src/main/java/de/uapcore/lightpit/modules/LanguageModule.java

Sat, 23 May 2020 14:13:09 +0200

author
Mike Becker <universe@uap-core.de>
date
Sat, 23 May 2020 14:13:09 +0200
changeset 79
f64255a88d66
parent 78
bb4c52bf3439
child 86
0a658e53177c
permissions
-rw-r--r--

bloat removal 3/3 - LightPITModule annotation and ModuleManager

universe@7 1 /*
universe@7 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
universe@34 3 *
universe@24 4 * Copyright 2018 Mike Becker. All rights reserved.
universe@34 5 *
universe@7 6 * Redistribution and use in source and binary forms, with or without
universe@7 7 * modification, are permitted provided that the following conditions are met:
universe@7 8 *
universe@7 9 * 1. Redistributions of source code must retain the above copyright
universe@7 10 * notice, this list of conditions and the following disclaimer.
universe@7 11 *
universe@7 12 * 2. Redistributions in binary form must reproduce the above copyright
universe@7 13 * notice, this list of conditions and the following disclaimer in the
universe@7 14 * documentation and/or other materials provided with the distribution.
universe@7 15 *
universe@7 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
universe@7 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
universe@7 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
universe@7 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
universe@7 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
universe@7 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
universe@7 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
universe@7 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
universe@7 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
universe@7 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
universe@7 26 * POSSIBILITY OF SUCH DAMAGE.
universe@34 27 *
universe@7 28 */
universe@7 29 package de.uapcore.lightpit.modules;
universe@7 30
universe@31 31 import de.uapcore.lightpit.*;
universe@31 32 import org.slf4j.Logger;
universe@31 33 import org.slf4j.LoggerFactory;
universe@31 34
universe@31 35 import javax.servlet.ServletException;
universe@7 36 import javax.servlet.annotation.WebServlet;
universe@11 37 import javax.servlet.http.HttpServletRequest;
universe@11 38 import javax.servlet.http.HttpServletResponse;
universe@31 39 import java.util.*;
universe@7 40
universe@7 41 @WebServlet(
universe@11 42 name = "LanguageModule",
universe@11 43 urlPatterns = "/language/*"
universe@7 44 )
universe@11 45 public final class LanguageModule extends AbstractLightPITServlet {
universe@34 46
universe@13 47 private static final Logger LOG = LoggerFactory.getLogger(LanguageModule.class);
universe@34 48
universe@15 49 private final List<Locale> languages = new ArrayList<>();
universe@13 50
universe@13 51 @Override
universe@78 52 protected String getResourceBundleName() {
universe@78 53 return "localization.language";
universe@78 54 }
universe@78 55
universe@78 56 @Override
universe@13 57 public void init() throws ServletException {
universe@13 58 super.init();
universe@34 59
universe@13 60 Optional<String[]> langs = Functions.availableLanguages(getServletContext());
universe@13 61 if (langs.isPresent()) {
universe@13 62 for (String lang : langs.get()) {
universe@13 63 try {
universe@13 64 Locale locale = Locale.forLanguageTag(lang);
universe@13 65 if (locale.getLanguage().isEmpty()) {
universe@13 66 throw new IllformedLocaleException();
universe@13 67 }
universe@13 68 languages.add(locale);
universe@13 69 } catch (IllformedLocaleException ex) {
universe@39 70 LOG.warn("Specified language {} in context parameter cannot be mapped to an existing locale - skipping.", lang);
universe@13 71 }
universe@13 72 }
universe@34 73
universe@13 74 } else {
universe@13 75 languages.add(Locale.ENGLISH);
universe@39 76 LOG.warn("Context parameter 'available-languages' not found. Only english will be available.");
universe@13 77 }
universe@13 78 }
universe@15 79
universe@15 80 @Override
universe@15 81 public void destroy() {
universe@15 82 super.destroy();
universe@15 83 languages.clear();
universe@15 84 }
universe@34 85
universe@11 86 @RequestMapping(method = HttpMethod.GET)
universe@42 87 public ResponseType handle(HttpServletRequest req) {
universe@13 88
universe@13 89 req.setAttribute("languages", languages);
universe@13 90 req.setAttribute("browserLanguage", req.getLocale());
universe@34 91
universe@13 92 setStylesheet(req, "language");
universe@74 93 setContentPage(req, "language");
universe@43 94 return ResponseType.HTML;
universe@11 95 }
universe@34 96
universe@15 97 @RequestMapping(method = HttpMethod.POST)
universe@42 98 public ResponseType switchLanguage(HttpServletRequest req, HttpServletResponse resp) {
universe@34 99
universe@15 100 Optional<Locale> chosenLanguage = Optional.ofNullable(req.getParameter("language"))
universe@15 101 .map(Locale::forLanguageTag)
universe@15 102 .filter((l) -> !l.getLanguage().isEmpty());
universe@34 103
universe@15 104 chosenLanguage.ifPresent((l) -> req.getSession().setAttribute(Constants.SESSION_ATTR_LANGUAGE, l));
universe@15 105 chosenLanguage.ifPresent(resp::setLocale);
universe@34 106
universe@42 107 return handle(req);
universe@15 108 }
universe@7 109 }

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