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// Copyright 2014 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 COMPONENTS_SYNC_DRIVER_NON_BLOCKING_DATA_TYPE_MANAGER_H_
#define COMPONENTS_SYNC_DRIVER_NON_BLOCKING_DATA_TYPE_MANAGER_H_
#include "base/containers/scoped_ptr_map.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "sync/internal_api/public/base/model_type.h"
namespace base {
class SequencedTaskRunner;
} // namespace base
namespace syncer_v2 {
class ModelTypeSyncProxyImpl;
class SyncContextProxy;
} // namespace syncer_v2
namespace sync_driver {
class NonBlockingDataTypeController;
// Manages a set of NonBlockingDataTypeControllers.
//
// Each NonBlockingDataTypeController instance handles the logic around
// enabling and disabling sync for a particular non-blocking type. This class
// manages all the controllers.
class NonBlockingDataTypeManager {
public:
NonBlockingDataTypeManager();
~NonBlockingDataTypeManager();
// Declares |type| as a non-blocking type. Should be done early
// on during sync initialization.
//
// The |preferred| flag indicates whether or not this type should be synced.
void RegisterType(syncer::ModelType type, bool preferred);
// Connects the ModelTypeSyncProxyImpl and associated model type
// thread to its NonBlockingDataTypeController on the UI thread.
void InitializeType(
syncer::ModelType type,
const scoped_refptr<base::SequencedTaskRunner>& task_runner,
const base::WeakPtr<syncer_v2::ModelTypeSyncProxyImpl>& type_sync_proxy);
// Connects the sync backend, as represented by a SyncContextProxy, to the
// NonBlockingDataTypeController on the UI thread.
void ConnectSyncBackend(scoped_ptr<syncer_v2::SyncContextProxy> proxy);
// Disconnects the sync backend from the UI thread. Should be called
// early on during shutdown, but the whole procedure is asynchronous so
// there's not much downside to calling it later.
void DisconnectSyncBackend();
// Updates the set of types the user wants to have synced.
void SetPreferredTypes(syncer::ModelTypeSet types);
// Returns the list of all known non-blocking sync types that registered with
// RegisterType.
syncer::ModelTypeSet GetRegisteredTypes() const;
private:
typedef base::ScopedPtrMap<syncer::ModelType,
scoped_ptr<NonBlockingDataTypeController>>
NonBlockingDataTypeControllerMap;
// List of data type controllers for non-blocking types.
NonBlockingDataTypeControllerMap non_blocking_data_type_controllers_;
};
} // namespace sync_driver
#endif // COMPONENTS_SYNC_DRIVER_NON_BLOCKING_DATA_TYPE_MANAGER_H_
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