class FontFamily

class FontFamily extends DesignTokenValuePluginBase {
  
  /**
   * The array of font names (ordered from most to least preferred).
   */
  protected array $value;
  
  /**
   * {@inheritdoc}
   */
  public function defaultConfiguration() : array {
    return [
      'value' => [],
    ] + parent::defaultConfiguration();
  }
  
  /**
   * {@inheritdoc}
   */
  public function setConfiguration(array $configuration) : static {
    parent::setConfiguration($configuration);
    if (is_array($this->configuration['value'])) {
      $this->value = $this->configuration['value'];
    }
    elseif (is_string($this->configuration['value'])) {
      $this->value = [
        $this->configuration['value'],
      ];
    }
    return $this;
  }
  
  /**
   * {@inheritdoc}
   */
  public function toDtcg() : mixed {
    return $this->value;
  }
  
  /**
   * {@inheritdoc}
   */
  public function toCss() : string {
    return implode(', ', array_map(Html::escape(...), $this->value));
  }

}