services/ui/public/interfaces/user_activity_monitor.mojom

// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

module ui.mojom;

interface UserActivityObserver {
  OnUserActivity();
};

interface UserIdleObserver {
  enum IdleState {
    ACTIVE,
    IDLE,
  };
  OnUserIdleStateChanged(IdleState new_state);
};

interface UserActivityMonitor {
  // Notifies the observer of user activity at most once every
  // |delay_between_notify_secs| seconds.
  AddUserActivityObserver(uint32 delay_between_notify_secs,
                          UserActivityObserver observer);

  // Notifies the observer when user is idle for more than
  // |idle_time_in_minutes| minutes. When the observer is first added, if the
  // user has already been idle for |idle_time_in_minutes|, then
  // OnUserIdleStateChanged(IDLE) is called on the observer, otherwise
  // OnUserIdleStateChanged(ACTIVE) is called.
  AddUserIdleObserver(uint32 idle_time_in_minutes, UserIdleObserver observer);
};