/**
* Copyright (C) 2015 Valkyrie RCP
*
* 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.valkyriercp.binding.format.support;
import org.valkyriercp.binding.format.InvalidFormatException;
import java.text.DateFormat;
import java.text.ParseException;
import java.util.Date;
/**
* Formatter that formats date objects.
*
* @author Keith Donald
*/
public class DateFormatter extends AbstractFormatter {
private DateFormat dateFormat;
/**
* Constructs a date formatter that will delegate to the specified date format.
* @param dateFormat the date format to use
*/
public DateFormatter(DateFormat dateFormat) {
this.dateFormat = dateFormat;
}
/**
* Constructs a date formatter that will delegate to the specified date format.
* @param dateFormat the date format to use
* @param allowEmpty should this formatter allow empty input arguments?
*/
public DateFormatter(DateFormat dateFormat, boolean allowEmpty) {
super(allowEmpty);
this.dateFormat = dateFormat;
}
// convert from date to string
protected String doFormatValue(Object date) {
return dateFormat.format((Date) date);
}
// convert back from string to date
protected Object doParseValue(String formattedString, Class targetClass) throws ParseException {
return dateFormat.parse(formattedString);
}
/**
* Convenience method to parse a date.
*/
public Date parseDate(String formattedString) throws InvalidFormatException {
return (Date) parseValue(formattedString, Date.class);
}
}