clientside_validation.module in Clientside Validation 2.0.x

Hook implementations for the Clientside Validation module.

File

clientside_validation.module

<?php

/**
 * @file
 * Hook implementations for the Clientside Validation module.
 */
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Render\Element;

/**
 * Implements hook_form_alter().
 */
function clientside_validation_form_alter(&$form, FormStateInterface &$form_state, $form_id) {
  $form['#after_build'][] = 'clientside_validation_form_after_build';
}

/**
 * Form after build callback.
 */
function clientside_validation_form_after_build($form, FormStateInterface $form_state) {
  clientside_validation_add_validation($form, $form_state, $form['#form_id']);
  clientside_validation_form_after_build_recurse($form['#form_id'], $form, $form_state);
  return $form;
}

/**
 * Recursive function to add clientside validation to a from.
 */
function clientside_validation_form_after_build_recurse($form_id, &$form, &$form_state) {
  if ($children = Element::children($form)) {
    foreach ($children as $item) {
      $element =& $form[$item];
      clientside_validation_add_validation($element, $form_state, $form_id);
      if (isset($element['#type']) && $element['#type'] == 'submit' && isset($element['#limit_validation_errors']) && empty($element['#limit_validation_errors']) && $element['#limit_validation_errors'] !== FALSE) {
        $element['#attributes']['class'][] = 'cancel';
      }
      clientside_validation_form_after_build_recurse($form_id, $element, $form_state);
    }
  }
}

/**
 * Add clientside validation to a form element.
 */
function clientside_validation_add_validation(&$element, FormStateInterface &$form_state, $form_id) {
  if (clientside_validation_should_validate($element, $form_state, $form_id)) {
    $validators = \Drupal::service('plugin.manager.clientside_validation.validators')
      ->getValidators($element, $form_state);
    foreach ($validators as $validator) {
      $validator
        ->addValidation($element, $form_state);
    }
  }
}

/**
 * Check whether or not an element should be validated.
 */
function clientside_validation_should_validate($element, FormStateInterface &$form_state, $form_id) {
  $hook = 'clientside_validation_should_validate';
  $hook_args = [
    $element,
    $form_state,
    $form_id,
  ];

  /** @var \Drupal\Core\Extension\ModuleHandlerInterface $module_handler */
  $module_handler = \Drupal::moduleHandler();
  $implementations = $module_handler
    ->getImplementations($hook);
  foreach ($implementations as $implementation) {
    if ($module_handler
      ->invoke($implementation, $hook, $hook_args) === FALSE) {

      // Don't validate even if any one implementation returns false.
      return FALSE;
    }
  }
  return TRUE;
}

Functions

Name	Description
clientside_validation_add_validation	Add clientside validation to a form element.
clientside_validation_form_after_build	Form after build callback.
clientside_validation_form_after_build_recurse	Recursive function to add clientside validation to a from.
clientside_validation_form_alter	Implements hook_form_alter().
clientside_validation_should_validate	Check whether or not an element should be validated.