class LinkWidget in Drupal 9

Same name and namespace in other branches

8 core/modules/link/src/Plugin/Field/FieldWidget/LinkWidget.php \Drupal\link\Plugin\Field\FieldWidget\LinkWidget

Plugin implementation of the 'link' widget.

Plugin annotation


@FieldWidget(
  id = "link_default",
  label = @Translation("Link"),
  field_types = {
    "link"
  }
)

Hierarchy

class \Drupal\Component\Plugin\PluginBase implements DerivativeInspectionInterface, PluginInspectionInterface
- class \Drupal\Core\Plugin\PluginBase uses DependencySerializationTrait, MessengerTrait, StringTranslationTrait
  - class \Drupal\Core\Field\PluginSettingsBase implements DependentPluginInterface, PluginSettingsInterface
    class \Drupal\Core\Field\WidgetBase implements WidgetInterface, ContainerFactoryPluginInterface
    class \Drupal\link\Plugin\Field\FieldWidget\LinkWidget

Expanded class hierarchy of LinkWidget

File

core/modules/link/src/Plugin/Field/FieldWidget/LinkWidget.php, line 25

Namespace

Drupal\link\Plugin\Field\FieldWidget

View source

class LinkWidget extends WidgetBase {

  /**
   * {@inheritdoc}
   */
  public static function defaultSettings() {
    return [
      'placeholder_url' => '',
      'placeholder_title' => '',
    ] + parent::defaultSettings();
  }

  /**
   * Gets the URI without the 'internal:' or 'entity:' scheme.
   *
   * The following two forms of URIs are transformed:
   * - 'entity:' URIs: to entity autocomplete ("label (entity id)") strings;
   * - 'internal:' URIs: the scheme is stripped.
   *
   * This method is the inverse of ::getUserEnteredStringAsUri().
   *
   * @param string $uri
   *   The URI to get the displayable string for.
   *
   * @return string
   *
   * @see static::getUserEnteredStringAsUri()
   */
  protected static function getUriAsDisplayableString($uri) {
    $scheme = parse_url($uri, PHP_URL_SCHEME);

    // By default, the displayable string is the URI.
    $displayable_string = $uri;

    // A different displayable string may be chosen in case of the 'internal:'
    // or 'entity:' built-in schemes.
    if ($scheme === 'internal') {
      $uri_reference = explode(':', $uri, 2)[1];

      // @todo '<front>' is valid input for BC reasons, may be removed by
      //   https://www.drupal.org/node/2421941
      $path = parse_url($uri, PHP_URL_PATH);
      if ($path === '/') {
        $uri_reference = '<front>' . substr($uri_reference, 1);
      }
      $displayable_string = $uri_reference;
    }
    elseif ($scheme === 'entity') {
      list($entity_type, $entity_id) = explode('/', substr($uri, 7), 2);

      // Show the 'entity:' URI as the entity autocomplete would.
      // @todo Support entity types other than 'node'. Will be fixed in
      //   https://www.drupal.org/node/2423093.
      if ($entity_type == 'node' && ($entity = \Drupal::entityTypeManager()
        ->getStorage($entity_type)
        ->load($entity_id))) {
        $displayable_string = EntityAutocomplete::getEntityLabels([
          $entity,
        ]);
      }
    }
    elseif ($scheme === 'route') {
      $displayable_string = ltrim($displayable_string, 'route:');
    }
    return $displayable_string;
  }

  /**
   * Gets the user-entered string as a URI.
   *
   * The following two forms of input are mapped to URIs:
   * - entity autocomplete ("label (entity id)") strings: to 'entity:' URIs;
   * - strings without a detectable scheme: to 'internal:' URIs.
   *
   * This method is the inverse of ::getUriAsDisplayableString().
   *
   * @param string $string
   *   The user-entered string.
   *
   * @return string
   *   The URI, if a non-empty $uri was passed.
   *
   * @see static::getUriAsDisplayableString()
   */
  protected static function getUserEnteredStringAsUri($string) {

    // By default, assume the entered string is a URI.
    $uri = trim($string);

    // Detect entity autocomplete string, map to 'entity:' URI.
    $entity_id = EntityAutocomplete::extractEntityIdFromAutocompleteInput($string);
    if ($entity_id !== NULL) {

      // @todo Support entity types other than 'node'. Will be fixed in
      //   https://www.drupal.org/node/2423093.
      $uri = 'entity:node/' . $entity_id;
    }
    elseif (in_array($string, [
      '<nolink>',
      '<none>',
      '<button>',
    ], TRUE)) {
      $uri = 'route:' . $string;
    }
    elseif (!empty($string) && parse_url($string, PHP_URL_SCHEME) === NULL) {

      // @todo '<front>' is valid input for BC reasons, may be removed by
      //   https://www.drupal.org/node/2421941
      // - '<front>' -> '/'
      // - '<front>#foo' -> '/#foo'
      if (strpos($string, '<front>') === 0) {
        $string = '/' . substr($string, strlen('<front>'));
      }
      $uri = 'internal:' . $string;
    }
    return $uri;
  }

  /**
   * Form element validation handler for the 'uri' element.
   *
   * Disallows saving inaccessible or untrusted URLs.
   */
  public static function validateUriElement($element, FormStateInterface $form_state, $form) {
    $uri = static::getUserEnteredStringAsUri($element['#value']);
    $form_state
      ->setValueForElement($element, $uri);

    // If getUserEnteredStringAsUri() mapped the entered value to an 'internal:'
    // URI , ensure the raw value begins with '/', '?' or '#'.
    // @todo '<front>' is valid input for BC reasons, may be removed by
    //   https://www.drupal.org/node/2421941
    if (parse_url($uri, PHP_URL_SCHEME) === 'internal' && !in_array($element['#value'][0], [
      '/',
      '?',
      '#',
    ], TRUE) && substr($element['#value'], 0, 7) !== '<front>') {
      $form_state
        ->setError($element, t('Manually entered paths should start with one of the following characters: / ? #'));
      return;
    }
  }

  /**
   * Form element validation handler for the 'title' element.
   *
   * Conditionally requires the link title if a URL value was filled in.
   */
  public static function validateTitleElement(&$element, FormStateInterface $form_state, $form) {
    if ($element['uri']['#value'] !== '' && $element['title']['#value'] === '') {

      // We expect the field name placeholder value to be wrapped in t() here,
      // so it won't be escaped again as it's already marked safe.
      $form_state
        ->setError($element['title'], t('@title field is required if there is @uri input.', [
        '@title' => $element['title']['#title'],
        '@uri' => $element['uri']['#title'],
      ]));
    }
  }

  /**
   * Form element validation handler for the 'title' element.
   *
   * Requires the URL value if a link title was filled in.
   */
  public static function validateTitleNoLink(&$element, FormStateInterface $form_state, $form) {
    if ($element['uri']['#value'] === '' && $element['title']['#value'] !== '') {
      $form_state
        ->setError($element['uri'], t('The @uri field is required when the @title field is specified.', [
        '@title' => $element['title']['#title'],
        '@uri' => $element['uri']['#title'],
      ]));
    }
  }

  /**
   * {@inheritdoc}
   */
  public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {

    /** @var \Drupal\link\LinkItemInterface $item */
    $item = $items[$delta];
    $element['uri'] = [
      '#type' => 'url',
      '#title' => $this
        ->t('URL'),
      '#placeholder' => $this
        ->getSetting('placeholder_url'),
      // The current field value could have been entered by a different user.
      // However, if it is inaccessible to the current user, do not display it
      // to them.
      '#default_value' => !$item
        ->isEmpty() && (\Drupal::currentUser()
        ->hasPermission('link to any page') || $item
        ->getUrl()
        ->access()) ? static::getUriAsDisplayableString($item->uri) : NULL,
      '#element_validate' => [
        [
          static::class,
          'validateUriElement',
        ],
      ],
      '#maxlength' => 2048,
      '#required' => $element['#required'],
      '#link_type' => $this
        ->getFieldSetting('link_type'),
    ];

    // If the field is configured to support internal links, it cannot use the
    // 'url' form element and we have to do the validation ourselves.
    if ($this
      ->supportsInternalLinks()) {
      $element['uri']['#type'] = 'entity_autocomplete';

      // @todo The user should be able to select an entity type. Will be fixed
      //   in https://www.drupal.org/node/2423093.
      $element['uri']['#target_type'] = 'node';

      // Disable autocompletion when the first character is '/', '#' or '?'.
      $element['uri']['#attributes']['data-autocomplete-first-character-blacklist'] = '/#?';

      // The link widget is doing its own processing in
      // static::getUriAsDisplayableString().
      $element['uri']['#process_default_value'] = FALSE;
    }

    // If the field is configured to allow only internal links, add a useful
    // element prefix and description.
    if (!$this
      ->supportsExternalLinks()) {
      $element['uri']['#field_prefix'] = rtrim(Url::fromRoute('<front>', [], [
        'absolute' => TRUE,
      ])
        ->toString(), '/');
      $element['uri']['#description'] = $this
        ->t('This must be an internal path such as %add-node. You can also start typing the title of a piece of content to select it. Enter %front to link to the front page. Enter %nolink to display link text only. Enter %button to display keyboard-accessible link text only.', [
        '%add-node' => '/node/add',
        '%front' => '<front>',
        '%nolink' => '<nolink>',
        '%button' => '<button>',
      ]);
    }
    elseif ($this
      ->supportsExternalLinks() && $this
      ->supportsInternalLinks()) {
      $element['uri']['#description'] = $this
        ->t('Start typing the title of a piece of content to select it. You can also enter an internal path such as %add-node or an external URL such as %url. Enter %front to link to the front page. Enter %nolink to display link text only. Enter %button to display keyboard-accessible link text only.', [
        '%front' => '<front>',
        '%add-node' => '/node/add',
        '%url' => 'http://example.com',
        '%nolink' => '<nolink>',
        '%button' => '<button>',
      ]);
    }
    elseif ($this
      ->supportsExternalLinks() && !$this
      ->supportsInternalLinks()) {
      $element['uri']['#description'] = $this
        ->t('This must be an external URL such as %url.', [
        '%url' => 'http://example.com',
      ]);
    }
    $element['title'] = [
      '#type' => 'textfield',
      '#title' => $this
        ->t('Link text'),
      '#placeholder' => $this
        ->getSetting('placeholder_title'),
      '#default_value' => isset($items[$delta]->title) ? $items[$delta]->title : NULL,
      '#maxlength' => 255,
      '#access' => $this
        ->getFieldSetting('title') != DRUPAL_DISABLED,
      '#required' => $this
        ->getFieldSetting('title') === DRUPAL_REQUIRED && $element['#required'],
    ];

    // Post-process the title field to make it conditionally required if URL is
    // non-empty. Omit the validation on the field edit form, since the field
    // settings cannot be saved otherwise.
    //
    // Validate that title field is filled out (regardless of uri) when it is a
    // required field.
    if (!$this
      ->isDefaultValueWidget($form_state) && $this
      ->getFieldSetting('title') === DRUPAL_REQUIRED) {
      $element['#element_validate'][] = [
        static::class,
        'validateTitleElement',
      ];
      $element['#element_validate'][] = [
        static::class,
        'validateTitleNoLink',
      ];
      if (!$element['title']['#required']) {

        // Make title required on the front-end when URI filled-in.
        $field_name = $this->fieldDefinition
          ->getName();
        $parents = $element['#field_parents'];
        $parents[] = $field_name;
        $selector = $root = array_shift($parents);
        if ($parents) {
          $selector = $root . '[' . implode('][', $parents) . ']';
        }
        $element['title']['#states']['required'] = [
          ':input[name="' . $selector . '[' . $delta . '][uri]"]' => [
            'filled' => TRUE,
          ],
        ];
      }
    }

    // Ensure that a URI is always entered when an optional title field is
    // submitted.
    if (!$this
      ->isDefaultValueWidget($form_state) && $this
      ->getFieldSetting('title') == DRUPAL_OPTIONAL) {
      $element['#element_validate'][] = [
        static::class,
        'validateTitleNoLink',
      ];
    }

    // Exposing the attributes array in the widget is left for alternate and more
    // advanced field widgets.
    $element['attributes'] = [
      '#type' => 'value',
      '#tree' => TRUE,
      '#value' => !empty($items[$delta]->options['attributes']) ? $items[$delta]->options['attributes'] : [],
      '#attributes' => [
        'class' => [
          'link-field-widget-attributes',
        ],
      ],
    ];

    // If cardinality is 1, ensure a proper label is output for the field.
    if ($this->fieldDefinition
      ->getFieldStorageDefinition()
      ->getCardinality() == 1) {

      // If the link title is disabled, use the field definition label as the
      // title of the 'uri' element.
      if ($this
        ->getFieldSetting('title') == DRUPAL_DISABLED) {
        $element['uri']['#title'] = $element['#title'];

        // By default the field description is added to the title field. Since
        // the title field is disabled, we add the description, if given, to the
        // uri element instead.
        if (!empty($element['#description'])) {
          if (empty($element['uri']['#description'])) {
            $element['uri']['#description'] = $element['#description'];
          }
          else {

            // If we have the description of the type of field together with
            // the user provided description, we want to make a distinction
            // between "core help text" and "user entered help text". To make
            // this distinction more clear, we put them in an unordered list.
            $element['uri']['#description'] = [
              '#theme' => 'item_list',
              '#items' => [
                // Assume the user-specified description has the most relevance,
                // so place it first.
                $element['#description'],
                $element['uri']['#description'],
              ],
            ];
          }
        }
      }
      else {
        $element += [
          '#type' => 'fieldset',
        ];
      }
    }
    return $element;
  }

  /**
   * Indicates enabled support for link to routes.
   *
   * @return bool
   *   Returns TRUE if the LinkItem field is configured to support links to
   *   routes, otherwise FALSE.
   */
  protected function supportsInternalLinks() {
    $link_type = $this
      ->getFieldSetting('link_type');
    return (bool) ($link_type & LinkItemInterface::LINK_INTERNAL);
  }

  /**
   * Indicates enabled support for link to external URLs.
   *
   * @return bool
   *   Returns TRUE if the LinkItem field is configured to support links to
   *   external URLs, otherwise FALSE.
   */
  protected function supportsExternalLinks() {
    $link_type = $this
      ->getFieldSetting('link_type');
    return (bool) ($link_type & LinkItemInterface::LINK_EXTERNAL);
  }

  /**
   * {@inheritdoc}
   */
  public function settingsForm(array $form, FormStateInterface $form_state) {
    $elements = parent::settingsForm($form, $form_state);
    $elements['placeholder_url'] = [
      '#type' => 'textfield',
      '#title' => $this
        ->t('Placeholder for URL'),
      '#default_value' => $this
        ->getSetting('placeholder_url'),
      '#description' => $this
        ->t('Text that will be shown inside the field until a value is entered. This hint is usually a sample value or a brief description of the expected format.'),
    ];
    $elements['placeholder_title'] = [
      '#type' => 'textfield',
      '#title' => $this
        ->t('Placeholder for link text'),
      '#default_value' => $this
        ->getSetting('placeholder_title'),
      '#description' => $this
        ->t('Text that will be shown inside the field until a value is entered. This hint is usually a sample value or a brief description of the expected format.'),
      '#states' => [
        'invisible' => [
          ':input[name="instance[settings][title]"]' => [
            'value' => DRUPAL_DISABLED,
          ],
        ],
      ],
    ];
    return $elements;
  }

  /**
   * {@inheritdoc}
   */
  public function settingsSummary() {
    $summary = [];
    $placeholder_title = $this
      ->getSetting('placeholder_title');
    $placeholder_url = $this
      ->getSetting('placeholder_url');
    if (empty($placeholder_title) && empty($placeholder_url)) {
      $summary[] = $this
        ->t('No placeholders');
    }
    else {
      if (!empty($placeholder_title)) {
        $summary[] = $this
          ->t('Title placeholder: @placeholder_title', [
          '@placeholder_title' => $placeholder_title,
        ]);
      }
      if (!empty($placeholder_url)) {
        $summary[] = $this
          ->t('URL placeholder: @placeholder_url', [
          '@placeholder_url' => $placeholder_url,
        ]);
      }
    }
    return $summary;
  }

  /**
   * {@inheritdoc}
   */
  public function massageFormValues(array $values, array $form, FormStateInterface $form_state) {
    foreach ($values as &$value) {
      $value['uri'] = static::getUserEnteredStringAsUri($value['uri']);
      $value += [
        'options' => [],
      ];
    }
    return $values;
  }

  /**
   * {@inheritdoc}
   *
   * Override the '%uri' message parameter, to ensure that 'internal:' URIs
   * show a validation error message that doesn't mention that scheme.
   */
  public function flagErrors(FieldItemListInterface $items, ConstraintViolationListInterface $violations, array $form, FormStateInterface $form_state) {

    /** @var \Symfony\Component\Validator\ConstraintViolationInterface $violation */
    foreach ($violations as $offset => $violation) {
      $parameters = $violation
        ->getParameters();
      if (isset($parameters['@uri'])) {
        $parameters['@uri'] = static::getUriAsDisplayableString($parameters['@uri']);
        $violations
          ->set($offset, new ConstraintViolation($this
          ->t($violation
          ->getMessageTemplate(), $parameters), $violation
          ->getMessageTemplate(), $parameters, $violation
          ->getRoot(), $violation
          ->getPropertyPath(), $violation
          ->getInvalidValue(), $violation
          ->getPlural(), $violation
          ->getCode()));
      }
    }
    parent::flagErrors($items, $violations, $form, $form_state);
  }

}

Members

Name	Modifiers	Type	Description	Overrides
DependencySerializationTrait::$_entityStorages	protected	property
DependencySerializationTrait::$_serviceIds	protected	property
DependencySerializationTrait::__sleep	public	function		2
DependencySerializationTrait::__wakeup	public	function		2
LinkWidget::defaultSettings	public static	function	Defines the default settings for this plugin. Overrides PluginSettingsBase::defaultSettings
LinkWidget::flagErrors	public	function	Override the '%uri' message parameter, to ensure that 'internal:' URIs show a validation error message that doesn't mention that scheme. Overrides WidgetBase::flagErrors
LinkWidget::formElement	public	function	Returns the form for a single field widget. Overrides WidgetInterface::formElement
LinkWidget::getUriAsDisplayableString	protected static	function	Gets the URI without the 'internal:' or 'entity:' scheme.
LinkWidget::getUserEnteredStringAsUri	protected static	function	Gets the user-entered string as a URI.
LinkWidget::massageFormValues	public	function	Massages the form values into the format expected for field values. Overrides WidgetBase::massageFormValues
LinkWidget::settingsForm	public	function	Returns a form to configure settings for the widget. Overrides WidgetBase::settingsForm
LinkWidget::settingsSummary	public	function	Returns a short summary for the current widget settings. Overrides WidgetBase::settingsSummary
LinkWidget::supportsExternalLinks	protected	function	Indicates enabled support for link to external URLs.
LinkWidget::supportsInternalLinks	protected	function	Indicates enabled support for link to routes.
LinkWidget::validateTitleElement	public static	function	Form element validation handler for the 'title' element.
LinkWidget::validateTitleNoLink	public static	function	Form element validation handler for the 'title' element.
LinkWidget::validateUriElement	public static	function	Form element validation handler for the 'uri' element.
MessengerTrait::$messenger	protected	property	The messenger.	27
MessengerTrait::messenger	public	function	Gets the messenger.	27
MessengerTrait::setMessenger	public	function	Sets the messenger.
PluginBase::$configuration	protected	property	Configuration information passed into the plugin.	1
PluginBase::$pluginDefinition	protected	property	The plugin implementation definition.	1
PluginBase::$pluginId	protected	property	The plugin_id.
PluginBase::DERIVATIVE_SEPARATOR		constant	A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::getBaseId	public	function	Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface::getBaseId
PluginBase::getDerivativeId	public	function	Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface::getDerivativeId
PluginBase::getPluginDefinition	public	function	Gets the definition of the plugin implementation. Overrides PluginInspectionInterface::getPluginDefinition	2
PluginBase::getPluginId	public	function	Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::isConfigurable	public	function	Determines if the plugin is configurable.
PluginSettingsBase::$defaultSettingsMerged	protected	property	Whether default settings have been merged into the current $settings.
PluginSettingsBase::$thirdPartySettings	protected	property	The plugin settings injected by third party modules.
PluginSettingsBase::calculateDependencies	public	function	Calculates dependencies for the configured plugin. Overrides DependentPluginInterface::calculateDependencies	6
PluginSettingsBase::getSetting	public	function	Returns the value of a setting, or its default value if absent. Overrides PluginSettingsInterface::getSetting
PluginSettingsBase::getSettings	public	function	Returns the array of settings, including defaults for missing settings. Overrides PluginSettingsInterface::getSettings
PluginSettingsBase::getThirdPartyProviders	public	function	Gets the list of third parties that store information. Overrides ThirdPartySettingsInterface::getThirdPartyProviders
PluginSettingsBase::getThirdPartySetting	public	function	Gets the value of a third-party setting. Overrides ThirdPartySettingsInterface::getThirdPartySetting
PluginSettingsBase::getThirdPartySettings	public	function	Gets all third-party settings of a given module. Overrides ThirdPartySettingsInterface::getThirdPartySettings
PluginSettingsBase::mergeDefaults	protected	function	Merges default settings values into $settings.
PluginSettingsBase::onDependencyRemoval	public	function	Informs the plugin that some configuration it depends on will be deleted. Overrides PluginSettingsInterface::onDependencyRemoval	3
PluginSettingsBase::setSetting	public	function	Sets the value of a setting for the plugin. Overrides PluginSettingsInterface::setSetting
PluginSettingsBase::setSettings	public	function	Sets the settings for the plugin. Overrides PluginSettingsInterface::setSettings
PluginSettingsBase::setThirdPartySetting	public	function	Sets the value of a third-party setting. Overrides ThirdPartySettingsInterface::setThirdPartySetting
PluginSettingsBase::unsetThirdPartySetting	public	function	Unsets a third-party setting. Overrides ThirdPartySettingsInterface::unsetThirdPartySetting
StringTranslationTrait::$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.
WidgetBase::$fieldDefinition	protected	property	The field definition.
WidgetBase::$settings	protected	property	The widget settings. Overrides PluginSettingsBase::$settings
WidgetBase::addMoreAjax	public static	function	Ajax callback for the "Add another item" button.
WidgetBase::addMoreSubmit	public static	function	Submission handler for the "Add another item" button.
WidgetBase::afterBuild	public static	function	After-build handler for field elements in a form.
WidgetBase::create	public static	function	Creates an instance of the plugin. Overrides ContainerFactoryPluginInterface::create	5
WidgetBase::errorElement	public	function	Assigns a field-level validation error to the right widget sub-element. Overrides WidgetInterface::errorElement	8
WidgetBase::extractFormValues	public	function	Extracts field values from submitted form values. Overrides WidgetBaseInterface::extractFormValues	2
WidgetBase::form	public	function	Creates a form element for a field. Overrides WidgetBaseInterface::form	3
WidgetBase::formMultipleElements	protected	function	Special handling to create form elements for multiple values.	1
WidgetBase::formSingleElement	protected	function	Generates the form element for a single copy of the widget.
WidgetBase::getFieldSetting	protected	function	Returns the value of a field setting.
WidgetBase::getFieldSettings	protected	function	Returns the array of field settings.
WidgetBase::getFilteredDescription	protected	function	Returns the filtered field description.
WidgetBase::getWidgetState	public static	function	Retrieves processing information about the widget from $form_state. Overrides WidgetBaseInterface::getWidgetState
WidgetBase::getWidgetStateParents	protected static	function	Returns the location of processing information within $form_state.
WidgetBase::handlesMultipleValues	protected	function	Returns whether the widget handles multiple values.
WidgetBase::isApplicable	public static	function	Returns if the widget can be used for the provided field. Overrides WidgetInterface::isApplicable	4
WidgetBase::isDefaultValueWidget	protected	function	Returns whether the widget used for default value form.
WidgetBase::setWidgetState	public static	function	Stores processing information about the widget in $form_state. Overrides WidgetBaseInterface::setWidgetState
WidgetBase::__construct	public	function	Constructs a WidgetBase object. Overrides PluginBase::__construct	5

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class LinkWidget in Drupal 9

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