/*
* Copyright 2008-2017 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 griffon.core.formatters;
import javax.annotation.Nullable;
import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import static griffon.util.GriffonNameUtils.isBlank;
/**
* @author Andres Almiray
* @since 2.0.0
*/
public class BigDecimalFormatter extends AbstractFormatter<BigDecimal> {
public static final String PATTERN_CURRENCY = "currency";
public static final String PATTERN_PERCENT = "percent";
private final NumberFormat numberFormat;
public BigDecimalFormatter() {
this(null);
}
public BigDecimalFormatter(@Nullable String pattern) {
if (isBlank(pattern)) {
numberFormat = new DecimalFormat();
((DecimalFormat) numberFormat).setParseBigDecimal(true);
} else if (PATTERN_CURRENCY.equalsIgnoreCase(pattern)) {
numberFormat = NumberFormat.getCurrencyInstance();
} else if (PATTERN_PERCENT.equalsIgnoreCase(pattern)) {
numberFormat = NumberFormat.getPercentInstance();
} else {
numberFormat = new DecimalFormat(pattern);
((DecimalFormat) numberFormat).setParseBigDecimal(true);
}
}
@Nullable
public String format(@Nullable BigDecimal number) {
return number == null ? null : numberFormat.format(number);
}
@Nullable
@Override
public BigDecimal parse(@Nullable String str) throws ParseException {
if (isBlank(str)) return null;
try {
Number number = numberFormat.parse(str);
if (number instanceof BigDecimal) {
return (BigDecimal) number;
}
return new BigDecimal(number.longValue());
} catch (java.text.ParseException e) {
throw new ParseException(e);
}
}
}