public function FilterResponsiveWrappers::process in Responsive wrappers 8

Same name and namespace in other branches

1. 2.0.x src/Plugin/Filter/FilterResponsiveWrappers.php \Drupal\responsivewrappers\Plugin\Filter\FilterResponsiveWrappers::process()

Implements filter processor.

Overrides FilterInterface::process

File

src/Plugin/Filter/FilterResponsiveWrappers.php, line 25

Class

FilterResponsiveWrappers

Check the content and add responsive classes and wrappers.

Namespace

Drupal\responsivewrappers\Plugin\Filter

Code

public function process($text, $langcode) {
  $result = new FilterProcessResult($text);
  if ($this->settings['responsive_iframe'] || $this->settings['responsive_table'] || $this->settings['responsive_image']) {

    // Module base config.
    $config = \Drupal::config('responsivewrappers.settings');
    $dom = Html::load($text);

    // Responsive video wrapper.
    if ($this->settings['responsive_iframe']) {
      $iframes = $dom
        ->getElementsByTagName('iframe');
      $video_pattern = $this->settings['responsive_iframe_pattern'];
      foreach ($iframes as $iframe) {

        // Video detection pattern.
        $iframe_src = $iframe
          ->getAttribute('src');
        if (preg_match($video_pattern, $iframe_src)) {

          // Video wrapper.
          $video_wrapper_class = $iframe->parentNode->tagName === 'div' ? $iframe->parentNode
            ->getAttribute('class') : '';

          // If exists, replace video-embed-field functionality.
          if (strpos($video_wrapper_class, 'video-embed-field-responsive-video') !== FALSE) {
            $video_wrapper_class = str_replace('video-embed-field-responsive-video', 'embed-responsive embed-responsive-16by9', $video_wrapper_class);
            $iframe->parentNode
              ->setAttribute('class', $video_wrapper_class);
          }
          elseif (strpos($video_wrapper_class, 'embed-responsive') === FALSE) {

            // If not exists create the wrapper.
            $video_wrapper = $dom
              ->createElement('div');
            $video_wrapper
              ->setAttribute('class', 'embed-responsive embed-responsive-16by9');
            $iframe = $iframe->parentNode
              ->replaceChild($video_wrapper, $iframe);
            $video_wrapper
              ->appendChild($iframe);
          }

          // Video class.
          $video_class = $iframe
            ->getAttribute('class');
          if (empty($video_class) || !in_array('embed-responsive-item', explode(' ', $video_class))) {
            $iframe
              ->setAttribute('class', trim($video_class . ' embed-responsive-item'));
          }
        }
      }
    }

    // Responsive table wrapper and class.
    if ($this->settings['responsive_table']) {
      $tables = $dom
        ->getElementsByTagName('table');
      foreach ($tables as $table) {

        // Table wrapper.
        $table_wrapper_class = $table->parentNode->tagName === 'div' ? $table->parentNode
          ->getAttribute('class') : '';
        if (strpos($table_wrapper_class, 'table-responsive') === FALSE) {
          $table_wrapper = $dom
            ->createElement('div');
          $table_wrapper
            ->setAttribute('class', 'table-responsive');
          $table = $table->parentNode
            ->replaceChild($table_wrapper, $table);
          $table_wrapper
            ->appendChild($table);
        }

        // Table class.
        $table_class = $table
          ->getAttribute('class');
        if (empty($table_class) || !in_array('table', explode(' ', $table_class))) {
          $table
            ->setAttribute('class', trim($table_class . ' table'));
        }
      }
    }

    // Responsive image class.
    if ($this->settings['responsive_image']) {
      $images = $dom
        ->getElementsByTagName('img');
      foreach ($images as $image) {

        // Image class.
        $image_class = $image
          ->getAttribute('class');
        $responsive_class = 4 === $config
          ->get('version') ? 'img-fluid' : 'img-responsive';
        if (strpos($image_class, $responsive_class) === FALSE) {
          $image
            ->setAttribute('class', trim($image_class . ' ' . $responsive_class));
        }
      }
    }
    $result
      ->setProcessedText(Html::serialize($dom));

    // Attach responsive CSS if needed.
    if ($config
      ->get('add_css')) {
      if (4 === $config
        ->get('version')) {
        $result
          ->setAttachments([
          'library' => [
            'responsivewrappers/responsivewrappers_v4',
          ],
        ]);
      }
      else {
        $result
          ->setAttachments([
          'library' => [
            'responsivewrappers/responsivewrappers_v3',
          ],
        ]);
      }
    }
  }
  return $result;
}