public static function Color::validateColor in Drupal 10

Same name and namespace in other branches

1. 8 core/lib/Drupal/Core/Render/Element/Color.php \Drupal\Core\Render\Element\Color::validateColor()
2. 9 core/lib/Drupal/Core/Render/Element/Color.php \Drupal\Core\Render\Element\Color::validateColor()

Form element validation handler for #type 'color'.

File

core/lib/Drupal/Core/Render/Element/Color.php, line 52

Class

Color

Provides a form element for choosing a color.

Namespace

Drupal\Core\Render\Element

Code

public static function validateColor(&$element, FormStateInterface $form_state, &$complete_form) {
  $value = trim($element['#value']);

  // Default to black if no value is given.
  // @see http://www.w3.org/TR/html5/number-state.html#color-state
  if ($value === '') {
    $form_state
      ->setValueForElement($element, '#000000');
  }
  else {

    // Try to parse the value and normalize it.
    try {
      $form_state
        ->setValueForElement($element, ColorUtility::rgbToHex(ColorUtility::hexToRgb($value)));
    } catch (\InvalidArgumentException $e) {
      $form_state
        ->setError($element, t('%name must be a valid color.', [
        '%name' => empty($element['#title']) ? $element['#parents'][0] : $element['#title'],
      ]));
    }
  }
}