Package org.openstreetmap.josm.tools

Class ListenerList.TracingListenerList<T>

java.lang.Object

org.openstreetmap.josm.tools.ListenerList<T>

org.openstreetmap.josm.tools.ListenerList.TracingListenerList<T>

Type Parameters:

T - The type of listener contained in this list

Enclosing class:

ListenerList<T>

public static class ListenerList.TracingListenerList<T>
extends ListenerList<T>

This is a special ListenerList that traces calls to the add/remove methods. This may cause memory leaks.

Nested Class Summary

Nested classes/interfaces inherited from class org.openstreetmap.josm.tools.ListenerList

ListenerList.EventFirerer<T>, ListenerList.TracingListenerList<T>

Field Summary

Fields

Modifier and Type	Field	Description
private java.util.HashMap<T,java.lang.StackTraceElement[]>	listenersAdded
private java.util.HashMap<T,java.lang.StackTraceElement[]>	listenersRemoved

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	TracingListenerList()

Method Summary

Modifier and Type	Method	Description
void	addListener(T listener)	Adds a listener.
void	addWeakListener(T listener)	Adds a listener.
private static void	dumpStack(java.lang.StackTraceElement... stackTraceElements)
protected void	failAdd(T listener)
protected void	failRemove(T listener)
void	removeListener(T listener)	Removes a listener.

Methods inherited from class org.openstreetmap.josm.tools.ListenerList

containsListener, create, createUnchecked, fireEvent, hasListeners

Methods inherited from class java.lang.Object

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

Field Detail

listenersAdded

private final java.util.HashMap<T,java.lang.StackTraceElement[]> listenersAdded

listenersRemoved

private final java.util.HashMap<T,java.lang.StackTraceElement[]> listenersRemoved

Constructor Detail

TracingListenerList

protected TracingListenerList()

Method Detail

addListener

public void addListener(T listener)

Description copied from class: ListenerList

Adds a listener.

Overrides:

addListener in class ListenerList<T>

Parameters:

listener - The listener to add.

addWeakListener

public void addWeakListener(T listener)

Description copied from class: ListenerList

Adds a listener. The listener will not prevent the object from being garbage collected.

This should be used with care. It is better to add good cleanup code.

Overrides:

addWeakListener in class ListenerList<T>

Parameters:

listener - The listener.

removeListener

public void removeListener(T listener)

Description copied from class: ListenerList

Removes a listener.

Overrides:

removeListener in class ListenerList<T>

Parameters:

listener - The listener to remove.

failAdd

protected void failAdd(T listener)

Overrides:

failAdd in class ListenerList<T>

failRemove

protected void failRemove(T listener)

Overrides:

failRemove in class ListenerList<T>

dumpStack

private static void dumpStack(java.lang.StackTraceElement... stackTraceElements)