/**
* {@inheritdoc}
*/
public function build()
{
$items = [];
$current_id = $this->active->getActiveLink('main')->getPluginId();
while (!empty($current_id)) {
$current_link = $this->linkManager->createInstance($current_id);
/** @var MenuLinkContent $current_link */
$link = new Link($current_link->getTitle(), $current_link->getUrlObject());
$items[] = $link;
$current_id = $current_link->getParent();
}
$breadcrumbs = new Breadcrumb();
$breadcrumbs->setLinks(array_reverse($items));
return $breadcrumbs->toRenderable();
}
/**
* Loads the contents of a menu block.
*
* This function is often a destination for these blocks.
* For example, 'admin/structure/types' needs to have a destination to be
* valid in the Drupal menu system, but too much information there might be
* hidden, so we supply the contents of the block.
*
* @return array
* A render array suitable for drupal_render.
*/
public function getBlockContents()
{
// We hard-code the menu name here since otherwise a link in the tools menu
// or elsewhere could give us a blank block.
$link = $this->menuActiveTrail->getActiveLink('admin');
if ($link && ($content = $this->getAdminBlock($link))) {
$output = array('#theme' => 'admin_block_content', '#content' => $content);
} else {
$output = array('#markup' => t('You do not have any administrative items.'));
}
return $output;
}