Add: Configurable UI Language Support with Dynamic Filtering (#2846)

# Description of Changes ### Summary - Added support for configuring UI languages via `settings.yml` (`languages` field). - Modified `LanguageService` to respect the configured languages, while ensuring British English (`en_GB`) is always enabled. - Updated Thymeleaf templates to dynamically display only the allowed languages. - Improved logging and refactored some list-to-set conversions for better efficiency. ### Why the Change? - Allows administrators to limit available UI languages instead of displaying all detected languages. - Provides better customization options and simplifies language management. ### Challenges Encountered - Ensuring backwards compatibility: If `languages` is empty, all languages remain enabled. - Handling `Set<String>` instead of `List<String>` in `LanguageService` for optimized lookups. --- ## Checklist ### General - [x] I have read the [Contribution Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md) - [x] I have read the [Stirling-PDF Developer Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md) (if applicable) - [x] I have read the [How to add new languages to Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md) (if applicable) - [x] I have performed a self-review of my own code - [x] My changes generate no new warnings ### Documentation - [ ] I have updated relevant docs on [Stirling-PDF's doc repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/) (if functionality has heavily changed) - [x] I have read the section [Add New Translation Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md#add-new-translation-tags) (for new translation tags only) ### UI Changes (if applicable) - [ ] Screenshots or videos demonstrating the UI changes are attached (e.g., as comments or direct attachments in the PR) ### Testing (if applicable) - [x] I have tested my changes locally. Refer to the [Testing Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md#6-testing) for more details.
2025-10-25 11:17:28 +02:00 · 2025-02-03 11:52:34 +01:00 · 2025-02-03 11:52:34 +01:00 · b37457b41d
commit b37457b41d
parent 46c53a9c88
8 changed files with 97 additions and 71 deletions
--- a/HowToAddNewLanguage.md
+++ b/HowToAddNewLanguage.md
@ -18,9 +18,7 @@ Any SVG flags are fine; most of the current ones were sourced from [here](https:
 For example, to add Polish, you would add:

 ```html
-<a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="pl_PL">
-    <img src="images/flags/pl.svg" alt="icon" width="20" height="15"> Polski
-</a>
+<a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'pl_PL')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="pl_PL"> <img th:src="@{'/images/flags/pl.svg'}" alt="icon" width="20" height="15"> Polski</a>
 ```

 The `data-bs-language-code` is the code used to reference the file in the next step.
--- a/src/main/java/stirling/software/SPDF/config/AppConfig.java
+++ b/src/main/java/stirling/software/SPDF/config/AppConfig.java
@ -4,6 +4,7 @@ import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
+import java.util.List;
 import java.util.Properties;
 import java.util.function.Predicate;

@ -74,6 +75,11 @@ public class AppConfig {
                : "null";
    }

+    @Bean(name = "languages")
+    public List<String> languages() {
+        return applicationProperties.getUi().getLanguages();
+    }
+
    @Bean(name = "navBarText")
    public String navBarText() {
        String defaultNavBar =
--- a/src/main/java/stirling/software/SPDF/controller/api/AdditionalLanguageJsController.java
+++ b/src/main/java/stirling/software/SPDF/controller/api/AdditionalLanguageJsController.java
@ -2,7 +2,9 @@ package stirling.software.SPDF.controller.api;

 import java.io.IOException;
 import java.io.PrintWriter;
+import java.util.ArrayList;
 import java.util.List;
+import java.util.Set;

 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
@ -26,11 +28,11 @@ public class AdditionalLanguageJsController {
    @Hidden
    @GetMapping(value = "/additionalLanguageCode.js", produces = "application/javascript")
    public void generateAdditionalLanguageJs(HttpServletResponse response) throws IOException {
-        List<String> supportedLanguages = languageService.getSupportedLanguages();
+        Set<String> supportedLanguages = languageService.getSupportedLanguages();
        response.setContentType("application/javascript");
        PrintWriter writer = response.getWriter();
        // Erstelle das JavaScript dynamisch
-        writer.println("const supportedLanguages = " + toJsonArray(supportedLanguages) + ";");
+        writer.println("const supportedLanguages = " + toJsonArray(new ArrayList<>(supportedLanguages)) + ";");
        // Generiere die `getDetailedLanguageCode`-Funktion
        writer.println(
                """
--- a/src/main/java/stirling/software/SPDF/controller/web/DatabaseWebController.java
+++ b/src/main/java/stirling/software/SPDF/controller/web/DatabaseWebController.java
@ -36,8 +36,9 @@ public class DatabaseWebController {
        }
        List<FileInfo> backupList = databaseService.getBackupList();
        model.addAttribute("backupFiles", backupList);
-        model.addAttribute("databaseVersion", databaseService.getH2Version());
-        if ("Unknown".equalsIgnoreCase(databaseService.getH2Version())) {
+        String dbVersion = databaseService.getH2Version();
+        model.addAttribute("databaseVersion", dbVersion);
+        if ("Unknown".equalsIgnoreCase(dbVersion)) {
            model.addAttribute("infoMessage", "notSupported");
        }
        return "database";
--- a/src/main/java/stirling/software/SPDF/model/ApplicationProperties.java
+++ b/src/main/java/stirling/software/SPDF/model/ApplicationProperties.java
@ -265,7 +265,8 @@ public class ApplicationProperties {
                            return getKeycloak();
                        default:
                            throw new UnsupportedProviderException(
-                                    "Logout from the provider is not supported? Report it at https://github.com/Stirling-Tools/Stirling-PDF/issues");
+                                    "Logout from the provider is not supported? Report it at"
+                                            + " https://github.com/Stirling-Tools/Stirling-PDF/issues");
                    }
                }
            }
@ -313,10 +314,10 @@ public class ApplicationProperties {
        @Override
        public String toString() {
            return """
-                    Driver {
-                      driverName='%s'
-                    }
-                    """
+            Driver {
+              driverName='%s'
+            }
+            """
                    .formatted(driverName);
        }
    }
@ -326,6 +327,7 @@ public class ApplicationProperties {
        private String appName;
        private String homeDescription;
        private String appNameNavbar;
+        private List<String> languages;

        public String getAppName() {
            return appName != null && appName.trim().length() > 0 ? appName : null;
--- a/src/main/java/stirling/software/SPDF/service/LanguageService.java
+++ b/src/main/java/stirling/software/SPDF/service/LanguageService.java
@ -1,41 +1,57 @@
 package stirling.software.SPDF.service;

 import java.io.IOException;
-import java.util.ArrayList;
-import java.util.List;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.stream.Collectors;
+import java.util.Arrays;

 import org.springframework.core.io.Resource;
 import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
 import org.springframework.stereotype.Service;

+import lombok.extern.slf4j.Slf4j;
+import stirling.software.SPDF.model.ApplicationProperties;
+
@Service
+@Slf4j
 public class LanguageService {

+    private final ApplicationProperties applicationProperties;
    private final PathMatchingResourcePatternResolver resourcePatternResolver =
            new PathMatchingResourcePatternResolver();

-    public List<String> getSupportedLanguages() {
-        List<String> supportedLanguages = new ArrayList<>();
+    public LanguageService(
+            ApplicationProperties applicationProperties) {
+        this.applicationProperties = applicationProperties;
+    }

+    public Set<String> getSupportedLanguages() {
        try {
            Resource[] resources =
                    resourcePatternResolver.getResources("classpath*:messages_*.properties");
-            for (Resource resource : resources) {
-                if (resource.exists() && resource.isReadable()) {
-                    String filename = resource.getFilename();
-                    if (filename != null
-                            && filename.startsWith("messages_")
-                            && filename.endsWith(".properties")) {
-                        String languageCode =
-                                filename.replace("messages_", "").replace(".properties", "");
-                        supportedLanguages.add(languageCode);
-                    }
-                }
-            }
-        } catch (IOException e) {
-            e.printStackTrace();
-        }

-        return supportedLanguages;
+            return Arrays.stream(resources)
+                    .map(Resource::getFilename)
+                    .filter(
+                            filename ->
+                                    filename != null
+                                            && filename.startsWith("messages_")
+                                            && filename.endsWith(".properties"))
+                    .map(filename -> filename.replace("messages_", "").replace(".properties", ""))
+                    .filter(
+                            languageCode -> {
+                                Set<String> allowedLanguages =
+                                        new HashSet<>(applicationProperties.getUi().getLanguages());
+                                return allowedLanguages.isEmpty()
+                                        || allowedLanguages.contains(languageCode)
+                                        || "en_GB".equals(languageCode);
+                            })
+                    .collect(Collectors.toSet());
+
+        } catch (IOException e) {
+            log.error("Error retrieving supported languages", e);
+            return new HashSet<>();
+        }
    }
 }
--- a/src/main/resources/settings.yml.template
+++ b/src/main/resources/settings.yml.template
@ -101,6 +101,7 @@ ui:
  appName: '' # application's visible name
  homeDescription: '' # short description or tagline shown on the homepage
  appNameNavbar: '' # name displayed on the navigation bar
+  languages: [] # If empty, all languages are enabled. To display only German and Polish ["de_DE", "pl_PL"]. British English is always enabled.

 endpoints:
  toRemove: [] # list endpoints to disable (e.g. ['img-to-pdf', 'remove-pages'])
--- a/src/main/resources/templates/fragments/languages.html
+++ b/src/main/resources/templates/fragments/languages.html
@ -1,42 +1,42 @@
 <th:block th:fragment="langs">
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="bg_BG"> <img th:src="@{'/images/flags/bg.svg'}" alt="icon" width="20" height="15"> Български</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="ar_AR"> <img th:src="@{'/images/flags/sa.svg'}" alt="icon" width="20" height="15"> العربية</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="ca_CA"> <img th:src="@{'/images/flags/es-ct.svg'}" alt="icon" width="20" height="15"> Català</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="zh_CN"> <img th:src="@{'/images/flags/cn.svg'}" alt="icon" width="20" height="15"> 简体中文</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="zh_TW"> <img th:src="@{'/images/flags/tw.svg'}" alt="icon" width="20" height="15"> 繁體中文</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="zh_BO"> <img th:src="@{'/images/flags/cn.svg'}" alt="icon" width="20" height="15"> བོད་ཡིག</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="az_AZ"> <img th:src="@{'/images/flags/az.svg'}" alt="icon" width="20" height="15"> Azərbaycan Dili</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="da_DK"> <img th:src="@{'/images/flags/dk.svg'}" alt="icon" width="20" height="15"> Dansk</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="de_DE"> <img th:src="@{'/images/flags/de.svg'}" alt="icon" width="20" height="15"> Deutsch</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'bg_BG')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="bg_BG"> <img th:src="@{'/images/flags/bg.svg'}" alt="icon" width="20" height="15"> Български</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'ar_AR')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="ar_AR"> <img th:src="@{'/images/flags/sa.svg'}" alt="icon" width="20" height="15"> العربية</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'ca_CA')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="ca_CA"> <img th:src="@{'/images/flags/es-ct.svg'}" alt="icon" width="20" height="15"> Català</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'zh_CN')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="zh_CN"> <img th:src="@{'/images/flags/cn.svg'}" alt="icon" width="20" height="15"> 简体中文</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'zh_TW')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="zh_TW"> <img th:src="@{'/images/flags/tw.svg'}" alt="icon" width="20" height="15"> 繁體中文</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'zh_BO')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="zh_BO"> <img th:src="@{'/images/flags/cn.svg'}" alt="icon" width="20" height="15"> བོད་ཡིག</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'az_AZ')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="az_AZ"> <img th:src="@{'/images/flags/az.svg'}" alt="icon" width="20" height="15"> Azərbaycan Dili</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'da_DK')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="da_DK"> <img th:src="@{'/images/flags/dk.svg'}" alt="icon" width="20" height="15"> Dansk</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'de_DE')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="de_DE"> <img th:src="@{'/images/flags/de.svg'}" alt="icon" width="20" height="15"> Deutsch</a>
                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="en_GB"> <img th:src="@{'/images/flags/gb.svg'}" alt="icon" width="20" height="15"> English (GB)</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="en_US"> <img th:src="@{'/images/flags/us.svg'}" alt="icon" width="20" height="15"> English (US)</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="eu_ES"> <img th:src="@{'/images/flags/eu.svg'}" alt="icon" width="20" height="15"> Euskara</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="es_ES"> <img th:src="@{'/images/flags/es.svg'}" alt="icon" width="20" height="15"> Español</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="fr_FR"> <img th:src="@{'/images/flags/fr.svg'}" alt="icon" width="20" height="15"> Français</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="id_ID"> <img th:src="@{'/images/flags/id.svg'}" alt="icon" width="20" height="15"> Indonesia</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="ga_IE"> <img th:src="@{'/images/flags/ie.svg'}" alt="icon" width="20" height="15"> Irish</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="it_IT"> <img th:src="@{'/images/flags/it.svg'}" alt="icon" width="20" height="15"> Italiano</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="nl_NL"> <img th:src="@{'/images/flags/nl.svg'}" alt="icon" width="20" height="15"> Nederlands</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="fa_IR"> <img th:src="@{'/images/flags/ir.svg'}" alt="icon" width="20" height="15"> پارسی</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="pl_PL"> <img th:src="@{'/images/flags/pl.svg'}" alt="icon" width="20" height="15"> Polski</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="pt_BR"> <img th:src="@{'/images/flags/pt_br.svg'}" alt="icon" width="20" height="15"> Português (BR)</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="pt_PT"> <img th:src="@{'/images/flags/pt_pt.svg'}" alt="icon" width="20" height="15"> Português (PT)</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="ro_RO"> <img th:src="@{'/images/flags/ro.svg'}" alt="icon" width="20" height="15"> Romanian</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="sk_SK"> <img th:src="@{'/images/flags/sk.svg'}" alt="icon" width="20" height="15"> Slovensky</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="sl_SI"> <img th:src="@{'/images/flags/si.svg'}" alt="icon" width="20" height="15"> Slovenian</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="sv_SE"> <img th:src="@{'/images/flags/se.svg'}" alt="icon" width="20" height="15"> Svenska</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="tr_TR"> <img th:src="@{'/images/flags/tr.svg'}" alt="icon" width="20" height="15"> Türkçe</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="ru_RU"> <img th:src="@{'/images/flags/ru.svg'}" alt="icon" width="20" height="15"> Русский</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="ko_KR"> <img th:src="@{'/images/flags/kr.svg'}" alt="icon" width="20" height="15"> 한국어</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="ja_JP"> <img th:src="@{'/images/flags/jp.svg'}" alt="icon" width="20" height="15"> 日本語</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="el_GR"> <img th:src="@{'/images/flags/gr.svg'}" alt="icon" width="20" height="15"> Ελληνικά</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="hu_HU"> <img th:src="@{'/images/flags/hu.svg'}" alt="icon" width="20" height="15"> Hungarian</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="hi_IN"> <img th:src="@{'/images/flags/in.svg'}" alt="icon" width="20" height="15"> हिन्दी</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="sr_LATN_RS"> <img th:src="@{'/images/flags/rs.svg'}" alt="icon" width="20" height="15"> Srpski</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="uk_UA"> <img th:src="@{'/images/flags/ua.svg'}" alt="icon" width="20" height="15"> Українська</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="cs_CZ"> <img th:src="@{'/images/flags/cz.svg'}" alt="icon" width="20" height="15"> Česky</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="hr_HR"> <img th:src="@{'/images/flags/hr.svg'}" alt="icon" width="20" height="15"> Hrvatski</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="no_NB"> <img th:src="@{'/images/flags/no.svg'}" alt="icon" width="20" height="15"> Norsk</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="th_TH"> <img th:src="@{'/images/flags/th.svg'}" alt="icon" width="20" height="15"> ไทย</a>
-                      <a class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="vi_VN"> <img th:src="@{'/images/flags/vn.svg'}" alt="icon" width="20" height="15"> Tiếng Việt</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'en_US')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="en_US"> <img th:src="@{'/images/flags/us.svg'}" alt="icon" width="20" height="15"> English (US)</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'eu_ES')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="eu_ES"> <img th:src="@{'/images/flags/eu.svg'}" alt="icon" width="20" height="15"> Euskara</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'es_ES')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="es_ES"> <img th:src="@{'/images/flags/es.svg'}" alt="icon" width="20" height="15"> Español</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'fr_FR')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="fr_FR"> <img th:src="@{'/images/flags/fr.svg'}" alt="icon" width="20" height="15"> Français</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'id_ID')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="id_ID"> <img th:src="@{'/images/flags/id.svg'}" alt="icon" width="20" height="15"> Indonesia</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'ga_IE')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="ga_IE"> <img th:src="@{'/images/flags/ie.svg'}" alt="icon" width="20" height="15"> Irish</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'it_IT')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="it_IT"> <img th:src="@{'/images/flags/it.svg'}" alt="icon" width="20" height="15"> Italiano</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'nl_NL')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="nl_NL"> <img th:src="@{'/images/flags/nl.svg'}" alt="icon" width="20" height="15"> Nederlands</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'fa_IR')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="fa_IR"> <img th:src="@{'/images/flags/ir.svg'}" alt="icon" width="20" height="15"> پارسی</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'pl_PL')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="pl_PL"> <img th:src="@{'/images/flags/pl.svg'}" alt="icon" width="20" height="15"> Polski</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'pt_BR')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="pt_BR"> <img th:src="@{'/images/flags/pt_br.svg'}" alt="icon" width="20" height="15"> Português (BR)</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'pt_PT')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="pt_PT"> <img th:src="@{'/images/flags/pt_pt.svg'}" alt="icon" width="20" height="15"> Português (PT)</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'ro_RO')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="ro_RO"> <img th:src="@{'/images/flags/ro.svg'}" alt="icon" width="20" height="15"> Romanian</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'sk_SK')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="sk_SK"> <img th:src="@{'/images/flags/sk.svg'}" alt="icon" width="20" height="15"> Slovensky</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'sl_SI')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="sl_SI"> <img th:src="@{'/images/flags/si.svg'}" alt="icon" width="20" height="15"> Slovenian</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'sv_SE')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="sv_SE"> <img th:src="@{'/images/flags/se.svg'}" alt="icon" width="20" height="15"> Svenska</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'tr_TR')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="tr_TR"> <img th:src="@{'/images/flags/tr.svg'}" alt="icon" width="20" height="15"> Türkçe</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'ru_RU')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="ru_RU"> <img th:src="@{'/images/flags/ru.svg'}" alt="icon" width="20" height="15"> Русский</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'ko_KR')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="ko_KR"> <img th:src="@{'/images/flags/kr.svg'}" alt="icon" width="20" height="15"> 한국어</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'ja_JP')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="ja_JP"> <img th:src="@{'/images/flags/jp.svg'}" alt="icon" width="20" height="15"> 日本語</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'el_GR')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="el_GR"> <img th:src="@{'/images/flags/gr.svg'}" alt="icon" width="20" height="15"> Ελληνικά</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'hu_HU')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="hu_HU"> <img th:src="@{'/images/flags/hu.svg'}" alt="icon" width="20" height="15"> Hungarian</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'hi_IN')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="hi_IN"> <img th:src="@{'/images/flags/in.svg'}" alt="icon" width="20" height="15"> हिन्दी</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'sr_LATN_RS')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="sr_LATN_RS"> <img th:src="@{'/images/flags/rs.svg'}" alt="icon" width="20" height="15"> Srpski</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'uk_UA')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="uk_UA"> <img th:src="@{'/images/flags/ua.svg'}" alt="icon" width="20" height="15"> Українська</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'cs_CZ')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="cs_CZ"> <img th:src="@{'/images/flags/cz.svg'}" alt="icon" width="20" height="15"> Česky</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'hr_HR')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="hr_HR"> <img th:src="@{'/images/flags/hr.svg'}" alt="icon" width="20" height="15"> Hrvatski</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'no_NB')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="no_NB"> <img th:src="@{'/images/flags/no.svg'}" alt="icon" width="20" height="15"> Norsk</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'th_TH')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="th_TH"> <img th:src="@{'/images/flags/th.svg'}" alt="icon" width="20" height="15"> ไทย</a>
+                      <a th:if="${#lists.isEmpty(@languages) or #lists.contains(@languages, 'vi_VN')}" class="dropdown-item lang_dropdown-item" href="" data-bs-language-code="vi_VN"> <img th:src="@{'/images/flags/vn.svg'}" alt="icon" width="20" height="15"> Tiếng Việt</a>
 </th:block>