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.shell.io; 021 022 import org.crsh.shell.ui.Element; 023 import org.crsh.shell.ui.UIBuilder; 024 import org.crsh.util.AppendableWriter; 025 026 import java.io.IOException; 027 import java.io.PrintWriter; 028 029 /** 030 * The shell printer extends the {@link PrintWriter} and prints some objects in a special 031 * manner. 032 * 033 * @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a> 034 * @version $Revision$ 035 */ 036 public class ShellPrinter extends PrintWriter { 037 038 /** . */ 039 private final ShellWriter out; 040 041 public ShellPrinter(ShellWriter out) { 042 super(new AppendableWriter(out)); 043 044 // 045 this.out = out; 046 } 047 048 @Override 049 public void println(Object x) { 050 print(x); 051 println(); 052 } 053 054 @Override 055 public void print(Object obj) { 056 if (obj instanceof UIBuilder) { 057 for (Element element : ((UIBuilder)obj).getElements()) { 058 print(element); 059 } 060 } else if (obj instanceof Element) { 061 try { 062 ((Element)obj).print(out); 063 } catch (IOException e) { 064 setError(); 065 } 066 } else { 067 super.print(obj); 068 } 069 } 070 }