chromium/chrome/browser/ash/policy/external_data/handlers/device_wallpaper_image_external_data_handler.h

// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROME_BROWSER_ASH_POLICY_EXTERNAL_DATA_HANDLERS_DEVICE_WALLPAPER_IMAGE_EXTERNAL_DATA_HANDLER_H_
#define CHROME_BROWSER_ASH_POLICY_EXTERNAL_DATA_HANDLERS_DEVICE_WALLPAPER_IMAGE_EXTERNAL_DATA_HANDLER_H_

#include <memory>
#include <string>

#include "base/memory/raw_ptr.h"
#include "chrome/browser/ash/policy/external_data/handlers/device_cloud_external_data_policy_handler.h"

class PrefRegistrySimple;
class PrefService;

namespace policy {

class PolicyService;

// This class observes the device setting "DeviceWallpaperImage", and sets
// "policy.device_wallpaper_image_file_path" pref appropriately based on the
// file path with fetched wallpaper image.
class DeviceWallpaperImageExternalDataHandler final
    : public DeviceCloudExternalDataPolicyHandler {
 public:
  DeviceWallpaperImageExternalDataHandler(PrefService* local_state,
                                          PolicyService* policy_service);

  DeviceWallpaperImageExternalDataHandler(
      const DeviceWallpaperImageExternalDataHandler&) = delete;
  DeviceWallpaperImageExternalDataHandler& operator=(
      const DeviceWallpaperImageExternalDataHandler&) = delete;

  ~DeviceWallpaperImageExternalDataHandler() override;

  static void RegisterPrefs(PrefRegistrySimple* registry);

  // DeviceCloudExternalDataPolicyHandler:
  void OnDeviceExternalDataCleared(const std::string& policy) override;
  void OnDeviceExternalDataFetched(const std::string& policy,
                                   std::unique_ptr<std::string> data,
                                   const base::FilePath& file_path) override;
  void Shutdown() override;

 private:
  const raw_ptr<PrefService, DanglingUntriaged> local_state_;

  std::unique_ptr<DeviceCloudExternalDataPolicyObserver>
      device_wallpaper_image_observer_;
};

}  // namespace policy

#endif  // CHROME_BROWSER_ASH_POLICY_EXTERNAL_DATA_HANDLERS_DEVICE_WALLPAPER_IMAGE_EXTERNAL_DATA_HANDLER_H_