mutual_credit-5.0.x-dev/src/Plugin/Field/FieldType/WorthFieldItemList.php

<?php

namespace Drupal\mcapi\Plugin\Field\FieldType;

use Drupal\Core\Field\FieldItemList;

/**
 * Represents a entity worth field.
 */
class WorthFieldItemList extends FieldItemList {

  /**
   * {@inheritdoc}
   */
  public function isEmpty() {
    $empties = [];
    foreach ($this->list as $item) {
      if (empty($item->value) && empty($item->currency->zero)) {
        $empties[] = $item->currency->id;
      }
    }
    return count($empties) == count($this->list);
  }

  /**
   * Get a list of currencies.
   *
   * @return array
   *   The currencies or Currency IDs
   */
  public function currencies() : array {
    $c = [];
    foreach ($this->list as $item) {
      $c[] = $item->curr_id;
    }
    return $c;
  }

  /**
   * {@inheritdoc}
   */
  public function generateSampleItems($count = 1) {
    // We ignore the given $count, add one or maybe 2 currencies
    // Use 1 or maybe two of the active currencies.
    $currencies = \Drupal::entityTypeManager()->getStorage('mcapi_currency')->loadByProperties(['status' => TRUE]);
    $field_definition = $this->getFieldDefinition();
    $field_type_class = \Drupal::service('plugin.manager.field.field_type')->getPluginClass($field_definition->getType());
    $temp = $currencies;
    shuffle($temp);
    $currency = array_pop($temp);
    $field_definition->currency = $currency;
    $values[] = $field_type_class::generateSampleValue($field_definition);
    if (rand(0, 4) == 0) {
      if ($field_definition->currency = array_pop($temp)) {
        $values[] = $field_type_class::generateSampleValue($field_definition);
      }
    }
    $this->setValue($values);
  }

  /**
   * {@inheritdoc}
   */
  public function __get($name) {
    if ($result = parent::__get($name)) {
      return $result;
    }
    foreach ($this->list as $item) {
      if ($item->curr_id == $name) {
        return $item->value;
      }
    }
  }

  public function __toString() {
    $vals = [];
    foreach ($this->list as $item) {
      $vals[] = (string)$item;
    }
    return implode(' | ', $vals);
  }

  /**
   * Formatting with all the field scaffolding.
   * @param int $mode
   *   One of the DISPLAY constants on \Drupal\mcapi\Entity\CurrencyInterface
   * @return RenderableInterface
   */
  public function format(int $mode = 2) : string {
    foreach ($this->list as $delta => $item) {
      $formatted[] = $item->format($mode);
    }
    return implode(', ', $formatted);
  }
}