🚀 go-pugleaf

A possible fix for this would be to remove the listener when
you programatically set the value and then add it again. This way
you don't need the boolean.

On panel open, if you set the value before adding the listener, it
won't be called.

Sandy Mustard

Stan Reinis wrote:
> 
> We have a JComboBox on a JPanel.
> 
> We need to call a method when the user changes the selected item
> in the combobox.  We have been using ActionEventListener to
> accomplish this.  However, if the combobox already has a value
> assigned to it when the panel is opened, we do not want to call
> this event.  Unfortunately (for us), an ActionEvent is fired when
> we programatically set the value in the combobox.
> 
> To overcome this, we added a boolean that is set to false just before
> we programatically change the value in the combobox.  Then we change
> it back.
> 
> Occasionally it happens that the Action is processed before the boolean
> changes.  Apparently Actions are run on a different thread than the
> main execution, which causes a race condition.
> 
> What can we do here?
> 
> Stan
> Terren Corporation