template_preprocess_language_negotiation_configure_form

template_preprocess_language_negotiation_configure_form(&$variables)

function template_preprocess_language_negotiation_configure_form(&$variables) {
  $form = &$variables['form'];
  $variables['language_types'] = array();

  foreach ($form['#language_types'] as $type) {
    $header = array(
      t('Detection method'),
      t('Description'),
      t('Enabled'),
      t('Weight'),
    );

    // If there is at least one operation enabled show the operation column.
    if ($form[$type]['#show_operations']) {
      $header[] = t('Operations');
    }

    $table = array(
      '#type' => 'table',
      '#header' => $header,
      '#attributes' => array('id' => 'language-negotiation-methods-' . $type),
      '#tabledrag' => array(
        array(
          'action' => 'order',
          'relationship' => 'sibling',
          'group' => 'language-method-weight-' . $type,
        ),
      ),
    );

    foreach ($form[$type]['title'] as $id => $element) {
      // Do not take form control structures.
      if (is_array($element) && Element::child($id)) {
        $table[$id]['#attributes']['class'][] = 'draggable';
        $table[$id]['#weight'] = $element['#weight'];

        $table[$id]['title'] = array(
          '#prefix' => '<strong>',
          $form[$type]['title'][$id],
          '#suffix' => '</strong>',
        );
        $table[$id]['description'] = $form[$type]['description'][$id];
        $table[$id]['enabled'] = $form[$type]['enabled'][$id];
        $table[$id]['weight'] = $form[$type]['weight'][$id];
        if ($form[$type]['#show_operations']) {
          $table[$id]['operation'] = $form[$type]['operation'][$id];
        }
        // Unset to prevent rendering along with children.
        unset($form[$type]['title'][$id]);
        unset($form[$type]['description'][$id]);
        unset($form[$type]['enabled'][$id]);
        unset($form[$type]['weight'][$id]);
        unset($form[$type]['operation'][$id]);
      }
    }

    // Unset configurable to prevent rendering twice with children.
    $configurable = isset($form[$type]['configurable']) ? $form[$type]['configurable'] : NULL;
    unset($form[$type]['configurable']);

    $variables['language_types'][] = array(
      'type' => $type,
      'title' => $form[$type]['#title'],
      'description' => $form[$type]['#description'],
      'configurable' => $configurable,
      'table' => $table,
      'children' => $form[$type],
      'attributes' => new Attribute(),
    );
    // Prevent the type from rendering with the remaining form child elements.
    unset($form[$type]);
  }

  $variables['children'] = $form;
}