l.setLayoutData(new GridData(GridData.BEGINNING, GridData.FILL, false, false));
filelist = new ListViewer(this, SWT.BORDER);
filelist.getList().setLayoutData(new GridData(GridData.FILL, GridData.FILL, true, true));
filelist.setContentProvider(ArrayContentProvider.getInstance());
filelist.setLabelProvider(new LabelProvider());
filelist.addSelectionChangedListener(new ISelectionChangedListener() {
public void selectionChanged(SelectionChangedEvent event) {
edit.setEnabled(!event.getSelection().isEmpty());
remove.setEnabled(!event.getSelection().isEmpty());
updateUpDownEnableButtons(true);