[news.eclipse.tools.gef] Re: None-UI thread model updates and Display.ge

["CL [dnoyeb] Gilbert" <Lamont_Gilbert@xxxxxxxxxxxxxxxxx>]

Chris Aniszczyk wrote:
> CL [dnoyeb] Gilbert wrote:
>
> > Steve Jones wrote:
> >
> > > Hi,
> > >
> > > I have a multi-page editor based on 
> > > org.eclipse.ui.forms.editor.FormEditor
> > > that has a mix of GEF based pages and source/text pages that use
> > > AbstractTextEditor.
> > >
> > > GEF pages update the model and reflect changes as just fine but I'm 
> > > getting
> > > null pointer exceptions, in GEF, when I update the model from text 
> > > pages.
> > >
> > > All my model updates use background threads that ultimately call
> > > AbstractEditPart.refreshVisuals(). This fails, I think, because
> > > org.eclipse.swt.widgets.Display.getCurrent() returns null when called 
> > > from
> > > a none-UI thread.
> > >
> > > Whats the best way of dealing with this?
> > > Steve.
> >
> >
> >
> > Exactly what I do.  In my property listeners I create a runnable to 
> > handle the call to refreshVisuals().  Actually my runnable is a class 
> > member and not a local variable.
> >
> > I pass my runnable into a display I get by calling
> >
> > getViewer().getControl().getDisplay();
> >
> > I use syncExec
> >
> > CL
>
>
> Do you have an example of this? I'm curious by what you mean.
>
> Cheers,
>
> ~ Chris


class EditPart{

  public final Runnable refresher = new Runnable () {
         public void run() {
                refreshVisuals();
         }
   }



 public void propertyEvent(EventObject o){
     if(o.getType().equals(ModelEvents.PROP_NAME)){
       Display d = getViewer().getControl().getDisplay();
       d.syncExec(refresher);
     }
  }
}




CL