comparison: src/main/java/de/uapcore/lightpit/modules/LanguageModule.java
src/main/java/de/uapcore/lightpit/modules/LanguageModule.java
- changeset 184
- e8eecee6aadf
- parent 180
- 009700915269
equal
deleted
inserted
replaced
| 183:61669abf277f | 184:e8eecee6aadf |
|---|---|
| 1 /* | |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
| 3 * | |
| 4 * Copyright 2021 Mike Becker. All rights reserved. | |
| 5 * | |
| 6 * Redistribution and use in source and binary forms, with or without | |
| 7 * modification, are permitted provided that the following conditions are met: | |
| 8 * | |
| 9 * 1. Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * | |
| 12 * 2. Redistributions in binary form must reproduce the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer in the | |
| 14 * documentation and/or other materials provided with the distribution. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
| 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 26 * POSSIBILITY OF SUCH DAMAGE. | |
| 27 * | |
| 28 */ | |
| 29 package de.uapcore.lightpit.modules; | |
| 30 | |
| 31 import de.uapcore.lightpit.AbstractServlet; | |
| 32 import de.uapcore.lightpit.Constants; | |
| 33 import de.uapcore.lightpit.HttpMethod; | |
| 34 import de.uapcore.lightpit.RequestMapping; | |
| 35 import de.uapcore.lightpit.viewmodel.LanguageView; | |
| 36 import org.slf4j.Logger; | |
| 37 import org.slf4j.LoggerFactory; | |
| 38 | |
| 39 import javax.servlet.ServletException; | |
| 40 import javax.servlet.annotation.WebServlet; | |
| 41 import javax.servlet.http.HttpServletRequest; | |
| 42 import javax.servlet.http.HttpServletResponse; | |
| 43 import java.io.IOException; | |
| 44 import java.util.*; | |
| 45 | |
| 46 @WebServlet( | |
| 47 name = "LanguageModule", | |
| 48 urlPatterns = "/language/*" | |
| 49 ) | |
| 50 public final class LanguageModule extends AbstractServlet { | |
| 51 | |
| 52 private static final Logger LOG = LoggerFactory.getLogger(LanguageModule.class); | |
| 53 | |
| 54 private final List<Locale> languages = new ArrayList<>(); | |
| 55 | |
| 56 @Override | |
| 57 public void init() throws ServletException { | |
| 58 super.init(); | |
| 59 | |
| 60 Optional<String[]> langs = availableLanguages(); | |
| 61 if (langs.isPresent()) { | |
| 62 for (String lang : langs.get()) { | |
| 63 try { | |
| 64 Locale locale = Locale.forLanguageTag(lang); | |
| 65 if (locale.getLanguage().isEmpty()) { | |
| 66 throw new IllformedLocaleException(); | |
| 67 } | |
| 68 languages.add(locale); | |
| 69 } catch (IllformedLocaleException ex) { | |
| 70 LOG.warn("Specified language {} in context parameter cannot be mapped to an existing locale - skipping.", lang); | |
| 71 } | |
| 72 } | |
| 73 | |
| 74 } else { | |
| 75 languages.add(Locale.ENGLISH); | |
| 76 LOG.warn("Context parameter 'available-languages' not found. Only english will be available."); | |
| 77 } | |
| 78 } | |
| 79 | |
| 80 @Override | |
| 81 public void destroy() { | |
| 82 super.destroy(); | |
| 83 languages.clear(); | |
| 84 } | |
| 85 | |
| 86 @RequestMapping(method = HttpMethod.GET) | |
| 87 public void handle(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { | |
| 88 | |
| 89 final var viewModel = new LanguageView(); | |
| 90 viewModel.setLanguages(languages); | |
| 91 viewModel.setBrowserLanguage(req.getLocale()); | |
| 92 viewModel.setCurrentLanguage((Locale)req.getSession().getAttribute(Constants.SESSION_ATTR_LANGUAGE)); | |
| 93 | |
| 94 setViewModel(req, viewModel); | |
| 95 setStylesheet(req, "language"); | |
| 96 setContentPage(req, "language"); | |
| 97 | |
| 98 renderSite(req, resp); | |
| 99 } | |
| 100 | |
| 101 @RequestMapping(method = HttpMethod.POST) | |
| 102 public void switchLanguage(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { | |
| 103 | |
| 104 Optional<Locale> chosenLanguage = Optional.ofNullable(req.getParameter("language")) | |
| 105 .map(Locale::forLanguageTag) | |
| 106 .filter((l) -> !l.getLanguage().isEmpty()); | |
| 107 | |
| 108 chosenLanguage.ifPresent((l) -> req.getSession().setAttribute(Constants.SESSION_ATTR_LANGUAGE, l)); | |
| 109 chosenLanguage.ifPresent(resp::setLocale); | |
| 110 | |
| 111 handle(req, resp); | |
| 112 } | |
| 113 } |
