Package jmri.jmrit.ussctc

Class SignalHeadSection

java.lang.Object

jmri.jmrit.ussctc.SignalHeadSection

All Implemented Interfaces:

CentralSection<CodeGroupThreeBits,CodeGroupThreeBits>, FieldSection<CodeGroupThreeBits,CodeGroupThreeBits>, Section<CodeGroupThreeBits,CodeGroupThreeBits>

public class SignalHeadSection
extends Object
implements Section<CodeGroupThreeBits,CodeGroupThreeBits>

Drive a signal section on a USS CTC panel. Implements Section for both the field and CTC machine parts.

Based on the Signal interface.

Note that this intentionally does not turn off indicators when the code button is pressed unless a change has been requested. This is a model-railroad compromise to speed up the dispatcher's ability to see what's going on.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static enum	SignalHeadSection.Machine

Field Summary

Fields

Modifier and Type	Field	Description
static final CodeGroupThreeBits	CODE_LEFT
static final CodeGroupThreeBits	CODE_OFF
static final CodeGroupThreeBits	CODE_RIGHT
static final CodeGroupThreeBits	CODE_STOP
(package private) static final int	DEFAULT_RUN_TIME_LENGTH
(package private) boolean	deferIndication
(package private) ArrayDeque<NamedBeanHandle<Signal>>	hLeftHeads
(package private) NamedBeanHandle<Turnout>	hLeftIndicator
(package private) NamedBeanHandle<Sensor>	hLeftInput
(package private) ArrayDeque<NamedBeanHandle<Signal>>	hRightHeads
(package private) NamedBeanHandle<Turnout>	hRightIndicator
(package private) NamedBeanHandle<Sensor>	hRightInput
(package private) NamedBeanHandle<Turnout>	hStopIndicator
(package private) CodeGroupThreeBits	lastIndication
(package private) List<Lock>	leftwardLocks
(package private) SignalHeadSection.Machine	machine
static int	MOVEMENT_DELAY
(package private) final PropertyChangeSupport	pcs
(package private) List<Lock>	rightwardLocks
(package private) Station<CodeGroupThreeBits,CodeGroupThreeBits>	station
(package private) Sensor	timeLogSensor
(package private) Memory	timeMemory
(package private) boolean	timeRunning

Constructor Summary

Constructors

Constructor	Description
SignalHeadSection()	Anonymous object only for testing
SignalHeadSection(List<String> rightHeads, List<String> leftHeads, String leftIndicator, String stopIndicator, String rightIndicator, String leftInput, String rightInput, Station<CodeGroupThreeBits,CodeGroupThreeBits> station)	Create and configure.

Method Summary

Modifier and Type	Method	Description
void	addLeftwardLocks(List<Lock> locks)
void	addPropertyChangeListener(PropertyChangeListener l)
void	addRightwardLocks(List<Lock> locks)
CodeGroupThreeBits	codeSendStart()	Start of sending code operation: Set indicators off if a change has been requested Provide values to send over line
void	codeValueDelivered(CodeGroupThreeBits value)	Code arrives in field.
protected void	firePropertyChange(String p, Object old, Object n)
CodeGroupThreeBits	getCurrentIndication()	Work out current indication from layout status.
(package private) CodeGroupThreeBits	getLastIndication()
String	getName()	Name of this Section.
Station<CodeGroupThreeBits,CodeGroupThreeBits>	getStation()
boolean	headShowsClear(NamedBeanHandle<Signal> handle)	Clear is defined as showing above Restricting.
boolean	headShowsRestricting(NamedBeanHandle<Signal> handle)	"Restricting" means that a signal is showing FLASHRED
void	indicationComplete(CodeGroupThreeBits value)	Process values received from the field unit.
CodeGroupThreeBits	indicationStart()	Provide state that's returned from field to machine via indication.
boolean	isRunningTime()
(package private) void	layoutSignalHeadChanged(PropertyChangeEvent e)
void	removePropertyChangeListener(PropertyChangeListener l)
(package private) void	setLastIndication(CodeGroupThreeBits v)
protected void	setListHeldState(Iterable<NamedBeanHandle<Signal>> list, boolean state)
(package private) void	startRunningTime()
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

DEFAULT_RUN_TIME_LENGTH

static final int DEFAULT_RUN_TIME_LENGTH

See Also:

• Constant Field Values

timeMemory

Memory timeMemory

timeLogSensor

Sensor timeLogSensor

hRightHeads

ArrayDeque<NamedBeanHandle<Signal>> hRightHeads

hLeftHeads

ArrayDeque<NamedBeanHandle<Signal>> hLeftHeads

hLeftIndicator

NamedBeanHandle<Turnout> hLeftIndicator

hStopIndicator

NamedBeanHandle<Turnout> hStopIndicator

hRightIndicator

NamedBeanHandle<Turnout> hRightIndicator

hLeftInput

NamedBeanHandle<Sensor> hLeftInput

hRightInput

NamedBeanHandle<Sensor> hRightInput

CODE_LEFT

public static final CodeGroupThreeBits CODE_LEFT

CODE_STOP

public static final CodeGroupThreeBits CODE_STOP

CODE_RIGHT

public static final CodeGroupThreeBits CODE_RIGHT

CODE_OFF

public static final CodeGroupThreeBits CODE_OFF

machine

SignalHeadSection.Machine machine

lastIndication

CodeGroupThreeBits lastIndication

timeRunning

boolean timeRunning

station

Station<CodeGroupThreeBits,CodeGroupThreeBits> station

rightwardLocks

List<Lock> rightwardLocks

leftwardLocks

List<Lock> leftwardLocks

MOVEMENT_DELAY

public static int MOVEMENT_DELAY

deferIndication

boolean deferIndication

pcs

final PropertyChangeSupport pcs

Constructor Details

SignalHeadSection

SignalHeadSection()

Anonymous object only for testing

SignalHeadSection

public SignalHeadSection(List<String> rightHeads,
 List<String> leftHeads,
 String leftIndicator,
 String stopIndicator,
 String rightIndicator,
 String leftInput,
 String rightInput,
 Station<CodeGroupThreeBits,CodeGroupThreeBits> station)

Create and configure. Accepts user or system names.

Parameters:

rightHeads - Set of Signals to release when rightward travel allowed

leftHeads - Set of Signals to release when leftward travel allowed

leftIndicator - Turnout name for leftward indicator

stopIndicator - Turnout name for stop indicator

rightIndicator - Turnout name for rightward indicator

leftInput - Sensor name for rightward side of lever on panel

rightInput - Sensor name for leftward side of lever on panel

station - Station to which this Section belongs

Method Details

setLastIndication

void setLastIndication(CodeGroupThreeBits v)

getLastIndication

CodeGroupThreeBits getLastIndication()

isRunningTime

public boolean isRunningTime()

getStation

public Station<CodeGroupThreeBits,CodeGroupThreeBits> getStation()

Specified by:

getStation in interface Section<CodeGroupThreeBits,CodeGroupThreeBits>

getName

public String getName()

Description copied from interface: Section

Name of this Section. Does not include name of associated Station.

Specified by:

getName in interface Section<CodeGroupThreeBits,CodeGroupThreeBits>

Returns:

section name without station.

addRightwardLocks

public void addRightwardLocks(List<Lock> locks)

addLeftwardLocks

public void addLeftwardLocks(List<Lock> locks)

codeSendStart

public CodeGroupThreeBits codeSendStart()

Start of sending code operation:

• Set indicators off if a change has been requested
• Provide values to send over line

Specified by:

codeSendStart in interface CentralSection<CodeGroupThreeBits,CodeGroupThreeBits>

Returns:

code line value to transmit from machine to field

startRunningTime

void startRunningTime()

codeValueDelivered

public void codeValueDelivered(CodeGroupThreeBits value)

Code arrives in field. Sets the signals on the layout.

Specified by:

codeValueDelivered in interface FieldSection<CodeGroupThreeBits,CodeGroupThreeBits>

Parameters:

value - transfer value.

setListHeldState

protected void setListHeldState(Iterable<NamedBeanHandle<Signal>> list,
 boolean state)

toString

public String toString()

Overrides:

toString in class Object

indicationStart

public CodeGroupThreeBits indicationStart()

Provide state that's returned from field to machine via indication.

Specified by:

indicationStart in interface FieldSection<CodeGroupThreeBits,CodeGroupThreeBits>

Returns:

The value to be conveyed to the central CTC machine.

headShowsClear

public boolean headShowsClear(NamedBeanHandle<Signal> handle)

Clear is defined as showing above Restricting. We implement that as not Held, not RED, not Restricting.

Parameters:

handle - signal bean handle.

Returns:

true if clear.

headShowsRestricting

public boolean headShowsRestricting(NamedBeanHandle<Signal> handle)

"Restricting" means that a signal is showing FLASHRED

Parameters:

handle - signal bean handle.

Returns:

true if showing restricting.

getCurrentIndication

public CodeGroupThreeBits getCurrentIndication()

Work out current indication from layout status.

Returns:

code group.

indicationComplete

public void indicationComplete(CodeGroupThreeBits value)

Process values received from the field unit.

Specified by:

indicationComplete in interface CentralSection<CodeGroupThreeBits,CodeGroupThreeBits>

Parameters:

value - to be conveyed.

layoutSignalHeadChanged

void layoutSignalHeadChanged(PropertyChangeEvent e)

addPropertyChangeListener

@OverridingMethodsMustInvokeSuper
public void addPropertyChangeListener(PropertyChangeListener l)

removePropertyChangeListener

@OverridingMethodsMustInvokeSuper
public void removePropertyChangeListener(PropertyChangeListener l)

firePropertyChange

@OverridingMethodsMustInvokeSuper
protected void firePropertyChange(String p,
 Object old,
 Object n)