org.crsh.shell.impl.remoting
Class ClientProcessContext

java.lang.Object
  org.crsh.shell.impl.remoting.ClientProcessContext

All Implemented Interfaces:

Appendable, InteractionContext, ShellProcessContext, Screenable, ScreenContext

 class ClientProcessContext
extends Object
implements ShellProcessContext

Field Summary

(package private) ArrayList<ServerMessage.Chunk>	buffer .
(package private) ClientAutomaton	client .
private boolean	closed .
(package private) ShellProcess	process .

Constructor Summary

ClientProcessContext(ClientAutomaton client, ShellProcess process)

Method Summary

Screenable	append(char c)
Screenable	append(CharSequence s)
Screenable	append(CharSequence csq, int start, int end)
Screenable	append(Style style)
Screenable	cls()
void	end(ShellResponse response) This method is invoked when the process ends.
private void	ensureSize() Ensure we have a recent size, the size is considered as recent if it's younger than 2 second, otherwise send a get size message.
(package private) void	execute()
void	flush() Flush the stream.
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.
String	readLine(String msg, boolean echo) Display a message and read a line on the console, this method call can be blocking until the user provides a value.
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

client

final ClientAutomaton client

.

process

final ShellProcess process

.

buffer

final ArrayList<ServerMessage.Chunk> buffer

.

closed

private boolean closed

.

Constructor Detail

ClientProcessContext

ClientProcessContext(ClientAutomaton client,
                     ShellProcess process)

Method Detail

ensureSize

private void ensureSize()

Ensure we have a recent size, the size is considered as recent if it's younger than 2 second, otherwise send a get size message.

execute

void execute()

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

takeAlternateBuffer

public boolean takeAlternateBuffer()

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 ScreenContext.flush() method is invoked.

Specified by:

takeAlternateBuffer in interface InteractionContext

Returns:

true if the alternate buffer is shown

releaseAlternateBuffer

public boolean releaseAlternateBuffer()

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 ScreenContext.flush() method is invoked.

Specified by:

releaseAlternateBuffer in interface InteractionContext

Returns:

true if the usual buffer is shown

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, this method call can be blocking until the user provides a value. 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

append

public Screenable append(CharSequence s)
                  throws IOException

Specified by:

append in interface Appendable

Throws:

IOException

append

public Screenable append(char c)
                  throws IOException

Specified by:

append in interface Appendable

Throws:

IOException

append

public Screenable append(CharSequence csq,
                         int start,
                         int end)
                  throws IOException

Specified by:

append in interface Appendable

Throws:

IOException

append

public Screenable append(Style style)
                  throws IOException

Specified by:

append in interface Screenable

Throws:

IOException

cls

public Screenable cls()
               throws IOException

Specified by:

cls in interface Screenable

Throws:

IOException

flush

public void flush()

Description copied from interface: ScreenContext

Flush the stream.

Specified by:

flush in interface ScreenContext

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