Toolbar::preRenderToolbar

public static Toolbar::preRenderToolbar($element)

public static function preRenderToolbar($element) {
  // Get the configured breakpoints to switch from vertical to horizontal
  // toolbar presentation.
  $breakpoints = static::breakpointManager()->getBreakpointsByGroup('toolbar');
  if (!empty($breakpoints)) {
    $media_queries = array();
    foreach ($breakpoints as $id => $breakpoint) {
      $media_queries[$id] = $breakpoint->getMediaQuery();
    }

    $element['#attached']['drupalSettings']['toolbar']['breakpoints'] = $media_queries;
  }

  $module_handler = static::moduleHandler();
  // Get toolbar items from all modules that implement hook_toolbar().
  $items = $module_handler->invokeAll('toolbar');
  // Allow for altering of hook_toolbar().
  $module_handler->alter('toolbar', $items);
  // Sort the children.
  uasort($items, array('\Drupal\Component\Utility\SortArray', 'sortByWeightProperty'));

  // Merge in the original toolbar values.
  $element = array_merge($element, $items);

  // Assign each item a unique ID, based on its key.
  foreach (Element::children($element) as $key) {
    $element[$key]['#id'] = Html::getId('toolbar-item-' . $key);
  }

  return $element;
}