UserPermissionsModuleSpecificForm.php

<?php

namespace Drupal\user\Form;

use Drupal\Core\Access\AccessResult;
use Drupal\Core\Access\AccessResultInterface;
use Drupal\Core\Form\FormStateInterface;

/**
 * Provides the user permissions administration form for one or more module(s).
 *
 * @internal
 */
class UserPermissionsModuleSpecificForm extends UserPermissionsForm {
    
    /**
     * The module list.
     *
     * A keyed array of module machine names.
     *
     * @var string[]
     */
    protected $moduleList;
    
    /**
     * {@inheritdoc}
     */
    protected function permissionsByProvider() : array {
        return array_intersect_key(parent::permissionsByProvider(), array_flip($this->moduleList));
    }
    
    /**
     * Builds the user permissions administration form for a specific module(s).
     *
     * @param array $form
     *   An associative array containing the structure of the form.
     * @param \Drupal\Core\Form\FormStateInterface $form_state
     *   The current state of the form.
     * @param string $modules
     *   (optional) One or more module machine names, comma-separated.
     */
    public function buildForm(array $form, FormStateInterface $form_state, $modules = '') : array {
        $this->moduleList = explode(',', $modules);
        return parent::buildForm($form, $form_state);
    }
    
    /**
     * Checks that at least one module defines permissions.
     *
     * @param string $modules
     *   (optional) One or more module machine names, comma-separated.
     *
     * @return \Drupal\Core\Access\AccessResultInterface
     *   The access result.
     */
    public function access($modules) : AccessResultInterface {
        foreach (explode(',', $modules) as $module) {
            if ($this->permissionHandler
                ->moduleProvidesPermissions($module)) {
                return AccessResult::allowed();
            }
        }
        return AccessResult::forbidden();
    }

}