--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/main/java/de/uapcore/lightpit/modules/LanguageModule.java Sat May 09 14:26:31 2020 +0200
@@ -0,0 +1,118 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2018 Mike Becker. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+package de.uapcore.lightpit.modules;
+
+import de.uapcore.lightpit.LightPITModule;
+import de.uapcore.lightpit.AbstractLightPITServlet;
+import de.uapcore.lightpit.Constants;
+import de.uapcore.lightpit.Functions;
+import de.uapcore.lightpit.HttpMethod;
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import de.uapcore.lightpit.RequestMapping;
+import de.uapcore.lightpit.ResponseType;
+import java.util.ArrayList;
+import java.util.IllformedLocaleException;
+import java.util.List;
+import java.util.Locale;
+import java.util.Optional;
+import javax.servlet.ServletException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+@LightPITModule(
+ bundleBaseName = "localization.language",
+ modulePath = "language"
+)
+@WebServlet(
+ name = "LanguageModule",
+ urlPatterns = "/language/*"
+)
+public final class LanguageModule extends AbstractLightPITServlet {
+
+ private static final Logger LOG = LoggerFactory.getLogger(LanguageModule.class);
+
+ private final List<Locale> languages = new ArrayList<>();
+
+ @Override
+ public void init() throws ServletException {
+ super.init();
+
+ Optional<String[]> langs = Functions.availableLanguages(getServletContext());
+ if (langs.isPresent()) {
+ for (String lang : langs.get()) {
+ try {
+ Locale locale = Locale.forLanguageTag(lang);
+ if (locale.getLanguage().isEmpty()) {
+ throw new IllformedLocaleException();
+ }
+ languages.add(locale);
+ } catch (IllformedLocaleException ex) {
+ LOG.warn("Specified lanaguge {} in context parameter cannot be mapped to an existing locale - skipping.", lang);
+ }
+ }
+
+ } else {
+ languages.add(Locale.ENGLISH);
+ LOG.warn("Context parameter 'available-languges' not found. Only english will be available.");
+ }
+ }
+
+ @Override
+ public void destroy() {
+ super.destroy();
+ languages.clear();
+ }
+
+ @RequestMapping(method = HttpMethod.GET)
+ public ResponseType handle(HttpServletRequest req, HttpServletResponse resp) {
+
+ req.setAttribute("languages", languages);
+ req.setAttribute("browserLanguage", req.getLocale());
+
+ setStylesheet(req, "language");
+ setDynamicFragment(req, "language");
+ return ResponseType.HTML_FULL;
+ }
+
+ @RequestMapping(method = HttpMethod.POST)
+ public ResponseType switchLanguage(HttpServletRequest req, HttpServletResponse resp) {
+
+ Optional<Locale> chosenLanguage = Optional.ofNullable(req.getParameter("language"))
+ .map(Locale::forLanguageTag)
+ .filter((l) -> !l.getLanguage().isEmpty());
+
+ chosenLanguage.ifPresent((l) -> req.getSession().setAttribute(Constants.SESSION_ATTR_LANGUAGE, l));
+ chosenLanguage.ifPresent(resp::setLocale);
+
+ return handle(req, resp);
+ }
+}