jp.xet.baseunits.wicket.CalendarDateConverter.java Source code

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Here is the source code for jp.xet.baseunits.wicket.CalendarDateConverter.java

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/*
 * Copyright 2011-2012 Daisuke Miyamoto. (http://d.hatena.ne.jp/daisuke-m)
 * Created on 2011/10/18
 *
 * 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 jp.xet.baseunits.wicket;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Locale;

import jp.xet.baseunits.time.CalendarDate;

import org.apache.wicket.util.convert.converter.AbstractConverter;
import org.apache.wicket.util.lang.Args;
import org.apache.wicket.util.string.Strings;

/**
 * Converts from Object to {@link CalendarDate}.
 * 
 * @author daisuke
 * @since 2.0
 */
@SuppressWarnings("serial")
public class CalendarDateConverter extends AbstractConverter<CalendarDate> {

    /** default date pattern for {@link SimpleDateFormat} */
    public static final String DEFAILT_PATTERN_JAVA = "yyyy/MM/dd";

    /** default date pattern for JQuery */
    public static final String DEFAILT_PATTERN_JQ = "yy/mm/dd";

    private final String datePattern;

    /**
     * ??
     * 
     * @since 1.0
     */
    public CalendarDateConverter() {
        this(DEFAILT_PATTERN_JAVA);
    }

    /**
     * ??
     * 
     * @param datePattern {@link SimpleDateFormat}????
     * @throws IllegalArgumentException ?{@code null}???
     * @since 1.0
     */
    public CalendarDateConverter(String datePattern) {
        Args.notNull(datePattern, "datePattern");
        this.datePattern = datePattern;
    }

    @Override
    public CalendarDate convertToObject(String value, Locale locale) {
        if (Strings.isEmpty(value)) {
            return null;
        }

        try {
            return CalendarDate.parse(value, datePattern);
        } catch (ParseException e) {
            throw newConversionException("Cannot convert '" + value + "' to CalendarDate", value, locale);
        }
    }

    @Override
    public String convertToString(CalendarDate value, Locale locale) {
        return value == null ? null : value.toString(datePattern, locale);
    }

    @Override
    protected Class<CalendarDate> getTargetType() {
        return CalendarDate.class;
    }
}