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// Copyright (c) 2012 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_IMPL_H_
#define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_FILE_IMPL_H_
#include "content/browser/download/download_file.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/time.h"
#include "base/timer.h"
#include "content/browser/download/base_file.h"
#include "content/browser/download/byte_stream.h"
#include "content/browser/download/download_request_handle.h"
#include "net/base/net_log.h"
struct DownloadCreateInfo;
namespace content {
class ByteStreamReader;
class DownloadManager;
class PowerSaveBlocker;
}
class CONTENT_EXPORT DownloadFileImpl : virtual public content::DownloadFile {
public:
// Takes ownership of the object pointed to by |request_handle|.
// |bound_net_log| will be used for logging the download file's events.
DownloadFileImpl(const DownloadCreateInfo* info,
scoped_ptr<content::ByteStreamReader> stream,
DownloadRequestHandleInterface* request_handle,
scoped_refptr<content::DownloadManager> download_manager,
bool calculate_hash,
scoped_ptr<content::PowerSaveBlocker> power_save_blocker,
const net::BoundNetLog& bound_net_log);
virtual ~DownloadFileImpl();
// DownloadFile functions.
virtual content::DownloadInterruptReason Initialize() OVERRIDE;
virtual content::DownloadInterruptReason Rename(
const FilePath& full_path) OVERRIDE;
virtual void Detach() OVERRIDE;
virtual void Cancel() OVERRIDE;
virtual void AnnotateWithSourceInformation() OVERRIDE;
virtual FilePath FullPath() const OVERRIDE;
virtual bool InProgress() const OVERRIDE;
virtual int64 BytesSoFar() const OVERRIDE;
virtual int64 CurrentSpeed() const OVERRIDE;
virtual bool GetHash(std::string* hash) OVERRIDE;
virtual std::string GetHashState() OVERRIDE;
virtual void CancelDownloadRequest() OVERRIDE;
virtual int Id() const OVERRIDE;
virtual content::DownloadManager* GetDownloadManager() OVERRIDE;
virtual const content::DownloadId& GlobalId() const OVERRIDE;
virtual std::string DebugString() const OVERRIDE;
protected:
// For test class overrides.
virtual content::DownloadInterruptReason AppendDataToFile(
const char* data, size_t data_len);
private:
// Called when there's some activity on stream_reader_ that needs to be
// handled.
void StreamActive();
// Send updates on our progress.
void SendUpdate();
// The base file instance.
BaseFile file_;
// The stream through which data comes.
// TODO(rdsmith): Move this into BaseFile; requires using the same
// stream semantics in SavePackage. Alternatively, replace SaveFile
// with DownloadFile and get rid of BaseFile.
scoped_ptr<content::ByteStreamReader> stream_reader_;
// The unique identifier for this download, assigned at creation by
// the DownloadFileManager for its internal record keeping.
content::DownloadId id_;
// Used to trigger progress updates.
scoped_ptr<base::RepeatingTimer<DownloadFileImpl> > update_timer_;
// The handle to the request information. Used for operations outside the
// download system, specifically canceling a download.
scoped_ptr<DownloadRequestHandleInterface> request_handle_;
// DownloadManager this download belongs to.
scoped_refptr<content::DownloadManager> download_manager_;
// Statistics
size_t bytes_seen_;
base::TimeDelta disk_writes_time_;
base::TimeTicks download_start_;
net::BoundNetLog bound_net_log_;
base::WeakPtrFactory<DownloadFileImpl> weak_factory_;
// RAII handle to keep the system from sleeping while we're downloading.
scoped_ptr<content::PowerSaveBlocker> power_save_blocker_;
DISALLOW_COPY_AND_ASSIGN(DownloadFileImpl);
};
#endif // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_FILE_IMPL_H_
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