Add forwards compatibility for the old mooRainbow color picker

Author: zoglo

composer.json

@@ -55,7 +55,9 @@
   "require": {
     "php": "^8.1",
     "ext-json": "*",
+    "contao-components/colorpicker": "^1.5",
     "contao/core-bundle": "^4.13 || ^5.0",
+    "symfony/asset": "^5.4 || ^6.0",
     "symfony/config": "^5.4 || ^6.0",
     "symfony/console": "^5.4 || ^6.0",
     "symfony/dependency-injection": "^5.4 || ^6.0",

src/EventListener/Contao/InitializeSystem.php

@@ -23,10 +23,12 @@
 
 namespace MenAtWork\MultiColumnWizardBundle\EventListener\Contao;
 
+use Contao\CoreBundle\ContaoCoreBundle;
 use Contao\Environment;
 use Contao\Input;
 use Contao\System;
 use MenAtWork\MultiColumnWizardBundle\Service\ContaoApiService;
+use Symfony\Component\Asset\Packages;
 
 /**
  * Class InitializeSystem
@@ -38,12 +40,19 @@ class InitializeSystem
      */
     private ContaoApiService $contaoApi;
 
+    /**
+     * @var Packages
+     */
+    private Packages $packages;
+
     /**
      * @param ContaoApiService $contaoApi
+     * @param Packages $packages
      */
-    public function __construct(ContaoApiService $contaoApi)
+    public function __construct(ContaoApiService $contaoApi, Packages $packages)
     {
         $this->contaoApi = $contaoApi;
+        $this->packages = $packages;
     }
 
     /**
@@ -70,6 +79,12 @@ public function addSystemNecessaryThings(): void
         $GLOBALS['TL_CSS']['multicolumnwizard'] = System::getContainer()->get('kernel')->isDebug()
             ? 'bundles/multicolumnwizard/css/multicolumnwizard_src.css'
             : 'bundles/multicolumnwizard/css/multicolumnwizard.css';
+
+        // Load the old mooRainbow picker in Contao 5.5
+        if (version_compare(ContaoCoreBundle::getVersion(), '5.5', '>=')) {
+            $GLOBALS['TL_JAVASCRIPT']['mooRainbow'] = $this->packages->getUrl('js/mooRainbow.min.js', 'contao-components/colorpicker');
+            $GLOBALS['TL_CSS']['mooRainbow'] = $this->packages->getUrl('css/mooRainbow.min.css', 'contao-components/colorpicker');
+        }
     }
 
     /**

src/Resources/config/services.yml

@@ -10,6 +10,7 @@ services:
     public: true
     arguments:
       - '@MenAtWork\MultiColumnWizardBundle\Service\ContaoApiService'
+      - '@assets.packages'
 
   MenAtWork\MultiColumnWizardBundle\EventListener\Contao\LoadDataContainer:
     public: true