Added an settings option to control what languages to show in the dropdown menu

src/Form/Type/LanguageMenuEntriesType.php

@@ -0,0 +1,57 @@
+<?php
+/*
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ *  Copyright (C) 2019 - 2025 Jan Böhmer (https://github.com/jbtronics)
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+declare(strict_types=1);
+
+
+namespace App\Form\Type;
+
+use Symfony\Component\DependencyInjection\Attribute\Autowire;
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\Extension\Core\Type\LanguageType;
+use Symfony\Component\Form\Extension\Core\Type\LocaleType;
+use Symfony\Component\Intl\Languages;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+
+class LanguageMenuEntriesType extends AbstractType
+{
+    public function __construct(#[Autowire(param: 'partdb.locale_menu')] private readonly array $preferred_languages)
+    {
+
+    }
+
+    public function getParent(): string
+    {
+        return LanguageType::class;
+    }
+
+    public function configureOptions(OptionsResolver $resolver): void
+    {
+        $choices = [];
+        foreach ($this->preferred_languages as $lang_code) {
+            $choices[Languages::getName($lang_code)] = $lang_code;
+        }
+
+        $resolver->setDefaults([
+            'choice_loader' => null,
+            'choices' => $choices,
+        ]);
+    }
+}

src/Settings/SystemSettings/LocalizationSettings.php

@@ -23,9 +23,12 @@ declare(strict_types=1);
 
 namespace App\Settings\SystemSettings;
 
+use App\Form\Type\LanguageMenuEntriesType;
 use App\Form\Type\LocaleSelectType;
 use App\Settings\SettingsIcon;
 use Jbtronics\SettingsBundle\Metadata\EnvVarMode;
+use Jbtronics\SettingsBundle\ParameterTypes\ArrayType;
+use Jbtronics\SettingsBundle\ParameterTypes\StringType;
 use Jbtronics\SettingsBundle\Settings\Settings;
 use Jbtronics\SettingsBundle\Settings\SettingsParameter;
 use Jbtronics\SettingsBundle\Settings\SettingsTrait;
@@ -60,4 +63,14 @@ class LocalizationSettings
         envVar: "string:BASE_CURRENCY", envVarMode: EnvVarMode::OVERWRITE
     )]
     public string $baseCurrency = 'EUR';
-}
+
+    #[SettingsParameter(type: ArrayType::class,
+        label: new TM("settings.system.localization.language_menu_entries"),
+        description: new TM("settings.system.localization.language_menu_entries.description"),
+        options: ['type' => StringType::class],
+        formType: LanguageMenuEntriesType::class,
+        formOptions: ['multiple' => true, 'required' => false, 'ordered' => true],
+    )]
+    #[Assert\All([new Assert\Locale()])]
+    public array $languageMenuEntries = [];
+}