From 46e9d3a34658ad54eef10e5ca07754cb87a0fe37 Mon Sep 17 00:00:00 2001
From: Achim Fritz <af@achimfritz.de>
Date: Wed, 19 Feb 2025 16:18:37 +0100
Subject: [PATCH] [BUGFIX] autoParagraph and enterMode

both configurations autoParagraph: 1 and enterMode: 2
are dropped with CKEditor 5
we introduced an event listener for replace paragraphs for TYPO3 v13
---
 .../AfterTransformTextForPersistence.php      | 33 +++++++++++++++++++
 Configuration/RTE/Richtextinputfields.yaml    |  2 ++
 2 files changed, 35 insertions(+)
 create mode 100644 Classes/EventListener/AfterTransformTextForPersistence.php

diff --git a/Classes/EventListener/AfterTransformTextForPersistence.php b/Classes/EventListener/AfterTransformTextForPersistence.php
new file mode 100644
index 0000000..33e9043
--- /dev/null
+++ b/Classes/EventListener/AfterTransformTextForPersistence.php
@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+namespace B13\Richtextinputfields\EventListener;
+
+use TYPO3\CMS\Core\Attribute\AsEventListener;
+use TYPO3\CMS\Core\Html\Event\AfterTransformTextForPersistenceEvent;
+
+#[AsEventListener(
+    identifier: 'b13/richtextinputfields/afterTransformTextForPersistence'
+)]
+class AfterTransformTextForPersistence
+{
+    public function __invoke(AfterTransformTextForPersistenceEvent $event): void
+    {
+        // this replace ckeditor 4 configurations:
+        // enterMode: 2 # <br> instead of <p>
+        // autoParagraph: false
+        $config = $event->getProcessingConfiguration();
+        if ((bool)($config['plainRichText'] ?? false) === false) {
+            return;
+        }
+        $content = $event->getHtmlContent();
+        $pattern = '/<p(.*?)>((.*?)+)\<\/p>/';
+        $matches = [];
+        $cnt = preg_match_all($pattern, $content, $matches);
+        if ($cnt > 0) {
+            $event->setHtmlContent(implode('<br>', $matches[2]));
+        }
+    }
+
+}
diff --git a/Configuration/RTE/Richtextinputfields.yaml b/Configuration/RTE/Richtextinputfields.yaml
index 9117a9b..d52f058 100644
--- a/Configuration/RTE/Richtextinputfields.yaml
+++ b/Configuration/RTE/Richtextinputfields.yaml
@@ -35,6 +35,8 @@ editor:
 
 processing:
   overruleMode: nothing
+  # v13: autoParagraph: false and enterMode: 2
+  plainRichText: true
   allowTags:
     - sub
     - sup