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Java > Open Source Codes > org > mdarad > framework > util > struts > StrutsLocalizationUtils


1 /*
2     Mdarad-Toolobox is a collection of tools for Architected RAD
3     (Rapid Application Development) based on an MDA approach.
4     The toolbox contains frameworks and generators for many environments
5     (JAVA, J2EE, Hibernate, .NET, C++, etc.) which allow to generate
6     applications from a design Model
7     Copyright (C) 2004-2005 Elapse Technologies Inc.
8
9     This library is free software; you can redistribute it and/or
10     modify it under the terms of the GNU General Public
11     License as published by the Free Software Foundation; either
12     version 2.1 of the License, or (at your option) any later version.
13
14     This library is distributed in the hope that it will be useful,
15     but WITHOUT ANY WARRANTY; without even the implied warranty of
16     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17     General Public License for more details.
18
19     You should have received a copy of the GNU General Public
20     License along with this library; if not, write to the Free Software
21     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23
24 package org.mdarad.framework.util.struts;
25
26 import org.apache.struts.Globals;
27 import org.dataisland.primitives.bean.LocalizationContext;
28 import org.dataisland.primitives.util.Keys;
29 import org.dataisland.primitives.util.LocalizationUtils;
30
31 import javax.servlet.http.HttpServletRequest JavaDoc;
32 import java.util.ArrayList JavaDoc;
33 import java.util.Collections JavaDoc;
34 import java.util.Enumeration JavaDoc;
35 import java.util.Iterator JavaDoc;
36 import java.util.List JavaDoc;
37 import java.util.Locale JavaDoc;
38 import java.util.SortedMap JavaDoc;
39 import java.util.TreeMap JavaDoc;
40
41
42 public class StrutsLocalizationUtils {
43
44     protected static LocalizationContext createLocalizationContext(HttpServletRequest JavaDoc httpServletRequest) {
45
46         LocalizationContext localizationContext = new LocalizationContext();
47
48         List JavaDoc localeList = new ArrayList JavaDoc();
49
50         Locale JavaDoc locale = (Locale JavaDoc) httpServletRequest.getSession().getAttribute(Globals.LOCALE_KEY);
51         localeList.add(locale);
52
53         Enumeration JavaDoc localeEnumeration = httpServletRequest.getLocales();
54         while (localeEnumeration.hasMoreElements()) {
55             Locale JavaDoc requestLocale = (Locale JavaDoc) localeEnumeration.nextElement();
56             if (!localeList.contains(requestLocale)) {
57                 localeList.add(requestLocale);
58             }
59         }
60
61         localizationContext.setLocales(localeList);
62
63         return localizationContext;
64     }
65
66     public static void cacheLocalizationContext(HttpServletRequest JavaDoc httpServletRequest, LocalizationContext localizationContext) {
67         httpServletRequest.getSession().setAttribute(org.dataisland.primitives.util.Keys.LOCALIZATIONCONTEXT_KEY, localizationContext);
68     }
69
70     /**
71      * @param httpServletRequest
72      * @return
73      */
74     public static LocalizationContext getLocalizationContext(HttpServletRequest JavaDoc httpServletRequest) {
75         LocalizationContext localizationContext = (LocalizationContext) httpServletRequest.getSession().getAttribute(Keys.LOCALIZATIONCONTEXT_KEY);
76         if (localizationContext == null) {
77             localizationContext = createLocalizationContext(httpServletRequest);
78             cacheLocalizationContext(httpServletRequest, localizationContext);
79         }
80
81         return localizationContext;
82     }
83
84     public static LocalizationContext getCompositeLocalizationContext(HttpServletRequest JavaDoc httpServletRequest, String JavaDoc localizationContextHumanReadableKey) throws org.dataisland.primitives.exception.LocalizationException {
85         LocalizationContext output = (LocalizationContext) httpServletRequest.getAttribute(org.dataisland.primitives.util.Keys.LOCALIZATIONCONTEXT_KEY);
86         if (output == null) {
87             org.dataisland.primitives.bean.LocalizationContext clientLocalizationContext = getLocalizationContext(httpServletRequest);
88             output = org.mdarad.framework.facade.LocalizationFacade.getInstance().buildLocalizationContext(clientLocalizationContext, localizationContextHumanReadableKey);
89             httpServletRequest.setAttribute(org.dataisland.primitives.util.Keys.LOCALIZATIONCONTEXT_KEY, output);
90         }
91         return output;
92     }
93
94
95     static public void processLocale(HttpServletRequest JavaDoc httpServletRequest, String JavaDoc localizationContextHumanReadableKey) throws org.dataisland.primitives.exception.LocalizationException {
96         LocalizationContext clientLocalizationContext = getLocalizationContext(httpServletRequest);
97         LocalizationContext compositeLocalizationContext = org.mdarad.framework.facade.LocalizationFacade.getInstance().buildLocalizationContext(clientLocalizationContext, localizationContextHumanReadableKey);
98         List JavaDoc locales = compositeLocalizationContext.getLocales();
99
100         Locale JavaDoc locale = (Locale JavaDoc) locales.get(0);
101         httpServletRequest.getSession().setAttribute(Globals.LOCALE_KEY, locale);
102
103         // Put available locales in request
104 List JavaDoc sortedLocales = new ArrayList JavaDoc(locales);
105         Collections.sort(sortedLocales, LocalizationUtils.getDefaultLocaleComparator());
106
107         httpServletRequest.setAttribute(Keys.LOCALES_KEY, sortedLocales);
108     }
109
110     public static SortedMap JavaDoc getEmptyStringKeyedMap(List JavaDoc locales) {
111         SortedMap JavaDoc lOutputMap = new TreeMap JavaDoc(org.dataisland.primitives.util.LocalizationUtils.getDefaultObjectComparator());
112         Iterator JavaDoc localeIterator = locales.iterator();
113
114         while (localeIterator.hasNext()) {
115             Locale JavaDoc localeKey = (Locale JavaDoc) localeIterator.next();
116             lOutputMap.put(localeKey.toString(), "");
117         }
118
119         return lOutputMap;
120     }
121 }
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