Feature-Request FluidTYPO3#406 a slot to modify forms

Classes/Service/PageService.php

@@ -21,6 +21,7 @@
 use TYPO3\CMS\Core\Utility\GeneralUtility;
 use TYPO3\CMS\Extbase\Configuration\ConfigurationManagerInterface;
 use TYPO3\CMS\Extbase\Object\ObjectManager;
+use TYPO3\CMS\Extbase\SignalSlot\Dispatcher;
 use TYPO3\CMS\Fluid\View\TemplateView;
 use TYPO3Fluid\Fluid\View\Exception\InvalidSectionException;
 
@@ -48,6 +49,11 @@ class PageService implements SingletonInterface
  */
  protected $configurationService;
 
+ /**
+ * @var Dispatcher
+ */
+ protected $signalSlotDispatcher = null;
+
  /**
  * @var WorkspacesAwareRecordService
  */
@@ -224,6 +230,7 @@ public function getAvailablePageTemplateFiles($format = 'html')
  try {
  $view->renderSection('Configuration');
  $form = $view->getRenderingContext()->getViewHelperVariableContainer()->get(FormViewHelper::class, 'form');
+ $this->emitAfterFormCreate($form, $extensionName);
 
  if (false === $form instanceof Form) {
  $logger->log(
@@ -256,4 +263,19 @@ protected function getRuntimeCache()
  {
  return GeneralUtility::makeInstance(CacheManager::class)->getCache('cache_runtime');
  }
+
+ /**
+ * Emits a signal after a form has been created.
+ *
+ * @param Form $form
+ * @param String $extensionName
+ */
+ protected function emitAfterFormCreate(Form $form, String $extensionName)
+ {
+ if ($this->signalSlotDispatcher === null) {
+ $this->signalSlotDispatcher = GeneralUtility::makeInstance(Dispatcher::class);
+ }
+ $this->signalSlotDispatcher->dispatch(__CLASS__, 'afterFormCreate', [$form, $extensionName]);
+ }
+
 }