| // Copyright (c) 2013 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_BROWSER_FILEAPI_UPLOAD_FILE_SYSTEM_FILE_ELEMENT_READER_H_ |
| #define WEBKIT_BROWSER_FILEAPI_UPLOAD_FILE_SYSTEM_FILE_ELEMENT_READER_H_ |
| |
| #include "base/memory/weak_ptr.h" |
| #include "base/time/time.h" |
| #include "net/base/upload_element_reader.h" |
| #include "url/gurl.h" |
| #include "webkit/browser/webkit_storage_browser_export.h" |
| |
| namespace webkit_blob { |
| class FileStreamReader; |
| } |
| |
| namespace fileapi { |
| |
| class FileSystemContext; |
| |
| // An UploadElementReader implementation for filesystem file. |
| class WEBKIT_STORAGE_BROWSER_EXPORT UploadFileSystemFileElementReader |
| : public net::UploadElementReader { |
| public: |
| UploadFileSystemFileElementReader( |
| FileSystemContext* file_system_context, |
| const GURL& url, |
| uint64 range_offset, |
| uint64 range_length, |
| const base::Time& expected_modification_time); |
| virtual ~UploadFileSystemFileElementReader(); |
| |
| // UploadElementReader overrides: |
| virtual int Init(const net::CompletionCallback& callback) OVERRIDE; |
| virtual uint64 GetContentLength() const OVERRIDE; |
| virtual uint64 BytesRemaining() const OVERRIDE; |
| virtual 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<FileSystemContext> file_system_context_; |
| const GURL url_; |
| const uint64 range_offset_; |
| const uint64 range_length_; |
| const base::Time expected_modification_time_; |
| |
| scoped_ptr<webkit_blob::FileStreamReader> stream_reader_; |
| |
| uint64 stream_length_; |
| uint64 position_; |
| |
| base::WeakPtrFactory<UploadFileSystemFileElementReader> weak_ptr_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(UploadFileSystemFileElementReader); |
| }; |
| |
| } // namespace fileapi |
| |
| #endif // WEBKIT_BROWSER_FILEAPI_UPLOAD_FILE_SYSTEM_FILE_ELEMENT_READER_H_ |