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org.crsh.shell.impl.command
Class CRaSHProcessContext

java.lang.Object
  extended by org.crsh.shell.impl.command.CRaSHProcessContext
All Implemented Interfaces:
Closeable, Flushable, CommandContext<Chunk>, RuntimeContext, Consumer<Chunk>, InteractionContext<Chunk>, ScreenContext<Chunk>
 class CRaSHProcessContext
extends Object

    

    
implements CommandContext<Chunk>, Closeable

    

      

    

  

  

  

  

  

    

      Field Summary
    

    

      private  ChunkAdapter
      adapter

                .		
    

    

      private  ShellProcessContext
      processContext

                .		
    

    

      private  CRaSHSession
      session

                .		
    

    

      private  boolean
      useAlternateBuffer

                .		
    

  
  
  

    

      Constructor Summary
    

    

      CRaSHProcessContext(CRaSHSession session, ShellProcessContext processContext)

                 		
    

  
  
  

    

      Method Summary
    

    

       void
      close()

                 		
    

    

       void
      flush()

                 		
    

    

       Map<String,Object>
      getAttributes()

                Returns the current attributes.		
    

    

       Class<Chunk>
      getConsumedType()

                Returns the class of the element generic type.		
    

    

       int
      getHeight()

                Returns the screen height in chars.		
    

    

       String
      getProperty(String propertyName)

                Returns a generic property, usually this property is resolved by the shell client.		
    

    

       Map<String,Object>
      getSession()

                Returns the current session.		
    

    

       int
      getWidth()

                Returns the screen width in chars.		
    

    

       boolean
      isPiped()

                 		
    

    

       void
      provide(Chunk element)

                Provide an element.		
    

    

       String
      readLine(String msg, boolean echo)

                Display a message and read a line on the console.		
    

    

       boolean
      releaseAlternateBuffer()

                Release control of the alternate buffer.		
    

    

       boolean
      takeAlternateBuffer()

                Take control of the alternate buffer.		
    

  
 
  

    

      Methods inherited from class java.lang.Object
    

    

      clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    

  
 
  

  

    

      Field Detail
    

  

  
session

  
private final CRaSHSession session

  

    

      .
      

      

    

  

  

  
  
processContext

  
private final ShellProcessContext processContext

  

    

      .
      

      

    

  

  

  
  
adapter

  
private final ChunkAdapter adapter

  

    

      .
      

      

    

  

  

  
  
useAlternateBuffer

  
private boolean useAlternateBuffer

  

    

      .
      

      

    

  

  

    

      Constructor Detail
    

  

  
CRaSHProcessContext

  
CRaSHProcessContext(CRaSHSession session,
                    ShellProcessContext processContext)

  

  

    

      Method Detail
    

  

  
isPiped

  
public boolean isPiped()

  

    

      

        
Specified by:

        
isPiped in interface CommandContext<Chunk>

      

    

    

      

    

  

  

  
  
takeAlternateBuffer

  
public boolean takeAlternateBuffer()
                            throws IOException

  

    
Description copied from interface: InteractionContext

    

      Take control of the alternate buffer. When the alternate buffer is already used nothing happens. The buffer switch should occur when then Flushable.flush() method is invoked.
      

    

    

      

        
Specified by:

        
takeAlternateBuffer in interface InteractionContext<Chunk>

      

    

    

      

        
Returns:

        
true if the alternate buffer is shown

        
Throws:

        
IOException

      

    

  

  

  
  
releaseAlternateBuffer

  
public boolean releaseAlternateBuffer()
                               throws IOException

  

    
Description copied from interface: InteractionContext

    

      Release control of the alternate buffer. When the normal buffer is already used nothing happens. The buffer switch should occur when then Flushable.flush() method is invoked.
      

    

    

      

        
Specified by:

        
releaseAlternateBuffer in interface InteractionContext<Chunk>

      

    

    

      

        
Returns:

        
true if the usual buffer is shown

        
Throws:

        
IOException

      

    

  

  

  
  
getProperty

  
public String getProperty(String propertyName)

  

    
Description copied from interface: InteractionContext

    

      Returns a generic property, usually this property is resolved by the shell client.
      

    

    

      

        
Specified by:

        
getProperty in interface InteractionContext<Chunk>

      

    

    

      

        
Parameters:

        
propertyName - the property name

        
Returns:

        
the property value

      

    

  

  

  
  
readLine

  
public String readLine(String msg,
                       boolean echo)

  

    
Description copied from interface: InteractionContext

    

      Display a message and read a line on the console. If no line can be read then null is returned.
      

    

    

      

        
Specified by:

        
readLine in interface InteractionContext<Chunk>

      

    

    

      

        
Parameters:

        
msg - the message to display before reading a line

        
echo - wether or not the line read should be echoed when typing

        
Returns:

        
the line read

      

    

  

  

  
  
getWidth

  
public int getWidth()

  

    
Description copied from interface: ScreenContext

    

      Returns the screen width in chars. When the value is not positive it means the value could not be determined.
      

    

    

      

        
Specified by:

        
getWidth in interface ScreenContext<Chunk>

      

    

    

      

        
Returns:

        
the term width

      

    

  

  

  
  
getHeight

  
public int getHeight()

  

    
Description copied from interface: ScreenContext

    

      Returns the screen height in chars. When the value is not positive it means the value could not be determined.
      

    

    

      

        
Specified by:

        
getHeight in interface ScreenContext<Chunk>

      

    

    

      

        
Returns:

        
the term height

      

    

  

  

  
  
getConsumedType

  
public Class<Chunk> getConsumedType()

  

    
Description copied from interface: Consumer

    

      Returns the class of the element generic type.
      

    

    

      

        
Specified by:

        
getConsumedType in interface Consumer<Chunk>

      

    

    

      

        
Returns:

        
the consumed type

      

    

  

  

  
  
provide

  
public void provide(Chunk element)
             throws IOException

  

    
Description copied from interface: Consumer

    

      Provide an element.
      

    

    

      

        
Specified by:

        
provide in interface Consumer<Chunk>

      

    

    

      

        
Parameters:

        
element - the provided element

        
Throws:

        
IOException

      

    

  

  

  
  
flush

  
public void flush()
           throws IOException

  

    

      

        
Specified by:

        
flush in interface Flushable

      

    

    

      

        
Throws:

        
IOException

      

    

  

  

  
  
getSession

  
public Map<String,Object> getSession()

  

    
Description copied from interface: RuntimeContext

    

      Returns the current session.
      

    

    

      

        
Specified by:

        
getSession in interface RuntimeContext

      

    

    

      

        
Returns:

        
the session map

      

    

  

  

  
  
getAttributes

  
public Map<String,Object> getAttributes()

  

    
Description copied from interface: RuntimeContext

    

      Returns the current attributes.
      

    

    

      

        
Specified by:

        
getAttributes in interface RuntimeContext

      

    

    

      

        
Returns:

        
the attributes map

      

    

  

  

  
  
close

  
public void close()
           throws IOException

  

    

      

        
Specified by:

        
close in interface Closeable

      

    

    

      

        
Throws:

        
IOException

      

    

  

  

   
  

    

      
        
        

          

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