/**
* {@inheritdoc}
*/
public function preprocessVariables(Variables $variables)
{
// Ensure a unique ID, generating one if needed.
$id = $variables->getAttribute('id', Html::getUniqueId($variables->offsetGet('id', 'progress-bar')));
$variables->setAttribute('id', $id);
unset($variables['id']);
// Preprocess attributes.
$this->preprocessAttributes();
}
/**
* {@inheritdoc}
*/
protected function preprocessVariables(Variables $variables, $hook, array $info)
{
// Immediately log an error and return if Bootstrap modals are not enabled.
if (!$this->theme->getSetting('modal_enabled')) {
\Drupal::logger('bootstrap')->error(t('Bootstrap modals are not enabled.'));
return;
}
// Retrieve the ID, generating one if needed.
$id = $variables->getAttribute('id', Html::getUniqueId($variables->offsetGet('id', 'bootstrap-modal')));
$variables->setAttribute('id', $id);
unset($variables['id']);
if ($variables->title) {
$title_id = $variables->getAttribute('id', "{$id}--title", $variables::TITLE);
$variables->setAttribute('id', $title_id, $variables::TITLE);
$variables->setAttribute('aria-labelledby', $title_id);
}
// Use a provided modal size or retrieve the default theme setting.
$variables->size = $variables->size ?: $this->theme->getSetting('modal_size');
// Convert the description variable.
$this->preprocessDescription($variables, $hook, $info);
// Ensure all attributes are proper objects.
$this->preprocessAttributes($variables, $hook, $info);
}
/**
* Converts any set description variable into a traversable array.
*
* @param \Drupal\bootstrap\Utility\Variables $variables
* A variables object.
* @param string $hook
* The name of the theme hook.
* @param array $info
* The theme hook info array.
*
* @see https://www.drupal.org/node/2324025
*/
protected function preprocessDescription(Variables $variables, $hook, array $info)
{
if ($variables->offsetGet('description')) {
// Retrieve the description attributes.
$description_attributes = $variables->offsetGet('description_attributes', []);
// Remove standalone description attributes.
$variables->offsetUnset('description_attributes');
// Build the description attributes.
if ($id = $variables->getAttribute('id')) {
$variables->setAttribute('aria-describedby', "{$id}--description");
$description_attributes['id'] = "{$id}--description";
}
// Replace the description variable.
$variables->offsetSet('description', ['attributes' => new Attribute($description_attributes), 'content' => $variables['description'], 'position' => $variables->offsetGet('description_display', 'after')]);
}
}
