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// Copyright 2014 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_FILEAPI_UPLOAD_FILE_SYSTEM_FILE_ELEMENT_READER_H_
#define CONTENT_BROWSER_FILEAPI_UPLOAD_FILE_SYSTEM_FILE_ELEMENT_READER_H_
#include "base/memory/weak_ptr.h"
#include "base/time/time.h"
#include "content/common/content_export.h"
#include "net/base/upload_element_reader.h"
#include "url/gurl.h"
namespace storage {
class FileStreamReader;
}
namespace storage {
class FileSystemContext;
}
namespace content {
// An UploadElementReader implementation for filesystem file.
class CONTENT_EXPORT UploadFileSystemFileElementReader :
NON_EXPORTED_BASE(public net::UploadElementReader) {
public:
UploadFileSystemFileElementReader(
storage::FileSystemContext* file_system_context,
const GURL& url,
uint64 range_offset,
uint64 range_length,
const base::Time& expected_modification_time);
~UploadFileSystemFileElementReader() override;
// UploadElementReader overrides:
int Init(const net::CompletionCallback& callback) override;
uint64 GetContentLength() const override;
uint64 BytesRemaining() const override;
int Read(net::IOBuffer* buf,
int buf_length,
const net::CompletionCallback& callback) override;
private:
void OnGetLength(const net::CompletionCallback& callback, int64 result);
void OnRead(const net::CompletionCallback& callback, int result);
scoped_refptr<storage::FileSystemContext> file_system_context_;
const GURL url_;
const uint64 range_offset_;
const uint64 range_length_;
const base::Time expected_modification_time_;
scoped_ptr<storage::FileStreamReader> stream_reader_;
uint64 stream_length_;
uint64 position_;
base::WeakPtrFactory<UploadFileSystemFileElementReader> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(UploadFileSystemFileElementReader);
};
} // namespace content
#endif // CONTENT_BROWSER_FILEAPI_UPLOAD_FILE_SYSTEM_FILE_ELEMENT_READER_H_
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