[SyncFS] Add MetadataDatabase::UpdateTracker

chrome/browser/sync_file_system/drive_backend/metadata_database.h

 // Copyright 2013 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 CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_METADATA_DATABASE_H_
 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_METADATA_DATABASE_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 173 matching lines @@
 
   // Updates database by |changes|.
   // Marks each tracker for modified file as dirty and adds new trackers if
   // needed.
   void UpdateByChangeList(ScopedVector<google_apis::ChangeResource> changes,
                           const SyncStatusCallback& callback);
 
   // Adds |child_file_ids| to |folder_id| as its children.
   // This method affects the active tracker only.
   // If the tracker has no further change to sync, unmarks its dirty flag.
-  void PopulateFolder(const std::string& folder_id,
-                      const FileIDList& child_file_ids,
-                      const SyncStatusCallback& callback);
+  void PopulateFolderByChildList(const std::string& folder_id,
+                                 const FileIDList& child_file_ids,
+                                 const SyncStatusCallback& callback);
+
+  // Updates |synced_details| of the tracker with |updated_details|.
+  void UpdateTracker(int64 tracker_id,
+                     const FileDetails& updated_details,
+                     const SyncStatusCallback& callback);
 
  private:
   struct DirtyTrackerComparator {
     bool operator()(const FileTracker* left,
                     const FileTracker* right) const;
   };
 
   typedef std::set<FileTracker*, DirtyTrackerComparator> DirtyTrackers;
 
   friend class MetadataDatabaseTest;
@@ skipping 19 matching lines @@
   void MakeAppRootEnabled(int64 tracker_id, leveldb::WriteBatch* batch);
 
   void UnregisterTrackerAsAppRoot(const std::string& app_id,
                                   leveldb::WriteBatch* batch);
   void RemoveAllDescendantTrackers(int64 root_tracker_id,
                                    leveldb::WriteBatch* batch);
 
   void CreateTrackerForParentAndFileID(const FileTracker& parent_tracker,
                                        const std::string& file_id,
                                        leveldb::WriteBatch* batch);
+
+  void RemoveTracker(int64 tracker_id, leveldb::WriteBatch* batch);
   void RemoveTrackerIgnoringSiblings(int64 tracker_id,
                                      leveldb::WriteBatch* batch);
+  void RemoveTrackerInternal(int64 tracker_id,
+                             leveldb::WriteBatch* batch,
+                             bool ignoring_siblings);
   void MaybeAddTrackersForNewFile(const FileMetadata& file,
                                   leveldb::WriteBatch* batch);
 
   void MarkTrackerSetDirty(TrackerSet* trackers,
                            leveldb::WriteBatch* batch);
   void MarkTrackersDirtyByFileID(const std::string& file_id,
                                  leveldb::WriteBatch* batch);
   void MarkTrackersDirtyByPath(int64 parent_tracker_id,
                                const std::string& title,
                                leveldb::WriteBatch* batch);
 
   void EraseTrackerFromFileIDIndex(FileTracker* tracker,
                                    leveldb::WriteBatch* batch);
   void EraseTrackerFromPathIndex(FileTracker* tracker);
   void EraseFileFromDatabase(const std::string& file_id,
                              leveldb::WriteBatch* batch);
 
   int64 GetNextTrackerID(leveldb::WriteBatch* batch);
 
   void RecursiveMarkTrackerAsDirty(int64 root_tracker_id,
                                    leveldb::WriteBatch* batch);
+  bool CanActivateTracker(const FileTracker& tracker);
   bool ShouldKeepDirty(const FileTracker& tracker) const;
 
+  bool HasDisabledAppRoot(const FileTracker& tracker) const;
+  bool HasActiveTrackerForFileID(const std::string& file_id) const;
+  bool HasActiveTrackerForPath(int64 parent_tracker,
+                               const std::string& title) const;
+
+  void UpdateTrackerTitle(FileTracker* tracker,
+                          const std::string& new_title,
+                          leveldb::WriteBatch* batch);
+
   void WriteToDatabase(scoped_ptr<leveldb::WriteBatch> batch,
                        const SyncStatusCallback& callback);
 
   scoped_refptr<base::SequencedTaskRunner> task_runner_;
   scoped_ptr<leveldb::DB> db_;
 
   scoped_ptr<ServiceMetadata> service_metadata_;
 
   FileByID file_by_id_;  // Owned.
   TrackerByID tracker_by_id_;  // Owned.
@@ skipping 21 matching lines @@
 
   base::WeakPtrFactory<MetadataDatabase> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MetadataDatabase);
 };
 
 }  // namespace drive_backend
 }  // namespace sync_file_system
 
 #endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_METADATA_DATABASE_H_