Feature: #97201 - PSR-14 Event for modifying new content element wizard items

See Issue #97201

Description

A new PSR-14 Event \TYPO3\CMS\Backend\Controller\Event\ModifyNewContentElementWizardItemsEvent has been introduced which serves as a more powerful and flexible alternative for the now removed hook $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['cms']['db_new_content_el']['wizardItemsHook'].

The event is called after TYPO3 has already prepared the wizard items, defined in TSconfig (mod.wizards.newContentElement.wizardItems).

The event allows listeners to modify any available wizard item as well as adding new ones. It’s therefore possible for the listeners to e.g. change the configuration, the position or to remove existing items altogether.

Following methods are available:

Method Parameters Description
getWizardItems()   Returns all available wizard items.
setWizardItems() $wizardItems Updates / overwrites the available wizard items
hasWizardItem $identifier Whether a wizard item with the $identifier exists.
getWizardItem() $identifier Returns the wizard item with the $identifier or NULL if it does not exist.
setWizardItem() $identifier $configuration $position Add a new wizard item with the identifier and the $configuration at the defined $position. $position is an array. Allowed values are before => <identifier> and after => <identifier>. Can also be used to modify or relocate existing items.
removeWizardItem() $identifier Removes a wizard item with the $identifier
getPageInfo()   Provides information about the current page making use of the wizard.
getColPos()   Provides information about the column position of the button that triggered the wizard.
getSysLanguage()   Provides information about the language used while triggering the wizard.
getUidPid()   Provides information about the element to position the new element after (uid) or into (pid).

Example

Registration of the Event in your extensions’ Services.yaml:

MyVendor\MyPackage\Frontend\MyEventListener:
  tags:
    - name: event.listener
      identifier: 'my-package/backend/modify-wizard-items'

The corresponding event listener class:

use TYPO3\CMS\Backend\Controller\Event\ModifyNewContentElementWizardItemsEvent;

class MyEventListener {

    public function __invoke(ModifyNewContentElementWizardItemsEvent $event): void
    {
        // Add a new wizard item after "textpic"
        $event->setWizardItem(
            'my_element',
            [
                'iconIdentifier' => 'icon-my-element',
                'title' => 'My element',
                'description' => 'My element description',
                'tt_content_defValues' => [
                    'CType' => 'my_element'
                ],
            ],
            ['after' => 'common_textpic']
        );
    }
}

Impact

The main advantages of the new PSR-14 Event are the object-orientated apporach as well as the built-in convenience features, like relocating of the wizard items.