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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 WEBKIT_FILEAPI_FILE_WRITER_DELEGATE_H_
#define WEBKIT_FILEAPI_FILE_WRITER_DELEGATE_H_
#include "base/file_path.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/platform_file.h"
#include "base/time.h"
#include "net/base/file_stream.h"
#include "net/base/io_buffer.h"
#include "net/url_request/url_request.h"
#include "webkit/fileapi/file_system_operation.h"
#include "webkit/storage/webkit_storage_export.h"
namespace fileapi {
class FileStreamWriter;
class FileSystemOperationContext;
class FileSystemQuotaUtil;
class WEBKIT_STORAGE_EXPORT_PRIVATE FileWriterDelegate
: public net::URLRequest::Delegate {
public:
enum WriteProgressStatus {
SUCCESS_IO_PENDING,
SUCCESS_COMPLETED,
ERROR_WRITE_STARTED,
ERROR_WRITE_NOT_STARTED,
};
typedef base::Callback<void(base::PlatformFileError result,
int64 bytes,
WriteProgressStatus write_status)>
DelegateWriteCallback;
FileWriterDelegate(
const DelegateWriteCallback& write_callback,
scoped_ptr<FileStreamWriter> file_writer);
virtual ~FileWriterDelegate();
void Start(scoped_ptr<net::URLRequest> request);
// Cancels the current write operation. Returns true if it is ok to
// delete this instance immediately. Otherwise this will call
// |write_operation|->DidWrite() with complete=true to let the operation
// perform the final cleanup.
bool Cancel();
virtual void OnReceivedRedirect(net::URLRequest* request,
const GURL& new_url,
bool* defer_redirect) OVERRIDE;
virtual void OnAuthRequired(net::URLRequest* request,
net::AuthChallengeInfo* auth_info) OVERRIDE;
virtual void OnCertificateRequested(
net::URLRequest* request,
net::SSLCertRequestInfo* cert_request_info) OVERRIDE;
virtual void OnSSLCertificateError(net::URLRequest* request,
const net::SSLInfo& ssl_info,
bool fatal) OVERRIDE;
virtual void OnResponseStarted(net::URLRequest* request) OVERRIDE;
virtual void OnReadCompleted(net::URLRequest* request,
int bytes_read) OVERRIDE;
private:
void OnGetFileInfoAndStartRequest(
scoped_ptr<net::URLRequest> request,
base::PlatformFileError error,
const base::PlatformFileInfo& file_info);
void Read();
void OnDataReceived(int bytes_read);
void Write();
void OnDataWritten(int write_response);
void OnError(base::PlatformFileError error);
void OnProgress(int bytes_read, bool done);
void OnWriteCancelled(int status);
void FlushForCompletion(base::PlatformFileError error,
int bytes_written,
WriteProgressStatus progress_status);
void OnFlushed(base::PlatformFileError error,
int bytes_written,
WriteProgressStatus progress_status,
int flush_error);
FileSystemQuotaUtil* quota_util() const;
WriteProgressStatus GetCompletionStatusOnError() const;
DelegateWriteCallback write_callback_;
scoped_ptr<FileStreamWriter> file_stream_writer_;
base::Time last_progress_event_time_;
bool writing_started_;
int bytes_written_backlog_;
int bytes_written_;
int bytes_read_;
scoped_refptr<net::IOBufferWithSize> io_buffer_;
scoped_refptr<net::DrainableIOBuffer> cursor_;
scoped_ptr<net::URLRequest> request_;
base::WeakPtrFactory<FileWriterDelegate> weak_factory_;
};
} // namespace fileapi
#endif // WEBKIT_FILEAPI_FILE_WRITER_DELEGATE_H_
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