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// Copyright (c) 2010 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_DOWNLOAD_DOWNLOAD_FILE_H_
#define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_FILE_H_
#pragma once
#include "base/basictypes.h"
#include "base/file_path.h"
#include "base/hash_tables.h"
#include "base/linked_ptr.h"
#include "chrome/browser/download/download_types.h"
#include "chrome/browser/power_save_blocker.h"
#include "googleurl/src/gurl.h"
struct DownloadCreateInfo;
class ResourceDispatcherHost;
// These objects live exclusively on the download 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 DownloadFile {
public:
explicit DownloadFile(const DownloadCreateInfo* info);
virtual ~DownloadFile();
bool Initialize();
// Write a new chunk of data to the file. Returns true on success (all bytes
// written to the file).
bool AppendDataToFile(const char* data, size_t data_len);
// Abort the download and automatically close the file.
void Cancel();
// Rename the download file. Returns 'true' if the rename was successful.
// path_renamed_ is set true only if |is_final_rename| is true.
// Marked virtual for testing.
virtual bool Rename(const FilePath& full_path, bool is_final_rename);
// Indicate that the download has finished. No new data will be received.
void Finish();
// Informs the OS that this file came from the internet.
void AnnotateWithSourceInformation();
// Deletes its .crdownload intermediate file.
// Marked virtual for testing.
virtual void DeleteCrDownload();
// Cancels the download request associated with this file.
void CancelDownloadRequest(ResourceDispatcherHost* rdh);
// Accessors.
int id() const { return id_; }
bool path_renamed() const { return path_renamed_; }
bool in_progress() const { return file_stream_ != NULL; }
private:
// Open or Close the OS file stream. The stream is opened in the constructor
// based on creation information passed to it, and automatically closed in
// the destructor.
void Close();
bool Open();
// OS file stream for writing
linked_ptr<net::FileStream> file_stream_;
// Source URL for the file being downloaded.
GURL source_url_;
// The URL where the download was initiated.
GURL referrer_url_;
// The unique identifier for this download, assigned at creation by
// the DownloadFileManager for its internal record keeping.
int id_;
// IDs for looking up the tab we are associated with.
int child_id_;
// Handle for informing the ResourceDispatcherHost of a UI based cancel.
int request_id_;
// Full path to the downloaded file.
FilePath full_path_;
// Whether the download is still using its initial temporary path.
bool path_renamed_;
// RAII handle to keep the system from sleeping while we're downloading.
PowerSaveBlocker dont_sleep_;
DISALLOW_COPY_AND_ASSIGN(DownloadFile);
};
#endif // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_FILE_H_
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