From 67bad198b317252f5ba3a46d4dad17834f5d8855 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tomasz=20Wolda=C5=84ski?= <t.woldanski@macopedia.com>
Date: Fri, 17 Nov 2023 13:14:05 +0100
Subject: [PATCH] [TASK] Set feature behind a flag Resolves #678

---
 Configuration/Services.php            | 11 +++++++----
 Documentation/Configuration/Index.rst | 24 ++++++++++++++++++++++++
 2 files changed, 31 insertions(+), 4 deletions(-)

diff --git a/Configuration/Services.php b/Configuration/Services.php
index f2787d28..5f0196e6 100644
--- a/Configuration/Services.php
+++ b/Configuration/Services.php
@@ -77,13 +77,16 @@
         'event.listener',
         ['identifier' => 'headless/AfterLinkIsGenerated']
     );
-    $services->set(AfterCacheableContentIsGeneratedListener::class)->tag(
-        'event.listener',
-        ['identifier' => 'headless/AfterCacheableContentIsGenerated']
-    );
 
     $features = GeneralUtility::makeInstance(Features::class);
 
+    if ($features->isFeatureEnabled('headless.pageTitleProviders')) {
+        $services->set(AfterCacheableContentIsGeneratedListener::class)->tag(
+            'event.listener',
+            ['identifier' => 'headless/AfterCacheableContentIsGenerated']
+        );
+    }
+
     if ($feloginInstalled) {
         $services->set(LoginConfirmedEventListener::class)->tag(
             'event.listener',
diff --git a/Documentation/Configuration/Index.rst b/Documentation/Configuration/Index.rst
index a77fce7a..dada551f 100644
--- a/Documentation/Configuration/Index.rst
+++ b/Documentation/Configuration/Index.rst
@@ -124,6 +124,15 @@ To enable headless support for `EXT:workspaces` please also add to you site(s) c
 
    headless: true
 
+**headless.pageTitleProviders**
+
+Enable support for PageTitle API
+
+.. code-block:: php
+
+   $GLOBALS['TYPO3_CONF_VARS']['SYS']['features']['headless.pageTitleProviders'] = true;
+
+
 **Availability of feature toggles by version**
 
 .. t3-field-list-table::
@@ -132,42 +141,57 @@ To enable headless support for `EXT:workspaces` please also add to you site(s) c
    -  :Header1:   Flag
       :Header2:   2.x
       :Header3:   3.x
+      :Header3:   4.x
 
    -  :Header1:   FrontendBaseUrlInPagePreview
       :Header2:   available
       :Header3:   removed
+      :Header4:   removed
 
    -  :Header1:   headless.frontendUrls
       :Header2:   >= 2.5
       :Header3:   available
+      :Header4:   removed
 
    -  :Header1:   headless.storageProxy
       :Header2:   >= 2.4
       :Header3:   available
+      :Header4:   available
 
    -  :Header1:   headless.redirectMiddlewares
       :Header2:   >= 2.5
       :Header3:   available
+      :Header4:   available
 
    -  :Header1:   headless.nextMajor
       :Header2:   >= 2.2
       :Header3:   currently not used
+      :Header4:   currently not used
 
    -  :Header1:   headless.elementBodyResponse
       :Header2:   >= 2.6
       :Header3:   available
+      :Header4:   available
 
    -  :Header1:   headless.simplifiedLinkTarget
       :Header2:   >= 2.6
       :Header3:   removed
+      :Header4:   not available
 
    -  :Header1:   headless.jsonViewModule
       :Header2:   not available
       :Header3:   >= 3.0
+      :Header4:   >= 3.0
 
    -  :Header1:   headless.workspaces
       :Header2:   not available
       :Header3:   >= 3.1
+      :Header4:   >= 3.1
+
+   -  :Header1:   headless.pageTitleProviders
+      :Header2:   not available
+      :Header3:   not available
+      :Header4:   >= 4.2.3
 
 .. _configuration-ext-form: