Move files from //chrome/browser/sync to sync_driver component.

chrome/browser/sync/glue/model_association_manager.h

-// Copyright (c) 2012 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_GLUE_MODEL_ASSOCIATION_MANAGER_H__
-#define CHROME_BROWSER_SYNC_GLUE_MODEL_ASSOCIATION_MANAGER_H__
-
-#include <map>
-
-#include "base/memory/weak_ptr.h"
-#include "base/timer/timer.h"
-
-#include "components/sync_driver/data_type_manager.h"
-#include "sync/internal_api/public/data_type_association_stats.h"
-#include "sync/internal_api/public/util/weak_handle.h"
-
-// |ModelAssociationManager| does the heavy lifting for doing the actual model
-// association. It instructs DataTypeControllers to load models, start
-// associating and stopping. Since the operations are async it uses an
-// interface to inform DataTypeManager the results of the operations.
-// This class is owned by DataTypeManager.
-namespace browser_sync {
-
-class DataTypeController;
-
-// |ModelAssociationManager| association functions are async. The results of
-// those operations are passed back via this interface.
-class ModelAssociationResultProcessor {
- public:
-  virtual void OnSingleDataTypeAssociationDone(
-      syncer::ModelType type,
-      const syncer::DataTypeAssociationStats& association_stats) = 0;
-  virtual void OnModelAssociationDone(
-      const DataTypeManager::ConfigureResult& result) = 0;
-  virtual ~ModelAssociationResultProcessor() {}
-};
-
-// The class that is responsible for model association.
-class ModelAssociationManager {
- public:
-  ModelAssociationManager(const DataTypeController::TypeMap* controllers,
-                          ModelAssociationResultProcessor* processor);
-  virtual ~ModelAssociationManager();
-
-  // Initializes the state to do the model association in future. This
-  // should be called before communicating with sync server. A subsequent call
-  // of Initialize is only allowed if the ModelAssociationManager has invoked
-  // |OnModelAssociationDone| on the |ModelAssociationResultProcessor|. After
-  // this call, there should be several calls to StartAssociationAsync()
-  // to associate subset of |desired_types|.
-  void Initialize(syncer::ModelTypeSet desired_types);
-
-  // Can be called at any time. Synchronously stops all datatypes.
-  void Stop();
-
-  // Should only be called after Initialize to start the actual association.
-  // |types_to_associate| should be subset of |desired_types| in Initialize().
-  // When this is completed, |OnModelAssociationDone| will be invoked.
-  void StartAssociationAsync(const syncer::ModelTypeSet& types_to_associate);
-
-  // This is used for TESTING PURPOSE ONLY. The test case can inspect
-  // and modify the timer.
-  // TODO(sync) : This would go away if we made this class be able to do
-  // Dependency injection. crbug.com/129212.
-   base::OneShotTimer<ModelAssociationManager>* GetTimerForTesting();
-
- private:
-  enum State {
-    // This is the state after |Initialize| is called.
-    INITIALIZED_TO_CONFIGURE,
-    // Starting a new configuration.
-    CONFIGURING,
-    // No configuration is in progress.
-    IDLE
-  };
-
-  // Called at the end of association to reset state to prepare for next
-  // round of association.
-  void ResetForNextAssociation();
-
-  // Called by Initialize() to stop types that are not in |desired_types_|.
-  void StopDisabledTypes();
-
-  // Start loading non-running types that are in |desired_types_|.
-  void LoadEnabledTypes();
-
-  // Callback passed to each data type controller on starting association. This
-  // callback will be invoked when the model association is done.
-  void TypeStartCallback(syncer::ModelType type,
-                         base::TimeTicks type_start_time,
-                         DataTypeController::StartResult start_result,
-                         const syncer::SyncMergeResult& local_merge_result,
-                         const syncer::SyncMergeResult& syncer_merge_result);
-
-  // Callback that will be invoked when the models finish loading. This callback
-  // will be passed to |LoadModels| function.
-  void ModelLoadCallback(syncer::ModelType type, syncer::SyncError error);
-
-  // When a type fails to load or fails associating this method is invoked to
-  // do the book keeping and do the UMA reporting.
-  void AppendToFailedDatatypesAndLogError(const syncer::SyncError& error);
-
-  // Called when all requested types are associated or association times out.
-  // Notify |result_processor_| of configuration results.
-  void ModelAssociationDone();
-
-  State state_;
-
-  // Data types that are enabled.
-  syncer::ModelTypeSet desired_types_;
-
-  // Data types that are requested to associate.
-  syncer::ModelTypeSet requested_types_;
-
-  // Data types currently being associated, including types waiting for model
-  // load.
-  syncer::ModelTypeSet associating_types_;
-
-  // Data types that are loaded, i.e. ready to associate.
-  syncer::ModelTypeSet loaded_types_;
-
-  // Data types that are associated, i.e. no more action needed during
-  // reconfiguration if not disabled.
-  syncer::ModelTypeSet associated_types_;
-
-  // Data types that are still loading/associating when configuration times
-  // out.
-  syncer::ModelTypeSet slow_types_;
-
-  // Collects the list of errors resulting from failing to start a type. This
-  // would eventually be sent to the listeners after all the types have
-  // been given a chance to start.
-  std::map<syncer::ModelType, syncer::SyncError> failed_data_types_info_;
-
-  // The set of types that can't configure due to cryptographer errors.
-  syncer::ModelTypeSet needs_crypto_types_;
-
-  // Time when StartAssociationAsync() is called to associate for a set of data
-  // types.
-  base::TimeTicks association_start_time_;
-
-  // Set of all registered controllers.
-  const DataTypeController::TypeMap* controllers_;
-
-  // The processor in charge of handling model association results.
-  ModelAssociationResultProcessor* result_processor_;
-
-  // Timer to track and limit how long a datatype takes to model associate.
-  base::OneShotTimer<ModelAssociationManager> timer_;
-
-  base::WeakPtrFactory<ModelAssociationManager> weak_ptr_factory_;
-
-  DataTypeManager::ConfigureStatus configure_status_;
-
-  DISALLOW_COPY_AND_ASSIGN(ModelAssociationManager);
-};
-}  // namespace browser_sync
-#endif  // CHROME_BROWSER_SYNC_GLUE_MODEL_ASSOCIATION_MANAGER_H__