power_manager/powerd/system/dark_resume_interface.h

// Copyright 2018 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef POWER_MANAGER_POWERD_SYSTEM_DARK_RESUME_INTERFACE_H_
#define POWER_MANAGER_POWERD_SYSTEM_DARK_RESUME_INTERFACE_H_

namespace base {
class TimeDelta;
}  // namespace base

namespace power_manager {
namespace system {

// Returns information related to "dark resume", a mode where the system wakes
// without user interaction to display notifications, or to show alarms.
class DarkResumeInterface {
 public:
  DarkResumeInterface() {}
  virtual ~DarkResumeInterface() {}

  // Reads the system state to see if it's in a dark resume.
  virtual void HandleSuccessfulResume() = 0;

  // Returns true if the system is currently in dark resume.
  virtual bool InDarkResume() = 0;

  // Returns true if dark resume is enabled on the system.
  virtual bool IsEnabled() = 0;

  // Exits dark resume so that the system can transition to fully resumed.
  virtual void ExitDarkResume() = 0;
};

}  // namespace system
}  // namespace power_manager

#endif  // POWER_MANAGER_POWERD_SYSTEM_DARK_RESUME_INTERFACE_H_