/**
  * Overrides \Drupal\Core\Form\ConfirmFormBase::buildForm().
  */
 public function buildForm(array $form, array &$form_state, $pid = NULL)
 {
     $this->pathAlias = $this->aliasStorage->load(array('pid' => $pid));
     $form = parent::buildForm($form, $form_state);
     // @todo Convert to getCancelRoute() after http://drupal.org/node/1987802.
     $form['actions']['cancel']['#href'] = 'admin/config/search/path';
     return $form;
 }

 /**
  * {@inheritdoc}
  */
 public function buildForm(array $form, FormStateInterface $form_state, NodeInterface $node = NULL, $fid = NULL, $pfid = NULL)
 {
     $this->node = $node;
     $this->featureId = $fid;
     $this->feature = uc_product_feature_load($pfid);
     return parent::buildForm($form, $form_state);
 }

 /**
  * {@inheritdoc}
  */
 public function buildForm(array $form, FormStateInterface $form_state, PageInterface $page = NULL, $display_variant_id = NULL, $block_id = NULL)
 {
     $this->page = $page;
     $this->displayVariant = $this->page->getVariant($display_variant_id);
     $this->block = $this->displayVariant->getBlock($block_id);
     return parent::buildForm($form, $form_state);
 }

 /**
  * {@inheritdoc}
  */
 public function buildForm(array $form, FormStateInterface $form_state, PageInterface $page = NULL, $display_variant_id = NULL, $condition_id = NULL)
 {
     $this->page = $page;
     $this->displayVariant = $this->page->getVariant($display_variant_id);
     $this->selectionCondition = $this->displayVariant->getSelectionCondition($condition_id);
     return parent::buildForm($form, $form_state);
 }

 /**
  * {@inheritdoc}
  */
 public function buildForm(array $form, FormStateInterface $form_state)
 {
     $results = $_POST;
     $form['method'] = array('#type' => 'hidden', '#value' => $results['method']);
     if (!isset($results['reset'])) {
         $results['reset'] = 0;
     }
     $form['all'] = array('#type' => 'hidden', '#value' => $results['all']);
     if (isset($results['all'])) {
         // Only carry reset value through if delete all nodes is set
         $form['reset'] = array('#type' => 'hidden', '#value' => $results['reset']);
         $form['all_warning'] = array('#markup' => '<p>' . $this->t('All content in all content types will be deleted. Be sure to have a backup of any important data!') . '</p>');
         if (!empty($results['reset'])) {
             if ($results['all']) {
                 $form['all_reset'] = array('#markup' => '<p>' . $this->t('Node, revision and comment counts will be reset.') . '</p>');
             }
         }
     } elseif (isset($results['types'])) {
         if (is_array($results['types'])) {
             foreach ($results['types'] as $key_type => $type) {
                 /**
                  * @TODO, if we use the form array the value doesn't exist in the submit
                  */
                 $_SESSION['nodes_type'][$key_type] = $type;
                 $info = node_type_get_types('type', $type);
                 $info = $info[$type];
                 $form[$type . '_warning'] = array('#markup' => '<p>' . $this->t('All content in the %type content type will be deleted. Be sure to have a backup of any important data!', array('%type' => $info->get('name'))) . '</p>');
             }
         }
         if ($results['reset']) {
             $form['all_reset'] = array('#markup' => '<p>' . $this->t('Sorry, we can\'t reset the counters because you are not deleting all nodes.') . '</p>');
         }
     }
     return parent::buildForm($form, $form_state);
 }

 /**
  * {@inheritdoc}
  */
 public function buildForm(array $form, FormStateInterface $form_state, NodeInterface $node = NULL, $component = NULL)
 {
     $this->node = $node;
     // @todo $component should be a fully loaded object, need to make our own ParamConverterInterface.
     $this->component = isset($node->webform['components'][$component]) ? $node->webform['components'][$component] : FALSE;
     return parent::buildForm($form, $form_state);
 }

 /**
  * {@inheritdoc}
  */
 public function buildForm(array $form, FormStateInterface $form_state, $tempstore_id = NULL, $machine_name = NULL, $context_id = NULL)
 {
     $this->tempstore_id = $tempstore_id;
     $this->machine_name = $machine_name;
     $this->context_id = $context_id;
     return parent::buildForm($form, $form_state);
 }

 /**
  * {@inheritdoc}
  */
 public function buildForm(array $form, FormStateInterface $form_state, $actions = NULL)
 {
     $cart_links_config = $this->config('uc_cart_links.settings');
     $this->actions = $actions;
     // Fail if the link is restricted.
     $data = $cart_links_config->get('restrictions');
     if (!empty($data)) {
         $restrictions = explode("\n", $cart_links_config->get('restrictions'));
         $restrictions = array_map('trim', $restrictions);
         if (!empty($restrictions) && !in_array($this->actions, $restrictions)) {
             unset($_GET['destination']);
             $path = $cart_links_config->get('invalid_page');
             if (empty($path)) {
                 return $this->redirect('<front>', [], ['absolute' => TRUE]);
             }
             return new RedirectResponse(Url::fromUri('internal:/' . $path, ['absolute' => TRUE])->toString());
         }
     }
     // Confirm with the user if the form contains a destructive action.
     $cart = Cart::create(\Drupal::getContainer());
     $items = $cart->getContents();
     if ($cart_links_config->get('empty') && !empty($items)) {
         $actions = explode('-', urldecode($this->actions));
         foreach ($actions as $action) {
             $action = Unicode::substr($action, 0, 1);
             if ($action == 'e' || $action == 'E') {
                 $form = parent::buildForm($form, $form_state);
                 $form['actions']['cancel']['#href'] = $cart_links_config->get('invalid_page');
                 return $form;
             }
         }
     }
     // No destructive actions, so process the link immediately.
     return $this->submitForm($form, $form_state);
 }

 /**
  * {@inheritdoc}
  *
  * @param string $ban_id
  *   The IP address record ID to unban.
  */
 public function buildForm(array $form, FormStateInterface $form_state, $ban_id = '')
 {
     if (!($this->banIp = $this->ipManager->findById($ban_id))) {
         throw new NotFoundHttpException();
     }
     return parent::buildForm($form, $form_state);
 }

 /**
  * {@inheritdoc}
  */
 public function buildForm(array $form, array &$form_state, $browser_langcode = NULL)
 {
     $this->browserLangcode = $browser_langcode;
     $form = parent::buildForm($form, $form_state);
     // @todo Convert to getCancelRoute() after http://drupal.org/node/2082071.
     $form['actions']['cancel']['#href'] = 'admin/config/regional/language/detection/browser';
     return $form;
 }

 /**
  * Builds the form array.
  *
  * Note that when adding arguments to buildForm(), you need to give
  * them default values, to avoid PHP errors.
  */
 public function buildForm(array $form, FormStateInterface $form_state, $id = '')
 {
     // Sanitize and save the ID.
     $id = (int) $id;
     $this->to_delete_id = $id;
     $form = parent::buildForm($form, $form_state);
     return $form;
 }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state,
                            FlagInterface $flag = NULL, $entity_id = NULL) {

    $this->flag = $flag;
    $flag_service = \Drupal::service('flag');
    $this->entity = $flag_service->getFlaggableById($this->flag, $entity_id);
    return parent::buildForm($form, $form_state);
  }

 /**
  * {@inheritdoc}
  *
  * @param int $id
  *   (optional) The ID of the item to be deleted.
  */
 public function buildForm(array $form, FormStateInterface $form_state, $file = '') {
   // @todo update access!
   $this->id = $file;
   if (!$this->id) {
     throw new NotFoundHttpException();
   }
   // @todo set album type?
   return parent::buildForm($form, $form_state);
 }

 /**
  * {@inheritdoc}
  */
 public function buildForm(array $form, FormStateInterface $form_state, OrderInterface $uc_order = NULL, $payment = NULL)
 {
     $this->payment = uc_payment_load($payment);
     // Make sure the payment is for the specified order.
     if ($this->payment->order_id != $uc_order->id()) {
         throw new NotFoundHttpException();
     }
     return parent::buildForm($form, $form_state);
 }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state, ProfileInterface $linkit_profile = NULL, $plugin_instance_id = NULL) {
    $this->linkitProfile = $linkit_profile;

    if (!$this->linkitProfile->getAttributes()->has($plugin_instance_id)) {
      throw new NotFoundHttpException();
    }

    $this->linkitAttribute = $this->linkitProfile->getAttribute($plugin_instance_id);
    return parent::buildForm($form, $form_state);
  }

 /**
  * @param array $form
  * @param \Drupal\Core\Form\FormStateInterface $form_state
  * @param null $backup_migrate_destination
  * @param null $backup_id
  * @return array
  */
 public function buildForm(array $form, FormStateInterface $form_state, $backup_migrate_destination = NULL, $backup_id = NULL)
 {
     $this->destination = $backup_migrate_destination;
     $this->backup_id = $backup_id;
     $bam = backup_migrate_get_service_object();
     $form['source_id'] = DrupalConfigHelper::getPluginSelector($bam->sources(), $this->t('Restore To'));
     $conf_schema = $bam->plugins()->map('configSchema', array('operation' => 'restore'));
     $form += DrupalConfigHelper::buildFormFromSchema($conf_schema, $bam->plugins()->config());
     return parent::buildForm($form, $form_state);
 }

 /**
  * {@inheritdoc}
  */
 public function buildForm(array $form, FormStateInterface $form_state)
 {
     $form = parent::buildForm($form, $form_state);
     // Remove the cancel button if this is an AJAX request since Drupals built
     // in modal dialogues does not handle buttons that are not a primary
     // button very well.
     if ($this->getRequest()->isXmlHttpRequest()) {
         unset($form['actions']['cancel']);
     }
     return $form;
 }

 /**
  * {@inheritdoc}
  */
 public function buildForm(array $form, FormStateInterface $form_state, $user = NULL, $role = NULL)
 {
     $expiration = db_query('SELECT expiration FROM {uc_roles_expirations} WHERE uid = :uid AND rid = :rid', [':uid' => $user->id(), ':rid' => $role])->fetchField();
     if ($expiration) {
         $role_name = _uc_role_get_name($role);
         $form['user'] = array('#type' => 'value', '#value' => $user->getUsername());
         $form['uid'] = array('#type' => 'value', '#value' => $user->id());
         $form['role'] = array('#type' => 'value', '#value' => $role_name);
         $form['rid'] = array('#type' => 'value', '#value' => $role);
     }
     return parent::buildForm($form, $form_state);
 }

 /**
  * {@inheritdoc}
  */
 public function buildForm(array $form, array &$form_state, PageInterface $page = NULL, $page_variant_id = NULL, $layout_region_id = NULL, $block_id = NULL)
 {
     $this->page = $page;
     $this->displayVariant = $this->page->getVariant($page_variant_id);
     $this->displayVariant->init($this->page->getExecutable());
     $this->block = $this->displayVariant->getBlock($block_id);
     $form = parent::buildForm($form, $form_state, $page, $page_variant_id, $layout_region_id, $block_id);
     if ($this->getRequest()->isXmlHttpRequest()) {
         $form['actions']['submit']['#ajax'] = array('callback' => array($this, 'submitForm'));
     }
     return $form;
 }

 public function buildForm(array $form, FormStateInterface $form_state, $field_group_name = NULL, $entity_type_id = NULL, $bundle = NULL, $context = NULL)
 {
     if ($context == 'form') {
         $mode = $this->getRequest()->attributes->get('form_mode_name');
     } else {
         $mode = $this->getRequest()->attributes->get('view_mode_name');
     }
     if (empty($mode)) {
         $mode = 'default';
     }
     $this->fieldGroup = field_group_load_field_group($field_group_name, $entity_type_id, $bundle, $context, $mode);
     return parent::buildForm($form, $form_state);
 }