add event AfterVariableDefinition

Author: devtroll

Classes/Event/AfterVariableDefinitionEvent.php

@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+namespace WapplerSystems\WsScss\Event;
+
+final class AfterVariableDefinitionEvent
+{
+	public function __construct(private array $variables)
+	{
+	}
+
+	public function getVariables(): array
+	{
+		return $this->variables;
+	}
+
+	public function setVariables(array $variables): void
+	{
+		$this->variables = $variables;
+	}
+}

Classes/Hooks/RenderPreProcessorHook.php

@@ -22,6 +22,7 @@
  *  This copyright notice MUST APPEAR in all copies of the script!
  ***************************************************************/
 
+use Psr\EventDispatcher\EventDispatcherInterface;
 use ScssPhp\ScssPhp\Exception\SassException;
 use ScssPhp\ScssPhp\OutputStyle;
 use TYPO3\CMS\Core\Cache\Exception\NoSuchCacheException;
@@ -32,6 +33,7 @@
 use TYPO3\CMS\Core\Utility\PathUtility;
 use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
 use WapplerSystems\WsScss\Compiler;
+use WapplerSystems\WsScss\Event\AfterVariableDefinitionEvent;
 
 /**
  * Hook to preprocess scss files
@@ -93,6 +95,10 @@ public function renderPreProcessorProc(array &$params, PageRenderer $pageRendere
             $this->variables = $parsedTypoScriptVariables;
         }
 
+        $eventDispatcher = GeneralUtility::makeInstance(EventDispatcherInterface::class);
+        $event = $eventDispatcher->dispatch(new AfterVariableDefinitionEvent($this->variables));
+        $this->variables = $event->getVariables();
+
         // we need to rebuild the CSS array to keep order of CSS files
         $cssFiles = [];
         foreach ($params['cssFiles'] as $file => $conf) {