001    /*
002     * Copyright (C) 2012 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.command;
021    
022    import org.crsh.Pipe;
023    import org.crsh.text.Chunk;
024    import org.crsh.text.RenderingContext;
025    import org.crsh.text.RenderPrintWriter;
026    
027    import java.io.IOException;
028    import java.util.Map;
029    
030    class InnerInvocationContext<P> implements InvocationContext<P> {
031    
032      /** . */
033      final InvocationContext<?> outter;
034    
035      /** . */
036      final Pipe<Object> producer;
037    
038      /** . */
039      private RenderPrintWriter writer;
040    
041      InnerInvocationContext(
042        InvocationContext<?> outter,
043        Pipe<Object> producer) {
044    
045        //
046        this.outter = outter;
047        this.producer = producer;
048      }
049    
050      public int getWidth() {
051        return outter.getWidth();
052      }
053    
054      public int getHeight() {
055        return outter.getHeight();
056      }
057    
058      public String getProperty(String propertyName) {
059        return outter.getProperty(propertyName);
060      }
061    
062      public String readLine(String msg, boolean echo) {
063        return outter.readLine(msg, echo);
064      }
065    
066      public RenderPrintWriter getWriter() {
067        if (writer == null) {
068          writer = new RenderPrintWriter(new RenderingContext() {
069            public int getWidth() {
070              return outter.getWidth();
071            }
072            public void provide(Chunk element) throws IOException {
073              producer.provide(element);
074            }
075            public void flush() throws IOException {
076              producer.flush();
077            }
078          });
079        }
080        return writer;
081      }
082    
083      public void provide(P element) throws IOException {
084        producer.provide(element);
085      }
086    
087      public void flush() throws IOException {
088        producer.flush();
089      }
090    
091      public Map<String, Object> getSession() {
092        return outter.getSession();
093      }
094    
095      public Map<String, Object> getAttributes() {
096        return outter.getAttributes();
097      }
098    }