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// Copyright (c) 2011 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 CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_FILE_H_
#define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_FILE_H_
#pragma once
#include <string>
#include "base/basictypes.h"
#include "base/file_path.h"
#include "content/common/content_export.h"
#include "content/public/browser/download_id.h"
#include "net/base/net_errors.h"
namespace content {
class DownloadManager;
// These objects live exclusively on the file thread and handle the writing
// operations for one download. These objects live only for the duration that
// the download is 'in progress': once the download has been completed or
// cancelled, the DownloadFile is destroyed.
class CONTENT_EXPORT DownloadFile {
public:
virtual ~DownloadFile() {}
// If calculate_hash is true, sha256 hash will be calculated.
// Returns net::OK on success, or a network error code on failure.
virtual net::Error Initialize() = 0;
// Write a new chunk of data to the file.
// Returns net::OK on success (all bytes written to the file),
// or a network error code on failure.
virtual net::Error AppendDataToFile(const char* data, size_t data_len) = 0;
// Rename the download file.
// Returns net::OK on success, or a network error code on failure.
virtual net::Error Rename(const FilePath& full_path) = 0;
// Detach the file so it is not deleted on destruction.
virtual void Detach() = 0;
// Abort the download and automatically close the file.
virtual void Cancel() = 0;
// Indicate that the download has finished. No new data will be received.
virtual void Finish() = 0;
// Informs the OS that this file came from the internet.
virtual void AnnotateWithSourceInformation() = 0;
virtual FilePath FullPath() const = 0;
virtual bool InProgress() const = 0;
virtual int64 BytesSoFar() const = 0;
virtual int64 CurrentSpeed() const = 0;
// Set |hash| with sha256 digest for the file.
// Returns true if digest is successfully calculated.
virtual bool GetHash(std::string* hash) = 0;
// Returns the current (intermediate) state of the hash as a byte string.
virtual std::string GetHashState() = 0;
// Cancels the download request associated with this file.
virtual void CancelDownloadRequest() = 0;
virtual int Id() const = 0;
virtual DownloadManager* GetDownloadManager() = 0;
virtual const DownloadId& GlobalId() const = 0;
virtual std::string DebugString() const = 0;
};
} // namespace content
#endif // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_FILE_H_
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