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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_SANDBOX_FILE_STREAM_WRITER_H_
#define WEBKIT_FILEAPI_SANDBOX_FILE_STREAM_WRITER_H_
#include "base/file_path.h"
#include "base/memory/scoped_ptr.h"
#include "base/platform_file.h"
#include "googleurl/src/gurl.h"
#include "webkit/fileapi/file_stream_writer.h"
#include "webkit/fileapi/file_system_types.h"
#include "webkit/fileapi/file_system_url.h"
#include "webkit/fileapi/task_runner_bound_observer_list.h"
#include "webkit/quota/quota_types.h"
#include "webkit/storage/webkit_storage_export.h"
namespace fileapi {
class FileSystemContext;
class FileSystemQuotaUtil;
class LocalFileStreamWriter;
class WEBKIT_STORAGE_EXPORT_PRIVATE SandboxFileStreamWriter
: public FileStreamWriter {
public:
SandboxFileStreamWriter(FileSystemContext* file_system_context,
const FileSystemURL& url,
int64 initial_offset,
const UpdateObserverList& observers);
virtual ~SandboxFileStreamWriter();
// FileStreamWriter overrides.
virtual int Write(net::IOBuffer* buf, int buf_len,
const net::CompletionCallback& callback) OVERRIDE;
virtual int Cancel(const net::CompletionCallback& callback) OVERRIDE;
virtual int Flush(const net::CompletionCallback& callback) OVERRIDE;
// Used only by tests.
void set_default_quota(int64 quota) {
default_quota_ = quota;
}
private:
// Performs quota calculation and calls local_file_writer_->Write().
int WriteInternal(net::IOBuffer* buf, int buf_len,
const net::CompletionCallback& callback);
// Callbacks that are chained for the first write. This eventually calls
// WriteInternal.
void DidGetFileInfo(const net::CompletionCallback& callback,
base::PlatformFileError file_error,
const base::PlatformFileInfo& file_info,
const base::FilePath& platform_path);
void DidGetUsageAndQuota(const net::CompletionCallback& callback,
quota::QuotaStatusCode status,
int64 usage, int64 quota);
void DidInitializeForWrite(net::IOBuffer* buf, int buf_len,
const net::CompletionCallback& callback,
int init_status);
void DidWrite(const net::CompletionCallback& callback, int write_response);
// Stops the in-flight operation, calls |cancel_callback_| and returns true
// if there's a pending cancel request.
bool CancelIfRequested();
scoped_refptr<FileSystemContext> file_system_context_;
FileSystemURL url_;
int64 initial_offset_;
scoped_ptr<LocalFileStreamWriter> local_file_writer_;
net::CompletionCallback cancel_callback_;
UpdateObserverList observers_;
base::FilePath file_path_;
int64 file_size_;
int64 total_bytes_written_;
int64 allowed_bytes_to_write_;
bool has_pending_operation_;
int64 default_quota_;
base::WeakPtrFactory<SandboxFileStreamWriter> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(SandboxFileStreamWriter);
};
} // namespace fileapi
#endif // WEBKIT_FILEAPI_SANDBOX_FILE_STREAM_WRITER_H_
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