1 /*
2 * Copyright (c) 2002-2014, Mairie de Paris
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice
10 * and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice
13 * and the following disclaimer in the documentation and/or other materials
14 * provided with the distribution.
15 *
16 * 3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 *
32 * License 1.0
33 */
34 package fr.paris.lutece.portal.web.l10n;
35
36 import fr.paris.lutece.portal.service.datastore.DatastoreService;
37 import fr.paris.lutece.portal.service.util.AppLogService;
38
39 import java.util.Locale;
40
41 import javax.servlet.http.HttpServletRequest;
42 import javax.servlet.http.HttpSession;
43
44
45 /**
46 * LocaleService
47 */
48 public final class LocaleService
49 {
50 private static final String ATTRIBUTE_SELECTED_LOCALE = "LUTECE_ATTRIBUTE_USER_SELECTED_LOCALE";
51 private static final String DSKEY_LANGUAGE_DEFAULT = "portal.site.site_property.locale.default";
52 private static final String LANGUAGE_DEFAULT = "en";
53 private static Locale _locale;
54
55 /**
56 * Private constructor
57 */
58 private LocaleService( )
59 {
60 }
61
62 /**
63 * Set the locale selected by the user in the front office. The user may select a language
64 * without been authenticated.
65 * @param request The request
66 * @param locale The locale
67 */
68 public static void setUserSelectedLocale( HttpServletRequest request, Locale locale )
69 {
70 HttpSession session = request.getSession( true );
71 session.setAttribute( ATTRIBUTE_SELECTED_LOCALE, locale );
72 }
73
74 /**
75 * Get a Locale selected by the user in front office
76 * @param request The HTTP request
77 * @return The locale selected, or the default jvm locale if no locale has been selected
78 */
79 public static Locale getUserSelectedLocale( HttpServletRequest request )
80 {
81 Locale locale = LocaleService.getDefault( );
82 HttpSession session = request.getSession( );
83
84 if ( session != null )
85 {
86 Locale localeSession = (Locale) session.getAttribute( ATTRIBUTE_SELECTED_LOCALE );
87
88 if ( localeSession != null )
89 {
90 locale = localeSession;
91 }
92 }
93
94 return locale;
95 }
96
97 /**
98 * Return a Lutece defined default Locale
99 * @return The locale
100 */
101 public static Locale getDefault( )
102 {
103 if ( _locale == null )
104 {
105 String strCountry = DatastoreService.getInstanceDataValue( DSKEY_LANGUAGE_DEFAULT, LANGUAGE_DEFAULT );
106
107 for ( String strISOContry : Locale.getISOCountries( ) )
108 {
109 if ( strISOContry.equalsIgnoreCase( strCountry ) )
110 {
111 _locale = new Locale( strCountry );
112 AppLogService.info( "LocaleService : default locale set to : " + strCountry );
113
114 return _locale;
115 }
116 }
117
118 _locale = Locale.getDefault( );
119 AppLogService.error( "LocaleService : invalid defined locale " + strCountry + " - default set to " +
120 LANGUAGE_DEFAULT );
121 }
122
123 return _locale;
124 }
125 }