chrome/browser/sync_file_system/local/root_delete_helper.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_SYNC_FILE_SYSTEM_LOCAL_ROOT_DELETE_HELPER_H_
   6 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_ROOT_DELETE_HELPER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/callback.h"
  10 #include "base/files/file.h"
  11 #include "base/memory/ref_counted.h"
  12 #include "base/memory/weak_ptr.h"
  13 #include "storage/browser/fileapi/file_system_url.h"
  14
  15 class GURL;
  16
  17 namespace storage {
  18 class FileSystemContext;
  19 }
  20
  21 namespace sync_file_system {
  22
  23 class LocalFileSyncStatus;
  24
  25 // A helper class to delete the root directory of a given Sync FileSystem.
  26 // This could happen when AppRoot (or SyncRoot) is deleted by remote operation,
  27 // and we want to delete all local files + all pending local changes in this
  28 // case.
  29 //
  30 // Expected to be called on and will callback on IO thread.
  31 class RootDeleteHelper {
  32  public:
  33   typedef base::Callback<void(base::File::Error)> FileStatusCallback;
  34
  35   RootDeleteHelper(storage::FileSystemContext* file_system_context,
  36                    LocalFileSyncStatus* sync_status,
  37                    const storage::FileSystemURL& url,
  38                    const FileStatusCallback& callback);
  39   ~RootDeleteHelper();
  40
  41   void Run();
  42
  43  private:
  44   void DidDeleteFileSystem(base::File::Error error);
  45   void DidResetFileChangeTracker();
  46   void DidOpenFileSystem(const GURL& root,
  47                          const std::string& name,
  48                          base::File::Error error);
  49
  50   scoped_refptr<storage::FileSystemContext> file_system_context_;
  51   const storage::FileSystemURL url_;
  52   FileStatusCallback callback_;
  53
  54   // Not owned; owner of this instance owns it.
  55   LocalFileSyncStatus* sync_status_;
  56
  57   base::WeakPtrFactory<RootDeleteHelper> weak_factory_;
  58
  59   DISALLOW_COPY_AND_ASSIGN(RootDeleteHelper);
  60 };
  61
  62 }  // namespace sync_file_system
  63
  64 #endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_ROOT_DELETE_HELPER_H_