@Override
public void undo() {
EList currentList = (EList) (style.eGet(styleFeature));
command.undo();
if (needsCreate) {
view.getStyles().remove(style);
}
}
@Override
public boolean prepare() {
style = view.getNamedStyle(styleClass, styleName);
if (needsCreate = (style == null)) {
style = (NamedStyle) NotationFactory.eINSTANCE.create(styleClass);
style.setName(styleName);
}
command = createCommand();
// return true;
return command.canExecute();
}