fr.putnami.pwt.core.widget.client.helper.DateParser.java Source code

Introduction

Here is the source code for fr.putnami.pwt.core.widget.client.helper.DateParser.java

Source

/**
 * This file is part of pwt.
 *
 * pwt is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser
 * General Public License as published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * pwt 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 Lesser
 * General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with pwt. If not,
 * see <http://www.gnu.org/licenses/>.
 */
package fr.putnami.pwt.core.widget.client.helper;

import com.google.gwt.i18n.client.DateTimeFormat;
import com.google.gwt.text.shared.Parser;

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

import fr.putnami.pwt.core.widget.client.constant.WidgetParams;

public final class DateParser implements Parser<Date> {

    private static DateParser instance;

    private final DateTimeFormat formater;

    public DateParser(String format) {
        if (format == null) {
            this.formater = DateTimeFormat.getFormat(WidgetParams.Util.get().inputDateSimpleFormat());
        } else {
            this.formater = DateTimeFormat.getFormat(format);
        }
    }

    @Override
    public Date parse(CharSequence text) throws ParseException {
        if (text == null || "".equals(text.toString().trim())) {
            return null;
        }
        return this.formater.parseStrict(text.toString());
    }

    public Date parseOrNull(CharSequence text) {
        try {
            return this.parse(text);
        } catch (ParseException e) {
            return null;
        }
    }

    public static DateParser get() {
        if (DateParser.instance == null) {
            DateParser.instance = new DateParser(null);
        }
        return DateParser.instance;
    }

}