?? inputfilter.java
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//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;
import java.io.IOException;
/**
* Interface that has to be implemented by any class
* that should be registerable as input filter for
* Editfield instances.
*
* @author Dieter Wimberger
* @version 2.0 (16/07/2006)
*/
public interface InputFilter {
/**
* Method that is called by the Editfield this InputFilter instance
* has been registered with on bytes read from the Stream.
* This will give the InputFilter the opportunity to
*
* @param key Integer representing a byte or a constant defining
* a special key.
* @return int Representing the byte to be used by the Editfield.
*/
public int filterInput(int key) throws IOException;
/**
* Defines a special key denoting that the input has been
* handled.
*/
public final int INPUT_HANDLED = -2000;
/**
* Defines a special key denoting that the input
* is invalid.
*/
public final int INPUT_INVALID = -2001;
}//Interface InputFilter
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