ballworld.model.strategy

Class SwitcherStrategy

java.lang.Object

ballworld.model.strategy.SwitcherStrategy

All Implemented Interfaces:

IUpdateStrategy

public class SwitcherStrategy
extends java.lang.Object
implements IUpdateStrategy

Decorator design pattern strategy that provides an indirection layer and encapsulation over another strategy, enabling it to be switched without disturbing the context ball.

Author:

swong

Field Summary

Fields

Modifier and Type	Field and Description
private IUpdateStrategy	_strategy The decoree strategy.

Constructor Summary

Constructors

Constructor and Description
SwitcherStrategy() Constructor for the strategy.

Method Summary

Modifier and Type	Method and Description
void	setStrategy(IUpdateStrategy newStrategy) Set the decoree strategy to a new value
void	updateState(Ball context, Dispatcher disp) Delegates to the decoree strategy as the context's strategy.

Methods inherited from class java.lang.Object

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

Field Detail

_strategy

private IUpdateStrategy _strategy

The decoree strategy. A straight strategy by default.

Constructor Detail

SwitcherStrategy

public SwitcherStrategy()

Constructor for the strategy. Composee strategy initializations are being done here so that the composition lines will show up in a Green UML 3.5.0 diagram.

Method Detail

updateState

public void updateState(Ball context,
                        Dispatcher disp)

Delegates to the decoree strategy as the context's strategy.

Specified by:

updateState in interface IUpdateStrategy

Parameters:

context - The host ball for this strategy

disp - The dispatcher to use if necessary

setStrategy

public void setStrategy(IUpdateStrategy newStrategy)

Set the decoree strategy to a new value

Parameters:

newStrategy - The new strategy that wil set.