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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef CHROME_BROWSER_CHROMEOS_GDATA_FILE_WRITE_HELPER_H_ | 5 #ifndef CHROME_BROWSER_CHROMEOS_GDATA_FILE_WRITE_HELPER_H_ |
| 6 #define CHROME_BROWSER_CHROMEOS_GDATA_FILE_WRITE_HELPER_H_ | 6 #define CHROME_BROWSER_CHROMEOS_GDATA_FILE_WRITE_HELPER_H_ |
| 7 | 7 |
| 8 #include "base/bind.h" | 8 #include "base/bind.h" |
| 9 #include "base/file_path.h" | 9 #include "base/file_path.h" |
| 10 #include "base/memory/weak_ptr.h" | 10 #include "base/memory/weak_ptr.h" |
| 11 #include "chrome/browser/chromeos/gdata/gdata_errorcode.h" | 11 #include "chrome/browser/chromeos/gdata/drive_errorcode.h" |
| 12 #include "chrome/browser/chromeos/gdata/gdata_file_system_interface.h" | 12 #include "chrome/browser/chromeos/gdata/gdata_file_system_interface.h" |
| 13 | 13 |
| 14 namespace gdata { | 14 namespace gdata { |
| 15 | 15 |
| 16 // This class provides higher level operations for writing to GData files over | 16 // This class provides higher level operations for writing to GData files over |
| 17 // GDataFileSystemInterface. | 17 // GDataFileSystemInterface. |
| 18 class FileWriteHelper { | 18 class FileWriteHelper { |
| 19 public: | 19 public: |
| 20 explicit FileWriteHelper(GDataFileSystemInterface* file_system); | 20 explicit FileWriteHelper(GDataFileSystemInterface* file_system); |
| 21 ~FileWriteHelper(); | 21 ~FileWriteHelper(); |
| 22 | 22 |
| 23 // Prepares a local temporary file path and passes it to |callback| on the | 23 // Prepares a local temporary file path and passes it to |callback| on the |
| 24 // blocking thread pool that allows file operations. The modification to | 24 // blocking thread pool that allows file operations. The modification to |
| 25 // the file is reflected to GData |path|. If |path| does not exist, a new | 25 // the file is reflected to GData |path|. If |path| does not exist, a new |
| 26 // file is created. | 26 // file is created. |
| 27 // | 27 // |
| 28 // Must be called from UI thread. | 28 // Must be called from UI thread. |
| 29 void PrepareWritableFileAndRun(const FilePath& path, | 29 void PrepareWritableFileAndRun(const FilePath& path, |
| 30 const OpenFileCallback& callback); | 30 const OpenFileCallback& callback); |
| 31 | 31 |
| 32 private: | 32 private: |
| 33 // Part of PrepareWritableFilePathAndRun(). It tries CreateFile for the case | 33 // Part of PrepareWritableFilePathAndRun(). It tries CreateFile for the case |
| 34 // file does not exist yet, does OpenFile to download and mark the file as | 34 // file does not exist yet, does OpenFile to download and mark the file as |
| 35 // dirty, runs |callback|, and finally calls CloseFile. | 35 // dirty, runs |callback|, and finally calls CloseFile. |
| 36 void PrepareWritableFileAndRunAfterCreateFile( | 36 void PrepareWritableFileAndRunAfterCreateFile( |
| 37 const FilePath& file_path, | 37 const FilePath& file_path, |
| 38 const OpenFileCallback& callback, | 38 const OpenFileCallback& callback, |
| 39 GDataFileError result); | 39 DriveFileError result); |
| 40 void PrepareWritableFileAndRunAfterOpenFile( | 40 void PrepareWritableFileAndRunAfterOpenFile( |
| 41 const FilePath& file_path, | 41 const FilePath& file_path, |
| 42 const OpenFileCallback& callback, | 42 const OpenFileCallback& callback, |
| 43 GDataFileError result, | 43 DriveFileError result, |
| 44 const FilePath& local_cache_path); | 44 const FilePath& local_cache_path); |
| 45 void PrepareWritableFileAndRunAfterCallback(const FilePath& file_path); | 45 void PrepareWritableFileAndRunAfterCallback(const FilePath& file_path); |
| 46 | 46 |
| 47 // File system owned by GDataSystemService. | 47 // File system owned by GDataSystemService. |
| 48 GDataFileSystemInterface* file_system_; | 48 GDataFileSystemInterface* file_system_; |
| 49 | 49 |
| 50 // WeakPtrFactory bound to the UI thread. | 50 // WeakPtrFactory bound to the UI thread. |
| 51 // Note: This should remain the last member so it'll be destroyed and | 51 // Note: This should remain the last member so it'll be destroyed and |
| 52 // invalidate its weak pointers before any other members are destroyed. | 52 // invalidate its weak pointers before any other members are destroyed. |
| 53 base::WeakPtrFactory<FileWriteHelper> weak_ptr_factory_; | 53 base::WeakPtrFactory<FileWriteHelper> weak_ptr_factory_; |
| 54 | 54 |
| 55 DISALLOW_COPY_AND_ASSIGN(FileWriteHelper); | 55 DISALLOW_COPY_AND_ASSIGN(FileWriteHelper); |
| 56 }; | 56 }; |
| 57 | 57 |
| 58 } // namespace gdata | 58 } // namespace gdata |
| 59 | 59 |
| 60 #endif // CHROME_BROWSER_CHROMEOS_GDATA_FILE_WRITE_HELPER_H_ | 60 #endif // CHROME_BROWSER_CHROMEOS_GDATA_FILE_WRITE_HELPER_H_ |
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