public function StyleSensibleElementConstraintValidator::validate in Drupal 10

Throws

\Symfony\Component\Validator\Exception\UnexpectedTypeException Thrown when the given constraint is not supported by this validator.

File

core/modules/ckeditor5/src/Plugin/Validation/Constraint/StyleSensibleElementConstraintValidator.php, line 35

Class

StyleSensibleElementConstraintValidator

Styles can only be specified for HTML5 tags and extra classes.

Namespace

Drupal\ckeditor5\Plugin\Validation\Constraint

Code

public function validate($element, Constraint $constraint) {
  if (!$constraint instanceof StyleSensibleElementConstraint) {
    throw new UnexpectedTypeException($constraint, StyleSensibleElementConstraint::class);
  }

  // The preceding constraints (in this case: CKEditor5Element) must be valid.
  if ($this
    ->hasViolationsForPrecedingConstraints($constraint)) {
    return;
  }
  $text_editor = $this
    ->createTextEditorObjectFromContext();

  // The single tag for which a style is specified, which we are checking now.
  $style_element = HTMLRestrictions::fromString($element);
  assert(count($style_element
    ->getAllowedElements()) === 1);
  [
    $tag,
    $classes,
  ] = Style::getTagAndClasses($style_element);

  // Ensure the tag is in the range supported by the Style plugin.
  $superset = HTMLRestrictions::fromString('<$any-html5-element class>');
  $supported_range = $superset
    ->merge($style_element
    ->extractPlainTagsSubset());
  if (!$style_element
    ->diff($supported_range)
    ->allowsNothing()) {
    $this->context
      ->buildViolation($constraint->nonHtml5TagMessage)
      ->setParameter('@tag', sprintf("<%s>", $tag))
      ->addViolation();
    return;
  }

  // Get the list of tags enabled by every plugin other than Style.
  $other_enabled_plugins = $this
    ->getOtherEnabledPlugins($text_editor, 'ckeditor5_style');
  $enableable_disabled_plugins = $this
    ->getEnableableDisabledPlugins($text_editor);
  $other_enabled_plugin_elements = new HTMLRestrictions($this->pluginManager
    ->getProvidedElements(array_keys($other_enabled_plugins), $text_editor, FALSE));
  $disabled_plugin_elements = new HTMLRestrictions($this->pluginManager
    ->getProvidedElements(array_keys($enableable_disabled_plugins), $text_editor, FALSE));

  // Next, validate that the classes specified for this style are not
  // supported by an enabled plugin.
  if (self::intersectionWithClasses($style_element, $other_enabled_plugin_elements)) {
    $this->context
      ->buildViolation($constraint->conflictingEnabledPluginMessage)
      ->setParameter('@tag', sprintf("<%s>", $tag))
      ->setParameter('@classes', implode(", ", $classes))
      ->setParameter('%plugin', $this
      ->findStyleConflictingPluginLabel($style_element))
      ->addViolation();
  }
  elseif (self::intersectionWithClasses($style_element, $disabled_plugin_elements)) {
    $this->context
      ->buildViolation($constraint->conflictingDisabledPluginMessage)
      ->setParameter('@tag', sprintf("<%s>", $tag))
      ->setParameter('@classes', implode(", ", $classes))
      ->setParameter('%plugin', $this
      ->findStyleConflictingPluginLabel($style_element))
      ->addViolation();
  }
}