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/*
* Copyright 2000-2021 Vaadin Ltd.
*
* 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 com.vaadin.data.converter;
import java.time.Instant;
import java.time.LocalDate;
import java.time.ZoneId;
import java.util.Date;
import java.util.Objects;
import com.vaadin.data.Converter;
import com.vaadin.data.Result;
import com.vaadin.data.ValueContext;
import com.vaadin.ui.DateField;
import com.vaadin.ui.InlineDateField;
/**
* A converter that converts between <code>LocalDate</code> and
* <code>Date</code>. This is used when a {@link DateField} or
* {@link InlineDateField} is bound to a {@link Date} property.
*
* @author Vaadin Ltd
* @since 8.0
*/
public class LocalDateToDateConverter implements Converter<LocalDate, Date> {
private ZoneId zoneId;
/**
* Creates a new converter using the given time zone.
*
* @param zoneId
* the time zone id to use, not <code>null</code>
*/
public LocalDateToDateConverter(ZoneId zoneId) {
this.zoneId = Objects.requireNonNull(zoneId, "Zone id cannot be null");
}
/**
* Creates a new converter using the system's default time zone.
*
* @see ZoneId#systemDefault()
*/
public LocalDateToDateConverter() {
this(ZoneId.systemDefault());
}
@Override
public Result<Date> convertToModel(LocalDate localDate,
ValueContext context) {
if (localDate == null) {
return Result.ok(null);
}
return Result.ok(Date.from(localDate.atStartOfDay(zoneId).toInstant()));
}
@Override
public LocalDate convertToPresentation(Date date, ValueContext context) {
if (date == null) {
return null;
}
return Instant.ofEpochMilli(date.getTime()).atZone(zoneId)
.toLocalDate();
}
}
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