org.argeo.cms.ui/src/org/argeo/cms/ui/widgets/auth/LocaleChoice.java

   1 package org.argeo.cms.ui.widgets.auth;
   2
   3 import java.util.Collections;
   4 import java.util.List;
   5 import java.util.Locale;
   6
   7 import javax.security.auth.callback.LanguageCallback;
   8
   9 import org.argeo.cms.CmsException;
  10 import org.argeo.cms.LocaleUtils;
  11
  12 /** Choose in a list of locales. TODO: replace with {@link LanguageCallback} */
  13 public class LocaleChoice {
  14         private final List<Locale> locales;
  15
  16         private Integer selectedIndex = null;
  17         private final Integer defaultIndex;
  18
  19         public LocaleChoice(List<Locale> locales, Locale defaultLocale) {
  20                 Integer defaultIndex = null;
  21                 this.locales = Collections.unmodifiableList(locales);
  22                 for (int i = 0; i < locales.size(); i++)
  23                         if (locales.get(i).equals(defaultLocale))
  24                                 defaultIndex = i;
  25
  26                 // based on language only
  27                 if (defaultIndex == null)
  28                         for (int i = 0; i < locales.size(); i++)
  29                                 if (locales.get(i).getLanguage().equals(defaultLocale.getLanguage()))
  30                                         defaultIndex = i;
  31
  32                 if (defaultIndex == null)
  33                         throw new CmsException("Default locale " + defaultLocale + " is not in available locales " + locales);
  34                 this.defaultIndex = defaultIndex;
  35
  36                 this.selectedIndex = defaultIndex;
  37         }
  38
  39         /**
  40          * Convenience constructor based on a comma separated list of iso codes (en,
  41          * en_US, fr_CA, etc.). Default selection is default locale.
  42          */
  43         public LocaleChoice(String locales, Locale defaultLocale) {
  44                 this(LocaleUtils.asLocaleList(locales), defaultLocale);
  45         }
  46
  47         public String[] getSupportedLocalesLabels() {
  48                 String[] labels = new String[locales.size()];
  49                 for (int i = 0; i < locales.size(); i++) {
  50                         Locale locale = locales.get(i);
  51                         if (locale.getCountry().equals(""))
  52                                 labels[i] = locale.getDisplayLanguage(locale) + " [" + locale.getLanguage() + "]";
  53                         else
  54                                 labels[i] = locale.getDisplayLanguage(locale) + " (" + locale.getDisplayCountry(locale) + ") ["
  55                                                 + locale.getLanguage() + "_" + locale.getCountry() + "]";
  56
  57                 }
  58                 return labels;
  59         }
  60
  61         public Locale getSelectedLocale() {
  62                 if (selectedIndex == null)
  63                         return null;
  64                 return locales.get(selectedIndex);
  65         }
  66
  67         public void setSelectedIndex(Integer selectedIndex) {
  68                 this.selectedIndex = selectedIndex;
  69         }
  70
  71         public Integer getSelectedIndex() {
  72                 return selectedIndex;
  73         }
  74
  75         public Integer getDefaultIndex() {
  76                 return defaultIndex;
  77         }
  78
  79         public List<Locale> getLocales() {
  80                 return locales;
  81         }
  82
  83         public Locale getDefaultLocale() {
  84                 return locales.get(getDefaultIndex());
  85         }
  86 }