| gvSIG desktop 1

/*

 *  $Id: RegularExpressionValidator.java,v 1.1 2006/06/14 07:29:07 cesar Exp $

 *  IzPack

 *  Copyright (C) 2001-2004 Julien Ponge

 *

 *  File :               RegularExpressionValidator.java

 *  Description :        A validator to enforce non-empty fields.

 *  Author's email :     mike.cunneen@screwfix.com

 *  Author's Website :   N/A

 *

 *  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 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 com.izforge.izpack.util;

import java.util.Map;

import org.apache.regexp.RE;

import com.izforge.izpack.panels.ProcessingClient;

import com.izforge.izpack.panels.RuleInputField;

import com.izforge.izpack.panels.Validator;

/**

 * A validator to enforce non-empty fields.

 *

 * This validator can be used for rule input fields in the UserInputPanel to make

 * sure that the user's entry matches a specified regular expression.

 *

 * @author Mike Cunneen <mike dot cunneen at screwfix dot com>

 */

public class RegularExpressionValidator implements Validator

{

  public static final String STR_PATTERN_DEFAULT = "[a-zA-Z0-9._-]{3,}@[a-zA-Z0-9._-]+([.][a-zA-Z0-9_-]+)*[.][a-zA-Z0-9._-]{2,4}";

  private static final String PATTERN_PARAM = "pattern";

  public boolean validate(ProcessingClient client)

  {

    String patternString;

    RuleInputField field = (RuleInputField) client;

    if (field.hasParams())

    {

      Map paramMap = field.getValidatorParams();

      patternString = (String) paramMap.get(PATTERN_PARAM);

    }

    else

    {

      patternString = STR_PATTERN_DEFAULT;

    }

    RE pattern = new RE(patternString);

    return pattern.match(((RuleInputField) client).getText());

  }

}