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- /*
- * Copyright 2000-2016 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.time.LocalDate;
- import java.time.LocalDateTime;
- import java.time.format.DateTimeFormatter;
- import java.time.format.DateTimeParseException;
- import java.util.Locale;
-
- import com.vaadin.data.Converter;
- import com.vaadin.data.Result;
- import com.vaadin.data.ValueContext;
- import com.vaadin.ui.declarative.DesignAttributeHandler;
-
- /**
- * A {@link LocalDate} converter to be used by {@link DesignAttributeHandler}.
- * Provides ISO-compliant way of storing date and time.
- *
- * @since 8.0
- * @author Vaadin Ltd
- */
- public class DesignLocalDateTimeConverter
- implements Converter<String, LocalDateTime> {
-
- @Override
- public Result<LocalDateTime> 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 {
- Locale effectiveLocale = context.getLocale()
- .orElse(Locale.ENGLISH);
- LocalDateTime date = DateTimeFormatter
- .ofPattern(pattern, effectiveLocale)
- .parse(value, LocalDateTime::from);
- return Result.ok(date);
- } catch (DateTimeParseException ignored) {
- // not parseable, ignore and try another format
- }
- }
- return Result.error("Could not parse date value: " + value);
- }
-
- @Override
- public String convertToPresentation(LocalDateTime value,
- ValueContext context) {
- return DateTimeFormatter
- .ofPattern("yyyy-MM-dd HH:mm:ss",
- context.getLocale().orElse(Locale.ENGLISH))
- .format(value);
- }
-
- }
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