if (on) fViewer.setSorter(fSorter); else fViewer.setSorter(null);
BusyIndicator.showWhile(fViewer.getControl().getDisplay(), new Runnable() { public void run() { if (on) fViewer.setSorter(fSorter); else fViewer.setSorter(null); } });
	private void valueChanged(boolean on, boolean store) {		setChecked(on);		if (on)			fViewer.setSorter(fSorter);		else			fViewer.setSorter(null);		if (store)			JavaPlugin.getDefault().getPreferenceStore().setValue(fPreferenceKey, on);	}