com.qualcomm.robotcore.hardware

Class LightMultiplexor

java.lang.Object

com.qualcomm.robotcore.hardware.LightMultiplexor

All Implemented Interfaces:

Light, SwitchableLight

public class LightMultiplexor
extends java.lang.Object
implements SwitchableLight

A LightMultiplexor adapts a second SwitchableLight by adding reference counting to SwitchableLight.enableLight(boolean): the light will be lit if the net number of enables is greater than zero.

Field Summary

Fields

Modifier and Type	Field and Description
protected int	enableCount
protected static java.util.Set<LightMultiplexor>	extantMultiplexors
protected SwitchableLight	target

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	LightMultiplexor(SwitchableLight target)

Method Summary

Modifier and Type	Method and Description
void	enableLight(boolean enable) Turns the light on or off.
static LightMultiplexor	forLight(SwitchableLight target)
boolean	isLightOn() Answers whether the light is on or off

Methods inherited from class java.lang.Object

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

Field Detail

extantMultiplexors

protected static final java.util.Set<LightMultiplexor> extantMultiplexors

target

protected final SwitchableLight target

enableCount

protected int enableCount

Constructor Detail

LightMultiplexor

protected LightMultiplexor(SwitchableLight target)

Method Detail

forLight

public static LightMultiplexor forLight(SwitchableLight target)

isLightOn

public boolean isLightOn()

Description copied from interface: Light

Answers whether the light is on or off

Specified by:

isLightOn in interface Light

Returns:

whether the light is on or off

enableLight

public void enableLight(boolean enable)

Description copied from interface: SwitchableLight

Turns the light on or off.

Specified by:

enableLight in interface SwitchableLight

Parameters:

enable - if true, the light turns on; otherwise the light turns off