Class DoubleTurnoutSignalHead

All Implemented Interfaces:
VetoableChangeListener, Comparable<NamedBean>, EventListener, PropertyChangeProvider, NamedBean, Signal, SignalHead
Direct Known Subclasses:
TripleOutputSignalHead, TripleTurnoutSignalHead

public class DoubleTurnoutSignalHead
extends DefaultSignalHead
Drive a single signal head via two "Turnout" objects.

After much confusion, the user-level terminology was changed to call these "Double Output"; the class name remains the same to reduce recoding.

The two Turnout objects are provided during construction, and each drives a specific color (RED and GREEN). Normally, "THROWN" is on, and "CLOSED" is off. YELLOW is provided by turning both on ("THROWN")

This class also listens to the Turnouts to see if they've been changed via some other mechanism.