data1.widthHint = 40;
addButton.setLayoutData(data1);
addButton.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
IAttribute property = new Attribute();
property.createNew(state);
PropertyEditorDialog dialog = new PropertyEditorDialog(
parentShell, property);
if (dialog.open() == Dialog.OK) {
state.addAttribute(property);
configsViewer.refresh(true);