function settings_tray_preprocess_block in Drupal 8

Same name and namespace in other branches

1. 9 core/modules/settings_tray/settings_tray.module \settings_tray_preprocess_block()

Implements hook_preprocess_HOOK() for block templates.

File

core/modules/settings_tray/settings_tray.module, line 106

Allows configuring blocks and other configuration from the site front-end.

Code

function settings_tray_preprocess_block(&$variables) {

  // Only blocks that have a settings_tray form and have no configuration
  // overrides will have a "Quick Edit" link. We could wait for the contextual
  // links to be initialized on the client side,  and then add the class and
  // data- attribute below there (via JavaScript). But that would mean that it
  // would be impossible to show Settings Tray's clickable regions immediately
  // when the page loads. When latency is high, this will cause flicker.
  // @see \Drupal\settings_tray\Access\BlockPluginHasSettingsTrayFormAccessCheck

  /** @var \Drupal\settings_tray\Access\BlockPluginHasSettingsTrayFormAccessCheck $access_checker */
  $access_checker = \Drupal::service('access_check.settings_tray.block.settings_tray_form');

  /** @var \Drupal\Core\Block\BlockManagerInterface $block_plugin_manager */
  $block_plugin_manager = \Drupal::service('plugin.manager.block');

  /** @var \Drupal\Core\Block\BlockPluginInterface $block_plugin */
  $block_plugin = $block_plugin_manager
    ->createInstance($variables['plugin_id']);
  if (isset($variables['elements']['#contextual_links']['block']['route_parameters']['block'])) {
    $block = Block::load($variables['elements']['#contextual_links']['block']['route_parameters']['block']);
    if ($access_checker
      ->accessBlockPlugin($block_plugin)
      ->isAllowed() && !_settings_tray_has_block_overrides($block)) {

      // Add class and attributes to all blocks to allow Javascript to target.
      $variables['attributes']['class'][] = 'settings-tray-editable';
      $variables['attributes']['data-drupal-settingstray'] = 'editable';
    }
  }
}