org.eclipse.jface.viewers.ArrayContentProvider.getElements(Object)

Hi,

I have a JFace TableViewer that is bound to an EMF model like so:

<TableViewer x:Name="f_v_elements" input="{Binding Path=elements}">
  <TableViewer.contentProvider>
    <part:ElementsContentProvider/>
  </TableViewer.contentProvider>
</TableViewer>

And a content provider:

Class ElementsContentProvider implements IStructuredContentProvider {
  @Override
  public Object[] getElements(Object inputElement) {
    System.out.println(inputElement.getClass());
  }
  ...
}

Before opening the view, I set the DATACONTEXT to an instance of my EMF model.
What I see is that the IStructuredContentProvider.getElements is being called twice.

In the first call, inputElement is of type org.eclipse.emf.ecore.util.EObjectContainmentEList which is a list with elements of my EMF model. That's OK.

The second call, inputElement is of type class org.eclipse.core.databinding.observable.list.WritableList.
Where did that came from, and what do I do with it?

Thanks,
-S.

I get it, but why does the setInput method being called twice? why not just one time with a WritableList?