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/*
* Copyright 2000-2022 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.ui.declarative.converters;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import com.vaadin.data.Converter;
import com.vaadin.data.Result;
import com.vaadin.data.ValueContext;
import com.vaadin.ui.declarative.DesignAttributeHandler;
/**
* A date converter to be used by {@link DesignAttributeHandler}. Provides
* ISO-compliant way of storing date and time.
*
* @since 7.4
* @author Vaadin Ltd
*/
public class DesignDateConverter implements Converter<String, Date> {
@Override
public Result<Date> convertToModel(String value, ValueContext context) {
for (String pattern : new String[] { "yyyy-MM-dd HH:mm:ssZ",
"yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM-dd HH",
"yyyy-MM-dd", "yyyy-MM", "yyyy" }) {
try {
return Result.ok(new SimpleDateFormat(pattern).parse(value));
} catch (ParseException e) {
// not parseable, ignore and try another format
}
}
return Result.error("Could not parse date value: " + value);
}
@Override
public String convertToPresentation(Date value, ValueContext context) {
return new SimpleDateFormat("yyyy-MM-dd HH:mm:ssZ").format(value);
}
}
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