jmri
Class AbstractManager

java.lang.Object
  jmri.AbstractManager

All Implemented Interfaces:

PropertyChangeListener, EventListener, Manager

Direct Known Subclasses:

AbstractLightManager, AbstractMemoryManager, AbstractReporterManager, AbstractSensorManager, AbstractSignalHeadManager, AbstractTurnoutManager, BlockManager, DefaultConditionalManager, DefaultLogixManager, DefaultRouteManager, LayoutBlockManager, SectionManager, TransitManager

public abstract class AbstractManager
extends Object
implements Manager, PropertyChangeListener

Abstract partial implementation for all Manager-type classes.

Note that this does not enforce any particular system naming convention at the present time. They're just names...

Author:

Bob Jacobsen Copyright (C) 2003

Field Summary

protected Hashtable	_tsys
protected Hashtable	_tuser

Constructor Summary

AbstractManager()

Method Summary

void	addPropertyChangeListener(PropertyChangeListener l) At a minimum, subclasses must notify of changes to the list of available NamedBeans; they may have other properties that will also notify.
void	deregister(NamedBean s) Forget a NamedBean Object created outside the manager.
void	dispose() Free resources when no longer used.
protected void	firePropertyChange(String p, Object old, Object n)
protected Object	getInstanceBySystemName(String systemName) Locate an instance based on a system name.
protected Object	getInstanceByUserName(String userName) Locate an instance based on a user name.
List	getSystemNameList()
String	makeSystemName(String s)
void	propertyChange(PropertyChangeEvent e) The PropertyChangeListener interface in this class is intended to keep track of user name changes to individual NamedBeans.
void	register(NamedBean s) Remember a NamedBean Object created outside the manager.
void	removePropertyChangeListener(PropertyChangeListener l) At a minimum, subclasses must notify of changes to the list of available NamedBeans; they may have other properties that will also notify.

Methods inherited from class java.lang.Object

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

Methods inherited from interface jmri.Manager

systemLetter, typeLetter

Field Detail

_tsys

protected Hashtable _tsys

_tuser

protected Hashtable _tuser

Constructor Detail

AbstractManager

public AbstractManager()

Method Detail

makeSystemName

public String makeSystemName(String s)

Specified by:

makeSystemName in interface Manager

Returns:

A system name from a user input, typically a number.

dispose

public void dispose()

Description copied from interface: Manager

Free resources when no longer used. Specifically, remove all references to and from this object, so it can be garbage-collected.

Specified by:

dispose in interface Manager

getInstanceBySystemName

protected Object getInstanceBySystemName(String systemName)

Locate an instance based on a system name. Returns null if no instance already exists. This is intended to be used by concrete classes to implement their getBySystemName method. We can't call it that here because Java doesn't have polymorphic return types.

Returns:

requested Turnout object or null if none exists

getInstanceByUserName

protected Object getInstanceByUserName(String userName)

Locate an instance based on a user name. Returns null if no instance already exists. This is intended to be used by concrete classes to implement their getBySystemName method. We cant call it that here because Java doesn't have polymorphic return types.

Returns:

requested Turnout object or null if none exists

register

public void register(NamedBean s)

Remember a NamedBean Object created outside the manager.

The non-system-specific SignalHeadManagers use this method extensively.

Specified by:

register in interface Manager

deregister

public void deregister(NamedBean s)

Forget a NamedBean Object created outside the manager.

The non-system-specific RouteManager uses this method.

Specified by:

deregister in interface Manager

propertyChange

public void propertyChange(PropertyChangeEvent e)

The PropertyChangeListener interface in this class is intended to keep track of user name changes to individual NamedBeans. It is not completely implemented yet. In particular, listeners are not added to newly registered objects.

Specified by:

propertyChange in interface PropertyChangeListener

getSystemNameList

public List getSystemNameList()

Specified by:

getSystemNameList in interface Manager

addPropertyChangeListener

public void addPropertyChangeListener(PropertyChangeListener l)

Description copied from interface: Manager

At a minimum, subclasses must notify of changes to the list of available NamedBeans; they may have other properties that will also notify.

Specified by:

addPropertyChangeListener in interface Manager

removePropertyChangeListener

public void removePropertyChangeListener(PropertyChangeListener l)

Description copied from interface: Manager

At a minimum, subclasses must notify of changes to the list of available NamedBeans; they may have other properties that will also notify.

Specified by:

removePropertyChangeListener in interface Manager

firePropertyChange

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