public function ConfigHandler::buildForm in Drupal 8

Same name and namespace in other branches

1. 9 core/modules/views_ui/src/Form/Ajax/ConfigHandler.php \Drupal\views_ui\Form\Ajax\ConfigHandler::buildForm()

Form constructor.

Parameters

array $form: An associative array containing the structure of the form.

\Drupal\Core\Form\FormStateInterface $form_state: The current state of the form.

Return value

array The form structure.

Overrides FormInterface::buildForm

File

core/modules/views_ui/src/Form/Ajax/ConfigHandler.php, line 52

Class

ConfigHandler

Provides a form for configuring an item in the Views UI.

Namespace

Drupal\views_ui\Form\Ajax

Code

public function buildForm(array $form, FormStateInterface $form_state, Request $request = NULL) {

  /** @var \Drupal\views\Entity\View $view */
  $view = $form_state
    ->get('view');
  $display_id = $form_state
    ->get('display_id');
  $type = $form_state
    ->get('type');
  $id = $form_state
    ->get('id');
  $form = [
    'options' => [
      '#tree' => TRUE,
      '#theme_wrappers' => [
        'container',
      ],
      '#attributes' => [
        'class' => [
          'scroll',
        ],
        'data-drupal-views-scroll' => TRUE,
      ],
    ],
  ];
  $executable = $view
    ->getExecutable();
  $save_ui_cache = FALSE;
  if (!$executable
    ->setDisplay($display_id)) {
    $form['markup'] = [
      '#markup' => $this
        ->t('Invalid display id @display', [
        '@display' => $display_id,
      ]),
    ];
    return $form;
  }
  $item = $executable
    ->getHandler($display_id, $type, $id);
  if ($item) {
    $handler = $executable->display_handler
      ->getHandler($type, $id);
    if (empty($handler)) {
      $form['markup'] = [
        '#markup' => $this
          ->t("Error: handler for @table > @field doesn't exist!", [
          '@table' => $item['table'],
          '@field' => $item['field'],
        ]),
      ];
    }
    else {
      $types = ViewExecutable::getHandlerTypes();

      // If this item can come from the default display, show a dropdown
      // that lets the user choose which display the changes should apply to.
      if ($executable->display_handler
        ->defaultableSections($types[$type]['plural'])) {
        $section = $types[$type]['plural'];
        $form_state
          ->set('section', $section);
        views_ui_standard_display_dropdown($form, $form_state, $section);
      }

      // A whole bunch of code to figure out what relationships are valid for
      // this item.
      $relationships = $executable->display_handler
        ->getOption('relationships');
      $relationship_options = [];
      foreach ($relationships as $relationship) {

        // relationships can't link back to self. But also, due to ordering,
        // relationships can only link to prior relationships.
        if ($type == 'relationship' && $id == $relationship['id']) {
          break;
        }
        $relationship_handler = Views::handlerManager('relationship')
          ->getHandler($relationship);

        // ignore invalid/broken relationships.
        if (empty($relationship_handler)) {
          continue;
        }

        // If this relationship is valid for this type, add it to the list.
        $data = Views::viewsData()
          ->get($relationship['table']);
        if (isset($data[$relationship['field']]['relationship']['base']) && ($base = $data[$relationship['field']]['relationship']['base'])) {
          $base_fields = Views::viewsDataHelper()
            ->fetchFields($base, $type, $executable->display_handler
            ->useGroupBy());
          if (isset($base_fields[$item['table'] . '.' . $item['field']])) {
            $relationship_handler
              ->init($executable, $executable->display_handler, $relationship);
            $relationship_options[$relationship['id']] = $relationship_handler
              ->adminLabel();
          }
        }
      }
      if (!empty($relationship_options)) {

        // Make sure the existing relationship is even valid. If not, force
        // it to none.
        $base_fields = Views::viewsDataHelper()
          ->fetchFields($view
          ->get('base_table'), $type, $executable->display_handler
          ->useGroupBy());
        if (isset($base_fields[$item['table'] . '.' . $item['field']])) {
          $relationship_options = array_merge([
            'none' => $this
              ->t('Do not use a relationship'),
          ], $relationship_options);
        }
        $rel = empty($item['relationship']) ? 'none' : $item['relationship'];
        if (empty($relationship_options[$rel])) {

          // Pick the first relationship.
          $rel = key($relationship_options);

          // We want this relationship option to get saved even if the user
          // skips submitting the form.
          $executable
            ->setHandlerOption($display_id, $type, $id, 'relationship', $rel);
          $save_ui_cache = TRUE;

          // Re-initialize with new relationship.
          $item['relationship'] = $rel;
          $handler
            ->init($executable, $executable->display_handler, $item);
        }
        $form['options']['relationship'] = [
          '#type' => 'select',
          '#title' => $this
            ->t('Relationship'),
          '#options' => $relationship_options,
          '#default_value' => $rel,
          '#weight' => -500,
        ];
      }
      else {
        $form['options']['relationship'] = [
          '#type' => 'value',
          '#value' => 'none',
        ];
      }
      $form['#title'] = $this
        ->t('Configure @type: @item', [
        '@type' => $types[$type]['lstitle'],
        '@item' => $handler
          ->adminLabel(),
      ]);
      if (!empty($handler->definition['help'])) {
        $form['options']['form_description'] = [
          '#markup' => $handler->definition['help'],
          '#theme_wrappers' => [
            'container',
          ],
          '#attributes' => [
            'class' => [
              'js-form-item form-item description',
            ],
          ],
          '#weight' => -1000,
        ];
      }
      $form['#section'] = $display_id . '-' . $type . '-' . $id;

      // Get form from the handler.
      $handler
        ->buildOptionsForm($form['options'], $form_state);
      $form_state
        ->set('handler', $handler);
    }
    $name = $form_state
      ->get('update_name');
    $view
      ->getStandardButtons($form, $form_state, 'views_ui_config_item_form', $name);

    // Add a 'remove' button.
    $form['actions']['remove'] = [
      '#type' => 'submit',
      '#value' => $this
        ->t('Remove'),
      '#submit' => [
        [
          $this,
          'remove',
        ],
      ],
      '#limit_validation_errors' => [
        [
          'override',
        ],
      ],
      '#button_type' => 'danger',
    ];
  }
  if ($save_ui_cache) {
    $view
      ->cacheSet();
  }
  return $form;
}