comparison: src/java/de/uapcore/lightpit/modules/LanguageModule.java
src/java/de/uapcore/lightpit/modules/LanguageModule.java
- changeset 29
- 27a0fdd7bca7
- parent 28
- cfc3d11884ad
- child 30
- fb30f7b78f9b
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| 28:cfc3d11884ad | 29:27a0fdd7bca7 |
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| 1 /* | |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
| 3 * | |
| 4 * Copyright 2018 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.LightPITModule; | |
| 32 import de.uapcore.lightpit.AbstractLightPITServlet; | |
| 33 import de.uapcore.lightpit.Constants; | |
| 34 import de.uapcore.lightpit.Functions; | |
| 35 import de.uapcore.lightpit.HttpMethod; | |
| 36 import javax.servlet.annotation.WebServlet; | |
| 37 import javax.servlet.http.HttpServletRequest; | |
| 38 import javax.servlet.http.HttpServletResponse; | |
| 39 import de.uapcore.lightpit.RequestMapping; | |
| 40 import de.uapcore.lightpit.ResponseType; | |
| 41 import java.util.ArrayList; | |
| 42 import java.util.IllformedLocaleException; | |
| 43 import java.util.List; | |
| 44 import java.util.Locale; | |
| 45 import java.util.Optional; | |
| 46 import javax.servlet.ServletException; | |
| 47 import org.slf4j.Logger; | |
| 48 import org.slf4j.LoggerFactory; | |
| 49 | |
| 50 | |
| 51 @LightPITModule( | |
| 52 bundleBaseName = "de.uapcore.lightpit.resources.localization.language", | |
| 53 modulePath = "language" | |
| 54 ) | |
| 55 @WebServlet( | |
| 56 name = "LanguageModule", | |
| 57 urlPatterns = "/language/*" | |
| 58 ) | |
| 59 public final class LanguageModule extends AbstractLightPITServlet { | |
| 60 | |
| 61 private static final Logger LOG = LoggerFactory.getLogger(LanguageModule.class); | |
| 62 | |
| 63 private final List<Locale> languages = new ArrayList<>(); | |
| 64 | |
| 65 @Override | |
| 66 public void init() throws ServletException { | |
| 67 super.init(); | |
| 68 | |
| 69 Optional<String[]> langs = Functions.availableLanguages(getServletContext()); | |
| 70 if (langs.isPresent()) { | |
| 71 for (String lang : langs.get()) { | |
| 72 try { | |
| 73 Locale locale = Locale.forLanguageTag(lang); | |
| 74 if (locale.getLanguage().isEmpty()) { | |
| 75 throw new IllformedLocaleException(); | |
| 76 } | |
| 77 languages.add(locale); | |
| 78 } catch (IllformedLocaleException ex) { | |
| 79 LOG.warn("Specified lanaguge {} in context parameter cannot be mapped to an existing locale - skipping.", lang); | |
| 80 } | |
| 81 } | |
| 82 | |
| 83 } else { | |
| 84 languages.add(Locale.ENGLISH); | |
| 85 LOG.warn("Context parameter 'available-languges' not found. Only english will be available."); | |
| 86 } | |
| 87 } | |
| 88 | |
| 89 @Override | |
| 90 public void destroy() { | |
| 91 super.destroy(); | |
| 92 languages.clear(); | |
| 93 } | |
| 94 | |
| 95 @RequestMapping(method = HttpMethod.GET) | |
| 96 public ResponseType handle(HttpServletRequest req, HttpServletResponse resp) { | |
| 97 | |
| 98 req.setAttribute("languages", languages); | |
| 99 req.setAttribute("browserLanguage", req.getLocale()); | |
| 100 | |
| 101 setStylesheet(req, "language"); | |
| 102 setDynamicFragment(req, "language"); | |
| 103 return ResponseType.HTML_FULL; | |
| 104 } | |
| 105 | |
| 106 @RequestMapping(method = HttpMethod.POST) | |
| 107 public ResponseType switchLanguage(HttpServletRequest req, HttpServletResponse resp) { | |
| 108 | |
| 109 Optional<Locale> chosenLanguage = Optional.ofNullable(req.getParameter("language")) | |
| 110 .map(Locale::forLanguageTag) | |
| 111 .filter((l) -> !l.getLanguage().isEmpty()); | |
| 112 | |
| 113 chosenLanguage.ifPresent((l) -> req.getSession().setAttribute(Constants.SESSION_ATTR_LANGUAGE, l)); | |
| 114 chosenLanguage.ifPresent(resp::setLocale); | |
| 115 | |
| 116 return handle(req, resp); | |
| 117 } | |
| 118 } |
