/* * Created on 11-Nov-2006 * Created by Allan Crooks * Copyright (C) 2005, 2006 Aelitis, All Rights Reserved. * * 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. * * AELITIS, SAS au capital de 46,603.30 euros * 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France. */ package org.gudy.azureus2.plugins.ui; /** * Interface class which provides a way to validate or reject input provided * by a user. This is mainly to be used with {@link UIInputReceiver}. */ public interface UIInputValidator { /** * Validates a input string from the user. This function has to return * a localised string message indicating why the given string is not * valid. If the string is valid, the function should return <tt>null</tt>. * * <p> * * Note - the returned string in the case of invalid input <b>must</b> be * localised - no translating of the string returned will take place. */ public String validate(String input); }