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      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
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_CHANGE_PROCESSOR_H_
      6 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_CHANGE_PROCESSOR_H_
      7 
      8 #include "base/callback_forward.h"
      9 #include "chrome/browser/sync_file_system/sync_callbacks.h"
     10 
     11 namespace fileapi {
     12 class FileSystemURL;
     13 }
     14 
     15 namespace sync_file_system {
     16 
     17 class FileChange;
     18 
     19 // Represents an interface to process one local change and applies
     20 // it to the remote server.
     21 // This interface is to be implemented/backed by RemoteSyncFileService.
     22 class LocalChangeProcessor {
     23  public:
     24   LocalChangeProcessor() {}
     25   virtual ~LocalChangeProcessor() {}
     26 
     27   // This is called to apply the local |change|. If the change type is
     28   // ADD_OR_UPDATE for a file, |local_file_path| points to a local file
     29   // path that contains the latest file image whose file metadata is
     30   // |local_file_metadata|.
     31   // When SYNC_STATUS_HAS_CONFLICT is returned the implementation should
     32   // notify the backing RemoteFileSyncService of the existence of conflict
     33   // (as the remote service is supposed to maintain a list of conflict files).
     34   virtual void ApplyLocalChange(
     35       const FileChange& change,
     36       const base::FilePath& local_file_path,
     37       const SyncFileMetadata& local_file_metadata,
     38       const fileapi::FileSystemURL& url,
     39       const SyncStatusCallback& callback) = 0;
     40 
     41  private:
     42   DISALLOW_COPY_AND_ASSIGN(LocalChangeProcessor);
     43 };
     44 
     45 }  // namespace sync_file_system
     46 
     47 #endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_CHANGE_PROCESSOR_H_
     48