de.dante.extex.interpreter.context.impl
Class LanguageObserver

java.lang.Object
  de.dante.extex.interpreter.context.impl.LanguageObserver

All Implemented Interfaces:

CountObserver, TokensObserver

public class LanguageObserver

extends java.lang.Object

implements CountObserver, TokensObserver

This observer is meant for keeping the current typesetting context in sync with the registers \language and \lang.

The tokens register \lang is considered first. Only if this register is not set or it is empty then the count register \language is taken into account.

Version:

$Revision: 1.8 $

Author:

Gerd Neugebauer

LanguageObserver

public LanguageObserver()

Creates a new object.

receiveCountChange

public void receiveCountChange(ContextInternals context,
                               java.lang.String name,
                               Count value)
                        throws ConfigurationException

Description copied from interface: CountObserver

Receive a notification on a count change.

Specified by:

receiveCountChange in interface CountObserver

Parameters:

context - the interpreter context

name - the token containing the name of the changed Count.

value - the new value assigned to the name. In case of null the name is unbound.

Throws:

ConfigurationException

See Also:

CountObserver.receiveCountChange( de.dante.extex.interpreter.context.ContextInternals, java.lang.String, de.dante.extex.interpreter.type.count.Count)

receiveTokensChange

public void receiveTokensChange(ContextInternals context,
                                java.lang.String name,
                                Tokens value)
                         throws ConfigurationException

Description copied from interface: TokensObserver

Receive a notification on a tokens change.

Specified by:

receiveTokensChange in interface TokensObserver

Parameters:

context - the interpreter context

name - the token containing the name of the changed tokens.

value - the new value assigned to the name. In case of null the name is unbound.

Throws:

ConfigurationException

See Also:

TokensObserver.receiveTokensChange( de.dante.extex.interpreter.context.ContextInternals, java.lang.String, de.dante.extex.interpreter.type.tokens.Tokens)