jmri.jmrix
Class ConnectionStatus

java.lang.Object
  jmri.jmrix.ConnectionStatus

public class ConnectionStatus
extends Object

Interface for classes that wish to get notification when the connection to the layout changes.

Author:

Daniel Boudreau Copyright (C) 2007

Field Summary

static String	CONNECTION_DOWN
static String	CONNECTION_UNKNOWN
static String	CONNECTION_UP

Constructor Summary

ConnectionStatus()

Method Summary

void	addConnection(String systemName, String portName)
void	addPropertyChangeListener(PropertyChangeListener l)
protected void	firePropertyChange(String p, Object old, Object n)
String	getConnectionState(String portName) get the status of a communication port
static ConnectionStatus	instance()
boolean	isConnectionOk(String portName) Returns status of a communication port
void	removePropertyChangeListener(PropertyChangeListener l)
void	setConnectionState(String portName, String state) sets the connection state of a communication port

Methods inherited from class java.lang.Object

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

Field Detail

CONNECTION_UNKNOWN

public static final String CONNECTION_UNKNOWN

See Also:

Constant Field Values

CONNECTION_UP

public static final String CONNECTION_UP

See Also:

Constant Field Values

CONNECTION_DOWN

public static final String CONNECTION_DOWN

See Also:

Constant Field Values

Constructor Detail

ConnectionStatus

public ConnectionStatus()

Method Detail

instance

public static ConnectionStatus instance()

addConnection

public void addConnection(String systemName,
                          String portName)

setConnectionState

public void setConnectionState(String portName,
                               String state)

sets the connection state of a communication port

Parameters:

portName - = communication port name

state -

getConnectionState

public String getConnectionState(String portName)

get the status of a communication port

Parameters:

portName -

Returns:

status string

isConnectionOk

public boolean isConnectionOk(String portName)

Returns status of a communication port

Parameters:

portName -

Returns:

true if port connection is operational or unknown, false if not

addPropertyChangeListener

public void addPropertyChangeListener(PropertyChangeListener l)

firePropertyChange

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

removePropertyChangeListener

public void removePropertyChangeListener(PropertyChangeListener l)