com.jstatcom.model
Class JSCDataEventSupport

java.lang.Object
  com.jstatcom.model.JSCDataEventSupport

public final class JSCDataEventSupport
extends java.lang.Object

A support class for JSCData objects that manages adding, removing and notification of the different JSCDataListener.

This class is not thread-save but clients must handle synchronization.

Author:

Markus Kraetzig

Constructor Summary

JSCDataEventSupport()
JSCDataEventSupport constructor.

Method Summary

void	addListener(JSCDataListener evtListener, JSCDataEventTypes evtType) Adds evtListener to the list of listeners for events of type evtType.
void	dispatchEvent(JSCDataEvent evt) Dispatches evt by calling valueChanged of all registered listeners to events of type evt.getType.
java.util.List<JSCDataListener>	getListenersForType(JSCDataEventTypes evtType) Gets a list with all registered listeners for evtType.
void	removeListener(JSCDataListener evtListener) Removes evtListener from all listener lists.
java.lang.String	toString() Gets a string representation of this.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

JSCDataEventSupport

public JSCDataEventSupport()

JSCDataEventSupport constructor.

Method Detail

addListener

public void addListener(JSCDataListener evtListener,
                        JSCDataEventTypes evtType)

Adds evtListener to the list of listeners for events of type evtType.

Parameters:

evtListener - the JSCDataListener that gets notified whenever an event of evtType occurs

evtType - the event type

Throws:

java.lang.IllegalArgumentException - if (evtListener == null || evtType == null)

dispatchEvent

public void dispatchEvent(JSCDataEvent evt)

Dispatches evt by calling valueChanged of all registered listeners to events of type evt.getType.

Parameters:

evt - the event to be dispatched

Throws:

java.lang.IllegalArgumentException - if (evt == null)

getListenersForType

public java.util.List<JSCDataListener> getListenersForType(JSCDataEventTypes evtType)

Gets a list with all registered listeners for evtType.

Parameters:

evtType - the event type

Returns:

a copy of the respective list or an initialized list instance with size == 0 if no listeners are registered for evtType

removeListener

public void removeListener(JSCDataListener evtListener)

Removes evtListener from all listener lists. Nothing happens if evtListener is currently not a listener.

Parameters:

evtListener - the JSCDataListener to be removed

Throws:

java.lang.IllegalArgumentException - if (evtListener == null)

toString

public java.lang.String toString()

Gets a string representation of this.

Overrides:

toString in class java.lang.Object

Returns:

informative string representation