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// Copyright 2014 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 CHROME_BROWSER_EXTENSIONS_API_IMAGE_WRITER_PRIVATE_IMAGE_WRITER_UTILITY_CLIENT_H_
#define CHROME_BROWSER_EXTENSIONS_API_IMAGE_WRITER_PRIVATE_IMAGE_WRITER_UTILITY_CLIENT_H_
#include "base/files/file_path.h"
#include "base/memory/weak_ptr.h"
#include "base/threading/sequenced_worker_pool.h"
#include "content/public/browser/utility_process_host.h"
#include "content/public/browser/utility_process_host_client.h"
// Writes a disk image to a device inside the utility process.
class ImageWriterUtilityClient : public content::UtilityProcessHostClient {
public:
typedef base::Callback<void()> CancelCallback;
typedef base::Callback<void()> SuccessCallback;
typedef base::Callback<void(int64)> ProgressCallback;
typedef base::Callback<void(const std::string&)> ErrorCallback;
ImageWriterUtilityClient();
// Starts the write.
// |progress_callback|: Called periodically with the count of bytes processed.
// |success_callback|: Called at successful completion.
// |error_callback|: Called with an error message on failure.
// |source|: The path to the source file to read data from.
// |target|: The path to the target device to write the image file to.
virtual void Write(const ProgressCallback& progress_callback,
const SuccessCallback& success_callback,
const ErrorCallback& error_callback,
const base::FilePath& source,
const base::FilePath& target);
// Starts a verification.
// |progress_callback|: Called periodically with the count of bytes processed.
// |success_callback|: Called at successful completion.
// |error_callback|: Called with an error message on failure.
// |source|: The path to the source file to read data from.
// |target|: The path to the target device to write the image file to.
virtual void Verify(const ProgressCallback& progress_callback,
const SuccessCallback& success_callback,
const ErrorCallback& error_callback,
const base::FilePath& source,
const base::FilePath& target);
// Cancels any pending write or verification.
// |cancel_callback|: Called when the cancel has actually occurred.
virtual void Cancel(const CancelCallback& cancel_callback);
// Shuts down the Utility thread that may have been created.
virtual void Shutdown();
protected:
// It's a reference-counted object, so destructor is not public.
~ImageWriterUtilityClient() override;
private:
// Ensures the UtilityProcessHost has been created.
void StartHost();
// UtilityProcessHostClient implementation.
void OnProcessCrashed(int exit_code) override;
void OnProcessLaunchFailed() override;
bool OnMessageReceived(const IPC::Message& message) override;
virtual bool Send(IPC::Message* msg);
// IPC message handlers.
void OnWriteImageSucceeded();
void OnWriteImageCancelled();
void OnWriteImageFailed(const std::string& message);
void OnWriteImageProgress(int64 progress);
CancelCallback cancel_callback_;
ProgressCallback progress_callback_;
SuccessCallback success_callback_;
ErrorCallback error_callback_;
base::WeakPtr<content::UtilityProcessHost> utility_process_host_;
scoped_refptr<base::MessageLoopProxy> message_loop_proxy_;
DISALLOW_COPY_AND_ASSIGN(ImageWriterUtilityClient);
};
#endif // CHROME_BROWSER_EXTENSIONS_API_IMAGE_WRITER_PRIVATE_IMAGE_WRITER_UTILITY_CLIENT_H_
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