com.vaadin.ui.declarative.converters.DesignTimeZoneConverter Maven / Gradle / Ivy

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/*
 * 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.util.TimeZone;

import com.vaadin.data.Converter;
import com.vaadin.data.Result;
import com.vaadin.data.ValueContext;
import com.vaadin.ui.declarative.DesignAttributeHandler;

/**
 * Utility class for {@link DesignAttributeHandler} that deals with converting
 * various TimeZones to string.
 *
 * @since 7.4
 * @author Vaadin Ltd
 */
public class DesignTimeZoneConverter implements Converter {

    @Override
    public Result convertToModel(String value, ValueContext context) {
        if (value == null || value.isEmpty()) {
            return Result.ok(null);
        }

        return Result.ok(TimeZone.getTimeZone(value));
    }

    @Override
    public String convertToPresentation(TimeZone value, ValueContext context) {
        if (value == null) {
            return "";
        } else {
            return value.getID();
        }
    }

}