//License/*** * Java TelnetD library (embeddable telnet daemon) * Copyright (c) 2000-2005 Dieter Wimberger  * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * Neither the name of the author nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. *   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS ``AS * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE  * POSSIBILITY OF SUCH DAMAGE. ***/
package net.wimpi.telnetd.io.toolkit;

/**
 * Interface that has to be implemented by any class
 * that should be registerable as input validator for
 * Editfield instances.
 *
 * @author Dieter Wimberger
 * @version 2.0 (16/07/2006)
 */
public interface InputValidator {

  /**
   * Method that is called by the Editfield the InputValidator instance
   * has been registered with on the Users signal that
   * he finished editing his/her input.
   * This gives the InputValidator the opportunity to
   * check if the users input is valid.
   *
   * @param str String representing the Editfields value.
   * @return boolean representing if input was valid or not (and user has to reedit).
   */
  public boolean validate(String str);

}//interface InputValidator