DateOverlapValidator.java

/*
 * 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 2
 * 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

package net.rrm.ehour.ui.common.validator;

import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.FormComponent;

import java.util.Date;

/**
 * Checks whether the start date isn't after the end date
 * Fixes bug 1780975
 */

public class DateOverlapValidator extends IdentifiableFormValidator {
    private static final long serialVersionUID = -7176398632862551019L;
    private FormComponent<Date>[] components;

    @SuppressWarnings("unchecked")
    public DateOverlapValidator(String id,
                                FormComponent<Date> startDate,
                                FormComponent<Date> endDate) {
        super(id);

        components = new FormComponent[]{startDate, endDate};
    }

    @Override
    public FormComponent<Date>[] getDependentFormComponents() {
        return null;
    }

    @Override
    public void validate(Form<?> form) {
        if (components[0] != null &&
                components[1] != null &&
                components[0].isVisible()
                && components[1].isVisible()
                && components[0].getInput() != null
                && components[0].getConvertedInput() != null
                && components[1].getInput() != null
                && components[1].getConvertedInput() != null) {
            Date startDate = components[0].getConvertedInput();
            Date endDate = components[1].getConvertedInput();

            if (endDate.before(startDate)) {
                error(components[0], "Date.StartDateAfterEnd");
            }
        }
    }
}