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class EntityBrowser in Entity Browser 8.2

Same name in this branch
  1. 8.2 src/Entity/EntityBrowser.php \Drupal\entity_browser\Entity\EntityBrowser
  2. 8.2 src/Plugin/views/display/EntityBrowser.php \Drupal\entity_browser\Plugin\views\display\EntityBrowser
Same name and namespace in other branches
  1. 8 src/Plugin/views/display/EntityBrowser.php \Drupal\entity_browser\Plugin\views\display\EntityBrowser

The plugin that handles entity browser display.

"entity_browser_display" is a custom property, used with \Drupal\views\Views::getApplicableViews() to retrieve all views with a 'Entity Browser' display.

Plugin annotation


@ViewsDisplay(
  id = "entity_browser",
  title = @Translation("Entity browser"),
  help = @Translation("Displays a view as Entity browser widget."),
  theme = "views_view",
  admin = @Translation("Entity browser"),
  entity_browser_display = TRUE
)

Hierarchy

Expanded class hierarchy of EntityBrowser

File

src/Plugin/views/display/EntityBrowser.php, line 27

Namespace

Drupal\entity_browser\Plugin\views\display
View source 
class EntityBrowser extends DisplayPluginBase implements TrustedCallbackInterface {

  /**
   * {@inheritdoc}
   */
  public function execute() {
    parent::execute();
    $render = [
      'view' => $this->view
        ->render(),
    ];
    $this
      ->handleForm($render);
    return $render;
  }

  /**
   * {@inheritdoc}
   */
  public function ajaxEnabled() {

    // Force AJAX as this Display Plugin will almost always be embedded inside
    // EntityBrowserForm, which breaks normal exposed form submits.
    return TRUE;
  }

  /**
   * {@inheritdoc}
   */
  public function getOption($option) {

    // @todo remove upon resolution of https://www.drupal.org/node/2904798
    // This overrides getOption() instead of ajaxEnabled() because
    // \Drupal\views\Controller\ViewAjaxController::ajaxView() currently calls
    // that directly.
    if ($option == 'use_ajax') {
      return TRUE;
    }
    else {
      return parent::getOption($option);
    }
  }

  /**
   * {@inheritdoc}
   */
  protected function defineOptions() {
    $options = parent::defineOptions();
    $options['use_ajax']['default'] = TRUE;
    return $options;
  }

  /**
   * {@inheritdoc}
   */
  public function optionsSummary(&$categories, &$options) {
    parent::optionsSummary($categories, $options);
    if (isset($options['use_ajax'])) {
      $options['use_ajax']['value'] = $this
        ->t('Yes (Forced)');
    }
  }

  /**
   * {@inheritdoc}
   */
  public function buildOptionsForm(&$form, FormStateInterface $form_state) {
    parent::buildOptionsForm($form, $form_state);

    // Disable the ability to toggle AJAX support, as we forcibly enable AJAX
    // in our ajaxEnabled() implementation.
    if (isset($form['use_ajax'])) {
      $form['use_ajax'] = [
        '#description' => $this
          ->t('Entity Browser requires Views to use AJAX.'),
        '#type' => 'checkbox',
        '#title' => $this
          ->t('Use AJAX'),
        '#default_value' => 1,
        '#disabled' => TRUE,
      ];
    }
  }

  /**
   * {@inheritdoc}
   */
  public function preview() {
    return $this
      ->execute();
  }

  /**
   * {@inheritdoc}
   *
   * Pre render callback for a view.
   *
   * Based on DisplayPluginBase::elementPreRender() except that we removed form
   * part which need to handle by our own.
   */
  public function elementPreRender(array $element) {
    $view = $element['#view'];
    $empty = empty($view->result);

    // Force a render array so CSS/JS can be attached.
    if (!is_array($element['#rows'])) {
      $element['#rows'] = [
        '#markup' => $element['#rows'],
      ];
    }
    $element['#header'] = $view->display_handler
      ->renderArea('header', $empty);
    $element['#footer'] = $view->display_handler
      ->renderArea('footer', $empty);
    $element['#empty'] = $empty ? $view->display_handler
      ->renderArea('empty', $empty) : [];
    $element['#exposed'] = !empty($view->exposed_widgets) ? $view->exposed_widgets : [];
    $element['#more'] = $view->display_handler
      ->renderMoreLink();
    $element['#feed_icons'] = !empty($view->feedIcons) ? $view->feedIcons : [];
    if ($view->display_handler
      ->renderPager()) {
      $exposed_input = isset($view->exposed_raw_input) ? $view->exposed_raw_input : NULL;
      $element['#pager'] = $view
        ->renderPager($exposed_input);
    }
    if (!empty($view->attachment_before)) {
      $element['#attachment_before'] = $view->attachment_before;
    }
    if (!empty($view->attachment_after)) {
      $element['#attachment_after'] = $view->attachment_after;
    }
    return $element;
  }

  /**
   * Handles form elements on a view.
   *
   * @param array $render
   *   Rendered content.
   */
  protected function handleForm(array &$render) {
    if (!empty($this->view->field['entity_browser_select'])) {

      /** @var \Drupal\entity_browser\Plugin\views\field\SelectForm $select */
      $select = $this->view->field['entity_browser_select'];
      $select
        ->viewsForm($render);
      $render['#post_render'][] = [
        get_class($this),
        'postRender',
      ];
      $substitutions = [];
      foreach ($this->view->result as $row) {
        $form_element_row_id = $select
          ->getRowId($row);
        $substitutions[] = [
          'placeholder' => '<!--form-item-entity_browser_select--' . $form_element_row_id . '-->',
          'field_name' => 'entity_browser_select',
          'row_id' => $form_element_row_id,
        ];
      }
      $render['#substitutions'] = [
        '#type' => 'value',
        '#value' => $substitutions,
      ];
    }
  }

  /**
   * Post render callback that moves form elements into the view.
   *
   * Form elements need to be added out of view to be correctly detected by Form
   * API and then added into the view afterwards. Views use the same approach
   * for bulk operations.
   *
   * @param string $content
   *   Rendered content.
   * @param array $element
   *   Render array.
   *
   * @return string
   *   Rendered content.
   */
  public static function postRender($content, array $element) {

    // Placeholders and their substitutions (usually rendered form elements).
    $search = $replace = [];

    // Add in substitutions provided by the form.
    foreach ($element['#substitutions']['#value'] as $substitution) {
      $field_name = $substitution['field_name'];
      $row_id = $substitution['row_id'];
      $search[] = $substitution['placeholder'];
      $replace[] = isset($element[$field_name][$row_id]) ? \Drupal::service('renderer')
        ->render($element[$field_name][$row_id]) : '';
    }

    // Add in substitutions from hook_views_form_substitutions().
    $substitutions = \Drupal::moduleHandler()
      ->invokeAll('views_form_substitutions');
    foreach ($substitutions as $placeholder => $substitution) {
      $search[] = $placeholder;
      $replace[] = $substitution;
    }

    // We cannot render exposed form within the View, as nested forms are not
    // standard and will break entity selection.
    $search[] = '<form';
    $replace[] = '<div';
    $search[] = '</form>';
    $replace[] = '</div>';
    $content = str_replace($search, $replace, $content);
    return $content;
  }

  /**
   * {@inheritdoc}
   */
  public static function trustedCallbacks() {
    return [
      'preRenderAddFieldsetMarkup',
      'postRender',
      'elementPreRender',
    ];
  }

}

Members

Namesort descending Modifiers Type Description Overrides
DependencySerializationTrait::$_entityStorages protected property An array of entity type IDs keyed by the property name of their storages.
DependencySerializationTrait::$_serviceIds protected property An array of service IDs keyed by property name used for serialization.
DependencySerializationTrait::__sleep public function 1
DependencySerializationTrait::__wakeup public function 2
DependencyTrait::$dependencies protected property The object's dependencies.
DependencyTrait::addDependencies protected function Adds multiple dependencies.
DependencyTrait::addDependency protected function Adds a dependency.
DisplayPluginBase::$display public property The display information coming directly from the view entity.
DisplayPluginBase::$extenders protected property Stores all available display extenders.
DisplayPluginBase::$handlers public property An array of instantiated handlers used in this display.
DisplayPluginBase::$output public property Stores the rendered output of the display.
DisplayPluginBase::$plugins protected property An array of instantiated plugins used in this display.
DisplayPluginBase::$unpackOptions protected static property Static cache for unpackOptions, but not if we are in the UI.
DisplayPluginBase::$usesAJAX protected property Whether the display allows the use of AJAX or not. 2
DisplayPluginBase::$usesAreas protected property Whether the display allows area plugins. 2
DisplayPluginBase::$usesAttachments protected property Whether the display allows attachments. 6
DisplayPluginBase::$usesMore protected property Whether the display allows the use of a 'more' link or not. 1
DisplayPluginBase::$usesOptions protected property Denotes whether the plugin has an additional options form. Overrides PluginBase::$usesOptions 1
DisplayPluginBase::$usesPager protected property Whether the display allows the use of a pager or not. 4
DisplayPluginBase::$view public property The top object of a view. Overrides PluginBase::$view
DisplayPluginBase::acceptAttachments public function Determines whether this display can use attachments. Overrides DisplayPluginInterface::acceptAttachments
DisplayPluginBase::access public function Determines if the user has access to this display of the view. Overrides DisplayPluginInterface::access
DisplayPluginBase::applyDisplayCachablityMetadata Deprecated protected function Applies the cacheability of the current display to the given render array.
DisplayPluginBase::applyDisplayCacheabilityMetadata protected function Applies the cacheability of the current display to the given render array.
DisplayPluginBase::attachTo public function Allows displays to attach to other views. Overrides DisplayPluginInterface::attachTo 2
DisplayPluginBase::buildBasicRenderable public static function Builds a basic render array which can be properly render cached. Overrides DisplayPluginInterface::buildBasicRenderable 1
DisplayPluginBase::buildRenderable public function Builds a renderable array of the view. Overrides DisplayPluginInterface::buildRenderable 1
DisplayPluginBase::buildRenderingLanguageOptions protected function Returns the available rendering strategies for language-aware entities.
DisplayPluginBase::calculateCacheMetadata public function Calculates the display's cache metadata by inspecting each handler/plugin. Overrides DisplayPluginInterface::calculateCacheMetadata
DisplayPluginBase::calculateDependencies public function Calculates dependencies for the configured plugin. Overrides PluginBase::calculateDependencies 3
DisplayPluginBase::defaultableSections public function Lists the 'defaultable' sections and what items each section contains. Overrides DisplayPluginInterface::defaultableSections 1
DisplayPluginBase::destroy public function Clears a plugin. Overrides PluginBase::destroy
DisplayPluginBase::displaysExposed public function Determines if this display should display the exposed filters widgets. Overrides DisplayPluginInterface::displaysExposed 2
DisplayPluginBase::getAllHandlers protected function Gets all the handlers used by the display.
DisplayPluginBase::getAllPlugins protected function Gets all the plugins used by the display.
DisplayPluginBase::getArgumentsTokens public function Returns to tokens for arguments. Overrides DisplayPluginInterface::getArgumentsTokens
DisplayPluginBase::getArgumentText public function Provides help text for the arguments. Overrides DisplayPluginInterface::getArgumentText 1
DisplayPluginBase::getAttachedDisplays public function Find out all displays which are attached to this display. Overrides DisplayPluginInterface::getAttachedDisplays
DisplayPluginBase::getCacheMetadata public function Gets the cache metadata. Overrides DisplayPluginInterface::getCacheMetadata
DisplayPluginBase::getExtenders public function Gets the display extenders. Overrides DisplayPluginInterface::getExtenders
DisplayPluginBase::getFieldLabels public function Retrieves a list of fields for the current display. Overrides DisplayPluginInterface::getFieldLabels
DisplayPluginBase::getHandler public function Get the handler object for a single handler. Overrides DisplayPluginInterface::getHandler
DisplayPluginBase::getHandlers public function Get a full array of handlers for $type. This caches them. Overrides DisplayPluginInterface::getHandlers
DisplayPluginBase::getLinkDisplay public function Returns the ID of the display to use when making links. Overrides DisplayPluginInterface::getLinkDisplay
DisplayPluginBase::getMoreUrl protected function Get the more URL for this view.
DisplayPluginBase::getPagerText public function Provides help text for pagers. Overrides DisplayPluginInterface::getPagerText 1
DisplayPluginBase::getPath public function Returns the base path to use for this display. Overrides DisplayPluginInterface::getPath 1
DisplayPluginBase::getPlugin public function Get the instance of a plugin, for example style or row. Overrides DisplayPluginInterface::getPlugin
DisplayPluginBase::getRoutedDisplay public function Points to the display which can be linked by this display. Overrides DisplayPluginInterface::getRoutedDisplay
DisplayPluginBase::getSpecialBlocks public function Provides the block system with any exposed widget blocks for this display. Overrides DisplayPluginInterface::getSpecialBlocks
DisplayPluginBase::getType public function Returns the display type that this display requires. Overrides DisplayPluginInterface::getType 4
DisplayPluginBase::getUrl public function Returns a URL to $this display or its configured linked display. Overrides DisplayPluginInterface::getUrl
DisplayPluginBase::hasPath public function Checks to see if the display has a 'path' field. Overrides DisplayPluginInterface::hasPath 1
DisplayPluginBase::initDisplay public function Initializes the display plugin. Overrides DisplayPluginInterface::initDisplay 1
DisplayPluginBase::isBaseTableTranslatable protected function Returns whether the base table is of a translatable entity type.
DisplayPluginBase::isDefaultDisplay public function Determines if this display is the 'default' display. Overrides DisplayPluginInterface::isDefaultDisplay 1
DisplayPluginBase::isDefaulted public function Determines if an option is set to use the default or current display. Overrides DisplayPluginInterface::isDefaulted
DisplayPluginBase::isEnabled public function Whether the display is enabled. Overrides DisplayPluginInterface::isEnabled
DisplayPluginBase::isIdentifierUnique public function Checks if the provided identifier is unique. Overrides DisplayPluginInterface::isIdentifierUnique
DisplayPluginBase::isMoreEnabled public function Whether the display is using the 'more' link or not. Overrides DisplayPluginInterface::isMoreEnabled
DisplayPluginBase::isPagerEnabled public function Whether the display is using a pager or not. Overrides DisplayPluginInterface::isPagerEnabled
DisplayPluginBase::mergeDefaults public function Merges default values for all plugin types. Overrides DisplayPluginInterface::mergeDefaults
DisplayPluginBase::mergeHandler protected function Merges handlers default values.
DisplayPluginBase::mergePlugin protected function Merges plugins default values.
DisplayPluginBase::newDisplay public function Reacts on adding a display. Overrides DisplayPluginInterface::newDisplay 1
DisplayPluginBase::optionLink public function Returns a link to a section of a form. Overrides DisplayPluginInterface::optionLink
DisplayPluginBase::optionsOverride public function If override/revert was clicked, perform the proper toggle. Overrides DisplayPluginInterface::optionsOverride
DisplayPluginBase::outputIsEmpty public function Is the output of the view empty. Overrides DisplayPluginInterface::outputIsEmpty
DisplayPluginBase::overrideOption public function Set an option and force it to be an override. Overrides DisplayPluginInterface::overrideOption
DisplayPluginBase::preExecute public function Sets up any variables on the view prior to execution. Overrides DisplayPluginInterface::preExecute
DisplayPluginBase::query public function Add anything to the query that we might need to. Overrides PluginBase::query 1
DisplayPluginBase::remove public function Reacts on deleting a display. Overrides DisplayPluginInterface::remove 2
DisplayPluginBase::render public function Renders this display. Overrides DisplayPluginInterface::render 3
DisplayPluginBase::renderArea public function Renders one of the available areas. Overrides DisplayPluginInterface::renderArea
DisplayPluginBase::renderFilters public function Does nothing (obsolete function). Overrides DisplayPluginInterface::renderFilters
DisplayPluginBase::renderMoreLink public function Renders the 'more' link. Overrides DisplayPluginInterface::renderMoreLink
DisplayPluginBase::renderPager public function Checks to see if the display plugins support pager rendering. Overrides DisplayPluginInterface::renderPager 1
DisplayPluginBase::setOption public function Sets an option, on this display or the default display. Overrides DisplayPluginInterface::setOption
DisplayPluginBase::setOverride public function Flip the override setting for the given section. Overrides DisplayPluginInterface::setOverride
DisplayPluginBase::submitOptionsForm public function Handle any special handling on the validate form. Overrides PluginBase::submitOptionsForm 4
DisplayPluginBase::useGroupBy public function Does the display have groupby enabled? Overrides DisplayPluginInterface::useGroupBy
DisplayPluginBase::useMoreAlways public function Should the enabled display more link be shown when no more items? Overrides DisplayPluginInterface::useMoreAlways
DisplayPluginBase::useMoreText public function Does the display have custom link text? Overrides DisplayPluginInterface::useMoreText
DisplayPluginBase::usesAJAX public function Whether the display allows the use of AJAX or not. Overrides DisplayPluginInterface::usesAJAX 2
DisplayPluginBase::usesAreas public function Returns whether the display can use areas. Overrides DisplayPluginInterface::usesAreas 2
DisplayPluginBase::usesAttachments public function Returns whether the display can use attachments. Overrides DisplayPluginInterface::usesAttachments 6
DisplayPluginBase::usesExposed public function Determines if this display uses exposed filters. Overrides DisplayPluginInterface::usesExposed 4
DisplayPluginBase::usesExposedFormInBlock public function Checks to see if the display can put the exposed form in a block. Overrides DisplayPluginInterface::usesExposedFormInBlock
DisplayPluginBase::usesFields public function Determines if the display's style uses fields. Overrides DisplayPluginInterface::usesFields
DisplayPluginBase::usesLinkDisplay public function Checks to see if the display has some need to link to another display. Overrides DisplayPluginInterface::usesLinkDisplay 1
DisplayPluginBase::usesMore public function Whether the display allows the use of a 'more' link or not. Overrides DisplayPluginInterface::usesMore 1
DisplayPluginBase::usesPager public function Whether the display allows the use of a pager or not. Overrides DisplayPluginInterface::usesPager 4
DisplayPluginBase::validate public function Validate that the plugin is correct and can be saved. Overrides PluginBase::validate 3
DisplayPluginBase::validateOptionsForm public function Validate the options form. Overrides PluginBase::validateOptionsForm 2
DisplayPluginBase::viewExposedFormBlocks public function Renders the exposed form as block. Overrides DisplayPluginInterface::viewExposedFormBlocks
DisplayPluginBase::__construct public function Constructs a new DisplayPluginBase object. Overrides PluginBase::__construct 3
EntityBrowser::ajaxEnabled public function Whether the display is actually using AJAX or not. Overrides DisplayPluginBase::ajaxEnabled
EntityBrowser::buildOptionsForm public function Provide a form to edit options for this plugin. Overrides DisplayPluginBase::buildOptionsForm
EntityBrowser::defineOptions protected function Information about options for all kinds of purposes will be held here. Overrides DisplayPluginBase::defineOptions
EntityBrowser::elementPreRender public function Pre render callback for a view. Overrides DisplayPluginBase::elementPreRender
EntityBrowser::execute public function Executes the view and returns data in the format required. Overrides DisplayPluginBase::execute
EntityBrowser::getOption public function Gets an option, from this display or the default display. Overrides DisplayPluginBase::getOption
EntityBrowser::handleForm protected function Handles form elements on a view.
EntityBrowser::optionsSummary public function Provides the default summary for options in the views UI. Overrides DisplayPluginBase::optionsSummary
EntityBrowser::postRender public static function Post render callback that moves form elements into the view.
EntityBrowser::preview public function Renders the display for the purposes of a live preview. Overrides DisplayPluginBase::preview
EntityBrowser::trustedCallbacks public static function Lists the trusted callbacks provided by the implementing class. Overrides DisplayPluginBase::trustedCallbacks
MessengerTrait::$messenger protected property The messenger. 29
MessengerTrait::messenger public function Gets the messenger. 29
MessengerTrait::setMessenger public function Sets the messenger.
PluginBase::$configuration protected property Configuration information passed into the plugin. 1
PluginBase::$definition public property Plugins's definition
PluginBase::$displayHandler public property The display object this plugin is for.
PluginBase::$options public property Options for this plugin will be held here.
PluginBase::$pluginDefinition protected property The plugin implementation definition. 1
PluginBase::$pluginId protected property The plugin_id.
PluginBase::$renderer protected property Stores the render API renderer. 3
PluginBase::create public static function Creates an instance of the plugin. Overrides ContainerFactoryPluginInterface::create 62
PluginBase::DERIVATIVE_SEPARATOR constant A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::doFilterByDefinedOptions protected function Do the work to filter out stored options depending on the defined options.
PluginBase::filterByDefinedOptions public function Filter out stored options depending on the defined options. Overrides ViewsPluginInterface::filterByDefinedOptions
PluginBase::getAvailableGlobalTokens public function Returns an array of available token replacements. Overrides ViewsPluginInterface::getAvailableGlobalTokens
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 3
PluginBase::getPluginId public function Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::getProvider public function Returns the plugin provider. Overrides ViewsPluginInterface::getProvider
PluginBase::getRenderer protected function Returns the render API renderer. 1
PluginBase::globalTokenForm public function Adds elements for available core tokens to a form. Overrides ViewsPluginInterface::globalTokenForm
PluginBase::globalTokenReplace public function Returns a string with any core tokens replaced. Overrides ViewsPluginInterface::globalTokenReplace
PluginBase::INCLUDE_ENTITY constant Include entity row languages when listing languages.
PluginBase::INCLUDE_NEGOTIATED constant Include negotiated languages when listing languages.
PluginBase::init public function Initialize the plugin. Overrides ViewsPluginInterface::init 8
PluginBase::isConfigurable public function Determines if the plugin is configurable.
PluginBase::listLanguages protected function Makes an array of languages, optionally including special languages.
PluginBase::pluginTitle public function Return the human readable name of the display. Overrides ViewsPluginInterface::pluginTitle
PluginBase::preRenderAddFieldsetMarkup public static function Moves form elements into fieldsets for presentation purposes. Overrides ViewsPluginInterface::preRenderAddFieldsetMarkup
PluginBase::preRenderFlattenData public static function Flattens the structure of form elements. Overrides ViewsPluginInterface::preRenderFlattenData
PluginBase::queryLanguageSubstitutions public static function Returns substitutions for Views queries for languages.
PluginBase::setOptionDefaults protected function Fills up the options of the plugin with defaults.
PluginBase::summaryTitle public function Returns the summary of the settings in the display. Overrides ViewsPluginInterface::summaryTitle 6
PluginBase::themeFunctions public function Provide a full list of possible theme templates used by this style. Overrides ViewsPluginInterface::themeFunctions 1
PluginBase::unpackOptions public function Unpack options over our existing defaults, drilling down into arrays so that defaults don't get totally blown away. Overrides ViewsPluginInterface::unpackOptions
PluginBase::usesOptions public function Returns the usesOptions property. Overrides ViewsPluginInterface::usesOptions 8
PluginBase::viewsTokenReplace protected function Replaces Views' tokens in a given string. The resulting string will be sanitized with Xss::filterAdmin. 1
PluginBase::VIEWS_QUERY_LANGUAGE_SITE_DEFAULT constant Query string to indicate the site default language.
PluginDependencyTrait::calculatePluginDependencies protected function Calculates and adds dependencies of a specific plugin instance. 1
PluginDependencyTrait::getPluginDependencies protected function Calculates and returns dependencies of a specific plugin instance.
PluginDependencyTrait::moduleHandler protected function Wraps the module handler. 1
PluginDependencyTrait::themeHandler protected function Wraps the theme handler. 1
StringTranslationTrait::$stringTranslation protected property The string translation service. 1
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.
TrustedCallbackInterface::THROW_EXCEPTION constant Untrusted callbacks throw exceptions.
TrustedCallbackInterface::TRIGGER_SILENCED_DEPRECATION constant Untrusted callbacks trigger silenced E_USER_DEPRECATION errors.
TrustedCallbackInterface::TRIGGER_WARNING constant Untrusted callbacks trigger E_USER_WARNING errors.