chrome/browser/chromeos/drive/write_on_cache_file.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_CHROMEOS_DRIVE_WRITE_ON_CACHE_FILE_H_
   6 #define CHROME_BROWSER_CHROMEOS_DRIVE_WRITE_ON_CACHE_FILE_H_
   7
   8 #include "base/callback_forward.h"
   9 #include "components/drive/file_errors.h"
  10
  11 namespace base {
  12 class FilePath;
  13 }
  14
  15 namespace drive {
  16
  17 class FileSystemInterface;
  18
  19 // Callback type for WriteOnCacheFile.
  20 typedef base::Callback<void (FileError, const base::FilePath& path)>
  21     WriteOnCacheFileCallback;
  22
  23 // Creates (if needed) a file at |path|, brings it to the local cache,
  24 // and invokes |callback| on blocking thread pool with the cache file path.
  25 // The |callback| can write to the file at the path by normal local file I/O
  26 // operations. After it returns, the written content is synced to the server.
  27 //
  28 // If non-empty |mime_type| is set and the file is created by this function
  29 // call, the mime type for the entry is set to |mime_type|. Otherwise the type
  30 // is automatically determined from |path|.
  31 //
  32 // Must be called from UI thread.
  33 void WriteOnCacheFile(FileSystemInterface* file_system,
  34                       const base::FilePath& path,
  35                       const std::string& mime_type,
  36                       const WriteOnCacheFileCallback& callback);
  37
  38 // Does the same thing as WriteOnCacheFile() and runs |reply| on the UI thread
  39 // after the completion.
  40 void WriteOnCacheFileAndReply(FileSystemInterface* file_system,
  41                               const base::FilePath& path,
  42                               const std::string& mime_type,
  43                               const WriteOnCacheFileCallback& callback,
  44                               const FileOperationCallback& reply);
  45
  46 }  // namespace drive
  47
  48 #endif  // CHROME_BROWSER_CHROMEOS_DRIVE_WRITE_ON_CACHE_FILE_H_