/*******************************************************************************
 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
 * in Industry THTH ry.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     VTT Technical Research Centre of Finland - initial API and implementation
 *******************************************************************************/
package org.simantics.utils.ui.validators;

import org.eclipse.jface.dialogs.IInputValidator;

/**
 * NullValidator is IInputValidator that returns always null; accepts all inputs
 * 
 * @author tuoxmao
 * 
 */
public class NullValidator implements IInputValidator {
    private static NullValidator instance = new NullValidator();

    public static NullValidator getInstance() {
        return instance;
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.dialogs.IInputValidator#isValid(java.lang.String)
     */
    public String isValid(String s) {
        return null;
    }
}