components/feature_engagement/internal/noop_display_lock_controller.h

// Copyright 2017 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.

#ifndef COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_NOOP_DISPLAY_LOCK_CONTROLLER_H_
#define COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_NOOP_DISPLAY_LOCK_CONTROLLER_H_

#include <memory>

#include "base/macros.h"
#include "components/feature_engagement/internal/display_lock_controller.h"

namespace feature_engagement {
class DisplayLockHandle;

// NoopDisplayLockController never gives out display locks, and never assumes
// that the display is locked.
class NoopDisplayLockController : public DisplayLockController {
 public:
  NoopDisplayLockController();
  ~NoopDisplayLockController() override;

  // DisplayLockController implementation.
  std::unique_ptr<DisplayLockHandle> AcquireDisplayLock() override;
  bool IsDisplayLocked() const override;

 private:
  DISALLOW_COPY_AND_ASSIGN(NoopDisplayLockController);
};

}  // namespace feature_engagement

#endif  // COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_NOOP_DISPLAY_LOCK_CONTROLLER_H_