pobs
Interface PControl

All Known Implementing Classes:

PDisableActions, PDisableCase, PDisableSkip, PEnableActions, PEnableCase, PEnableSkip, PFirstAlternative, PLongestAlternative, PShortestAlternative

public interface PControl

Interface of all classes which manipulate PDirective.

Author:

Franz-Josef Elmer

Method Summary

java.lang.Object	modifyState(PDirective directive) Modifies a sub state of the specified directive.
void	reestablishPreviousState(PDirective directive, java.lang.Object previousState) Reestablishes the previous state before modification.

Method Detail

modifyState

public java.lang.Object modifyState(PDirective directive)

Modifies a sub state of the specified directive.

Parameters:

directive - Directive to be modified.

Returns:

sub state before modification which allows reestablishing the previous state.

reestablishPreviousState

public void reestablishPreviousState(PDirective directive,
                                     java.lang.Object previousState)

Reestablishes the previous state before modification.

Parameters:

directive - Directive which has been modified.

previousState - Previous state as returned by modifyState(PDirective).