001    /*
002     * Copyright (C) 2010 eXo Platform SAS.
003     *
004     * This is free software; you can redistribute it and/or modify it
005     * under the terms of the GNU Lesser General Public License as
006     * published by the Free Software Foundation; either version 2.1 of
007     * the License, or (at your option) any later version.
008     *
009     * This software is distributed in the hope that it will be useful,
010     * but WITHOUT ANY WARRANTY; without even the implied warranty of
011     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012     * Lesser General Public License for more details.
013     *
014     * You should have received a copy of the GNU Lesser General Public
015     * License along with this software; if not, write to the Free
016     * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017     * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018     */
019    
020    package org.crsh.term.console;
021    
022    import java.io.IOException;
023    
024    /**
025     * Perform client write.
026     *
027     * @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
028     * @version $Revision$
029     */
030    public abstract class ViewWriter {
031    
032      protected abstract void flush() throws IOException;
033    
034      protected abstract void writeCRLF() throws IOException;
035    
036      protected abstract void write(CharSequence s) throws IOException;
037    
038      protected abstract void write(char c) throws IOException;
039    
040      protected abstract void writeDel() throws IOException;
041    
042      protected abstract boolean writeMoveLeft() throws IOException;
043    
044      protected abstract boolean writeMoveRight(char c) throws IOException;
045    
046    }