jmri
Interface Sensor

All Superinterfaces:

NamedBean

All Known Implementing Classes:

AbstractSensor, AcelaSensor, CbusSensor, LnSensor, NceSensor, RpsSensor, SerialSensor, SerialSensor, SerialSensor, SerialSensor, SerialSensor, SerialSensor, XNetSensor

public interface Sensor
extends NamedBean

General input device representation. Often subclassed for specific types of sensors.

This file is part of JMRI.

JMRI is free software; you can redistribute it and/or modify it under the terms of version 2 of the GNU General Public License as published by the Free Software Foundation. See the "COPYING" file for a copy of this license.

JMRI is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

Author:

Bob Jacobsen Copyright (C) 2001

Field Summary

static int	ACTIVE
static int	INACTIVE

Fields inherited from interface jmri.NamedBean

INCONSISTENT, UNKNOWN

Method Summary

void	addPropertyChangeListener(PropertyChangeListener l) Request a call-back when the bound KnownState property changes.
void	dispose() Remove references to and from this object, so that it can eventually be garbage-collected.
boolean	getInverted() Get the inverted state.
int	getKnownState() Known state on layout is a bound parameter
void	removePropertyChangeListener(PropertyChangeListener l) Remove a request for a call-back when a bound property changes.
void	requestUpdateFromLayout() Request an update from the layout soft/hardware.
void	setInverted(boolean inverted) Control whether the actual sensor input is considered to be inverted, e.g. the normal electrical signal that results in an ACTIVE state now results in an INACTIVE state.
void	setKnownState(int newState) Potentially allow the user to set the known state on the layout.

Methods inherited from interface jmri.NamedBean

getComment, getNumPropertyChangeListeners, getState, getSystemName, getUserName, setComment, setState, setUserName

Field Detail

ACTIVE

static final int ACTIVE

See Also:

Constant Field Values

INACTIVE

static final int INACTIVE

See Also:

Constant Field Values

Method Detail

getKnownState

int getKnownState()

Known state on layout is a bound parameter

Returns:

known state value

setKnownState

void setKnownState(int newState)
                   throws JmriException

Potentially allow the user to set the known state on the layout. This might not always be available, depending on the limits of the underlying system and implementation.

Throws:

JmriException

requestUpdateFromLayout

void requestUpdateFromLayout()

Request an update from the layout soft/hardware. May not even happen, and if it does it will happen later; listen for the result.

setInverted

void setInverted(boolean inverted)

Control whether the actual sensor input is considered to be inverted, e.g. the normal electrical signal that results in an ACTIVE state now results in an INACTIVE state.

getInverted

boolean getInverted()

Get the inverted state. If true, the electrical signal that results in an ACTIVE state now results in an INACTIVE state.

addPropertyChangeListener

void addPropertyChangeListener(PropertyChangeListener l)

Request a call-back when the bound KnownState property changes.

Specified by:

addPropertyChangeListener in interface NamedBean

removePropertyChangeListener

void removePropertyChangeListener(PropertyChangeListener l)

Remove a request for a call-back when a bound property changes.

Specified by:

removePropertyChangeListener in interface NamedBean

dispose

void dispose()

Remove references to and from this object, so that it can eventually be garbage-collected.

Specified by:

dispose in interface NamedBean