Sat, 31 Oct 2020 09:15:57 +0100
fixes default values for version and component form
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;
31 import de.uapcore.lightpit.*;
32 import de.uapcore.lightpit.viewmodel.LanguageView;
33 import org.slf4j.Logger;
34 import org.slf4j.LoggerFactory;
36 import javax.servlet.ServletException;
37 import javax.servlet.annotation.WebServlet;
38 import javax.servlet.http.HttpServletRequest;
39 import javax.servlet.http.HttpServletResponse;
40 import java.util.*;
42 @WebServlet(
43 name = "LanguageModule",
44 urlPatterns = "/language/*"
45 )
46 public final class LanguageModule extends AbstractLightPITServlet {
48 private static final Logger LOG = LoggerFactory.getLogger(LanguageModule.class);
50 private final List<Locale> languages = new ArrayList<>();
52 @Override
53 protected String getResourceBundleName() {
54 return "localization.language";
55 }
57 @Override
58 public void init() throws ServletException {
59 super.init();
61 Optional<String[]> langs = Functions.availableLanguages(getServletContext());
62 if (langs.isPresent()) {
63 for (String lang : langs.get()) {
64 try {
65 Locale locale = Locale.forLanguageTag(lang);
66 if (locale.getLanguage().isEmpty()) {
67 throw new IllformedLocaleException();
68 }
69 languages.add(locale);
70 } catch (IllformedLocaleException ex) {
71 LOG.warn("Specified language {} in context parameter cannot be mapped to an existing locale - skipping.", lang);
72 }
73 }
75 } else {
76 languages.add(Locale.ENGLISH);
77 LOG.warn("Context parameter 'available-languages' not found. Only english will be available.");
78 }
79 }
81 @Override
82 public void destroy() {
83 super.destroy();
84 languages.clear();
85 }
87 @RequestMapping(method = HttpMethod.GET)
88 public ResponseType handle(HttpServletRequest req) {
90 final var viewModel = new LanguageView();
91 viewModel.setLanguages(languages);
92 viewModel.setBrowserLanguage(req.getLocale());
93 viewModel.setCurrentLanguage((Locale)req.getSession().getAttribute(Constants.SESSION_ATTR_LANGUAGE));
95 setViewModel(req, viewModel);
96 setStylesheet(req, "language");
97 setContentPage(req, "language");
98 return ResponseType.HTML;
99 }
101 @RequestMapping(method = HttpMethod.POST)
102 public ResponseType switchLanguage(HttpServletRequest req, HttpServletResponse resp) {
104 Optional<Locale> chosenLanguage = Optional.ofNullable(req.getParameter("language"))
105 .map(Locale::forLanguageTag)
106 .filter((l) -> !l.getLanguage().isEmpty());
108 chosenLanguage.ifPresent((l) -> req.getSession().setAttribute(Constants.SESSION_ATTR_LANGUAGE, l));
109 chosenLanguage.ifPresent(resp::setLocale);
111 return handle(req);
112 }
113 }