boolean () { final Collection<PyMemberInfo<PyElement>> infos = myView.getSelectedMemberInfos(); if (infos.isEmpty()) { return true; } final PyElement element = infos.iterator().next().getMember(); final Project project = element.getProject(); if (!CommonRefactoringUtil.checkReadOnlyStatus(project, myView.getSelectedParent())) return false; final PyClass container = PyUtil.getContainingClassOrSelf(element); if (container == null || !CommonRefactoringUtil.checkReadOnlyStatus(project, container)) return false; for (final PyMemberInfo<PyElement> info : infos) { final PyElement member = info.getMember(); if (!CommonRefactoringUtil.checkReadOnlyStatus(project, member)) return false; } return true; }