Feature: #97230 - PSR-14 event for modifying image manipulation preview URL

Description

A new PSR-14 event \TYPO3\CMS\Backend\Form\Event\ModifyImageManipulationPreviewUrlEvent has been introduced which serves as a direct replacement for the now removed $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['Backend/Form/Element/ImageManipulationElement']['previewUrl'] hook.

It can be used to modify the preview URL within the image manipulation element, used e.g. for the crop field of the sys_file_reference table.

As soon as a preview URL is set, the image manipulation element will display a corresponding button in the footer of the modal window, next to the Cancel and Accept buttons. On click, the preview URL will be opened in a new window.

Next to the getPreviewUrl() and setPreviewUrl() the new PSR-14 event feature the following methods:

• getDatabaseRow(): Returns the whole database row for the corresponding record
• getFieldConfiguration(): Returns the processed field configuration
• getFile(): Returns the resolved file object

Example

Registration of the event in your extension's Services.yaml:

MyVendor\MyPackage\Backend\MyEventListener:
  tags:
    - name: event.listener
      identifier: 'my-package/backend/modify-imagemanipulation-previewurl'

The corresponding event listener class:

use TYPO3\CMS\Backend\Form\Event\ModifyImageManipulationPreviewUrlEvent;

final class MyEventListener
{
    public function __invoke(ModifyImageManipulationPreviewUrlEvent $event): void
    {
        $event->setPreviewUrl('https://example.com/some/preview/url');
    }
}

Impact

It's now possible to modify the preview URL for the image manipulation element, using the new PSR-14 event ModifyImageManipulationPreviewUrlEvent.