org.progeeks.fsm
Class ForwardingTransitionHandler

java.lang.Object
  org.progeeks.fsm.TransitionHandler
      org.progeeks.fsm.ForwardingTransitionHandler

All Implemented Interfaces:

StateHandler

public class ForwardingTransitionHandler
extends TransitionHandler

A transition handler subclass that will forward to a specified delegate StateHandler before returning it's internal state value. This is useful for wrapping an existing StateHandler but providing a different state transition.

Version:

$Revision: 1.1 $

Author:

Paul Speed

Constructor Summary

ForwardingTransitionHandler(int stateTransition, StateHandler delegate)
Creates a new state handler that will foward processing to the specified delegate state handler before returning the specified state transition value.

Method Summary

int	handleMessage(int state, int message, java.lang.Object stateInfo) Calls the delegate's handleMessage() method before calling the super.handleMessage() method.
java.lang.String	toString()

Methods inherited from class org.progeeks.fsm.TransitionHandler

getTransitionState

Methods inherited from class java.lang.Object

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

Constructor Detail

ForwardingTransitionHandler

public ForwardingTransitionHandler(int stateTransition,
                                   StateHandler delegate)

Creates a new state handler that will foward processing to the specified delegate state handler before returning the specified state transition value.

Method Detail

handleMessage

public int handleMessage(int state,
                         int message,
                         java.lang.Object stateInfo)

Calls the delegate's handleMessage() method before calling the super.handleMessage() method.

Specified by:

handleMessage in interface StateHandler

Overrides:

handleMessage in class TransitionHandler

Parameters:

state - The current state the called this handler.

message - The numeric message to be handled.

stateInfo - The application specific data on which the handler can operate if necessary.

toString

public java.lang.String toString()

Overrides:

toString in class TransitionHandler