/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 de.unioninvestment.eai.portal.support.vaadin.support;

import java.util.Locale;

import com.vaadin.data.util.converter.Converter;

/**
 * Frontend-TO-Backendkonverter für Check-Boxen.
 * 
 * @author max.hartmann
 * 
 */
public class CheckboxPropertyConverter implements Converter<Boolean, String> {

	private static final long serialVersionUID = 1L;
	private final String checkedValue;
	private final String uncheckedValue;

	/**
	 * 
	 * Konstruktor mit Parametern.
	 * 
	 * @param checkedValue
	 *            Wert für Checked-Zustand (true)
	 * @param uncheckedValue
	 *            Wert für Unchecked-Zustand (false)
	 */
	public CheckboxPropertyConverter(String checkedValue, String uncheckedValue) {
		this.checkedValue = checkedValue;
		this.uncheckedValue = uncheckedValue;
	}

	@Override
	public String convertToModel(Boolean value,
			Class<? extends String> targetType, Locale locale)
			throws com.vaadin.data.util.converter.Converter.ConversionException {
		return value ? checkedValue : uncheckedValue;
	}

	@Override
	public Boolean convertToPresentation(String value,
			Class<? extends Boolean> targetType, Locale locale)
			throws com.vaadin.data.util.converter.Converter.ConversionException {

		if (value == null) {
			return false;
		}
		if (value.equals(checkedValue)) {
			return true;
		}
		return false;
	}

	@Override
	public Class<String> getModelType() {
		return String.class;
	}

	@Override
	public Class<Boolean> getPresentationType() {
		return Boolean.class;
	}
}