org.argeo.cms/src/org/argeo/cms/i18n/LocaleUtils.java

   1 package org.argeo.cms.i18n;
   2
   3 import java.util.ArrayList;
   4 import java.util.List;
   5 import java.util.Locale;
   6 import java.util.ResourceBundle;
   7
   8 import org.argeo.eclipse.ui.specific.UiContext;
   9
  10 /** Utilities simplifying the development of localization enums. */
  11 public class LocaleUtils {
  12         public static Object local(Enum<?> en) {
  13                 return local(en, getCurrentLocale(), "/OSGI-INF/l10n/bundle");
  14         }
  15
  16         public static Object local(Enum<?> en, Locale locale) {
  17                 return local(en, locale, "/OSGI-INF/l10n/bundle");
  18         }
  19
  20         public static Object local(Enum<?> en, Locale locale, String resource) {
  21                 return local(en, locale, resource, en.getClass().getClassLoader());
  22         }
  23
  24         public static Object local(Enum<?> en, Locale locale, String resource,
  25                         ClassLoader classLoader) {
  26                 ResourceBundle rb = ResourceBundle.getBundle(resource, locale,
  27                                 classLoader);
  28                 return rb.getString(en.name());
  29         }
  30
  31         public static String lead(String raw, Locale locale) {
  32                 return raw.substring(0, 1).toUpperCase(locale) + raw.substring(1);
  33         }
  34
  35         public static String lead(Localized localized) {
  36                 return lead(localized, getCurrentLocale());
  37         }
  38
  39         public static String lead(Localized localized, Locale locale) {
  40                 return lead(localized.local(locale).toString(), locale);
  41         }
  42
  43         static Locale getCurrentLocale() {
  44                 return UiContext.getLocale();
  45         }
  46
  47         /** Returns null if argument is null. */
  48         public static List<Locale> asLocaleList(Object locales) {
  49                 if (locales == null)
  50                         return null;
  51                 ArrayList<Locale> availableLocales = new ArrayList<Locale>();
  52                 String[] codes = locales.toString().split(",");
  53                 for (int i = 0; i < codes.length; i++) {
  54                         String code = codes[i];
  55                         // variant not supported
  56                         int indexUnd = code.indexOf("_");
  57                         Locale locale;
  58                         if (indexUnd > 0) {
  59                                 String language = code.substring(0, indexUnd);
  60                                 String country = code.substring(indexUnd + 1);
  61                                 locale = new Locale(language, country);
  62                         } else {
  63                                 locale = new Locale(code);
  64                         }
  65                         availableLocales.add(locale);
  66                 }
  67                 return availableLocales;
  68         }
  69 }