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| <?php | |
| /** | |
| * @file | |
| * Contains \Drupal\Core\Render\Element\PathElement. | |
| */ | |
| namespace Drupal\Core\Render\Element; | |
| use Drupal\Core\Form\FormStateInterface; | |
| /** | |
| * Provides a matched path render element. | |
| * | |
| * Provides a form element to enter a path which can be optionally validated and | |
| * stored as either a \Drupal\Core\Url value object or a array containing a | |
| * route name and route parameters pair. | |
| * | |
| * @FormElement("path") | |
| */ | |
| class PathElement extends Textfield { | |
| /** | |
| * Do not convert the submitted value from the user-supplied path. | |
| */ | |
| const CONVERT_NONE = 0; | |
| /** | |
| * Convert the submitted value into a route name and parameter pair. | |
| */ | |
| const CONVERT_ROUTE = 1; | |
| /** | |
| * Convert the submitted value into a \Drupal\Core\Url value object. | |
| */ | |
| const CONVERT_URL = 2; | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function getInfo() { | |
| $info = parent::getInfo(); | |
| $class = get_class($this); | |
| $info['#validate_path'] = TRUE; | |
| $info['#convert_path'] = self::CONVERT_ROUTE; | |
| $info['#element_validate'] = array( | |
| array($class, 'validateMatchedPath'), | |
| ); | |
| return $info; | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public static function valueCallback(&$element, $input, FormStateInterface $form_state) { | |
| return NULL; | |
| } | |
| /** | |
| * Form element validation handler for matched_path elements. | |
| * | |
| * Note that #maxlength is validated by _form_validate() already. | |
| * | |
| * This checks that the submitted value matches an active route. | |
| */ | |
| public static function validateMatchedPath(&$element, FormStateInterface $form_state, &$complete_form) { | |
| if (!empty($element['#value']) && ($element['#validate_path'] || $element['#convert_path'] != self::CONVERT_NONE)) { | |
| /** @var \Drupal\Core\Url $url */ | |
| if ($url = \Drupal::service('path.validator')->getUrlIfValid($element['#value'])) { | |
| if ($url->isExternal()) { | |
| $form_state->setError($element, t('You cannot use an external URL, please enter a relative path.')); | |
| return; | |
| } | |
| if ($element['#convert_path'] == self::CONVERT_NONE) { | |
| // Url is valid, no conversion required. | |
| return; | |
| } | |
| // We do the value conversion here whilst the Url object is in scope | |
| // after validation has occurred. | |
| if ($element['#convert_path'] == self::CONVERT_ROUTE) { | |
| $form_state->setValueForElement($element, array( | |
| 'route_name' => $url->getRouteName(), | |
| 'route_parameters' => $url->getRouteParameters(), | |
| )); | |
| return; | |
| } | |
| elseif ($element['#convert_path'] == self::CONVERT_URL) { | |
| $form_state->setValueForElement($element, $url); | |
| return; | |
| } | |
| } | |
| $form_state->setError($element, t('This path does not exist or you do not have permission to link to %path.', array( | |
| '%path' => $element['#value'], | |
| ))); | |
| } | |
| } | |
| } |