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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROMEOS_ASH_COMPONENTS_DBUS_IMAGE_BURNER_IMAGE_BURNER_CLIENT_H_
#define CHROMEOS_ASH_COMPONENTS_DBUS_IMAGE_BURNER_IMAGE_BURNER_CLIENT_H_
#include <stdint.h>
#include <memory>
#include <string>
#include "base/component_export.h"
#include "base/functional/callback.h"
#include "chromeos/dbus/common/dbus_client.h"
namespace ash {
// ImageBurnerClient is used to communicate with the image burner.
// All method should be called from the origin thread (UI thread) which
// initializes the DBusThreadManager instance.
class COMPONENT_EXPORT(ASH_DBUS_IMAGE_BURNER) ImageBurnerClient
: public chromeos::DBusClient {
public:
// Returns the global instance if initialized. May return null.
static ImageBurnerClient* Get();
// Creates and initializes the global instance. |bus| must not be null.
static void Initialize(dbus::Bus* bus);
// Creates and initializes a fake global instance.
static void InitializeFake();
// Sets a temporary instance for testing. Overrides the existing
// global instance, if any.
static void SetInstanceForTest(ImageBurnerClient* client);
// Destroys the global instance if it has been initialized.
static void Shutdown();
ImageBurnerClient(const ImageBurnerClient&) = delete;
ImageBurnerClient& operator=(const ImageBurnerClient&) = delete;
// A callback to be called when DBus method call fails.
using ErrorCallback = base::OnceCallback<void()>;
// A callback to handle burn_finished signal.
using BurnFinishedHandler =
base::OnceCallback<void(const std::string& target_path,
bool success,
const std::string& error)>;
// A callback to handle burn_progress_update signal.
using BurnProgressUpdateHandler =
base::RepeatingCallback<void(const std::string& target_path,
int64_t num_bytes_burnt,
int64_t total_size)>;
// Burns the image |from_path| to the disk |to_path|.
virtual void BurnImage(const std::string& from_path,
const std::string& to_path,
ErrorCallback error_callback) = 0;
// Sets callbacks as event handlers.
// |burn_finished_handler| is called when burn_finished signal is received.
// |burn_progress_update_handler| is called when burn_progress_update signal
// is received.
virtual void SetEventHandlers(
BurnFinishedHandler burn_finished_handler,
const BurnProgressUpdateHandler& burn_progress_update_handler) = 0;
// Resets event handlers. After calling this method, nothing is done when
// signals are received.
virtual void ResetEventHandlers() = 0;
protected:
// Initialize() should be used instead.
ImageBurnerClient();
~ImageBurnerClient() override;
};
} // namespace ash
#endif // CHROMEOS_ASH_COMPONENTS_DBUS_IMAGE_BURNER_IMAGE_BURNER_CLIENT_H_
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