private function BlazyFilter::validNodes in Blazy 8.2

Return valid nodes based on the allowed tags.

1 call to BlazyFilter::validNodes()

BlazyFilter::process in src/Plugin/Filter/BlazyFilter.php

Performs the filter processing.

File

src/Plugin/Filter/BlazyFilter.php, line 622

Class

BlazyFilter

Provides a filter to lazyload image, or iframe elements.

Namespace

Drupal\blazy\Plugin\Filter

Code

private function validNodes(\DOMDocument $dom, array $allowed_tags = []) {
  $valid_nodes = [];
  foreach ($allowed_tags as $allowed_tag) {
    $nodes = $dom
      ->getElementsByTagName($allowed_tag);
    if ($nodes->length > 0) {
      foreach ($nodes as $node) {
        if ($node
          ->hasAttribute('data-unblazy')) {
          continue;
        }
        $valid_nodes[] = $node;
      }
    }
  }
  return $valid_nodes;
}