// Copyright 2015 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_ARC_POWER_ARC_POWER_BRIDGE_H_
#define COMPONENTS_ARC_POWER_ARC_POWER_BRIDGE_H_

#include <map>

#include "base/macros.h"
#include "components/arc/arc_service.h"
#include "components/arc/common/power.mojom.h"
#include "components/arc/instance_holder.h"
#include "mojo/public/cpp/bindings/binding.h"
#include "ui/display/chromeos/display_configurator.h"

namespace arc {

class ArcBridgeService;

// ARC Power Client sets power management policy based on requests from
// ARC instances.
class ArcPowerBridge : public ArcService,
                       public InstanceHolder<mojom::PowerInstance>::Observer,
                       public ui::DisplayConfigurator::Observer,
                       public mojom::PowerHost {
 public:
  explicit ArcPowerBridge(ArcBridgeService* bridge_service);
  ~ArcPowerBridge() override;

  // InstanceHolder<mojom::PowerInstance>::Observer overrides.
  void OnInstanceReady() override;
  void OnInstanceClosed() override;

  // DisplayConfigurator::Observer overrides.
  void OnPowerStateChanged(chromeos::DisplayPowerState power_state) override;

  // mojom::PowerHost overrides.
  void OnAcquireDisplayWakeLock(mojom::DisplayWakeLockType type) override;
  void OnReleaseDisplayWakeLock(mojom::DisplayWakeLockType type) override;

  void IsDisplayOn(const IsDisplayOnCallback& callback) override;

 private:
  void ReleaseAllDisplayWakeLocks();

  mojo::Binding<mojom::PowerHost> binding_;

  // Stores a mapping of type -> wake lock ID for all wake locks
  // held by ARC.
  std::multimap<mojom::DisplayWakeLockType, int> wake_locks_;

  DISALLOW_COPY_AND_ASSIGN(ArcPowerBridge);
};

}  // namespace arc

#endif  // COMPONENTS_ARC_POWER_ARC_POWER_BRIDGE_H_