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<?php
/**
 * @file
 * Contains \Drupal\text\TextProcessed.
 */
namespace Drupal\text;
use Drupal\Core\TypedData\DataDefinitionInterface;
use Drupal\Core\TypedData\TypedDataInterface;
use Drupal\Core\TypedData\TypedData;
/**
 * A computed property for processing text with a format.
 *
 * Required settings (below the definition's 'settings' key) are:
 *  - text source: The text property containing the to be processed text.
 */
class TextProcessed extends TypedData {
  /**
   * Cached processed text.
   *
   * @var string|null
   */
  protected $processed = NULL;
  /**
   * {@inheritdoc}
   */
  public function __construct(DataDefinitionInterface $definition, $name = NULL, TypedDataInterface $parent = NULL) {
    parent::__construct($definition, $name, $parent);
    if ($definition->getSetting('text source') === NULL) {
      throw new \InvalidArgumentException("The definition's 'text source' key has to specify the name of the text property to be processed.");
    }
  }
  /**
   * {@inheritdoc}
   */
  public function getValue() {
    if ($this->processed !== NULL) {
      return $this->processed;
    }
    $item = $this->getParent();
    $text = $item->{($this->definition->getSetting('text source'))};
    // Avoid running check_markup() on empty strings.
    if (!isset($text) || $text === '') {
      $this->processed = '';
    }
    else {
      $this->processed = check_markup($text, $item->format, $item->getLangcode());
    }
    return $this->processed;
  }
  /**
   * {@inheritdoc}
   */
  public function setValue($value, $notify = TRUE) {
    $this->processed = $value;
    // Notify the parent of any changes.
    if ($notify && isset($this->parent)) {
      $this->parent->onChange($this->name);
    }
  }
}