# HG changeset patch
# User Mike Becker <universe@uap-core.de>
# Date 1514313931 -3600
# Node ID bb594abac7967575634bcd2161aa1f86979d7007
# Parent  2b270c714678dc3b2aa52c1163b73036e14ce6db
language selector completed

diff -r 2b270c714678 -r bb594abac796 src/java/de/uapcore/lightpit/AbstractLightPITServlet.java
--- a/src/java/de/uapcore/lightpit/AbstractLightPITServlet.java	Tue Dec 26 19:18:32 2017 +0100
+++ b/src/java/de/uapcore/lightpit/AbstractLightPITServlet.java	Tue Dec 26 19:45:31 2017 +0100
@@ -243,7 +243,9 @@
             session.setAttribute(Constants.SESSION_ATTR_LANGUAGE, sessionLocale);
             LOG.debug("Settng language for new session {}: {}", session.getId(), sessionLocale.getDisplayLanguage());
         } else {
-            LOG.trace("Continuing session {} with language {}", session.getId(), session.getAttribute(Constants.SESSION_ATTR_LANGUAGE));
+            Locale sessionLocale = (Locale) session.getAttribute(Constants.SESSION_ATTR_LANGUAGE);
+            resp.setLocale(sessionLocale);
+            LOG.trace("Continuing session {} with language {}", session.getId(), sessionLocale);
         }
         
         req.setAttribute(Constants.REQ_ATTR_PATH, Functions.fullPath(req));
diff -r 2b270c714678 -r bb594abac796 src/java/de/uapcore/lightpit/modules/LanguageModule.java
--- a/src/java/de/uapcore/lightpit/modules/LanguageModule.java	Tue Dec 26 19:18:32 2017 +0100
+++ b/src/java/de/uapcore/lightpit/modules/LanguageModule.java	Tue Dec 26 19:45:31 2017 +0100
@@ -30,6 +30,7 @@
 
 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;
@@ -59,7 +60,7 @@
     
     private static final Logger LOG = LoggerFactory.getLogger(LanguageModule.class);
     
-    private List<Locale> languages = new ArrayList<>();
+    private final List<Locale> languages = new ArrayList<>();
 
     @Override
     public void init() throws ServletException {
@@ -84,6 +85,12 @@
             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) {
@@ -95,4 +102,17 @@
         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);
+    }
 }
diff -r 2b270c714678 -r bb594abac796 src/java/de/uapcore/lightpit/resources/localization/language.properties
--- a/src/java/de/uapcore/lightpit/resources/localization/language.properties	Tue Dec 26 19:18:32 2017 +0100
+++ b/src/java/de/uapcore/lightpit/resources/localization/language.properties	Tue Dec 26 19:45:31 2017 +0100
@@ -24,3 +24,4 @@
 menuLabel = Languages
 submit = Switch language
 browserLanguage = Browser language
+browserLanguageNotAvailable = Browser language not available.
diff -r 2b270c714678 -r bb594abac796 src/java/de/uapcore/lightpit/resources/localization/language_de.properties
--- a/src/java/de/uapcore/lightpit/resources/localization/language_de.properties	Tue Dec 26 19:18:32 2017 +0100
+++ b/src/java/de/uapcore/lightpit/resources/localization/language_de.properties	Tue Dec 26 19:45:31 2017 +0100
@@ -24,3 +24,4 @@
 menuLabel = Sprache
 submit = Sprache ausw\u00e4hlen
 browserLanguage = Browsersprache
+browserLanguageNotAvailable = Browsersprache nicht verf\u00fcgbar.
diff -r 2b270c714678 -r bb594abac796 web/WEB-INF/dynamic_fragments/language.jsp
--- a/web/WEB-INF/dynamic_fragments/language.jsp	Tue Dec 26 19:18:32 2017 +0100
+++ b/web/WEB-INF/dynamic_fragments/language.jsp	Tue Dec 26 19:45:31 2017 +0100
@@ -31,16 +31,17 @@
 
 <c:set scope="page" var="currentLanguage" value="${sessionScope[Constants.SESSION_ATTR_LANGUAGE]}" />
 
-<fmt:bundle basename="${requestScope[Constants.REQ_ATTR_MODULE_INFO].bundleBaseName}">
 <form method="POST"id="lang-selector">
     <c:forEach items="${languages}" var="l">
         <label>
             <input type="radio" name="language" value="${l.language}"
                    <c:if test="${l.language eq currentLanguage.language}">checked</c:if>/>
             ${l.displayLanguage}
-            (${l.getDisplayLanguage(currentLanguage)}<c:if test="${not empty browserLanguage and l.language eq browserLanguage.language}">&nbsp;-&nbsp;<fmt:message key="browserLanguage"/></c:if>)
+            (${l.getDisplayLanguage(currentLanguage)}<c:if test="${not empty browserLanguage and l.language eq browserLanguage.language}"><c:set var="browserLanguagePresent" value="true"/>&nbsp;-&nbsp;<fmt:message key="browserLanguage"/></c:if>)
         </label>
     </c:forEach>
+    <c:if test="${not browserLanguagePresent}">
+        <span class="blNA"><fmt:message key="browserLanguageNotAvailable" /></span>
+    </c:if>
     <input type="submit" value="<fmt:message key="submit" />"/>
 </form>
-</fmt:bundle>
diff -r 2b270c714678 -r bb594abac796 web/WEB-INF/jsp/full.jsp
--- a/web/WEB-INF/jsp/full.jsp	Tue Dec 26 19:18:32 2017 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,78 +0,0 @@
-<%-- 
-DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
-
-Copyright 2017 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. 
---%>
-<%@page contentType="text/html" pageEncoding="UTF-8" trimDirectiveWhitespaces="true" %>
-<%@page import="de.uapcore.lightpit.Constants" %>
-<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
-<%@taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
-<%@taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
-
-<%-- Define an alias for the main menu --%>
-<c:set scope="page" var="mainMenu" value="${requestScope[Constants.REQ_ATTR_MENU]}"/>
-
-<%-- Define an alias for the module info --%>
-<c:set scope="page" var="moduleInfo" value="${requestScope[Constants.REQ_ATTR_MODULE_INFO]}"/>
-
-<!DOCTYPE html>
-<html>
-    <head>
-        <base href="${pageContext.request.scheme}://${pageContext.request.serverName}:${pageContext.request.serverPort}${pageContext.request.contextPath}/">
-        <title>LightPIT -
-            <fmt:bundle basename="${moduleInfo.bundleBaseName}">
-                <fmt:message key="${moduleInfo.titleKey}" />
-            </fmt:bundle>
-        </title>
-        <meta charset="UTF-8">
-        <link rel="stylesheet" href="lightpit.css" type="text/css">
-    </head>
-    <body>
-        <div id="mainMenu">
-            <c:forEach var="menu" items="${mainMenu}">
-                <div class="menuEntry"
-                     <c:if test="${requestScope[Constants.REQ_ATTR_MODULE_CLASSNAME] eq menu.moduleClassName}">
-                         data-active
-                     </c:if>
-                >
-                    <a href="${menu.pathName}">
-                    <fmt:bundle basename="${menu.resourceKey.bundle}">
-                        <fmt:message key="${menu.resourceKey.key}" />
-                    </fmt:bundle>
-                    </a>
-                </div>
-            </c:forEach>
-            
-        </div>
-        <div id="subMenu">
-            
-        </div>
-        <div id="content-area">
-            <%-- Resource keys should be rooted in the specific bundle for this module. --%>
-            <fmt:bundle basename="${moduleInfo.bundleBaseName}">
-                TODO: load fragment
-            </fmt:bundle>
-        </div>
-    </body>
-</html>
diff -r 2b270c714678 -r bb594abac796 web/WEB-INF/jsp/html_full.jsp
--- a/web/WEB-INF/jsp/html_full.jsp	Tue Dec 26 19:18:32 2017 +0100
+++ b/web/WEB-INF/jsp/html_full.jsp	Tue Dec 26 19:45:31 2017 +0100
@@ -42,6 +42,11 @@
 <%-- Define an alias for the module info --%>
 <c:set scope="page" var="moduleInfo" value="${requestScope[Constants.REQ_ATTR_MODULE_INFO]}"/>
 
+<%-- Apply the session locale (should always be present, but check nevertheless) --%>
+<c:if test="${not empty sessionScope[Constants.SESSION_ATTR_LANGUAGE]}">
+<fmt:setLocale scope="request" value="${sessionScope[Constants.SESSION_ATTR_LANGUAGE]}"/>
+</c:if>
+
 <!DOCTYPE html>
 <html>
     <head>
@@ -78,7 +83,8 @@
         </div>
         <div id="content-area">
             <c:if test="${not empty fragment}">
-            <c:import url="${fragment}" />
+                <fmt:setBundle scope="request" basename="${moduleInfo.bundleBaseName}"/>
+                <c:import url="${fragment}" />
             </c:if>
         </div>
     </body>
diff -r 2b270c714678 -r bb594abac796 web/language.css
--- a/web/language.css	Tue Dec 26 19:18:32 2017 +0100
+++ b/web/language.css	Tue Dec 26 19:45:31 2017 +0100
@@ -37,3 +37,10 @@
 input {
     margin: .5em;
 }
+
+span.blNA {
+    margin: .5em;
+    color: red;
+    font-style: italic;
+    font-size: smaller;
+}