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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package sun.util.locale.provider;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.text.spi.DateFormatProvider;
import java.util.Calendar;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.Set;
/**
* Concrete implementation of the {@link java.text.spi.DateFormatProvider
* DateFormatProvider} class for the JRE LocaleProviderAdapter.
*
* @author Naoto Sato
* @author Masayoshi Okutsu
*/
public class DateFormatProviderImpl extends DateFormatProvider implements AvailableLanguageTags {
private final LocaleProviderAdapter.Type type;
private final Set<String> langtags;
public DateFormatProviderImpl(LocaleProviderAdapter.Type type, Set<String> langtags) {
this.type = type;
this.langtags = langtags;
}
/**
* Returns an array of all locales for which this locale service provider
* can provide localized objects or names.
*
* @return An array of all locales for which this locale service provider
* can provide localized objects or names.
*/
@Override
public Locale[] getAvailableLocales() {
return LocaleProviderAdapter.toLocaleArray(langtags);
}
@Override
public boolean isSupportedLocale(Locale locale) {
return LocaleProviderAdapter.isSupportedLocale(locale, type, langtags);
}
/**
* Returns a new <code>DateFormat</code> instance which formats time
* with the given formatting style for the specified locale.
* @param style the given formatting style. Either one of
* {@link java.text.DateFormat#SHORT DateFormat.SHORT},
* {@link java.text.DateFormat#MEDIUM DateFormat.MEDIUM},
* {@link java.text.DateFormat#LONG DateFormat.LONG}, or
* {@link java.text.DateFormat#FULL DateFormat.FULL}.
* @param locale the desired locale.
* @exception IllegalArgumentException if <code>style</code> is invalid,
* or if <code>locale</code> isn't
* one of the locales returned from
* {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()
* getAvailableLocales()}.
* @exception NullPointerException if <code>locale</code> is null
* @return a time formatter.
* @see java.text.DateFormat#getTimeInstance(int, java.util.Locale)
*/
@Override
public DateFormat getTimeInstance(int style, Locale locale) {
return getInstance(-1, style, locale);
}
/**
* Returns a new <code>DateFormat</code> instance which formats date
* with the given formatting style for the specified locale.
* @param style the given formatting style. Either one of
* {@link java.text.DateFormat#SHORT DateFormat.SHORT},
* {@link java.text.DateFormat#MEDIUM DateFormat.MEDIUM},
* {@link java.text.DateFormat#LONG DateFormat.LONG}, or
* {@link java.text.DateFormat#FULL DateFormat.FULL}.
* @param locale the desired locale.
* @exception IllegalArgumentException if <code>style</code> is invalid,
* or if <code>locale</code> isn't
* one of the locales returned from
* {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()
* getAvailableLocales()}.
* @exception NullPointerException if <code>locale</code> is null
* @return a date formatter.
* @see java.text.DateFormat#getDateInstance(int, java.util.Locale)
*/
@Override
public DateFormat getDateInstance(int style, Locale locale) {
return getInstance(style, -1, locale);
}
/**
* Returns a new <code>DateFormat</code> instance which formats date and time
* with the given formatting style for the specified locale.
* @param dateStyle the given date formatting style. Either one of
* {@link java.text.DateFormat#SHORT DateFormat.SHORT},
* {@link java.text.DateFormat#MEDIUM DateFormat.MEDIUM},
* {@link java.text.DateFormat#LONG DateFormat.LONG}, or
* {@link java.text.DateFormat#FULL DateFormat.FULL}.
* @param timeStyle the given time formatting style. Either one of
* {@link java.text.DateFormat#SHORT DateFormat.SHORT},
* {@link java.text.DateFormat#MEDIUM DateFormat.MEDIUM},
* {@link java.text.DateFormat#LONG DateFormat.LONG}, or
* {@link java.text.DateFormat#FULL DateFormat.FULL}.
* @param locale the desired locale.
* @exception IllegalArgumentException if <code>dateStyle</code> or
* <code>timeStyle</code> is invalid,
* or if <code>locale</code> isn't
* one of the locales returned from
* {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()
* getAvailableLocales()}.
* @exception NullPointerException if <code>locale</code> is null
* @return a date/time formatter.
* @see java.text.DateFormat#getDateTimeInstance(int, int, java.util.Locale)
*/
@Override
public DateFormat getDateTimeInstance(int dateStyle, int timeStyle,
Locale locale) {
return getInstance(dateStyle, timeStyle, locale);
}
private DateFormat getInstance(int dateStyle, int timeStyle, Locale locale) {
if (locale == null) {
throw new NullPointerException();
}
SimpleDateFormat sdf = new SimpleDateFormat("", locale);
Calendar cal = sdf.getCalendar();
try {
String pattern = LocaleProviderAdapter.forType(type)
.getLocaleResources(locale).getDateTimePattern(timeStyle, dateStyle,
cal);
sdf.applyPattern(pattern);
} catch (MissingResourceException mre) {
// Specify the fallback pattern
sdf.applyPattern("M/d/yy h:mm a");
}
return sdf;
}
@Override
public Set<String> getAvailableLanguageTags() {
return langtags;
}
}