com.vaadin.ui.declarative.converters.DesignLocalDateTimeConverter Maven / Gradle / Ivy
/*
* Copyright (C) 2000-2024 Vaadin Ltd
*
* This program is available under Vaadin Commercial License and Service Terms.
*
* See for the full
* 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 {
@Override
public Result 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);
}
}