Breaking: #102715 - Frontend "determineId()" related events changed

Description

With the continued refactoring of \TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController , the following events have been adapted:

• \TYPO3\CMS\Frontend\Event\BeforePageIsResolvedEvent
• \TYPO3\CMS\Frontend\Event\AfterPageWithRootLineIsResolvedEvent
• \TYPO3\CMS\Frontend\Event\AfterPageAndLanguageIsResolvedEvent

The three events no longer retrieve an instance of TypoScriptFrontendController, the getter methods getController() have been removed: The controller is instantiated after the events have been dispatched, event listeners can no longer work with this object.

Instead, the events now contain an instance of the new :abbr:DTO (Data Transfer Object) :php:TYPO3CMSFrontendPagePageInformation`, which can be retrieved and manipulated by event listeners if necessary.

Impact

Calling getController() by consumers of above events will raise a fatal PHP error.

Also note the events may not be dispatched anymore when the middleware \TYPO3\CMS\Frontend\Middleware\TypoScriptFrontendInitialization creates early responses.

Affected installations

Those events are in place for a couple of special cases during early frontend rendering. Most instances will not be affected, but some extensions may register event listeners.

Migration

Use method getPageInformation() instead to retrieve calculated page state at this point in the frontend rendering chain. Event listeners that manipulate that object should set it again within the event using setPageInformation().

In case middleware TypoScriptFrontendInitialization no longer dispatches an event when it created an early response on its own, an own middleware can be added around that middleware to retrieve and further manipulate a response if needed.