| // Copyright (c) 2011 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_WEBFILEWRITER_BASE_H_ |
| #define WEBKIT_FILEAPI_WEBFILEWRITER_BASE_H_ |
| |
| #include "base/platform_file.h" |
| #include "googleurl/src/gurl.h" |
| #include "third_party/WebKit/Source/WebKit/chromium/public/WebFileWriter.h" |
| |
| namespace WebKit { |
| class WebFileWriterClient; |
| class WebString; |
| class WebURL; |
| } |
| |
| namespace fileapi { |
| |
| class WebFileWriterBase : public WebKit::WebFileWriter { |
| public: |
| WebFileWriterBase( |
| const GURL& path, WebKit::WebFileWriterClient* client); |
| virtual ~WebFileWriterBase(); |
| |
| // WebFileWriter implementation |
| virtual void truncate(long long length); |
| virtual void write(long long position, const WebKit::WebURL& blobURL); |
| virtual void cancel(); |
| |
| protected: |
| // Derived classes must provide these methods to asynchronously perform |
| // the requested operation, and they must call the appropiate DidSomething |
| // method upon completion and as progress is made in the Write case. |
| virtual void DoTruncate(const GURL& path, int64 offset) = 0; |
| virtual void DoWrite(const GURL& path, const GURL& blob_url, |
| int64 offset) = 0; |
| virtual void DoCancel() = 0; |
| |
| void DidSucceed(); |
| void DidFail(base::PlatformFileError error_code); |
| void DidWrite(int64 bytes, bool complete); |
| |
| private: |
| enum OperationType { |
| kOperationNone, |
| kOperationWrite, |
| kOperationTruncate |
| }; |
| |
| enum CancelState { |
| kCancelNotInProgress, |
| kCancelSent, |
| kCancelReceivedWriteResponse, |
| }; |
| |
| void FinishCancel(); |
| |
| GURL path_; |
| WebKit::WebFileWriterClient* client_; |
| OperationType operation_; |
| CancelState cancel_state_; |
| }; |
| |
| } // namespace fileapi |
| |
| #endif // WEBKIT_FILEAPI_WEBFILEWRITER_BASE_H_ |