org.webical.web.converters.DateStringConverter.java Source code

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Here is the source code for org.webical.web.converters.DateStringConverter.java

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/*
 *    Webical - http://www.webical.org
 *    Copyright (C) 2007 Func. Internet Integration
 *
 *    This file is part of Webical.
 *
 *    This program is free software: you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation, either version 3 of the License, or
 *    (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.webical.web.converters;

import java.text.DateFormat;
import java.text.ParseException;
import java.util.Date;
import java.util.Locale;

import org.apache.commons.lang.StringUtils;
import org.apache.wicket.util.convert.ConversionException;
import org.apache.wicket.util.convert.IConverter;

/**
 * 
 * DateString converter that switches between a date and datetime pattern
 * @author Ivo van Dongen
 *
 */
public class DateStringConverter implements IConverter {
    private static final long serialVersionUID = 1L;

    /**
     * The {@link Locale} used by this converter
     */
    private Locale locale;

    /**
     * To decide whether the mask is date (true) or datetime (false) 
     */
    private boolean useDate;

    /**
     * Defaul constructor - sets the converter to Datetime mode instead of Date 
     */
    public DateStringConverter() {
    }

    /* (non-Javadoc)
     * @see org.apache.wicket.util.convert.IConverter#convertToObject(java.lang.String, java.util.Locale)
     */
    public Object convertToObject(String value, Locale locale) {
        if (!(value instanceof String) || StringUtils.isEmpty(value)) {
            return null;
        }

        String dateString = (String) value;
        try {
            if (useDate) {
                return DateFormat.getDateInstance(DateFormat.SHORT, getLocale()).parse(dateString);
            } else {
                return DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT, getLocale())
                        .parse(dateString);
            }
        } catch (ParseException e) {
            throw new ConversionException("'" + value + "' is not a Date");
        }
    }

    /* (non-Javadoc)
     * @see org.apache.wicket.util.convert.IConverter#convertToString(java.lang.Object, java.util.Locale)
     */
    public String convertToString(Object value, Locale locale) {
        if (value == null) {
            return null;
        }

        Date date = (Date) value;

        String result;
        if (useDate) {
            result = DateFormat.getDateInstance(DateFormat.SHORT, getLocale()).format(date);
        } else {
            result = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT, getLocale()).format(date);
        }

        return result;
    }

    ///////////////////////
    // Getters / Setters //
    ///////////////////////

    /**
     * @return the {@link Locale} used by this converter
     */
    public Locale getLocale() {
        return locale;
    }

    /**
     * @param locale the {@link Locale} to be used by this converter
     */
    public void setLocale(Locale locale) {
        this.locale = locale;
    }

    /**
     * @param useDate a boolean specifying to use a date format instead of a datetime format
     */
    public void setUseDate(boolean useDate) {
        this.useDate = useDate;
    }
}