funder_field-1.1.0-alpha1/src/Plugin/Field/FieldFormatter/FunderFieldDefaultFormatter.php

<?php

namespace Drupal\funder_field\Plugin\Field\FieldFormatter;

use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Field\FormatterBase;
use Drupal\Core\Form\FormStateInterface;

/**
 * Plugin implementation of the 'Default' formatter.
 *
 * @FieldFormatter(
 *   id = "funder_field_default",
 *   module = "funder_field",
 *   label = @Translation("Default"),
 *   field_types = {
 *     "funder_field"
 *   }
 * )
 */
class FunderFieldDefaultFormatter extends FormatterBase
{

  public function viewElements(FieldItemListInterface $items, $langcode)
  {
    $element = [];

    foreach ($items as $delta => $item) {
      $values = $item->getValue();
      $element[$delta] = [
        '#theme' => 'funder_field_default',
        "#attributes" => [
          'class' => [
            'funder_field'
          ],
        ],
      ];
      $element[$delta]["#funder_name"] = $values['funder_name'];

      if (!is_null($values['award'])) {
        $element[$delta]['#award'] = $values['award'];
      }
      if (!is_null($values['award_url'])) {
        $element[$delta]['#award_url'] = $values['award_url'];
      }
      $element[$delta]['#showAwardAsLink'] = $this->getSetting('showAwardAsLink');
    }
    //ksm($element);
    return $element;
  }

  /**
   * {@inheritdoc}
   */
  public static function defaultSettings()
  {
    return array_merge(
      [
        'showAwardAsLink' => FALSE,
      ],
      parent::defaultSettings());
  }

  /**
   * {@inheritdoc}
   */
  public function settingsSummary() {
    $this->sanitizeSettings();

    $summary = [];
    if ($this->getSetting('showAwardAsLink') === FALSE) {
      $summary[] = $this->t('Award Shown as Plain Text');
    }
    else {
      $summary[] = $this->t('Award Shown as Link');
    }
    return $summary;
  }

  /**
   * {@inheritdoc}
   */
  public function settingsForm(array $form, FormStateInterface $formState)
  {
    $this->sanitizeSettings();

    $marker = rand();
    //$elements = [];

    $form['showAwardAsLink'] = [
      '#title' => $this->t('Show Award as Link'),
      '#type' => 'checkbox',
      '#default_value' => $this->getSetting('showAwardAsLink'),
      '#weight' => 1,
    ];
    return $form;
  }

  protected function sanitizeSettings() {
    $showAwardAsLink      = $this->getSetting('showAwardAsLink');
    $this->setSetting('showFunderUrl', boolval($showAwardAsLink));
  }
}