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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 EXTENSIONS_BROWSER_VALUE_STORE_VALUE_STORE_FACTORY_H_
#define EXTENSIONS_BROWSER_VALUE_STORE_VALUE_STORE_FACTORY_H_
#include <set>
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "extensions/browser/api/storage/settings_namespace.h"
#include "extensions/common/extension.h"
class ValueStore;
namespace extensions {
// Create new value stores for rules, state, or settings. For settings will
// also create stores for the specified namespace and model type.
//
// Note: This factory creates the lower level stores that directly read/write to
// disk. Sync/Managed stores are created directly, but delegate their
// calls to a |ValueStore| created by this interface.
class ValueStoreFactory : public base::RefCountedThreadSafe<ValueStoreFactory> {
public:
enum class ModelType { APP, EXTENSION };
// Create a |ValueStore| to contain rules data.
virtual scoped_ptr<ValueStore> CreateRulesStore() = 0;
// Create a |ValueStore| to contain state data.
virtual scoped_ptr<ValueStore> CreateStateStore() = 0;
// Create a |ValueStore| to contain settings data for a specific extension
// namespace and model type.
virtual scoped_ptr<ValueStore> CreateSettingsStore(
settings_namespace::Namespace settings_namespace,
ModelType model_type,
const ExtensionId& extension_id) = 0;
// Delete all settings for specified given extension in the specified
// namespace/model_type.
virtual void DeleteSettings(settings_namespace::Namespace settings_namespace,
ModelType model_type,
const ExtensionId& extension_id) = 0;
// Are there any settings stored in the specified namespace/model_type for
// the given extension?
virtual bool HasSettings(settings_namespace::Namespace settings_namespace,
ModelType model_type,
const ExtensionId& extension_id) = 0;
// Return all extension ID's with settings stored in the given
// namespace/model_type.
virtual std::set<ExtensionId> GetKnownExtensionIDs(
settings_namespace::Namespace settings_namespace,
ModelType model_type) const = 0;
protected:
friend class base::RefCountedThreadSafe<ValueStoreFactory>;
virtual ~ValueStoreFactory() {}
};
} // namespace extensions
#endif // EXTENSIONS_BROWSER_VALUE_STORE_VALUE_STORE_FACTORY_H_
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