ViewPreviewForm.php in Zircon Profile 8

Contains \Drupal\views_ui\ViewPreviewForm.

Namespace

Drupal\views_ui

File

core/modules/views_ui/src/ViewPreviewForm.php

<?php

/**
 * @file
 * Contains \Drupal\views_ui\ViewPreviewForm.
 */
namespace Drupal\views_ui;

use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Url;

/**
 * Form controller for the Views preview form.
 */
class ViewPreviewForm extends ViewFormBase {

  /**
   * {@inheritdoc}
   */
  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'] = array(
      'class' => array(
        'clearfix',
      ),
    );
    $form['controls']['title'] = array(
      '#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'] = array(
      '#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'] = array(
      '#type' => 'textfield',
      '#title' => $this
        ->t('Preview with contextual filters:'),
      '#description' => $this
        ->t('Separate contextual filter values with a "/". For example, %example.', array(
        '%example' => '40/12/10',
      )),
      '#id' => 'preview-args',
    );
    $args = array();
    if (!$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'] = array(
        '#weight' => 110,
        '#theme_wrappers' => array(
          'container',
        ),
        '#attributes' => array(
          'id' => 'views-live-preview',
          'class' => 'views-live-preview',
        ),
        'preview' => $view
          ->renderPreview($this->displayID, $args),
      );
    }
    $uri = $view
      ->urlInfo('preview-form');
    $uri
      ->setRouteParameter('display_id', $this->displayID);
    $form['#action'] = $uri
      ->toString();
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  protected function actions(array $form, FormStateInterface $form_state) {
    $view = $this->entity;
    return array(
      '#attributes' => array(
        'id' => 'preview-submit-wrapper',
        'class' => array(
          'preview-submit-wrapper',
        ),
      ),
      'button' => array(
        '#type' => 'submit',
        '#value' => $this
          ->t('Update preview'),
        '#attributes' => array(
          'class' => array(
            'arguments-preview',
          ),
        ),
        '#submit' => array(
          '::submitPreview',
        ),
        '#id' => 'preview-submit',
        '#ajax' => array(
          'url' => Url::fromRoute('entity.view.preview_form', [
            'view' => $view
              ->id(),
            'display_id' => $this->displayID,
          ]),
          'wrapper' => 'views-preview-wrapper',
          'event' => 'click',
          'progress' => array(
            'type' => 'fullscreen',
          ),
          'method' => 'replaceWith',
          'disable-refocus' => TRUE,
        ),
      ),
    );
  }

  /**
   * Form submission handler for the Preview button.
   */
  public function submitPreview($form, FormStateInterface $form_state) {
    $form_state
      ->set('show_preview', TRUE);
    $form_state
      ->setRebuild();
  }

}

Classes

Name	Description
ViewPreviewForm	Form controller for the Views preview form.