PropertyEditorManager.registerEditor(Range.class, RangePropertyEditor.class);
PropertyEditorManager.registerEditor(AttributeColumn.class, AttributeColumnPropertyEditor.class);
//Model management
ProjectController pc = Lookup.getDefault().lookup(ProjectController.class);
pc.addWorkspaceListener(new WorkspaceListener() {
public void initialize(Workspace workspace) {
workspace.add(new FilterModelImpl(workspace));
}