/*
* Copyright 2004-2008 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.binding.format;
import java.text.NumberFormat;
import java.util.Locale;
import org.springframework.context.i18n.LocaleContextHolder;
/**
* Base class suitable for subclassing by most {@link NumberFormatFactory} implementations.
*
* @author Keith Donald
*/
public abstract class AbstractNumberFormatFactory implements NumberFormatFactory {
private Locale locale;
/**
* The locale to use in formatting number values. If null, the locale associated with the current thread is used.
* @see LocaleContextHolder#getLocale()
* @return the locale
*/
public Locale getLocale() {
return locale;
}
/**
* Sets the locale to use in formatting number values.
* @param locale the locale
*/
public void setLocale(Locale locale) {
this.locale = locale;
}
public final NumberFormat getNumberFormat() {
Locale locale = determineLocale(this.locale);
return getNumberFormat(locale);
}
/**
* Subclasses should override to create the new NumberFormat instance.
* @param locale the locale to use
* @return the number format
*/
protected abstract NumberFormat getNumberFormat(Locale locale);
// internal helpers
private Locale determineLocale(Locale locale) {
return locale != null ? locale : LocaleContextHolder.getLocale();
}
}