/**
 * Copyright (C) 2011  JTalks.org Team
 * This library 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 2.1 of the License, or (at your option) any later version.
 * This library 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 this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
package org.jtalks.jcommune.web.validation.editors;

import java.beans.PropertyEditorSupport;

/**
 * Default property editor for Strings.
 * <p/>
 * Optionally allows transforming an empty string into a {@code null} value.
 *
 * @author Andrey Pogorelov
 */
public class DefaultStringEditor extends PropertyEditorSupport {

    private final boolean emptyAsNull;

    /**
     * Create a new DefaultStringEditor.
     * @param emptyAsNull {@code true} if an empty String is to be
     * transformed into {@code null}
     */
    public DefaultStringEditor(boolean emptyAsNull) {
        this.emptyAsNull = emptyAsNull;
    }

    @Override
    public void setAsText(String text) {
        if(emptyAsNull && "".equals(text)){
            setValue(null);
        }
        else {
            setValue(text);
        }
    }

    @Override
    public String getAsText() {
        Object value = getValue();
        return (value != null ? value.toString() : "");
    }

}