Send OnModifyFile Notification when File Write Finishes

webkit/fileapi/file_writer_delegate.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_FILE_WRITER_DELEGATE_H_
 #define WEBKIT_FILEAPI_FILE_WRITER_DELEGATE_H_
 
 #include "base/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/platform_file.h"
 #include "base/time.h"
 #include "net/base/file_stream.h"
 #include "net/base/io_buffer.h"
 #include "net/url_request/url_request.h"
 #include "webkit/fileapi/fileapi_export.h"
 #include "webkit/fileapi/file_system_operation.h"
 
 namespace fileapi {
 
 class FileStreamWriter;
 class FileSystemOperationContext;
 class FileSystemQuotaUtil;
 
 class FILEAPI_EXPORT_PRIVATE FileWriterDelegate
     : public net::URLRequest::Delegate {
  public:
+  enum WriteProgressStatus {
+    SUCCESS_IO_PENDING,
+    SUCCESS_COMPLETED,
+    ERROR_WRITE_STARTED,
+    ERROR_WRITE_NOT_STARTED,
+  };
+
+  typedef base::Callback<void(
+      base::PlatformFileError result,
+      int64 bytes,
+      WriteProgressStatus write_status)> DelegateWriteCallback;
+
   FileWriterDelegate(
-      const FileSystemOperation::WriteCallback& write_callback,
+      const DelegateWriteCallback& write_callback,
       scoped_ptr<FileStreamWriter> file_writer);
   virtual ~FileWriterDelegate();
 
   void Start(scoped_ptr<net::URLRequest> request);
 
   // Cancels the current write operation.  Returns true if it is ok to
   // delete this instance immediately.  Otherwise this will call
   // |write_operation|->DidWrite() with complete=true to let the operation
   // perform the final cleanup.
   bool Cancel();
@@ skipping 20 matching lines @@
       const base::PlatformFileInfo& file_info);
   void Read();
   void OnDataReceived(int bytes_read);
   void Write();
   void OnDataWritten(int write_response);
   void OnError(base::PlatformFileError error);
   void OnProgress(int bytes_read, bool done);
   void OnWriteCancelled(int status);
 
   FileSystemQuotaUtil* quota_util() const;
+  WriteProgressStatus GetCompletionStatusOnError() const;
 
-  FileSystemOperation::WriteCallback write_callback_;
+  DelegateWriteCallback write_callback_;
   scoped_ptr<FileStreamWriter> file_stream_writer_;
   base::Time last_progress_event_time_;
+  bool writing_started_;
   int bytes_written_backlog_;
   int bytes_written_;
   int bytes_read_;
   scoped_refptr<net::IOBufferWithSize> io_buffer_;
   scoped_refptr<net::DrainableIOBuffer> cursor_;
   scoped_ptr<net::URLRequest> request_;
   base::WeakPtrFactory<FileWriterDelegate> weak_factory_;
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_FILEAPI_FILE_WRITER_DELEGATE_H_