewLink()

NavigationMenuLinkTreeManipulators::addSecondLevelOverviewLinks in core/modules/navigation/src/Menu/NavigationMenuLinkTreeManipulators.php

Adds an "overview" child link to second level menu links with children.

File

core/modules/navigation/src/Menu/NavigationMenuLinkTreeManipulators.php, line 140

Class

NavigationMenuLinkTreeManipulators

Provides a menu link tree manipulator for the navigation menu block.

Namespace

Drupal\navigation\Menu

Code

protected function addOverviewLink(MenuLinkTreeElement $element) : void {
  // Copy the menu link for the menu link element to a new menu link
  // definition, except with overrides to make 'Overview' the title, set the
  // parent to the original menu link, and set weight to a low number so that
  // it likely goes to the top.
  $definition = [
    'title' => $this->t('Overview', [
      '@title' => $element->link
        ->getTitle(),
    ]),
    'parent' => $element->link
      ->getPluginId(),
    'provider' => 'navigation',
    'weight' => -1000,
  ] + $element->link
    ->getPluginDefinition();
  $link = new MenuLinkDefault([], $element->link
    ->getPluginId() . '.navigation_overview', $definition, $this->overrides);
  $overview_element = new MenuLinkTreeElement($link, FALSE, $element->depth + 1, $element->inActiveTrail, []);
  $overview_element->access = $element->access ? clone $element->access : NULL;
  $element->subtree[$element->link
    ->getPluginId() . '.navigation_overview'] = $overview_element;
}

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