[news.eclipse.technology.nebula] Re: select item in the gallery widget

[Nicolas Richeton <Nicolas.richeton@xxxxxxxxx>]

Vicente Rico Guillén a écrit :

> It doesn't work. I get a nullpointerexception..
> ------------------------------------------------------------------------------- 
>
> java.lang.NullPointerException
>     at 
> org.eclipse.nebula.widgets.gallery.AbstractGridGroupRenderer.getVisibleItems(AbstractGridGroupRenderer.java:280) 
>
>     at 
> org.eclipse.nebula.widgets.gallery.NoGroupRenderer.draw(NoGroupRenderer.java:43) 
>
>     at 
> org.eclipse.nebula.widgets.gallery.Gallery._drawGroup(Gallery.java:1339)
>     at 
> org.eclipse.nebula.widgets.gallery.Gallery.onPaint(Gallery.java:1183)
>     at 
> org.eclipse.nebula.widgets.gallery.Gallery$2.paintControl(Gallery.java:586)
>     at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
> -------------------------------------------------------------------------------- 
Please open a bug for this NPE
> I show you the main code related to this:
>
> ------------------------------------------------
> public void selectItemNumber(int number) {           
>         if (GlobalSettings.moviesList.size() > 0) {
>             moviesGallery.setFocus();
>             moviesGallery.setSelection( new GalleryItem[]{ 
> moviesGallery.getItem( 0 ) } );

You get a NPE because you're trying to select a group, not an item

Replace by
moviesGallery.setSelection( new GalleryItem[]{  moviesGallery.getItem( 0 
).getItem(0) } );

It should work.

--

Nicolas