mysterious Jlist behaviour (valuechanged)

[wnstnsmith]

Dear all,

Every time I klick in a Jlist to change its value, it turns out
valueChanged() is called twice, both times with the new seleceted index
value. I am not doubleclicking inadvertently.
I don't like it, because alle the work that is to be done on changing the
selected value is carried out twice as well, of course. Does anybody know
why two valauechanged events are sent and how I can get rid of this
behaviour?

tia,

Winston

 

[Lee Weiner]

Dear all,

Every time I klick in a Jlist to change its value, it turns out
valueChanged() is called twice, both times with the new seleceted index
value. I am not doubleclicking inadvertently.
I don't like it, because alle the work that is to be done on changing the
selected value is carried out twice as well, of course. Does anybody know
why two valauechanged events are sent and how I can get rid of this
behaviour?

tia,

Winston

I don't know if you can get rid of this behavior, but you can deal with it.
In the valueChanged() method, there is a ListSelectionEvent object available,
which contains a getValueIsAdjusting() method. Call this method and, if it
returns true, do not execute your code. If it returns false, execute the
code.

Lee Weiner
lee AT leeweiner DOT org