Re: [udig-devel] notify if layer was added/removed

[konfri@xxxxxx]

Hey Jody,

I'm adding the compositionListener to the map at the end of my createPartControl method. The upcoming process clears the map - this just happens if my view is shown on start up. I would guess, that this behavior is somehow related to the start up order of my views. 

Anyway, I'm adding my compositionListener instance each time the user performs a task (the map container is a set, so it does not keep duplicates).

Thanks for your time.

Kon


-------- Original-Nachricht --------
> Datum: Tue, 14 Dec 2010 12:20:34 +1000
> Von: Jody Garnett <jody.garnett@xxxxxxxxx>
> An: User-friendly Desktop Internet GIS <udig-devel@xxxxxxxxxxxxxxxxxxxxx>
> Betreff: Re: [udig-devel] notify if layer was added/removed

> Not sure; try going further down that page where the EMF notification
> event system allows you access to everything.
> 
> If you can step through the code where the IMapCompositionListener is
> called; perhaps you can tell us where it is being missed?
> 
> Jody
> 
> On 14/12/2010, at 2:39 AM, konfri@xxxxxx wrote:
> 
> > Hey,
> > 
> > I need to perform some task if a layer was added/removed. For that, I
> found this code snipped on
> http://www.refractions.net:8080/confluence/display/DEV/How+to+tell+when+something+changes:
> > 
> > ApplicationGIS.getActiveMap().addMapCompositionListener(new
> IMapCompositionListener(){
> >    public void changed( MapCompositionEvent event ) {
> >        System.out.println("changed");
> > 
> >        if (event.getType() == EventType.ADDED) {
> >            System.out.println("Layer added");
> >        } else if (event.getType() == EventType.REMOVED) {
> >            System.out.println("Layer removed");
> >        }
> >        //..
> >    }
> > });
> > 
> > Unfortunately, it is never trigged. Is there something wrong or
> outdated? Thank you!
> > 
> > Kon
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