function block_place_toolbar in Drupal 8

Implements hook_toolbar().

File

core/modules/block_place/block_place.module, line 36

Controls the placement of blocks from all pages.

Code

function block_place_toolbar() {

  // Link to the current page with a query parameter.
  $query = \Drupal::request()->query
    ->all();
  $wrapper_class = '';
  $status_class = '';
  $description = '';
  if (isset($query['block-place'])) {
    $status_class = 'active';
    $wrapper_class = 'is-active';
    $description = t('Exit Place block mode.');
    unset($query['block-place']);
    unset($query['destination']);
  }
  else {
    $status_class = 'inactive';
    $description = t('Show regions to Place blocks.');
    $query['block-place'] = '1';

    // Setting destination is both a work-around for the toolbar "Back to site"
    // link in escapeAdmin.js and used for the destination after picking a
    // block.
    $query['destination'] = Url::fromRoute('<current>')
      ->toString();
  }

  // Remove on Admin routes.
  $admin_route = \Drupal::service('router.admin_context')
    ->isAdminRoute();

  // Remove on Block Demo page.
  $admin_demo = \Drupal::routeMatch()
    ->getRouteName() === 'block.admin_demo';
  $access = \Drupal::currentUser()
    ->hasPermission('administer blocks') && !$admin_route && !$admin_demo;

  // The 'Place Block' tab is a simple link, with no corresponding tray.
  $items['block_place'] = [
    '#cache' => [
      'contexts' => [
        'user.permissions',
        'url.query_args',
      ],
    ],
    '#type' => 'toolbar_item',
    'tab' => [
      '#access' => $access,
      '#type' => 'link',
      '#title' => t('Place block'),
      '#url' => Url::fromRoute('<current>', [], [
        'query' => $query,
      ]),
      '#attributes' => [
        'title' => $description,
        'class' => [
          'toolbar-icon',
          'toolbar-icon-place-block-' . $status_class,
        ],
      ],
    ],
    '#wrapper_attributes' => [
      'class' => [
        'toolbar-tab',
        'block-place-toolbar-tab',
        $wrapper_class,
      ],
    ],
    '#weight' => 100,
    '#attached' => [
      'library' => [
        'block_place/drupal.block_place.icons',
      ],
    ],
  ];
  return $items;
}