From 695f3455e6d3f99163978e12a4acb3d35d864c41 Mon Sep 17 00:00:00 2001
From: Harald Bamberger <harald.bamberger@technikum-wien.at>
Date: Thu, 16 Apr 2026 15:20:11 +0200
Subject: [PATCH] add function generateCSSsIncludeIfExtensionCssExists and use
 to load additional tag.css from extensions if exists

---
 application/helpers/hlp_header_helper.php  | 22 ++++++++++++++++++++++
 application/views/templates/FHC-Header.php |  6 +++++-
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/application/helpers/hlp_header_helper.php b/application/helpers/hlp_header_helper.php
index 27dfba5a1..53a5f5ba3 100644
--- a/application/helpers/hlp_header_helper.php
+++ b/application/helpers/hlp_header_helper.php
@@ -270,6 +270,28 @@ function absoluteJsImportUrl($relurl)
 	return $url;
 }
 
+/*
+ * Generate Css File Include if Extension contains file
+ *
+ * @param $relativeFilePath path relative to Extension public/css dir
+ */
+function generateCSSsIncludeIfExtensionCssExists($relativeFilePath)
+{
+	$fsiterator = new FilesystemIterator(FHCPATH . 'application/extensions');
+	foreach ($fsiterator as $fsitem)
+	{
+		if(preg_match('/^FHC-Core-/', $fsitem->getBasename()))
+		{
+			$extensionfile = 'public/extensions/' . $fsitem->getBasename() 
+				. '/css/' . $relativeFilePath;
+			if(is_readable(FHCPATH . $extensionfile))
+			{
+				generateCSSsInclude($extensionfile);
+			}
+		}
+	}
+}
+
 /*
  * Manipulate CI views includes Array to load
  *   - public/js/FhcApps.js via customJSs and
diff --git a/application/views/templates/FHC-Header.php b/application/views/templates/FHC-Header.php
index 7b53cbf5d..4203aa571 100644
--- a/application/views/templates/FHC-Header.php
+++ b/application/views/templates/FHC-Header.php
@@ -132,7 +132,11 @@
 			if ($cis === true) generateCSSsInclude(defined('CIS4') ? 'public/css/cis4.css' : 'public/css/cis_bs5.css');
 
 			//Tags
-			if ($tags === true) generateCSSsInclude('public/css/tags.css');
+			if ($tags === true) 
+			{
+				generateCSSsInclude('public/css/tags.css');
+				generateCSSsIncludeIfExtensionCssExists('tags.css');
+			}
 
 			$extapphelper = ExtendableAppsHelper::getInstance();
 			$extapphelper->init($customCSSs, $customJSs, $customJSModules);