public function DropdownLanguage::build in Dropdown Language 8

Same name and namespace in other branches

1. 8.3 src/Plugin/Block/DropdownLanguage.php \Drupal\dropdown_language\Plugin\Block\DropdownLanguage::build()
2. 8.2 src/Plugin/Block/DropdownLanguage.php \Drupal\dropdown_language\Plugin\Block\DropdownLanguage::build()
3. 3.0.x src/Plugin/Block/DropdownLanguage.php \Drupal\dropdown_language\Plugin\Block\DropdownLanguage::build()

Builds and returns the renderable array for this block plugin.

If a block should not be rendered because it has no content, then this method must also ensure to return no content: it must then only return an empty array, or an empty array with #cache set (with cacheability metadata indicating the circumstances for it being empty).

Return value

array A renderable array representing the content of the block.

Overrides BlockPluginInterface::build

See also

\Drupal\block\BlockViewBuilder

File

src/Plugin/Block/DropdownLanguage.php, line 85

Class

DropdownLanguage

Provides an alternative language switcher block.

Namespace

Drupal\dropdown_language\Plugin\Block

Code

public function build() {
  $block = [];
  $languages = $this->languageManager
    ->getLanguages();
  if (count($languages) > 1) {
    $current_language = $this->languageManager
      ->getCurrentLanguage()
      ->getId();
    $links = $this->languageManager
      ->getLanguageSwitchLinks("language_interface", Url::fromRoute('<current>'))->links;

    // Place active language ontop of list.
    if (isset($links[$current_language])) {
      $links = [
        $current_language => $links[$current_language],
      ] + $links;

      // Set an active class for styling.
      $links[$current_language]['attributes']['class'][] = 'active-language';
    }

    // Get block instance and general settings.
    $block_config = $this
      ->getConfiguration();
    $general_config = $this->configFactory
      ->get('dropdown_language.setting');
    $wrapper_default = $general_config
      ->get('wrapper');
    $display_language_id = $general_config
      ->get('display_language_id');

    // Re-label as per general setting.
    foreach ($links as $lid => $link) {
      switch ($display_language_id) {
        case '0':
          $links[$lid]['title'] = Unicode::strtoupper($lid);
          break;
        case '2':
          $links[$lid]['title'] = isset($block_config['labels'][$lid]) ? $block_config['labels'][$lid] : $link['language']
            ->getName();
          break;
      }
    }
    $dropdown_button = [
      '#type' => 'dropbutton',
      '#subtype' => 'dropdown_language',
      '#links' => $links,
      '#attributes' => [
        'class' => [
          'dropdown-language-item',
        ],
      ],
      '#attached' => [
        'library' => [
          'dropdown_language/dropdown-language-selector',
        ],
      ],
    ];
    if ($wrapper_default == 1) {
      $block['switcher'] = [
        '#type' => 'fieldset',
        '#title' => $this
          ->t('Switch Language'),
      ];
      $block['switcher']['switch-language'] = $dropdown_button;
    }
    else {
      $block['switch-language'] = $dropdown_button;
    }
  }
  return $block;
}