public function ViewPreviewForm::form in Drupal 9

Same name and namespace in other branches

1. 8 core/modules/views_ui/src/ViewPreviewForm.php \Drupal\views_ui\ViewPreviewForm::form()

Gets the actual form array to be built.

Overrides EntityForm::form

See also

\Drupal\Core\Entity\EntityForm::processForm()

\Drupal\Core\Entity\EntityForm::afterBuild()

File

core/modules/views_ui/src/ViewPreviewForm.php, line 18

Class

ViewPreviewForm

Form controller for the Views preview form.

Namespace

Drupal\views_ui

Code

public function form(array $form, FormStateInterface $form_state) {
  $view = $this->entity;
  $form['#prefix'] = '<div id="views-preview-wrapper" class="views-preview-wrapper views-admin clearfix">';
  $form['#suffix'] = '</div>';
  $form['#id'] = 'views-ui-preview-form';
  $form_state
    ->disableCache();
  $form['controls']['#attributes'] = [
    'class' => [
      'clearfix',
    ],
  ];
  $form['controls']['title'] = [
    '#prefix' => '<h2 class="view-preview-form__title">',
    '#markup' => $this
      ->t('Preview'),
    '#suffix' => '</h2>',
  ];

  // Add a checkbox controlling whether or not this display auto-previews.
  $form['controls']['live_preview'] = [
    '#type' => 'checkbox',
    '#id' => 'edit-displays-live-preview',
    '#title' => $this
      ->t('Auto preview'),
    '#default_value' => \Drupal::config('views.settings')
      ->get('ui.always_live_preview'),
  ];

  // Add the arguments textfield
  $form['controls']['view_args'] = [
    '#type' => 'textfield',
    '#title' => $this
      ->t('Preview with contextual filters:'),
    '#description' => $this
      ->t('Separate contextual filter values with a "/". For example, %example.', [
      '%example' => '40/12/10',
    ]),
    '#id' => 'preview-args',
  ];
  $args = [];
  if (!$form_state
    ->isValueEmpty('view_args')) {
    $args = explode('/', $form_state
      ->getValue('view_args'));
  }
  $user_input = $form_state
    ->getUserInput();
  if ($form_state
    ->get('show_preview') || !empty($user_input['js'])) {
    $form['preview'] = [
      '#weight' => 110,
      '#theme_wrappers' => [
        'container',
      ],
      '#attributes' => [
        'id' => 'views-live-preview',
        'class' => [
          'views-live-preview',
        ],
      ],
      'preview' => $view
        ->renderPreview($this->displayID, $args),
    ];
  }
  $uri = $view
    ->toUrl('preview-form');
  $uri
    ->setRouteParameter('display_id', $this->displayID);
  $form['#action'] = $uri
    ->toString();
  return $form;
}