chromeos/crosapi/mojom/login_state.mojom

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

module crosapi.mojom;

[Stable, Extensible]
enum SessionState {
  [Default] kUnknown = 0,
  kInOobeScreen,
  kInLoginScreen,
  kInSession,
  kInLockScreen,
  [MinVersion=1] kInRmaScreen,
};

[Stable]
union GetSessionStateResult {
  // Implies failure.
  string error_message;

  // Implies success.
  SessionState session_state;
};

// Interface for observers of session state changes.
[Stable, Uuid="01078da6-3eaf-46fe-af13-30dde5f24b55"]
interface SessionStateChangedEventObserver {
  // Called when the mapped session state changes.
  OnSessionStateChanged@0(SessionState session_state);
};

// This API allows Lacros to query the current login state.
[Stable, Uuid="3bb04a21-64f1-46b6-9f6e-f71fc950a9dc"]
interface LoginState {
  // Adds an observer for session state changes.
  AddObserver@0(pending_remote<SessionStateChangedEventObserver> observer);

  // Returns the current session state.
  GetSessionState@1() => (GetSessionStateResult result);
};