if (selected.size() == 1) fEditButton.setEnabled(task == NLSSubstitution.TRANSLATE);
	private void setSelectedTasks(int task){		Assert.isTrue(task == NLSSubstitution.TRANSLATE 				   || task == NLSSubstitution.NEVER_TRANSLATE				   || task == NLSSubstitution.SKIP);		Set selected= getSelectedTableEntries();				String[] props= new String[] { PROPERTIES[TASK_PROP] };		for (Iterator iter= selected.iterator(); iter.hasNext();) {			((NLSSubstitution) iter.next()).task= task;		}		fViewer.update(selected.toArray(), props);		updateLabels();		fViewer.getControl().setFocus();	}	