Split FileAPI code for common|common_child|renderer

webkit/fileapi/webfilewriter_base.h

-// 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_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"
-#include "webkit/storage/webkit_storage_export.h"
-
-namespace WebKit {
-class WebFileWriterClient;
-class WebURL;
-}
-
-namespace fileapi {
-
-class WEBKIT_STORAGE_EXPORT WebFileWriterBase
-    : public NON_EXPORTED_BASE(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:
-  // This calls DidSucceed() or DidFail() based on the value of |error_code|.
-  void DidFinish(base::PlatformFileError error_code);
-
-  void DidWrite(int64 bytes, bool complete);
-  void DidSucceed();
-  void DidFail(base::PlatformFileError error_code);
-
-  // 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;
-
- 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_