protected function BootstrapPanel::preprocessVariables in Express 8

Preprocess the variables array.

Parameters

\Drupal\bootstrap\Utility\Variables $variables: The Variables object.

Overrides PreprocessBase::preprocessVariables

File

themes/contrib/bootstrap/src/Plugin/Preprocess/BootstrapPanel.php, line 97

Contains \Drupal\bootstrap\Plugin\Preprocess\BootstrapPanel.

Class

BootstrapPanel

Pre-processes variables for the "bootstrap_panel" theme hook.

Namespace

Drupal\bootstrap\Plugin\Preprocess

Code

protected function preprocessVariables(Variables $variables) {

  // Retrieve the ID, generating one if needed.
  $id = $variables
    ->getAttribute('id', Html::getUniqueId($variables
    ->offsetGet('id', 'bootstrap-panel')));
  unset($variables['id']);

  // Handle collapsible state.
  if ($variables['heading'] && $variables['collapsible']) {

    // Retrieve the body ID attribute.
    if ($body_id = $variables
      ->getAttribute('id', "{$id}--content", 'body_attributes')) {

      // Ensure the target is set.
      if ($variables['target'] = $variables
        ->offsetGet('target', "#{$body_id}")) {

        // Set additional necessary attributes to the heading.
        $variables
          ->setAttributes([
          'aria-controls' => preg_replace('/^#/', '', $variables['target']),
          'aria-expanded' => !$variables['collapsed'] ? 'true' : 'false',
          'aria-pressed' => !$variables['collapsed'] ? 'true' : 'false',
          'data-toggle' => 'collapse',
          'role' => 'button',
        ], 'heading_attributes');
      }
    }
  }

  // Ensure we render HTML from heading.
  $heading = $variables
    ->offsetGet('heading');
  if ($heading && (is_string($heading) || $heading instanceof MarkupInterface)) {
    $variables
      ->offsetSet('heading', [
      '#markup' => $heading,
    ]);
  }

  // Ensure there is a valid panel state.
  if (!$variables
    ->offsetGet('panel_type')) {
    $variables
      ->offsetSet('panel_type', 'default');
  }

  // Convert the description variable.
  $this
    ->preprocessDescription();

  // Ensure all attributes are proper objects.
  $this
    ->preprocessAttributes();
}