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// Copyright 2016 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_READING_LIST_IOS_READING_LIST_MODEL_STORAGE_H_
#define COMPONENTS_READING_LIST_IOS_READING_LIST_MODEL_STORAGE_H_
#include <vector>
#include "base/macros.h"
#include "components/reading_list/ios/reading_list_entry.h"
#include "components/sync/base/model_type.h"
#include "components/sync/model/model_type_sync_bridge.h"
class ReadingListModel;
class ReadingListStoreDelegate;
namespace syncer {
class ModelTypeSyncBridge;
}
// Interface for a persistence layer for reading list.
// All interface methods have to be called on main thread.
class ReadingListModelStorage : public syncer::ModelTypeSyncBridge {
public:
class ScopedBatchUpdate;
ReadingListModelStorage(
const ChangeProcessorFactory& change_processor_factory,
syncer::ModelType type);
~ReadingListModelStorage() override;
// Sets the model the Storage is backing.
// This will trigger store initalization and load persistent entries.
virtual void SetReadingListModel(ReadingListModel* model,
ReadingListStoreDelegate* delegate) = 0;
// Starts a transaction. All Save/Remove entry will be delayed until the
// transaction is commited.
// Multiple transaction can be started at the same time. Commit will happen
// when the last transaction is commited.
// Returns a scoped batch update object that should be retained while the
// batch update is performed. Deallocating this object will inform model that
// the batch update has completed.
virtual std::unique_ptr<ScopedBatchUpdate> EnsureBatchCreated() = 0;
// Saves or updates an entry. If the entry is not yet in the database, it is
// created.
virtual void SaveEntry(const ReadingListEntry& entry) = 0;
// Removed an entry from the storage.
virtual void RemoveEntry(const ReadingListEntry& entry) = 0;
class ScopedBatchUpdate {
public:
ScopedBatchUpdate() {}
virtual ~ScopedBatchUpdate() {}
private:
DISALLOW_COPY_AND_ASSIGN(ScopedBatchUpdate);
};
private:
DISALLOW_COPY_AND_ASSIGN(ReadingListModelStorage);
};
#endif // COMPONENTS_READING_LIST_IOS_READING_LIST_MODEL_STORAGE_H_
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