/*
 * 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.portlet.crud.domain.model;

import java.util.Calendar;
import java.util.Date;

import de.unioninvestment.eai.portal.portlet.crud.config.FormFieldConfig;
import de.unioninvestment.eai.portal.support.vaadin.context.Context;
import de.unioninvestment.eai.portal.support.vaadin.date.DateUtils;
import de.unioninvestment.eai.portal.support.vaadin.support.DateToStringConverter;

/**
 * 
 * Formular-Feld für Datums-Felder.
 * 
 * @author max.hartmann
 * 
 */
public class DateFormField extends FormField {
	private static final long serialVersionUID = 42L;

	private DateToStringConverter dateToStringConverter;

	/**
	 * Konstruktor mit Parametern.
	 * 
	 * @param config
	 *            Konfiguration des Datums-Feldes
	 */
	public DateFormField(FormFieldConfig config) {
		super(config);

		dateToStringConverter = new DateToStringConverter(getResolution(),
				getDateFormat());
	}

	/**
	 * Liefert das Datumsformat.
	 * 
	 * @return Datumsformat
	 */
	public final String getDateFormat() {
		if (config != null && config.getDate() != null) {
			return config.getDate().getFormat();
		}

		return null;
	}

	/**
	 * Liefert die Genauigkeit des Datums zurück. Dabei wird als Ergebnis eine
	 * Konstante der Klasse {@link Calendar} zurückgeliefert, die die
	 * Genauigkeit anzeigt.
	 * 
	 * Beispiel: {@link Calendar#MINUTE} für Minutengenauigkeit
	 * 
	 * @return Genauigkeit des Datums als {@link Calendar} Konstante
	 */
	public final int getResolution() {
		String dateFormat = getDateFormat();
		dateFormat = dateFormat == null ? "" : dateFormat;
		return DateUtils.getResolution(dateFormat);
	}

	public String getDefaultValue() {
		return config.getDate().getDefault();
	}

	public DateToStringConverter getConverter() {
		return dateToStringConverter;
	}

	public Date getBeginDate() {
		return (Date) getConverter().convertToPresentation(getValue(),
				Date.class, Context.getLocale());
	}

	/**
	 * Berechnet das Enddatum.
	 * 
	 * @return Datum
	 */
	public Date getEndDate() {
		return DateUtils.getEndDate(getBeginDate(), getResolution());
	}

}