public function QuickTabs::render in Quick Tabs 8.3

Returns a render array to be used in a block or page.

Return value

array A render array.

Overrides TabRendererBase::render

File

src/Plugin/TabRenderer/QuickTabs.php, line 71

Class

QuickTabs

Provides a 'QuickTabs' tab renderer.

Namespace

Drupal\quicktabs\Plugin\TabRenderer

Code

public function render(QuickTabsInstance $instance) {
  $qt_id = $instance
    ->id();
  $type = \Drupal::service('plugin.manager.tab_type');

  // The render array used to build the block.
  $build = [];
  $build['pages'] = [];
  $build['pages']['#theme_wrappers'] = [
    'container' => [
      '#attributes' => [
        'class' => [
          'quicktabs-main',
        ],
        'id' => 'quicktabs-container-' . $qt_id,
      ],
    ],
  ];

  // Pages of content that will be shown or hidden.
  $tab_pages = [];

  // Tabs used to show/hide content.
  $titles = [];
  $is_ajax = $instance
    ->getOptions()['quick_tabs']['ajax'];
  $style = $instance
    ->getOptions()['quick_tabs']['style'] ?? '';
  $custom_class = $instance
    ->getOptions()['quick_tabs']['class'] ?? '';
  foreach ($instance
    ->getConfigurationData() as $index => $tab) {

    // Build the pages //////////////////////////////////////.
    $default_tab = $instance
      ->getDefaultTab() == 9999 ? 0 : $instance
      ->getDefaultTab();
    if ($is_ajax) {
      if ($default_tab == $index) {
        $object = $type
          ->createInstance($tab['type']);
        $render = $object
          ->render($tab);
      }
      else {
        $render = [
          '#markup' => $this
            ->t('Loading content ...'),
        ];
      }
    }
    else {
      $object = $type
        ->createInstance($tab['type']);
      $render = $object
        ->render($tab);
    }

    // If user wants to hide empty tabs and there is no content
    // then skip to next tab.
    if ($instance
      ->getHideEmptyTabs() && empty($render)) {
      continue;
    }
    $classes = [
      'quicktabs-tabpage',
    ];
    if ($default_tab != $index) {
      $classes[] = 'quicktabs-hide';
    }
    $render['#prefix'] = '<div>';
    $render['#suffix'] = '</div>';
    $block_id = 'quicktabs-tabpage-' . $qt_id . '-' . $index;
    $tab_id = 'quicktabs-tab-' . $qt_id . '-' . $index;
    if (!empty($tab['content'][$tab['type']]['options']['display_title']) && !empty($tab['content'][$tab['type']]['options']['block_title'])) {
      $build['pages'][$index]['#title'] = $tab['content'][$tab['type']]['options']['block_title'];
    }
    $build['pages'][$index]['#block'] = $render;
    $build['pages'][$index]['#classes'] = implode(' ', $classes);
    $build['pages'][$index]['#id'] = $block_id;
    $build['pages'][$index]['#tabid'] = $tab_id;
    $build['pages'][$index]['#theme'] = 'quicktabs_block_content';

    // Build the tabs ///////////////////////////////.
    $wrapper_attributes = [
      'role' => 'tab',
      'aria-controls' => $block_id,
      'aria-selected' => 'false',
      'id' => $tab_id,
      'tabIndex' => '-1',
    ];
    if ($default_tab == $index) {
      $wrapper_attributes['class'] = [
        'active',
      ];
      $wrapper_attributes['aria-selected'] = 'true';
      $wrapper_attributes['tabindex'] = '0';
    }
    if ($custom_class) {
      $wrapper_attributes['class'][] = $custom_class;
    }
    $title_class = strip_tags($tab['title']);
    $wrapper_attributes['class'][] = strtolower(Html::cleanCssIdentifier($title_class));
    $link_classes = [];
    if ($is_ajax) {
      $link_classes[] = 'use-ajax';
      if ($default_tab == $index) {
        $link_classes[] = 'quicktabs-loaded';
      }
    }
    else {
      $link_classes[] = 'quicktabs-loaded';
    }
    $titles[] = [
      '0' => Link::fromTextAndUrl(new TranslatableMarkup($tab['title']), Url::fromRoute('quicktabs.ajax_content', [
        'js' => 'nojs',
        'instance' => $qt_id,
        'tab' => $index,
      ], [
        'attributes' => [
          'class' => $link_classes,
          'data-quicktabs-tab-index' => $index,
        ],
      ]))
        ->toRenderable(),
      '#wrapper_attributes' => $wrapper_attributes,
    ];

    // Array of tab pages to pass as settings ////////////.
    $tab['tab_page'] = $index;
    $tab_pages[] = $tab;
  }
  $tabs = [
    '#theme' => 'item_list__quicktabs__' . $qt_id,
    '#items' => $titles,
    '#attributes' => [
      'class' => [
        'quicktabs-tabs',
      ],
      'role' => 'tablist',
    ],
  ];

  // Add tabs to the build.
  array_unshift($build, $tabs);

  // Attach libraries.
  $libraries = [
    'quicktabs/quicktabs',
  ];
  if ($style) {
    $libraries[] = 'quicktabs/' . $style;
  }
  $build['#attached'] = [
    'library' => $libraries,
    'drupalSettings' => [
      'quicktabs' => [
        'qt_' . $qt_id => [
          'tabs' => $tab_pages,
        ],
      ],
    ],
  ];

  // Add a wrapper.
  $classes = [
    'quicktabs-wrapper',
  ];
  if ($style) {
    $classes[] = $style;
  }
  $build['#theme_wrappers'] = [
    'container' => [
      '#attributes' => [
        'class' => $classes,
        'id' => 'quicktabs-' . $qt_id,
      ],
    ],
  ];
  return $build;
}