Feature: #90945 - PSR-14 event for LocalizationController when reading records/columns to be translated

See Issue #90945

Description

A new PSR-14 event \TYPO3\CMS\Backend\Controller\Event\AfterPageColumnsSelectedForLocalizationEvent has been added and will be dispatched after records and columns are collected in the :php`LocalizationController`.

The event receives:

  • The default columns and columnsList built by LocalizationController
  • The list of records that were analyzed to create the columns manifest
  • The parameters received by the :php`LocalizationController`

The event allows changes to:

  • the columns
  • the columnsList

Impact

This allows third party code to read or manipulate the “columns manifest” that gets displayed in the translation modal when a user has clicked the Translate button in the page module, by implementing a listener for the \TYPO3\CMS\Backend\Controller\Event\AfterPageColumnsSelectedForLocalizationEvent event.