org.crsh.processor.term

Class ProcessContext

java.lang.Object

org.crsh.processor.term.ProcessContext

All Implemented Interfaces:

Flushable, Runnable, InteractionContext, ScreenContext, ShellProcessContext

 class ProcessContext
extends Object
implements ShellProcessContext, Runnable

Field Summary

Fields

Modifier and Type	Field and Description
(package private) ShellProcess	process .
(package private) Processor	processor .

Constructor Summary

Constructors

Constructor and Description
ProcessContext(Processor processor, ShellProcess process)

Method Summary

Methods

Modifier and Type	Method and Description
void	end(ShellResponse response) This method is invoked when the process ends.
void	flush()
Class<Chunk>	getConsumedType()
int	getHeight() Returns the screen height in chars.
String	getProperty(String name) Returns a generic property, usually this property is resolved by the shell client.
int	getWidth() Returns the screen width in chars.
void	provide(Chunk 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.
void	run()
boolean	takeAlternateBuffer() Take control of the alternate buffer.
void	write(Chunk chunk) Write a chunk to the screen.

Methods inherited from class java.lang.Object

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

Field Detail

processor

final Processor processor

.

process

final ShellProcess process

.

Constructor Detail

ProcessContext

ProcessContext(Processor processor,
              ShellProcess process)

Method Detail

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

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

Returns:

true if the usual buffer is shown

Throws:

IOException

run

public void run()

Specified by:

run in interface Runnable

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

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

Returns:

the term height

getProperty

public String getProperty(String name)

Description copied from interface: InteractionContext

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

Specified by:

getProperty in interface InteractionContext

Parameters:

name - 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

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

getConsumedType

public Class<Chunk> getConsumedType()

write

public void write(Chunk chunk)
           throws IOException

Description copied from interface: ScreenContext

Write a chunk to the screen.

Specified by:

write in interface ScreenContext

Parameters:

chunk - the chunk

Throws:

IOException - any io exception

provide

public void provide(Chunk element)
             throws IOException

Throws:

IOException

flush

public void flush()
           throws IOException

Specified by:

flush in interface Flushable

Throws:

IOException

end

public void end(ShellResponse response)

Description copied from interface: ShellProcessContext

This method is invoked when the process ends.

Specified by:

end in interface ShellProcessContext

Parameters:

response - the shell response