class MenuForm in Drupal 9

Same name and namespace in other branches

8 core/modules/menu_ui/src/MenuForm.php \Drupal\menu_ui\MenuForm

Base form for menu edit forms.

@internal

Hierarchy

class \Drupal\Core\Form\FormBase implements ContainerInjectionInterface, FormInterface uses DependencySerializationTrait, LoggerChannelTrait, MessengerTrait, RedirectDestinationTrait, StringTranslationTrait
- class \Drupal\Core\Entity\EntityForm implements EntityFormInterface
  - class \Drupal\menu_ui\MenuForm

Expanded class hierarchy of MenuForm

File

core/modules/menu_ui/src/MenuForm.php, line 28

Namespace

Drupal\menu_ui

View source

class MenuForm extends EntityForm {

  /**
   * The menu link manager.
   *
   * @var \Drupal\Core\Menu\MenuLinkManagerInterface
   */
  protected $menuLinkManager;

  /**
   * The menu tree service.
   *
   * @var \Drupal\Core\Menu\MenuLinkTreeInterface
   */
  protected $menuTree;

  /**
   * The link generator.
   *
   * @var \Drupal\Core\Utility\LinkGeneratorInterface
   */
  protected $linkGenerator;

  /**
   * The menu_link_content storage handler.
   *
   * @var \Drupal\menu_link_content\MenuLinkContentStorageInterface
   */
  protected $menuLinkContentStorage;

  /**
   * The overview tree form.
   *
   * @var array
   */
  protected $overviewTreeForm = [
    '#tree' => TRUE,
  ];

  /**
   * Constructs a MenuForm object.
   *
   * @param \Drupal\Core\Menu\MenuLinkManagerInterface $menu_link_manager
   *   The menu link manager.
   * @param \Drupal\Core\Menu\MenuLinkTreeInterface $menu_tree
   *   The menu tree service.
   * @param \Drupal\Core\Utility\LinkGeneratorInterface $link_generator
   *   The link generator.
   * @param \Drupal\menu_link_content\MenuLinkContentStorageInterface $menu_link_content_storage
   *   The menu link content storage handler.
   */
  public function __construct(MenuLinkManagerInterface $menu_link_manager, MenuLinkTreeInterface $menu_tree, LinkGeneratorInterface $link_generator, MenuLinkContentStorageInterface $menu_link_content_storage) {
    $this->menuLinkManager = $menu_link_manager;
    $this->menuTree = $menu_tree;
    $this->linkGenerator = $link_generator;
    $this->menuLinkContentStorage = $menu_link_content_storage;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('plugin.manager.menu.link'), $container
      ->get('menu.link_tree'), $container
      ->get('link_generator'), $container
      ->get('entity_type.manager')
      ->getStorage('menu_link_content'));
  }

  /**
   * {@inheritdoc}
   */
  public function form(array $form, FormStateInterface $form_state) {
    $menu = $this->entity;
    if ($this->operation == 'edit') {
      $form['#title'] = $this
        ->t('Edit menu %label', [
        '%label' => $menu
          ->label(),
      ]);
    }
    $form['label'] = [
      '#type' => 'textfield',
      '#title' => $this
        ->t('Title'),
      '#default_value' => $menu
        ->label(),
      '#required' => TRUE,
    ];
    $form['id'] = [
      '#type' => 'machine_name',
      '#title' => $this
        ->t('Menu name'),
      '#default_value' => $menu
        ->id(),
      '#maxlength' => MenuStorage::MAX_ID_LENGTH,
      '#description' => $this
        ->t('A unique name to construct the URL for the menu. It must only contain lowercase letters, numbers and hyphens.'),
      '#machine_name' => [
        'exists' => [
          $this,
          'menuNameExists',
        ],
        'source' => [
          'label',
        ],
        'replace_pattern' => '[^a-z0-9-]+',
        'replace' => '-',
      ],
      // A menu's machine name cannot be changed.
      '#disabled' => !$menu
        ->isNew() || $menu
        ->isLocked(),
    ];
    $form['description'] = [
      '#type' => 'textfield',
      '#title' => $this
        ->t('Administrative summary'),
      '#maxlength' => 512,
      '#default_value' => $menu
        ->getDescription(),
    ];
    $form['langcode'] = [
      '#type' => 'language_select',
      '#title' => $this
        ->t('Menu language'),
      '#languages' => LanguageInterface::STATE_ALL,
      '#default_value' => $menu
        ->language()
        ->getId(),
    ];

    // Add menu links administration form for existing menus.
    if (!$menu
      ->isNew() || $menu
      ->isLocked()) {

      // Form API supports constructing and validating self-contained sections
      // within forms, but does not allow handling the form section's submission
      // equally separated yet. Therefore, we use a $form_state key to point to
      // the parents of the form section.
      // @see self::submitOverviewForm()
      $form_state
        ->set('menu_overview_form_parents', [
        'links',
      ]);
      $form['links'] = [];
      $form['links'] = $this
        ->buildOverviewForm($form['links'], $form_state);
    }
    return parent::form($form, $form_state);
  }

  /**
   * Returns whether a menu name already exists.
   *
   * @param string $value
   *   The name of the menu.
   *
   * @return bool
   *   Returns TRUE if the menu already exists, FALSE otherwise.
   */
  public function menuNameExists($value) {

    // Check first to see if a menu with this ID exists.
    if ($this->entityTypeManager
      ->getStorage('menu')
      ->getQuery()
      ->condition('id', $value)
      ->range(0, 1)
      ->count()
      ->execute()) {
      return TRUE;
    }

    // Check for a link assigned to this menu.
    return $this->menuLinkManager
      ->menuNameInUse($value);
  }

  /**
   * {@inheritdoc}
   */
  public function save(array $form, FormStateInterface $form_state) {
    $menu = $this->entity;
    $status = $menu
      ->save();
    $edit_link = $this->entity
      ->toLink($this
      ->t('Edit'), 'edit-form')
      ->toString();
    if ($status == SAVED_UPDATED) {
      $this
        ->messenger()
        ->addStatus($this
        ->t('Menu %label has been updated.', [
        '%label' => $menu
          ->label(),
      ]));
      $this
        ->logger('menu')
        ->notice('Menu %label has been updated.', [
        '%label' => $menu
          ->label(),
        'link' => $edit_link,
      ]);
    }
    else {
      $this
        ->messenger()
        ->addStatus($this
        ->t('Menu %label has been added.', [
        '%label' => $menu
          ->label(),
      ]));
      $this
        ->logger('menu')
        ->notice('Menu %label has been added.', [
        '%label' => $menu
          ->label(),
        'link' => $edit_link,
      ]);
    }
    $form_state
      ->setRedirectUrl($this->entity
      ->toUrl('edit-form'));
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    parent::submitForm($form, $form_state);
    if (!$this->entity
      ->isNew() || $this->entity
      ->isLocked()) {
      $this
        ->submitOverviewForm($form, $form_state);
    }
  }

  /**
   * Form constructor to edit an entire menu tree at once.
   *
   * Shows for one menu the menu links accessible to the current user and
   * relevant operations.
   *
   * This form constructor can be integrated as a section into another form. It
   * relies on the following keys in $form_state:
   * - menu: A menu entity.
   * - menu_overview_form_parents: An array containing the parent keys to this
   *   form.
   * Forms integrating this section should call menu_overview_form_submit() from
   * their form submit handler.
   */
  protected function buildOverviewForm(array &$form, FormStateInterface $form_state) {

    // Ensure that menu_overview_form_submit() knows the parents of this form
    // section.
    if (!$form_state
      ->has('menu_overview_form_parents')) {
      $form_state
        ->set('menu_overview_form_parents', []);
    }
    $form['#attached']['library'][] = 'menu_ui/drupal.menu_ui.adminforms';
    $tree = $this->menuTree
      ->load($this->entity
      ->id(), new MenuTreeParameters());

    // We indicate that a menu administrator is running the menu access check.
    $this
      ->getRequest()->attributes
      ->set('_menu_admin', TRUE);
    $manipulators = [
      [
        'callable' => 'menu.default_tree_manipulators:checkAccess',
      ],
      [
        'callable' => 'menu.default_tree_manipulators:generateIndexAndSort',
      ],
    ];
    $tree = $this->menuTree
      ->transform($tree, $manipulators);
    $this
      ->getRequest()->attributes
      ->set('_menu_admin', FALSE);

    // Determine the delta; the number of weights to be made available.
    $count = function (array $tree) {
      $sum = function ($carry, MenuLinkTreeElement $item) {
        return $carry + $item
          ->count();
      };
      return array_reduce($tree, $sum);
    };
    $delta = max($count($tree), 50);
    $form['links'] = [
      '#type' => 'table',
      '#theme' => 'table__menu_overview',
      '#header' => [
        $this
          ->t('Menu link'),
        [
          'data' => $this
            ->t('Enabled'),
          'class' => [
            'checkbox',
          ],
        ],
        $this
          ->t('Weight'),
        [
          'data' => $this
            ->t('Operations'),
          'colspan' => 3,
        ],
      ],
      '#attributes' => [
        'id' => 'menu-overview',
      ],
      '#tabledrag' => [
        [
          'action' => 'match',
          'relationship' => 'parent',
          'group' => 'menu-parent',
          'subgroup' => 'menu-parent',
          'source' => 'menu-id',
          'hidden' => TRUE,
          'limit' => $this->menuTree
            ->maxDepth() - 1,
        ],
        [
          'action' => 'order',
          'relationship' => 'sibling',
          'group' => 'menu-weight',
        ],
      ],
    ];
    $form['links']['#empty'] = $this
      ->t('There are no menu links yet. <a href=":url">Add link</a>.', [
      ':url' => Url::fromRoute('entity.menu.add_link_form', [
        'menu' => $this->entity
          ->id(),
      ], [
        'query' => [
          'destination' => $this->entity
            ->toUrl('edit-form')
            ->toString(),
        ],
      ])
        ->toString(),
    ]);
    $links = $this
      ->buildOverviewTreeForm($tree, $delta);

    // Get the menu links which have pending revisions, and disable the
    // tabledrag if there are any.
    $edited_ids = array_filter(array_map(function ($element) {
      return is_array($element) && isset($element['#item']) && $element['#item']->link instanceof MenuLinkContent ? $element['#item']->link
        ->getMetaData()['entity_id'] : NULL;
    }, $links));
    $pending_menu_link_ids = array_intersect($this->menuLinkContentStorage
      ->getMenuLinkIdsWithPendingRevisions(), $edited_ids);
    if ($pending_menu_link_ids) {
      $form['help'] = [
        '#type' => 'container',
        'message' => [
          '#markup' => $this
            ->formatPlural(count($pending_menu_link_ids), '%capital_name contains 1 menu link with pending revisions. Manipulation of a menu tree having links with pending revisions is not supported, but you can re-enable manipulation by getting each menu link to a published state.', '%capital_name contains @count menu links with pending revisions. Manipulation of a menu tree having links with pending revisions is not supported, but you can re-enable manipulation by getting each menu link to a published state.', [
            '%capital_name' => $this->entity
              ->label(),
          ]),
        ],
        '#attributes' => [
          'class' => [
            'messages',
            'messages--warning',
          ],
        ],
        '#weight' => -10,
      ];
      unset($form['links']['#tabledrag']);
      unset($form['links']['#header'][2]);
    }
    foreach (Element::children($links) as $id) {
      if (isset($links[$id]['#item'])) {
        $element = $links[$id];
        $is_pending_menu_link = isset($element['#item']->link
          ->getMetaData()['entity_id']) && in_array($element['#item']->link
          ->getMetaData()['entity_id'], $pending_menu_link_ids);
        $form['links'][$id]['#item'] = $element['#item'];

        // TableDrag: Mark the table row as draggable.
        $form['links'][$id]['#attributes'] = $element['#attributes'];
        $form['links'][$id]['#attributes']['class'][] = 'draggable';
        if ($is_pending_menu_link) {
          $form['links'][$id]['#attributes']['class'][] = 'color-warning';
          $form['links'][$id]['#attributes']['class'][] = 'menu-link-content--pending-revision';
        }

        // TableDrag: Sort the table row according to its existing/configured weight.
        $form['links'][$id]['#weight'] = $element['#item']->link
          ->getWeight();

        // Add special classes to be used for tabledrag.js.
        $element['parent']['#attributes']['class'] = [
          'menu-parent',
        ];
        $element['weight']['#attributes']['class'] = [
          'menu-weight',
        ];
        $element['id']['#attributes']['class'] = [
          'menu-id',
        ];
        $form['links'][$id]['title'] = [
          [
            '#theme' => 'indentation',
            '#size' => $element['#item']->depth - 1,
          ],
          $element['title'],
        ];
        $form['links'][$id]['enabled'] = $element['enabled'];
        $form['links'][$id]['enabled']['#wrapper_attributes']['class'] = [
          'checkbox',
          'menu-enabled',
        ];

        // Disallow changing the publishing status of a pending revision.
        if ($is_pending_menu_link) {
          $form['links'][$id]['enabled']['#access'] = FALSE;
        }
        if (!$pending_menu_link_ids) {
          $form['links'][$id]['weight'] = $element['weight'];
        }

        // Operations (dropbutton) column.
        $form['links'][$id]['operations'] = $element['operations'];
        $form['links'][$id]['id'] = $element['id'];
        $form['links'][$id]['parent'] = $element['parent'];
      }
    }
    return $form;
  }

  /**
   * Recursive helper function for buildOverviewForm().
   *
   * @param \Drupal\Core\Menu\MenuLinkTreeElement[] $tree
   *   The tree retrieved by \Drupal\Core\Menu\MenuLinkTreeInterface::load().
   * @param int $delta
   *   The default number of menu items used in the menu weight selector is 50.
   *
   * @return array
   *   The overview tree form.
   */
  protected function buildOverviewTreeForm($tree, $delta) {
    $form =& $this->overviewTreeForm;
    $tree_access_cacheability = new CacheableMetadata();
    foreach ($tree as $element) {
      $tree_access_cacheability = $tree_access_cacheability
        ->merge(CacheableMetadata::createFromObject($element->access));

      // Only render accessible links.
      if (!$element->access
        ->isAllowed()) {
        continue;
      }

      /** @var \Drupal\Core\Menu\MenuLinkInterface $link */
      $link = $element->link;
      if ($link) {
        $id = 'menu_plugin_id:' . $link
          ->getPluginId();
        $form[$id]['#item'] = $element;
        $form[$id]['#attributes'] = $link
          ->isEnabled() ? [
          'class' => [
            'menu-enabled',
          ],
        ] : [
          'class' => [
            'menu-disabled',
          ],
        ];
        $form[$id]['title'] = Link::fromTextAndUrl($link
          ->getTitle(), $link
          ->getUrlObject())
          ->toRenderable();
        if (!$link
          ->isEnabled()) {
          $form[$id]['title']['#suffix'] = ' (' . $this
            ->t('disabled') . ')';
        }
        elseif ($id === 'menu_plugin_id:user.logout') {
          $form[$id]['title']['#suffix'] = ' (' . $this
            ->t('<q>Log in</q> for anonymous users') . ')';
        }
        elseif (($url = $link
          ->getUrlObject()) && $url
          ->isRouted() && $url
          ->getRouteName() == 'user.page') {
          $form[$id]['title']['#suffix'] = ' (' . $this
            ->t('logged in users only') . ')';
        }
        $form[$id]['enabled'] = [
          '#type' => 'checkbox',
          '#title' => $this
            ->t('Enable @title menu link', [
            '@title' => $link
              ->getTitle(),
          ]),
          '#title_display' => 'invisible',
          '#default_value' => $link
            ->isEnabled(),
        ];
        $form[$id]['weight'] = [
          '#type' => 'weight',
          '#delta' => $delta,
          '#default_value' => $link
            ->getWeight(),
          '#title' => $this
            ->t('Weight for @title', [
            '@title' => $link
              ->getTitle(),
          ]),
          '#title_display' => 'invisible',
        ];
        $form[$id]['id'] = [
          '#type' => 'hidden',
          '#value' => $link
            ->getPluginId(),
        ];
        $form[$id]['parent'] = [
          '#type' => 'hidden',
          '#default_value' => $link
            ->getParent(),
        ];

        // Build a list of operations.
        $operations = [];
        $operations['edit'] = [
          'title' => $this
            ->t('Edit'),
        ];

        // Allow for a custom edit link per plugin.
        $edit_route = $link
          ->getEditRoute();
        if ($edit_route) {
          $operations['edit']['url'] = $edit_route;

          // Bring the user back to the menu overview.
          $operations['edit']['query'] = $this
            ->getDestinationArray();
        }
        else {

          // Fall back to the standard edit link.
          $operations['edit'] += [
            'url' => Url::fromRoute('menu_ui.link_edit', [
              'menu_link_plugin' => $link
                ->getPluginId(),
            ]),
          ];
        }

        // Links can either be reset or deleted, not both.
        if ($link
          ->isResettable()) {
          $operations['reset'] = [
            'title' => $this
              ->t('Reset'),
            'url' => Url::fromRoute('menu_ui.link_reset', [
              'menu_link_plugin' => $link
                ->getPluginId(),
            ]),
          ];
        }
        elseif ($delete_link = $link
          ->getDeleteRoute()) {
          $operations['delete']['url'] = $delete_link;
          $operations['delete']['query'] = $this
            ->getDestinationArray();
          $operations['delete']['title'] = $this
            ->t('Delete');
        }
        if ($link
          ->isTranslatable()) {
          $operations['translate'] = [
            'title' => $this
              ->t('Translate'),
            'url' => $link
              ->getTranslateRoute(),
          ];
        }
        $form[$id]['operations'] = [
          '#type' => 'operations',
          '#links' => $operations,
        ];
      }
      if ($element->subtree) {
        $this
          ->buildOverviewTreeForm($element->subtree, $delta);
      }
    }
    $tree_access_cacheability
      ->merge(CacheableMetadata::createFromRenderArray($form))
      ->applyTo($form);
    return $form;
  }

  /**
   * Submit handler for the menu overview form.
   *
   * This function takes great care in saving parent items first, then items
   * underneath them. Saving items in the incorrect order can break the tree.
   */
  protected function submitOverviewForm(array $complete_form, FormStateInterface $form_state) {

    // Form API supports constructing and validating self-contained sections
    // within forms, but does not allow to handle the form section's submission
    // equally separated yet. Therefore, we use a $form_state key to point to
    // the parents of the form section.
    $parents = $form_state
      ->get('menu_overview_form_parents');
    $input = NestedArray::getValue($form_state
      ->getUserInput(), $parents);
    $form =& NestedArray::getValue($complete_form, $parents);

    // When dealing with saving menu items, the order in which these items are
    // saved is critical. If a changed child item is saved before its parent,
    // the child item could be saved with an invalid path past its immediate
    // parent. To prevent this, save items in the form in the same order they
    // are sent, ensuring parents are saved first, then their children.
    // See https://www.drupal.org/node/181126#comment-632270.
    $order = is_array($input) ? array_flip(array_keys($input)) : [];

    // Update our original form with the new order.
    $form = array_intersect_key(array_merge($order, $form), $form);
    $fields = [
      'weight',
      'parent',
      'enabled',
    ];
    $form_links = $form['links'];
    foreach (Element::children($form_links) as $id) {
      if (isset($form_links[$id]['#item'])) {
        $element = $form_links[$id];
        $updated_values = [];

        // Update any fields that have changed in this menu item.
        foreach ($fields as $field) {
          if (isset($element[$field]['#value']) && $element[$field]['#value'] != $element[$field]['#default_value']) {
            $updated_values[$field] = $element[$field]['#value'];
          }
        }
        if ($updated_values) {

          // Use the ID from the actual plugin instance since the hidden value
          // in the form could be tampered with.
          $this->menuLinkManager
            ->updateDefinition($element['#item']->link
            ->getPLuginId(), $updated_values);
        }
      }
    }
  }

}

Members

Name	Modifiers	Type	Description	Overrides
DependencySerializationTrait::$_entityStorages	protected	property
DependencySerializationTrait::$_serviceIds	protected	property
DependencySerializationTrait::__sleep	public	function		2
DependencySerializationTrait::__wakeup	public	function		2
EntityForm::$entity	protected	property	The entity being used by this form.	11
EntityForm::$entityTypeManager	protected	property	The entity type manager.	3
EntityForm::$moduleHandler	protected	property	The module handler service.
EntityForm::$operation	protected	property	The name of the current operation.
EntityForm::actions	protected	function	Returns an array of supported actions for the current entity form.	35
EntityForm::actionsElement	protected	function	Returns the action form element for the current entity form.
EntityForm::afterBuild	public	function	Form element #after_build callback: Updates the entity with submitted data.
EntityForm::buildEntity	public	function	Builds an updated entity object based upon the submitted form values. Overrides EntityFormInterface::buildEntity	3
EntityForm::buildForm	public	function	Form constructor. Overrides FormInterface::buildForm	13
EntityForm::copyFormValuesToEntity	protected	function	Copies top-level form values to entity properties.	9
EntityForm::getBaseFormId	public	function	Returns a string identifying the base form. Overrides BaseFormIdInterface::getBaseFormId	6
EntityForm::getEntity	public	function	Gets the form entity. Overrides EntityFormInterface::getEntity
EntityForm::getEntityFromRouteMatch	public	function	Determines which entity will be used by this form from a RouteMatch object. Overrides EntityFormInterface::getEntityFromRouteMatch	3
EntityForm::getFormId	public	function	Returns a unique string identifying the form. Overrides FormInterface::getFormId	12
EntityForm::getOperation	public	function	Gets the operation identifying the form. Overrides EntityFormInterface::getOperation
EntityForm::init	protected	function	Initialize the form state and the entity before the first form build.	3
EntityForm::prepareEntity	protected	function	Prepares the entity object before the form is built first.	3
EntityForm::prepareInvokeAll	protected	function	Invokes the specified prepare hook variant.
EntityForm::processForm	public	function	Process callback: assigns weights and hides extra fields.
EntityForm::setEntity	public	function	Sets the form entity. Overrides EntityFormInterface::setEntity
EntityForm::setEntityTypeManager	public	function	Sets the entity type manager for this form. Overrides EntityFormInterface::setEntityTypeManager
EntityForm::setModuleHandler	public	function	Sets the module handler for this form. Overrides EntityFormInterface::setModuleHandler
EntityForm::setOperation	public	function	Sets the operation for this form. Overrides EntityFormInterface::setOperation
FormBase::$configFactory	protected	property	The config factory.	3
FormBase::$requestStack	protected	property	The request stack.	1
FormBase::$routeMatch	protected	property	The route match.
FormBase::config	protected	function	Retrieves a configuration object.
FormBase::configFactory	protected	function	Gets the config factory for this form.	3
FormBase::container	private	function	Returns the service container.
FormBase::currentUser	protected	function	Gets the current user.
FormBase::getRequest	protected	function	Gets the request object.
FormBase::getRouteMatch	protected	function	Gets the route match.
FormBase::logger	protected	function	Gets the logger for a specific channel.
FormBase::redirect	protected	function	Returns a redirect response object for the specified route.
FormBase::resetConfigFactory	public	function	Resets the configuration factory.
FormBase::setConfigFactory	public	function	Sets the config factory for this form.
FormBase::setRequestStack	public	function	Sets the request stack object to use.
FormBase::validateForm	public	function	Form validation handler. Overrides FormInterface::validateForm	72
LoggerChannelTrait::$loggerFactory	protected	property	The logger channel factory service.
LoggerChannelTrait::getLogger	protected	function	Gets the logger for a specific channel.
LoggerChannelTrait::setLoggerFactory	public	function	Injects the logger channel factory.
MenuForm::$linkGenerator	protected	property	The link generator.
MenuForm::$menuLinkContentStorage	protected	property	The menu_link_content storage handler.
MenuForm::$menuLinkManager	protected	property	The menu link manager.
MenuForm::$menuTree	protected	property	The menu tree service.
MenuForm::$overviewTreeForm	protected	property	The overview tree form.
MenuForm::buildOverviewForm	protected	function	Form constructor to edit an entire menu tree at once.
MenuForm::buildOverviewTreeForm	protected	function	Recursive helper function for buildOverviewForm().
MenuForm::create	public static	function	Instantiates a new instance of this class. Overrides FormBase::create
MenuForm::form	public	function	Gets the actual form array to be built. Overrides EntityForm::form
MenuForm::menuNameExists	public	function	Returns whether a menu name already exists.
MenuForm::save	public	function	Form submission handler for the 'save' action. Overrides EntityForm::save
MenuForm::submitForm	public	function	This is the default entity object builder function. It is called before any other submit handler to build the new entity object to be used by the following submit handlers. At this point of the form workflow the entity is validated and the form state… Overrides EntityForm::submitForm
MenuForm::submitOverviewForm	protected	function	Submit handler for the menu overview form.
MenuForm::__construct	public	function	Constructs a MenuForm object.
MessengerTrait::$messenger	protected	property	The messenger.	27
MessengerTrait::messenger	public	function	Gets the messenger.	27
MessengerTrait::setMessenger	public	function	Sets the messenger.
RedirectDestinationTrait::$redirectDestination	protected	property	The redirect destination service.	1
RedirectDestinationTrait::getDestinationArray	protected	function	Prepares a 'destination' URL query parameter for use with \Drupal\Core\Url.
RedirectDestinationTrait::getRedirectDestination	protected	function	Returns the redirect destination service.
RedirectDestinationTrait::setRedirectDestination	public	function	Sets the redirect destination service.
StringTranslationTrait::$stringTranslation	protected	property	The string translation service.	4
StringTranslationTrait::formatPlural	protected	function	Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals	protected	function	Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation	protected	function	Gets the string translation service.
StringTranslationTrait::setStringTranslation	public	function	Sets the string translation service to use.	2
StringTranslationTrait::t	protected	function	Translates a string to the current language or to a given language.

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class MenuForm in Drupal 9

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