public function RenderBuilder::build in Admin Toolbar Language Switcher 2.0.x

Same name and namespace in other branches

1. 8 src/RenderBuilder.php \Drupal\toolbar_language_switcher\RenderBuilder::build()
2. 8.1.x src/RenderBuilder.php \Drupal\toolbar_language_switcher\RenderBuilder::build()

Main build method.

Return value

array Render array for the toolbar items.

File

src/RenderBuilder.php, line 76

Class

RenderBuilder

Class RenderBuilder.

Namespace

Drupal\toolbar_language_switcher

Code

public function build() {
  $urls = $this->languageManager
    ->getLanguageSwitchLinks(LanguageInterface::TYPE_INTERFACE, new Url($this->route));
  $urls = $urls->links ?? [];
  $urls_count = count($urls);
  if ($urls_count < 2) {
    return [];
  }

  // Set cache.
  $items['admin_toolbar_langswitch'] = [
    '#cache' => [
      'contexts' => [
        'languages:language_interface',
        'url',
      ],
    ],
  ];

  // Build toolbar item and tray.
  $items['admin_toolbar_langswitch'] += [
    '#type' => 'toolbar_item',
    '#weight' => 999,
    'tab' => [
      '#type' => 'html_tag',
      '#tag' => 'a',
      '#attributes' => [
        'class' => [
          'toolbar-icon',
          'toolbar-icon-language',
        ],
      ],
      '#attached' => [
        'library' => [
          'toolbar_language_switcher/toolbar',
        ],
      ],
    ],
  ];
  $current_language_name = $this->currentLanguage
    ->getName();
  $current_language_id = $this->currentLanguage
    ->getId();
  if ($urls_count > 2) {

    // Get links.
    $links = [];
    foreach ($urls as $url_info) {
      $link = [
        'attributes' => [],
      ];
      $link_title = $url_info['title'];
      $url_options = [
        'query' => $url_info['query'],
      ];
      if (!empty($url_info['language'])) {
        $url_options['language'] = $url_info['language'];
        if ($url_info['language']
          ->getId() === $current_language_id) {
          $link['attributes']['class'][] = 'is-active';
          $link['attributes']['title'] = $this
            ->t('Current active @current language', [
            '@current' => $link_title,
          ]);
          $url_options['fragment'] = '!';
        }
      }
      else {
        $link['attributes']['title'] = $this
          ->t('Change @current language to @another', [
          '@current' => $current_language_name,
          '@another' => $link_title,
        ]);
      }
      $link['attributes'] = NestedArray::mergeDeep($link['attributes'], $url_info['attributes']);
      $link['title'] = $link_title;

      /** @var \Drupal\Core\Url $url */
      $url = $url_info['url'];
      $link['url'] = $url
        ->setOptions($url_options);
      $links[] = $link;
    }

    // Build toolbar item and tray.
    $items['admin_toolbar_langswitch'] = NestedArray::mergeDeep($items['admin_toolbar_langswitch'], [
      'tab' => [
        '#value' => $current_language_name,
        '#attributes' => [
          'href' => '#',
          'title' => $this
            ->t('Selected language: @lang', [
            '@lang' => $current_language_name,
          ]),
        ],
      ],
      'tray' => [
        '#heading' => $this
          ->t('Admin Toolbar Language Switcher'),
        'content' => [
          '#theme' => 'links',
          '#links' => $links,
          '#attributes' => [
            'class' => [
              'toolbar-menu',
            ],
          ],
        ],
      ],
    ]);
  }
  else {
    unset($urls[$current_language_id]);
    $another_language_link_info = reset($urls);
    $another_language_langcode = key($urls);
    $another_language_name = $another_language_link_info['title'];

    /** @var \Drupal\Core\Url $another_language_url */
    $another_language_url = $another_language_link_info['url'];
    if (isset($another_language_link_info['language'])) {
      $another_language = $another_language_link_info['language'];
      $another_language_url
        ->setOption('language', $another_language);
    }
    $another_language_url
      ->setOption('query', $another_language_link_info['query']);

    // Build toolbar item.
    $items['admin_toolbar_langswitch'] = NestedArray::mergeDeep($items['admin_toolbar_langswitch'], [
      'tab' => [
        '#value' => $this
          ->t('Switch to @another', [
          '@another' => $another_language_name,
        ], [
          'langcode' => $another_language_langcode,
        ]),
        '#attributes' => NestedArray::mergeDeep($another_language_link_info['attributes'], [
          'href' => $another_language_url
            ->toString(),
          'title' => $this
            ->t('Switch @current language to @another', [
            '@current' => $current_language_name,
            '@another' => $another_language_name,
          ], [
            'langcode' => $another_language_langcode,
          ]),
        ]),
      ],
    ]);
  }
  return $items;
}