SocialGroupSelectorWidget.php in Open Social 8.4

Namespace

Drupal\social_group\Plugin\Field\FieldWidget

File

modules/social_features/social_group/src/Plugin/Field/FieldWidget/SocialGroupSelectorWidget.php

<?php

namespace Drupal\social_group\Plugin\Field\FieldWidget;

use Drupal\Core\Ajax\AjaxResponse;
use Drupal\Core\Ajax\HtmlCommand;
use Drupal\Core\Ajax\InvokeCommand;
use Drupal\Core\Config\ConfigFactoryInterface;
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Entity\FieldableEntityInterface;
use Drupal\Core\Extension\ModuleHandler;
use Drupal\Core\Field\FieldDefinitionInterface;
use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Field\Plugin\Field\FieldWidget\OptionsSelectWidget;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
use Drupal\Core\Session\AccountProxyInterface;
use Drupal\group\Entity\Group;
use Drupal\group\Plugin\GroupContentEnablerManager;
use Drupal\user\Entity\User;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * A widget to select a group when creating an entity in a group.
 *
 * @FieldWidget(
 *   id = "social_group_selector_widget",
 *   label = @Translation("Social group select list"),
 *   field_types = {
 *     "entity_reference",
 *     "list_integer",
 *     "list_float",
 *     "list_string"
 *   },
 *   multiple_values = TRUE
 * )
 */
class SocialGroupSelectorWidget extends OptionsSelectWidget implements ContainerFactoryPluginInterface {
  protected $configFactory;
  protected $moduleHander;
  protected $currentUser;
  protected $pluginManager;

  /**
   * Creates a SocialGroupSelectorWidget instance.
   *
   * {@inheritdoc}
   */
  public function __construct($plugin_id, $plugin_definition, FieldDefinitionInterface $field_definition, array $settings, array $third_party_settings, ConfigFactoryInterface $configFactory, AccountProxyInterface $currentUser, ModuleHandler $moduleHandler, GroupContentEnablerManager $pluginManager) {
    parent::__construct($plugin_id, $plugin_definition, $field_definition, $settings, $third_party_settings);
    $this->configFactory = $configFactory;
    $this->moduleHander = $moduleHandler;
    $this->currentUser = $currentUser;
    $this->pluginManager = $pluginManager;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
    return new static($plugin_id, $plugin_definition, $configuration['field_definition'], $configuration['settings'], $configuration['third_party_settings'], $container
      ->get('config.factory'), $container
      ->get('current_user'), $container
      ->get('module_handler'), $container
      ->get('plugin.manager.group_content_enabler'));
  }

  /**
   * Returns the array of options for the widget.
   *
   * @param \Drupal\Core\Entity\FieldableEntityInterface $entity
   *   The entity for which to return options.
   *
   * @return array
   *   The array of options for the widget.
   */
  protected function getOptions(FieldableEntityInterface $entity) {
    if (!isset($this->options)) {

      // Must be a node.
      if ($entity
        ->getEntityTypeId() !== 'node') {

        // We only handle nodes. When using this widget on other content types,
        // we simply return the normal options.
        return parent::getOptions($entity);
      }

      // Get the bundle fron the node.
      $entity_type = $entity
        ->bundle();
      $account = $entity
        ->getOwner();

      // Limit the settable options for the current user account.
      $options = $this->fieldDefinition
        ->getFieldStorageDefinition()
        ->getOptionsProvider($this->column, $entity)
        ->getSettableOptions($account);

      // Check for each group type if the content type is installed.
      foreach ($options as $key => $optgroup) {

        // Groups are in the array below.
        if (is_array($optgroup)) {

          // Loop through the groups.
          foreach ($optgroup as $gid => $title) {

            // If the group exists.
            if ($group = Group::load($gid)) {

              // Load all installed plugins for this group type.
              $plugin_ids = $this->pluginManager
                ->getInstalledIds($group
                ->getGroupType());

              // If the bundle is not installed,
              // then unset the entire optiongroup (=group type).
              if (!in_array('group_node:' . $entity_type, $plugin_ids)) {
                unset($options[$key]);
              }
            }

            // We need to check only one of each group type,
            // so break out the second each.
            break;
          }
        }
      }

      // Remove groups the user does not have create access to.
      if (!$account
        ->hasPermission('manage all groups')) {
        $options = $this
          ->removeGroupsWithoutCreateAccess($options, $account, $entity);
      }

      // Add an empty option if the widget needs one.
      if ($empty_label = $this
        ->getEmptyLabel()) {
        $options = [
          '_none' => $empty_label,
        ] + $options;
      }
      $module_handler = $this->moduleHander;
      $context = [
        'fieldDefinition' => $this->fieldDefinition,
        'entity' => $entity,
      ];
      $module_handler
        ->alter('options_list', $options, $context);
      array_walk_recursive($options, [
        $this,
        'sanitizeLabel',
      ]);
      $this->options = $options;
    }
    return $this->options;
  }

  /**
   * {@inheritdoc}
   */
  public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {
    $element = parent::formElement($items, $delta, $element, $form, $form_state);
    $element['#suffix'] = '<div id="group-selection-result"></div>';
    $element['#ajax'] = [
      'callback' => __CLASS__ . '::validateGroupSelection',
      'effect' => 'fade',
      'event' => 'change',
    ];

    // Unfortunately validateGroupSelection is cast as a static function
    // So I have to add this setting to the form in order to use it later on.
    $default_visibility = $this->configFactory
      ->get('entity_access_by_field.settings')
      ->get('default_visibility');
    $form['default_visibility'] = [
      '#type' => 'value',
      '#value' => $default_visibility,
    ];
    $change_group_node = $this->configFactory
      ->get('social_group.settings')
      ->get('allow_group_selection_in_node');

    /* @var \Drupal\Core\Entity\EntityInterface $entity */
    $entity = $form_state
      ->getFormObject()
      ->getEntity();

    // If it is a new node lets add the current group.
    if (!$entity
      ->id()) {
      $current_group = _social_group_get_current_group();
      if (!empty($current_group) && empty($element['#default_value'])) {
        $element['#default_value'] = [
          $current_group
            ->id(),
        ];
      }
    }
    else {
      if (!$change_group_node && !$this->currentUser
        ->hasPermission('manage all groups')) {
        $element['#disabled'] = TRUE;
        $element['#description'] = t('Moving content after creation function has been disabled. In order to move this content, please contact a site manager.');
      }
    }
    return $element;
  }

  /**
   * Validate the group selection and change the visibility settings.
   *
   * @param array $form
   *   Form to process.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   Form state to process.
   *
   * @return \Drupal\Core\Ajax\AjaxResponse
   *   Response changing values of the visibility field and set status message.
   */
  public static function validateGroupSelection(array $form, FormStateInterface $form_state) {
    $ajax_response = new AjaxResponse();
    $selected_visibility = $form_state
      ->getValue('field_content_visibility');
    if (!empty($selected_visibility)) {
      $selected_visibility = $selected_visibility['0']['value'];
    }
    if ($selected_groups = $form_state
      ->getValue('groups')) {
      foreach ($selected_groups as $selected_group_key => $selected_group) {
        $gid = $selected_group['target_id'];
        $group = Group::load($gid);
        $group_type_id = $group
          ->getGroupType()
          ->id();
        $allowed_visibility_options = social_group_get_allowed_visibility_options_per_group_type($group_type_id);

        // TODO Add support for multiple groups, for now just process 1 group.
        break;
      }
    }
    else {
      $default_visibility = $form_state
        ->getValue('default_visibility');
      $entity = $form_state
        ->getFormObject()
        ->getEntity();
      $allowed_visibility_options = social_group_get_allowed_visibility_options_per_group_type(NULL, NULL, $entity);
      $ajax_response
        ->addCommand(new InvokeCommand('#edit-field-content-visibility-' . $default_visibility, 'prop', [
        'checked',
        'checked',
      ]));
    }
    foreach ($allowed_visibility_options as $visibility => $allowed) {
      $ajax_response
        ->addCommand(new InvokeCommand('#edit-field-content-visibility-' . $visibility, 'addClass', [
        'js--animate-enabled-form-control',
      ]));
      if ($allowed === TRUE) {
        $ajax_response
          ->addCommand(new InvokeCommand('#edit-field-content-visibility-' . $visibility, 'removeAttr', [
          'disabled',
        ]));
        if (empty($default_visibility) || $visibility === $default_visibility) {
          $ajax_response
            ->addCommand(new InvokeCommand('#edit-field-content-visibility-' . $visibility, 'prop', [
            'checked',
            'checked',
          ]));
        }
      }
      else {
        if ($selected_visibility && $selected_visibility === $visibility) {
          $ajax_response
            ->addCommand(new InvokeCommand('#edit-field-content-visibility-' . $visibility, 'removeAttr', [
            'checked',
          ]));
        }
        $ajax_response
          ->addCommand(new InvokeCommand('#edit-field-content-visibility-' . $visibility, 'prop', [
          'disabled',
          'disabled',
        ]));
      }
      $ajax_response
        ->addCommand(new InvokeCommand('#edit-field-content-visibility-' . $visibility, 'change'));
    }
    $text = t('Changing the group may have impact on the <strong>visibility settings</strong>.');
    drupal_set_message($text, 'info');
    $alert = [
      '#type' => 'status_messages',
    ];
    $ajax_response
      ->addCommand(new HtmlCommand('#group-selection-result', $alert));
    return $ajax_response;
  }

  /**
   * Remove options from the list.
   *
   * @param array $options
   *   A list of options to check.
   * @param \Drupal\user\Entity\User $account
   *   The user to check for.
   * @param \Drupal\Core\Entity\EntityInterface $entity
   *   The entity to check for.
   *
   * @return array
   *   An list of options for the field containing groups with create access.
   */
  private function removeGroupsWithoutCreateAccess(array $options, User $account, EntityInterface $entity) {
    foreach ($options as $option_category_key => $groups_in_category) {
      if (is_array($groups_in_category)) {
        foreach ($groups_in_category as $gid => $group_title) {
          if (!$this
            ->checkGroupContentCreateAccess($gid, $account, $entity)) {
            unset($options[$option_category_key][$gid]);
          }
        }

        // Remove the entire category if there are no groups for this author.
        if (empty($options[$option_category_key])) {
          unset($options[$option_category_key]);
        }
      }
      else {
        if (!$this
          ->checkGroupContentCreateAccess($option_category_key, $account, $entity)) {
          unset($options[$option_category_key]);
        }
      }
    }
    return $options;
  }

  /**
   * Check if user may create content of bundle in group.
   *
   * @param int $gid
   *   Group id.
   * @param \Drupal\user\Entity\User $account
   *   The user to check for.
   * @param \Drupal\Core\Entity\EntityInterface $entity
   *   The node bundle to check for.
   *
   * @return int
   *   Either TRUE or FALSE.
   */
  private function checkGroupContentCreateAccess($gid, User $account, EntityInterface $entity) {
    $group = Group::load($gid);
    if ($group
      ->hasPermission('create group_' . $entity
      ->getEntityTypeId() . ':' . $entity
      ->bundle() . ' entity', $account)) {
      if ($group
        ->getGroupType()
        ->id() === 'public_group') {
        $config = $this->configFactory
          ->get('entity_access_by_field.settings');
        if ($config
          ->get('disable_public_visibility') === 1 && !$account
          ->hasPermission('override disabled public visibility')) {
          return FALSE;
        }
      }
      return TRUE;
    }
    return FALSE;
  }

}

Classes

Name	Description
SocialGroupSelectorWidget	A widget to select a group when creating an entity in a group.