Feature: #97454 - PSR-14 events for modifying link browser behavior 

Description 

Two new PSR-14 events \TYPO3\CMS\Backend\Controller\Event\ModifyLinkHandlersEvent and \TYPO3\CMS\Backend\Controller\Event\ModifyAllowedItemsEvent have been introduced which serve as a direct replacement for the now removed $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['LinkBrowser']['hooks'] hooks.

The ModifyLinkHandlersEvent is triggered before link handlers are executed, allowing listeners to modify the set of handlers that will be used. It is the direct replacement for the method modifyLinkHandlers() in the LinkBrowser hook.

The ModifyAllowedItemsEvent can be used to dynamically modify the allowed link types. It is the direct replacement for the method modifyAllowedItems() in the LinkBrowser hook.

Example 

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

MyVendor\MyPackage\MyEventListener:
  tags:
    - name: event.listener
      identifier: 'my-package/recordlist/link-handlers'

The corresponding event listener class:

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

final class MyEventListener
{
    public function __invoke(ModifyLinkHandlersEvent $event): void
    {
        $handler = $event->getLinkHandler('url.');
        $handler['label'] = 'My custom label';
        $event->setLinkHandler('url.', $handler);
    }
}

Impact 

It's now possible to modify link handlers behavior using the new PSR-14 ModifyLinkHandlersEvent and ModifyAllowedItemsEvent .