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https://issues.apache.org/jira/browse/PIVOT-611?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12902792#action_12902792
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A.J. commented on PIVOT-611:
----------------------------
Here it is
/**
* Check wether the listener has already been added
*
* @param listener
* @return true if and only if the given listener has already been added to
this list
*/
public boolean contains(T listener) {
if (listener == null) {
throw new IllegalArgumentException("listener is null.");
}
Node node = first;
while (node != null
&& node.listener != listener) {
node = node.next;
}
return (node != null);
}
If you want me to add it to the code base, please let me know how you want me
to proceed (svn commit ? patch ? ...)
> add a method hasListener() in ListenerList object
> -------------------------------------------------
>
> Key: PIVOT-611
> URL: https://issues.apache.org/jira/browse/PIVOT-611
> Project: Pivot
> Issue Type: Improvement
> Affects Versions: 1.5
> Reporter: A.J.
> Priority: Minor
>
> there is no easy way to determine wether a listener has already been added to
> a listener list (except by getting an iterator and traversing the list).
> it would be convenient to have 'hasListener' method in the ListenerList class
> that encapsulates this.
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