/**
* Validate callback to inform the user of CKEditor 5 compatibility problems.
*/
public static function validateSwitchingToCKEditor5(array
$form, FormStateInterface
$form_state): void
{ if (!
$form_state->
get('ckeditor5_is_active'
) &&
$form_state->
get('ckeditor5_is_selected'
)) { $minimal_ckeditor5_editor = Editor::
create([ 'format' => NULL,
'editor' => 'ckeditor5',
]);
$submitted_filter_format = CKEditor5::
getSubmittedFilterFormat($form_state);
$fundamental_incompatibilities = CKEditor5::
validatePair($minimal_ckeditor5_editor,
$submitted_filter_format, FALSE
);
foreach ($fundamental_incompatibilities as $violation) { // If the violation uses the nonAllowedElementsMessage template, it can
// be skipped because this is a violation that automatically fixed
// within SmartDefaultSettings, but SmartDefaultSettings does not
// execute until this validator passes.
if ($violation->
getMessageTemplate() ===
$violation->
getConstraint()->nonAllowedElementsMessage
) { continue;
} // @codingStandardsIgnoreLine