/*
* Copyright (c) 2012, grossmann
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the jo-widgets.org nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL jo-widgets.org BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
package org.jowidgets.i18n.api;
import java.io.Serializable;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
public final class LocaleLocal {
private LocaleLocal() {}
public interface IValueFactory<VALUE_TYPE> {
VALUE_TYPE create();
}
public static <VALUE_TYPE> ILocaleLocal<VALUE_TYPE> create() {
return create(null);
}
/**
* Creates a new LocaleLocal.
*
* @param factory The factory that will be used to create new values for each different set locale
*
* @return The new created LocaleLocal object
*/
public static <VALUE_TYPE> ILocaleLocal<VALUE_TYPE> create(final IValueFactory<VALUE_TYPE> factory) {
return new LocaleLocalImpl<VALUE_TYPE>(factory);
}
private static final class LocaleLocalImpl<VALUE_TYPE> implements ILocaleLocal<VALUE_TYPE>, Serializable {
private static final long serialVersionUID = 8869656349804898576L;
private final IValueFactory<VALUE_TYPE> valueFactory;
private final Map<Locale, VALUE_TYPE> values;
private LocaleLocalImpl(final IValueFactory<VALUE_TYPE> valueFactory) {
this.valueFactory = valueFactory;
this.values = new HashMap<Locale, VALUE_TYPE>();
}
@Override
public VALUE_TYPE get() {
final Locale locale = LocaleHolder.getUserLocale();
VALUE_TYPE result = values.get(locale);
if (result == null && valueFactory != null) {
result = valueFactory.create();
values.put(locale, result);
}
return result;
}
@Override
public void setValue(final VALUE_TYPE value) {
values.put(LocaleHolder.getUserLocale(), value);
}
}
}