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.io.Consumer; 023 import org.crsh.text.Chunk; 024 import org.crsh.shell.ScreenContext; 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 Consumer<P> consumer; 037 038 /** . */ 039 private RenderPrintWriter writer; 040 041 InnerInvocationContext( 042 InvocationContext<?> outter, 043 Consumer<P> consumer) { 044 045 // 046 this.outter = outter; 047 this.consumer = consumer; 048 } 049 050 public CommandInvoker<?, ?> resolve(String s) throws ScriptException, IOException { 051 return outter.resolve(s); 052 } 053 054 public int getWidth() { 055 return outter.getWidth(); 056 } 057 058 public int getHeight() { 059 return outter.getHeight(); 060 } 061 062 public boolean takeAlternateBuffer() throws IOException { 063 return outter.takeAlternateBuffer(); 064 } 065 066 public boolean releaseAlternateBuffer() throws IOException { 067 return outter.releaseAlternateBuffer(); 068 } 069 070 public String getProperty(String propertyName) { 071 return outter.getProperty(propertyName); 072 } 073 074 public String readLine(String msg, boolean echo) { 075 return outter.readLine(msg, echo); 076 } 077 078 public RenderPrintWriter getWriter() { 079 if (writer == null) { 080 writer = new RenderPrintWriter(new ScreenContext<Chunk>() { 081 public Class<Chunk> getConsumedType() { 082 return Chunk.class; 083 } 084 public int getWidth() { 085 return outter.getWidth(); 086 } 087 public int getHeight() { 088 return outter.getHeight(); 089 } 090 public void provide(Chunk element) throws IOException { 091 Class<P> consumedType = consumer.getConsumedType(); 092 if (consumedType.isInstance(element)) { 093 P p = consumedType.cast(element); 094 consumer.provide(p); 095 } 096 } 097 public void flush() throws IOException { 098 consumer.flush(); 099 } 100 }); 101 } 102 return writer; 103 } 104 105 public Class<P> getConsumedType() { 106 return consumer.getConsumedType(); 107 } 108 109 public void provide(P element) throws IOException { 110 consumer.provide(element); 111 } 112 113 public void flush() throws IOException { 114 consumer.flush(); 115 } 116 117 public Map<String, Object> getSession() { 118 return outter.getSession(); 119 } 120 121 public Map<String, Object> getAttributes() { 122 return outter.getAttributes(); 123 } 124 }