facets_range_nouislider-1.0.0/src/Plugin/facets/widget/RangeNoUiSliderWidget.php

<?php

namespace Drupal\facets_range_nouislider\Plugin\facets\widget;

use Drupal\Core\Form\FormStateInterface;
use Drupal\facets\FacetInterface;

/**
 * The range NoUiSlider widget.
 *
 * @FacetsWidget(
 *   id = "range_nouislider",
 *   label = @Translation("Range NoUiSlider"),
 *   description = @Translation("A widget that shows a range NoUiSlider."),
 * )
 */
class RangeNoUiSliderWidget extends NoUiSliderWidget {

  /**
   * @param FacetInterface $facet
   *
   * @return array
   */
  public function build(FacetInterface $facet): array {
    $build = parent::build($facet);

    if (empty($facet->getResults())) {
      return $build;
    }

    $active = $facet->getActiveItems();
    $facet_settings = &$build['#attached']['drupalSettings']['facets']['sliders'][$facet->id()];

    $facet_settings['range'] = TRUE;
    $facet_settings['url'] = reset($facet_settings['urls']);

    unset($facet_settings['value']);
    unset($facet_settings['urls']);

    $min = $facet_settings['min'];
    $max = $facet_settings['max'];
    $facet_settings['values'] = [
      isset($active[0][0]) ? (float) $active[0][0] : $min,
      isset($active[0][1]) ? (float) $active[0][1] : $max,
    ];

    $facet_settings = array_merge($facet_settings, $this->getConfiguration());

    // Add inputs template.
    if ($facet_settings['add_inputs']) {

      $input_to = [
        '#type' => 'textfield',
        '#title' => $this->getConfiguration()['to'],
        '#attributes' => [
          'id' => [
            'nouislider-input-to',
          ],
          'class' => [
            'nouislider-input',
          ],
        ],
      ];

      $search = 'facets_range_nouislider_form';
      $found = NULL;
      // Get parent template.
      array_walk($build['#items'], function ($item, $key) use ($search, &$found) {
        if (in_array($search, $item)) {
          $found = $key;
        }
      });

      $input_from = $build['#items'][$found]['#inputs'];
      $build['#items'][$found]['#inputs'] = [$input_from, $input_to];

    }

    return $build;
  }

  /**
   * @param array $form
   * @param FormStateInterface $form_state
   * @param FacetInterface $facet
   *
   * @return array
   */
  public function buildConfigurationForm(array $form, FormStateInterface $form_state, FacetInterface $facet): array {
    $config = $this->getConfiguration();
    $form = parent::buildConfigurationForm($form, $form_state, $facet);

    $form['to'] = [
      '#type' => 'textfield',
      '#size' => 5,
      '#title' => $this->t('Label to'),
      '#default_value' => $config['to'],
    ];

    return $form;
  }

  /**
   * @param string $name
   * @param string $type
   *
   * @return bool
   */
  public function isPropertyRequired($name, $type): bool {
    if ($name === 'range_slider' && $type === 'processors') {
      return TRUE;
    }
    if ($name === 'show_only_one_result' && $type === 'settings') {
      return TRUE;
    }

    return FALSE;
  }

  /**
   * @return string
   */
  public function getQueryType(): string {
    return 'range';
  }

}