components/image_fetcher/core/cache/image_store_types.h

// Copyright 2018 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_IMAGE_FETCHER_CORE_CACHE_IMAGE_STORE_TYPES_H_
#define COMPONENTS_IMAGE_FETCHER_CORE_CACHE_IMAGE_STORE_TYPES_H_

#include <string>
#include <vector>

#include "base/callback.h"

namespace image_fetcher {

// Represents the initialization status of a image storage module.
enum class InitializationStatus {
  UNINITIALIZED,
  INITIALIZED,
  INIT_FAILURE,
};

// Returns the resulting raw image data as a std::string. Data will be returned
// using move semantics.
using ImageDataCallback = base::OnceCallback<void(std::string)>;

// Returns bool success when the underlying storage completes an operation.
using ImageStoreOperationCallback = base::OnceCallback<void(bool)>;

// Returns a vector of keys.
using KeysCallback = base::OnceCallback<void(std::vector<std::string>)>;

}  // namespace image_fetcher

#endif  // COMPONENTS_IMAGE_FETCHER_CORE_CACHE_IMAGE_STORE_TYPES_H_